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Scanned from the collections of
The Library of Congress

AUDIO-VISUAL CONSERVATION
at The LIBRARY of CONGRESS

Packard Campus

for Audio Visual Conservation

www.loc.gov/avconservation

Motion Picture and Television Reading Room
www.loc.gov/rr/mopic

Recorded Sound Reference Center
www.loc.gov/rr/record

▲

675 millions of such dollars were
earned and paid out by radio in 1938

Statistics of Radio - in this issue
SELLING STRATEGY FOR 1939

ANUAR

^2*

RADIO TODAY, January, 1939, Vol. V, No. 1, published monthly by Caldwell-Clements, Inc., 480 Lexington Ave., New York, N. Y. Subscription
price U. S. and Latin American countries; $1.00 for 2 years, Canada: $1.25 for 2 years. All other countries $2.00 for 2 years; single copy, 15c. Entered
as second-class matter July 24, 1936, at the post office at New York, N. Y., under the Act of March 3, 1879. Printed in U.S.A. Member of A. B. C.
Copyright 1939 by Caldwell-Clements, Inc.

"THESE THREE THINGS
YOU MUST REMEMBER"

An important message to radio tube retailers
from Mr. Paul S. Ellison, Renewal Tube Sales
Manager, Hygrade Sylvania Corporation

To my mind there is no sleight-of-hand, no mystery or
black magic concerned with building a successful radio
retail sales or service business. Granted that the owner is
honest, industrious, and reasonably well-trained in the
fundamentals of his business, he should succeed. There
are, however, three simple considerations which cannot be
ignored in the selection of the merchandise to be sold :

A. COMPANY DEPENDABILITY. Buy only from compa-
nies whose reputation and general standards indicate suc-
cessful and aggressive management.

B. PRODUCT DEPENDABILITY. Original research, scien-
tific developments, and quality control in production, as
well as performance in the field are absolutely essential.
There are no substitutes.

C. PROFIT DEPENDABILITY. Policies over a period of
years tending to establish a freedom from price cutting.
Promotional and display helps that sell. A product that
stays sold. All of these factors you must obtain, if profits
are to be insured.

Test your merchandise by these three important standards
and your business will succeed.

Renewal Tube Sales Manager

HYGRADE SYLVANIA CORPORATION

Radio Today

ALL RETAIL STROMBERG CARLSON
UNIT SALES UNIT SALES

RADIO
SET

uMLCD

IN
NOVEMBER

NEW STRDMBERG-CARLSONS
THAT WILL LEAD THE TREND

Radios that "clicked" was the reason Stromberg-Carlson
sales jumped ahead with a gain of 250% in November
while the Radio Industry as a whole was staging its slow
come-back. And just see what you have to sell to start the
New Year: New Authentic Corner Cabinets — one in
mahogany, one in walnut — a Table Model alluring in its
Authentic Chippendale motif; a new streamlined High
Fidelity Console with ultra modern touch; two Slanting
Panel Console Grands that open up a brand new market.
The famous Labyrinth, biggest sales feature in radio.

These additions, to the line that "clicked" will carry the
trend more strongly to Stromberg-Carlson — and to profits.

Stromberg-Carlson Telephone Mfg. Co., Rochester, N. Y.

taomberif-CiuisoiiL

January, 1939

WINTER MONEY-MAKING PACKAGE

We offer
to the pub-
lic the first
radio to
work on the

110-volt AC or DC light-
ing circuit which at the
same time requires no
batteries, no antenna in-
stallation, no ground con-
nections and no outside
wired connections other
than the power cord.

NO ANTENNA • NO GROUND
NO NOISE • NO INSTALLATION
NO BATTERIES • JUST PLUG IN
AND PLAY ANYWHERE

AND 7WF NEW

BIG 8

CONSOLE

O RADIORGAN TONE COLOR RECEPTION

0 12-INCH FULL TONE ELECTRO DYNAMIC SPEAKER

O « POWERFUL METAGLASS TUBES

O LARGE BEAUTIFULLY FIGURED CHOICE WALNUT FINISH CABINET

O OVERSIZE RUBBER FLOATED CHASSIS

Phxnte. if cart. $etuth^Ulxibuto\
IftA 'Detail* a*ul Climb ttboasut!

Radio Today

BLOCKAD* THE WEST ROAD/
""" tV^O MEN AND A WOMAN!
^ BE CAREFUL.' THE/'RE KlLLERs,

AIV Of

Illinois Police Radio Blockade
Cuts Crime Careers Short!

The "radio blockades" of the Illinois State Police and police of many
other states have become famous throughout the country. In Cook County,
Illinois, the blockade begins in the well-equipped police station WQPC pictured
below. Once the alarm is sounded, every road is blockaded immediately — cutting
off all escape channels for fugitives.

Fighting crime is no game for "panty-waists." Police must be tough and
efficient. Squad cars must be swift and sturdy. And radio tubes must be de-
pendable— and ready for emergency flashes.

That's why RAYTHEONS are used by so many State Police organiza-
tions. Why RAYTHEONS are used, too, in millions of homes, in leading auto set
radios, by leading Commercial Airlines, the U. S. Forestry Service, Coast Guard,
Weather Bureau, etc.

Anywhere sturdiness and long life under adverse conditions are required
— you will find RAYTHEONS. Yet they cost no more than the second-best tube.

RAYTHEON is your guarantee. of the best turnover of any tube invest-

ment!

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RAYTHEON

NEWTON, MASS. • NEW YORK • CHICAGO • SAN FRANCISCO • ATLANTA

"WORLD'S LARGEST EXCLUSIVE RADIO TUBE MANUFACTURERS"

January, 1939 5

RCA . . . the name symbolizing creation,
progress, achievement in radio ! RCA . . .
Radio Corporation of America ... a family of
doers writing history with sound in the sky!

Makers of instruments for radio transmis-
sion and reception of sound, code messages
and facsimile reproduction. Makers of instru-
ments for the recording of sound on records
andon motion picture film. Creators of count-
less radio devices vital to science, industry,
medicine, telephony, and public safety.

RCA. . . creator of a nation-wide broadcast-
ing service, The National Broadcasting Co.

RCA . . . creator of a world-wide radio com-
munications system with direct circuits
between the United States and 43 foreign
countries, and with ships at sea ... a mes-
sage service with the speed of lightning.

RCA. . . pioneer in research in radio, sound
and television.

RCA . . . truly American, owned by a
quarter of a million stockholders in 48 states.

RCA ... 19 years a name across the sky
... 19 years of service to all the world.

Listen to the "MAGIC KEY" every Sunday, 2 to 3 P. M.,
E. S. T., on the NBC Blue Network.

Radio Corporation of America

RADIO CITY, N. Y.
RCA Manufacturing Co., Inc. Radiomarine Corporation of America

RCA Institutes, Inc. National Broadcasting Company R.C.A. Communications, Inc.

Radio Today

Dealers Will Profit Again in 1939

With the SPARTON ECON-0-MISER

Because it assures food savings and promotes maximum operating economy. . . .
This uncanny device that shuts the current off completely for two hours and turns the
current on again, automatically, before the cabinet has risen above a safe food preser-
vation point, is furnished with a smart clock face which gives accurate electric time for the
kitchen and has a second hand for recipe timing. . . . Sparton's gleaming, white, DeJux
finish refrigerators are available now in seven beautiful models. . . . Write for complete
information and literature.

Ready Now Jor Immediate Delivery
THE SPARKS -WITHINGTON COMPANY, JACKSON, MICHIGAN

January, 1939

yu4tOut/7HeyeaM tffl^XweffiatcfMpA /we/

THE SENSATIONAL NEW "100 SERIES

•/#

PH0HB6RAPH

Three New Models with
Greater Value— Lower Prices!

Here are the three models that will bring
you- radio-phonograph sales this spring!
Sensational value ! Exquisite cabinets
Exclusive selling features! And perform-
ance on both radio and phonograph you
never dreamed possible except at many
dollars more !

Automatic Record Changer Model

A BIG instrument . . . with auto-
mafic record changer and PHILCO
Instant Electric Push-Button Tuning
radio! Priced so that you can sell
it under $100!* Both radio and phono-
graph controls are concealed un-
der top lid.

PHONOGRAPH w/m PHILCO
Console Model 105

A full-sized console
model radio-phonograph
combination for less than
your customers expect to
pay for a radio alone ! Ex-
clusive PHONOGRAPH
WITH PHILCO Semi-
Automatic Reproducer —
close the lid and the
record starts or repeats
automatically ! PHILCO
Instant Electric Push-
Button Tuning radio.

*Prieei slightly
higher in the West

SEE YOUR PHILCO DISTRIBUTOR

Table Model 101 • 5 Tubes!
$29'5

Five-tube superheterodyne circuit
... all five tubes work! Under-
writer's Laboratory approval!
Crystal Pick-Up . . . self-starting
electric motor.

Radio Today

JAN 21 1939

©C1B 403197

Vinton K. Ulrich

Managing Editor

Darrell Bartee
George R. Brown
G. H. Mayorga
N. McAllister
M. H. Newton
R. Neubauer
B. V. Spinetta

M. E. Herring

Sales Manager

R. Y. FlTZPATRICK

201 N. Wells, Chicago, 111.

Orestes H. Caldwell
Editor

M. Clements
Publisher

Vol. V, No. 1
Copyright 1939

Caldwell-Clements, Inc.

Tel. PLaza 3-1340

480 Lexington Ave.

New York, N. Y.

Member Audit Bureau of Circulations

1939 SIGNS POINT TO NO
WHISTLING IN THE DARK

Optimism is rife and radio dealers
need not fear the road ahead. Year-
end business was good; new-year sales
are better. Even our bankers through-
out the country report an upsurge,
and business indices climb steadily.
If Europe doesn't toss a monkey
wrench into things with another war
scare, the U. S. should have its best
year since '36, say the experts.

Radio men generally report a good
closing for 1938 and are hopeful that
the next twelve-month will see a rise
in dollar volume as well as unit sales.
Most of them are adding electrical ap-
pliances and/or record departments to
hold up sagging sales. Later in the
year there should be some sales in
television and facsimile receivers.
Around New York and San Francisco,
the two fairs undoubtedly will pep up
business.

Portable, self-contained sets, auto
radios, radio-combinations and home
recorders will be good sellers. Statis-
tics compiled by Eadio Today, given
completely on pages 12 and 13, tell
graphically radio's rise, indicate fu-
ture growth.

SALES WENT DOWN IN '38
BUT NOT PAYROLLS

Checking 243 typical IT. S. radio
shops, the Bureau of Census reports
they lost 22.4 per cent business in
the first half of 1938. In 1937 they
did $3,897,000 from January to July,
and last year, sales totaled $3,024,000
for the same period. For all of 1937
they did $8,080,000.

These same stores in 1935 sold $5,-
602,000 worth of radio goods, and by
1937 their sales had jumped 44.2 per
cent. So even with the i938 slump,
they probably did more business over
other years. At the same time, 209
of them reported a payroll of $1,035,-
000 for 1937, a jump of 34.6 per cent
for this service over 1935. But in the

first half of 1938, payrolls slumped
6.1 per cent over 1937.

In the sales cut for 1938, the East
North Central Division was off 36.7
per cent, West North Central, 12.4,
while the West South Central Divi-
sion reported a gain of 5.9 per cent,
and the West and East South Central
Divisions as well as the Mountain Di-
visions combined to show an increase
of 10.8 per cent.

HAPPY OLD YEAR—
BC BIZ UP!

Business slump of 1938 to the con-
trary, two of the country's major
broadcast networks report spectacular
revenues for the past 12 months.

National Broadcasting Co.'s gross
income topped 40 million ; for the
first time in history, recording a rise
of 7.3 per cent over the prior year.
The exact total was $41,462,679 com-
pared to $38,651,286 for 1937.

Mutual Broadcasting System re-
ports billings of $2,920,323 for 1938,
largest since the network started, and
30.4 per cent more than the 1937 total
of $2,239,077.

RMA RENEWS DEMAND TO SCRAP
5 PER CENT 'NUISANCE' TAX

After a conference with Treasury'
Dept. bigwigs, directors of, RMA
have hopes for the repeal of the 5 per
cent "nuisance" tax on radio receivers
when the law runs out on June 30.

Headed by President A. S. Wells,
the directors put forth a six-point
blast to prove why the excise tax
should be scrapped. Radio is a ser-
vice like newspapers and magazines,
which are tax free and enjoy a mail
subsidy. It is a universal necessity
and not a luxury. The tax is giving
less each year to the U. S. because of
the trend toward smaller sets. Repeal
of the tax would sell more radios.
Present tax is hard to collect and has
caused plenty of headaches. These are
some of the points presented to
Undersecretary Hanes, who said they
would be given "careful and sympa-
thetic consideration."

Treasury Dept. reports on tax col-
lections reflect the industry for 1938.
This November $567,687 was paid in,
20 per cent below the 1937 figure of
$711,146. On this basis, RMA pre-

Complete statistics on radio production and use, appear on following pages.
Six million receivers were sold in 1938.

January, 1939

diets taxes for the year will be less
than four and a half million dollars,
or about the same as 1935 when some
6,000,000 sets were sold.

DISC MAKERS GET UP STEAM
FOR BANNER YEAR

Records have a banner year ahead
in 1939. KCA- Victor is putting on
full steam to keep up with the grow-
ing demand, while Columbia Broad-
casting System, sensing the trend,
bought American Record Corp. re-
cently and has announced vigorous
selling plans.

Edward Wallerstein, pioneer disc
man and recently sales manager for
EC A- Victor, is president of the CBS
affiliate, while Frank Walker, broad-
cast transcription manager for Vic-
tor, has been moved into Wallerstein's
place at Camden.

Predictions are for 45,000,000 rec-
ords to be sold this year. In 1938
some 35,000,000 discs went over retail
counters, an increase of 12 per cent
over the previous annual report. More
sales of radio-combinations, wired and
wireless playing attachments are also
expected.

"READO" IS THE LATEST

Further- news of facsimile comes
from Crosley Corp., which announced
commercial production of "Reado," a
facsimile set to sell for $150 com-
plete, $79 with no radio part, at its
Jan. 6-8 convention of 200 distribu-
tors in the Netherlands Plaza Hotel,
Cincinnati.

Heading American Record Corp., new

affiliate of CBS, is veteran disc seller

Edward Wallerstein.

With the new year, RMA pioneer

Donald MacGregor dealt himself a

new job as sales manager of Webster

Co., Chicago.

Reado will catch facsimile broad-
casts from Crosley station WLW in
the wee hours, iising the Finch sys-
tem. There is a clock to set the
reception and shut it off. Unless one
has a radio with a 5-watt audio out-
put, the entire set is needed, other-
wise the printer is sufficient. When
shown to newspapermen, it created a
sensation, but President Powel Cros-
ley, Jr., termed the product a "nov-
elty" and refused predictions on its
future use. For the present, "Reado"
is restricted to amateurs and experi-
menters. It reproduces type or pic-
tures in 2-column width on specially-
treated paper

RADIO CLIMBS AMONG
ADV. MEDIUMS

Nearly two billion dollars was spent
on advertising in the United States
last year, according to figures com-
piled by L. ~D. H. Weld, research
director for the McCann-Erickson
agency. Of the above amount $200,-
000,000 is represented by mechanical
costs, commissions, art expenses, etc.

Comparing the five principal media
used, the figures are as follows :

Newspapers $570,000,000

Radio 165,000,000

Magazines 165,000,000

Outdoor 50,000,000

Farm papers . . . 18,000,000

Direct mail, premiums, etc., make
up the estimated direct total of $1,-
768,000,000, which was 2.6 per cent
of the national income for the same
year.

VAST POCKET RADIO MARKET
SEEN BY DOLLAR-WATCH KING

Between 200,000) and a million
pocket radios could be sold within a
year if the set were practicable and
cost $5 or less. That's the opinion of
William H. Ingersoll who used to
market the famed dollar watch at the
rate of five million a year.

The pocket set could not be tem-
peramental and would have to be ad-
vertised widely and carefully mer-
chandized, Mr. Ingersoll, now a mark-
eting consultant, believes. He sees a
great potential market in a compact
radio that would fit into a pocket or
pocketbook.

Figures compiled by the Associated
Press show that about ten million
pocket watches of the inexpensive va-
riety were produced between 1935 and
1937. While this is a fairly saturated
field, pocket radio would have virgin
territory.

Sampling dealer opinion, Radio To-
day learned that many think a pocket
radio should weigh less than a
pound and should sell for about $5.
Larry Goetzman, president of Harger
& Blish Co., Des Moines, Iowa, dis-
tributors, sums up his opinion this
way:

"I feel that such a radio must be
even less than a pound in weight and
so designed as to fit the general con-
tour of pockets and pocketbooks. As
to price, I hardly believe, having only
local reception in mind, that the price
should be over $3, and battery life
possibly to be at a cost of 25 to 35
cents per month."

RCA Victor has moved Frank Walker

up to manage its record division and

plans full speed ahead for 1939.

Radio Today

RCA AND GE TO EXHIBIT
AT BOTH WORLD FAIRS

Already signed up for New York's
World Fair 1939, ECA will also have
an exhibit at San Francisco's Golden
Gate International Exposition, Pres-
ident David Sarnoff reports.

Opening with the West Coast show
on Feb. 18, the display will feature
experimental television, facsimile,
new automatic SOS and improved di-
rection finder as well as new home re-
ceivers. ECA, Eadiomarine, ECA
Communications, NBC and ECA
Mfg. will be represented. The exhibit
will occupy 15,000 sq. feet in the elec-
trical and communications building

General Harboard, chairman RCA,
and distinquished AEF commander,
who was married during the month.

with M. F. Burns, West Coast man-
ager, ECA Photophone, in charge.

General Electric also announces it
will exhibit in San Francisco as well
as New York with a "House of Mag-
ic," featuring such scientific oddities
^s radio fever machines, stroboscope,
and a "magic carpet" to float in the
air, defying Newton's law of gravity.

NOW IF THEY CAN DO SOMETHING
ABOUT THE OLD SNOW SHOVEL

Snowtime in the Sierras is now
lots of fun — thanks to radio.

Time was when snowplow operators
nearly went nuts seeing nothing but
mountains of white and hearing only
the roar of a tractor day in and day
out. Eadio technician John Eaar
changed that by selling the State of
California a radio for every plow,
using the loneliness angle as his sales
point.

Now, plowmen can tune in the lat-
est world news, or even receive an
SOS if anything goes wrong and they
are needed urgently.

By the now-familiar perisphere, Powel Crosley, Jr. (right) talks about Crosley'
Corp.'s exhibit with N. Y. World's Fair president, Grover Whalen.

68 NEW TUBE TYPES
REGISTERED IN 1938

Eecent release from E.M.A. points
out that registration has been made
for 68 radio tube types during 1938,
of which 10 are metal and the balance
glass. Incidentally, seven new 150
mil. 12-volt and 50-volt types are not
included in this list. Television tubes
are also omitted.

It looks as though the octal and
loktal type bases are here to stay for
65 of the 68 tubes use these types of

bases, and the remaining three tubes
employ a 4-prong or UX-type base.

Fortunately for the radio service-
men most of the added types are not
radically new, so with slight changes,
tube testing equipment in the field
can be used. 25 per cent of the new
tubes are the bantam type having an
equivalent in the octal-glass. Like-
wise the new single-ended tubes are
equivalent to types with a top cap.
But jobbers and dealers are not so
fortunate, for it is necessary to stock
many of these to meet every-day re-
placement requirements.

Eyes on the tube, gentlemen. It's the millionth midget GT type made by Arcturus
Tube Co. of Newark, N. J., and gazing fondly at it are, left to right, V.p. J. A.
Stobbe, Chief eng. Abbott Feindel, Plant Super A. E. Lyle and Sales Manager

Jack Geartner.

January, 1939

STATISTICS OF RADIO

UNCLE SAM'S ANNUAL BILL FOR RADIO

Sale of time by broadcasters, 1938 $140,000,000

Talent costs, 1938 30,000,000

Electricity, batteries, etc., to operate 35,000,000

receivers 1 50,000,000

6,000,000 radio sets sold in 1938 210,000,000

33,000,000 replacement tubes 40,000,000

Radio parts, supplies, etc 45,000,000

Servicing radio sets 60,000,000

U.S. Public paid for radio in 1938 $675,000,000

RADIO SETS IN USE

Jan. 1,1938 Jan. 1, 1939

U.S. homes with radios 26,666,500 27,500,000

Extra and "second" sets in above.. 6,000,000 7,500,000

Automobile radios in use 5,000,000 5,800,000

Total radio sets in use, U.S 37,666,500 40,800,000

Total homes with autos 18,500,000 19,000,000

Total residence telephones 12,000,000 13,250,000

Total homes with electricity 22,500,000 24,000,000

Total homes in U.S 32,000,000 32,250,000

Population U.S 1 29,500,000 1 30,600,000

THE GROWTH OF RADIO FROM 1922 TO 1939. ANNUAL SALES; HOMES WITH RADIOS

1922,

(Compiled for the 1939 BROADCASTING YEARBOOK by O. H. Caldwell. Editor of "Radio Today")

'27

'28

'29

1930

'31

'32

'33

'34

'35

'36

'37

1938

Grand Total: Sales of

Radio Apparatus for

Total Sets

Total Tabes Sold

Motor Car Seta

Broadcast Reception

Number

Value

Number

Value

Number

Value

1922

100,000

$5,000,000

1.000.000

$6,000

000

$60,000,000

1923......

1924

550.000
1.500,000

15.000.000
100.000.000

4.500.000
12.000.000

12.000
36\ 000

000
000

358.000.000

1925

2.000,000

165.000,000

20.000.000

48,000

000

430.000.000

1926

1927

1928

1,750.000
1.350.000
3.281.000

200,000.000
168.000.000
400.000.0UO

30.000.000
41.200,000
50.200.000

58.000
67.300
110.250

000
000
000

690.650.000

1929

4,428.000

600.000,000

69.000.000

172,500

000

842.648.000

1930

3.827.800

300,000,000

52,000.000

119.600

000

34,000

$3,000,000

496,432.000

1931

3,420.000

225.000,000

53.000.000

69.550

000

108,000

5.940,000

300.000.000

1932

3,000,000

140.000,000

44,300,000

48.730

000

143,000

7.150,000

200.000,000

1933

3.806.000

230,099.000

59.000.000

49,000

000

724,000

28.598,000

300,000.000

1934

4,084.000

270,000,000

58.000.000

36.600

000

780.000

28.000.000

360.000,000

1935»

6,026.800

330.192,480

71.000,000

50.000

000

1.126.000

54.662,600

370.000,000

1936*

8,248.000

450,000,000

98.000.000

69.000

000

1,412.000

69.188.000

500.000.008

1937*

8.064.780

450.000,000

91,000.000

85.000

000

1.750.000

87.500.000

537.000.000

1938*

6,000,000

210.000.000

."W. 000. 000

.SO. 000

000

800.000

32.000.000

350 000.000

* Figures for sets include

aluc of tubes in receivers

In recent years

replacement tubes have run about 40% of total tube sales.

0VSa\

Homes with

Aato Seta

Radio Seta

in Use

Total Radio

Sets in Use

Number

in U. S.

1922. . .

60,000

T400.000

1923.. .

1,000.000

1.500.000

1924...

2.500,000

3.000,000

1925. . .

3,500^000

4.000.000

1926...

5.000.000

1927. . .

6.500.000

6.500,000

1928.. .

7.600.000

8.600,000

1929. . .

9.000.000

10,500.000

f \

1930. . .

12,048,762
14.000.000

100.000

13,000,000

1931...

15.000.000

1932. . .

16.809.562

260.000

18,000.000

1933...

20.402.369

500,000

22.000.000

1934...

21.466.000

1.250.000

28,000.000

1935*. .

22,869.000

2.000.000

30.600,000

1936*. .

24.600,000

3.500.000

33.000,000

26.666.500
28.000.000

5.000.000

6.oo? ono

37,600,000

1938*..

40.800.000

All figures are at retail values, t Includes home-built sets.

NUMBER

OF SETS

UDE YEARLY

TOTAL HOME
RADIOS IN

10 MILLION

20 MILLION

30 MILLION 40

RADIO TODAY, JANUARY, 1939

TODAY

Radio Production, Sales, Utilization, as of Jan. 1,
1939. Industry Totals in Unit and Dollar Volume

RADIO-SET AND TUBE SALES, FOR YEAR 1938

Number Retail Value

Total radio sets sold during 1938. . . 6,000,000 $210,000,000

Radio sets exported 600,000

Automobile radios 800,000 32,000,000

Home radios sold in U.S 4,600,000 160,000,000

Consoles 1,000,000 62,000,000

Table models 3,500,000 85,000,000

Combinations 200,000 1 3,000,000

Home sets sold as replacements 2,100,000 84,000,000

Home sets sold to homes previously

without radios 1,000,000 40,000,000

Home radios sold as extra sets 1,500,000 36,000,000

Battery sets 800,000 32,000,000

Tube replacements 33,000,000 40,000,000

Tubes, initial equipment 35,000,000 43,000,000

Total tubes sold 1938 including

exports 75,000,000

Parts, supplies 45,000,000

Phonograph records 35,000,000 16,000,000

HOMES WITH RADIOS BY STATES

Ala 387,700

Ariz 81,100

Ark 264,800

Calif 1,771,000

Colo 243,500

Conn 419,200

Del 58,800

D. C 160,900

Fla 308,900

Ga 383,300

Idaho.... 100,700

III 1,912,100

Ind 841,900

Iowa 598,800

Kan 380,300

Ky 514,900

La 308,500

Maine... 210,100

Md 366,600

Mass 1,058,200

Mich 1,164,300

Minn 577,900

Miss 215,000

Mo 849,300

Mont 116,500

Neb 294,000

Nev 29,900

N. H 126,900

N.J 1,063,000

N. Mex.. 63,800

N. y 3,217,300

N. C 421,500

N. Dak... 122,100

Ohio.... 1,693,000

Okla .... 463,400

Ore 290,900

Pa 2,266,300

R.I 158,500

S. C 211,300

S. Dak.... 135,650

Tenn 469,400

Texas. ... 1,073,600

Utah 113,000

Vt 90,350

Va 408,200

Wash .... 452,300

W. Va... 355,200

Wise 635,200

Wyo 50,900

Total,

U.S.... 27,500,000

ROLL-CALL OF RADIO INDUSTRY, JAN. 1, 1939

Manufacturers of radio receivers 116

Manufacturers of radio tubes 12

Manufacturers of radio parts 705

Manufacturers of test equipment 60

Manufacturers of broadcast and amateur equipment 102

Manufacturers of sound equipment 98

Radio-set and parts distributors 2,021

Manufacturers' agents 239

Retail outlets selling radios 58,000

Dealers doing 85% of radio business 14,000

Servicemen, including dealers' servicemen 40,000

Radio amateurs and experimenters 81,000

Broadcasting stations, Jan. 1, 1939 (operating) 763

SALES OF REPLACEMENT PARTS, 1938

At manufacturers' selling prices

Transformers $1,500,000

Condensers $1,500,000

Vibrators $750,000

Resistors $600,000

Volume controls $370,000

Speakers $300,000

Service instruments $3,500,000

SOUND SALES, 1938

Units Retail Value

Sound systems (complete) 25,000 $5,000,000

Microphones 55,000 $1,000,000

Intercommunicators 15,000 $500,000

6,000,000 SETS MANUFACTURED IN 1938

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RADIO TODAY, JANUARY, 1939

LICK 1939

WITH
SALES PUNCH

Phone 'em; go get them, still are A-l
sales maxims. Below, sell radios
for every room is 1939 strategy.

Radio's merchandising minds tell how to
beat bugaboos and make this a banner year.

Radio has plenty of selling punch
for 1939. Gilt-edged plans for get-
ting some of that prosperity due in
the next twelve months.

Life has been no bed of roses,
lately, for the average radio dealer.
Console jobs found, a shrinking market
in 1938. Everyone clamored for
smaller and cheaper sets. When tele-
vision was announced in some areas,
higher-priced receivers took another
one on the chin.

After surveying the 1938 wind-up,
Radio Today went into a huddle with
manufacturers, jobbers and dealers
throughout the country. What — we
asked— can be done for 1939? Tell
us your strategy for nicking sales, for
pushing up unit sales as well as vol-
ume.

The answers came pouring in, and
they ran along strangely similar lines.
Everyone agreed, for instance, that
the radio-phonograph was the logical
"big buy" for 1939. Mr. Customer is
no longer taking "just a radio re-
ceiver" when he spends over a hun-

dred dollars. His music appreciation
upped by broadcasts of symphonies;
his yen for certain dance bands not
confined to any station schedule, he
has learned to want records of his
favorites.

At the crossroads

If he buys a radio-combination, he
wants to get records, too. Like the
Gold Dust twins, the two go hand in
hand. So the radio dealer will do
well to install a record department in
1939, our informants say, pointing
out that it can be done without any
great outlay of money. Disc com-
panies sell on liberal credit, and fix-
ture companies are getting out low-
priced store units which permit a
radio dealer to put in a record de-
partment at a small cost.

In other words, the radio man is at
the cross ways. He can diversify his
business by selling music — or he can
add electrical appliances and get the
cash that way. But he just can't de-
pend on radio alone!

Don't put all your eggs in one
basket. That's the watchword for the
coming year. But there are some
fundamental things the average deal-
er can do — basic principles he forgets
— that will help business.

He must keep his store neat and
attractive, and display his wares.
Covering up console models, not hav-
ing them connected for immediate
demonstration, never helped sales.
Show all of the quality lines and
keep as many as possible hooked up
for try-out.

When a customer enters a radio
store these days, he doesn't come for
the ride, our survey has shown. He
wants to buy a radio. But don't ask
him how much he wants to, pay.
That's a good way to kill a big sale.
One dealer has found it profitable to
have what he calls a "pivot set" on
his floor. This set contains all the
manufacturer's selling points, but is
medium-priced. Demonstrating this
set, the salesman soon finds out his
prospect's price class and desires.

Radio Today

If television is mentioned, point
out that television, still in its infancy,
will augment radio, not displace it.
But don't blast the new art too hard.
It is better to sell a prospect on the
idea that his radio receiver can be
converted for television, than to risk
ruining a sale by pooh-poohing video.
Besides, television will be marketable
later in 1939. And facsimile receiv-
ers also will be ready for sales. Here,
then, are two new things that may
well give radio a shot in the arm. But
there is no reason why they should
hurt the sale of radio receivers.

Time-tried methods click

From personal calls and numerous
letters, Badio Today finds all agreed
that the time-tried methods of getting
prospects are still good. Call up the
old customers and suggest a new, im-
proved receiver. Use your service
calls as a basis for putting a new
radio into the home for demonstra-
tion. Send out direct-mail advertis-
ing. Study your promotion media.
Does newspaper advertising pay? Do
you have specialized problems? For
instance, a dealer near New York's
Grand Central Terminal found that
ads in a suburban time-table bring
him a large commuter trade.

The main thing is to go out and
get the business. And that means
personal calls, phone calls, advertising
or promotion stunts. Study the
market and decide which get, best
results.

Credit buying will help

There are other ways to do more
business in 1939. Bortable, self-con-
tained radio receivers will be a best
seller. Requiring no antenna or elec-
trical connection they are sure-fire
articles for traveling folk, sports
people, campers, or those who go a-
sailing in southern waters at this
time. Some 13 manufacturers are
turning out these sets now, sensing
that their utility and convenience will
sell them. In some places, stunts
have sold these sets. At a restaurant
party, one dealer put a portable re-
ceiver on the table and drew much
attention from nearby guests. An-
other hired several lads to carry re-
ceivers through the streets. The
radio played, and amazed listeners
peered closely to see a placard on the
set with the dealer's name and ad-
dress thereon.

Home recording devices will boom
in 1939. Bush them. Budding mu-
sical artists can record their efforts,
then correct their faults on the play-
back. A dealer can make records at
(Continued on page 50)

Smart radio dealers
plan to sell plenty
portables this year to
folks who get around,
like above.

Our chic friend at
right swings to her
radio - combination,
the big buy in '39.
Records, too, will go
well.

Below, hook up fine
sets and show them
FIRST is a good
way to "sell up"
from pee-wee profits.

January, 1939

TELEVISION LOWDOWN

Where service will begin this Spring
Complete list of licensed stations

Open season for television starts in
April for New York's millions when
NBC goes on the air with regular
broadcasts. Program material for
many weeks of telecasting has already
been arranged for, so if the engineers
finish ahead of schedule, the program
directors will be ready to go.

Other stations to provide service in
the New York area are to be operated
by CBS and DuMont. Columbia hopes
to be on the air from the Chrysler
tower in May, while DuMont plans to
start some experimental broadcasts
from Passaic, N. J., in February and
regular program broadcasts at a later
date.

Another immediate prospect for
television is the Don Lee station in
Los Angeles which has been operating
for many months. This station,
formerly with low-definition images is
now going to the E.M.A. standard of
441 lines.

Getting ready

Jumping back to the) East, one
finds facilities in Philadelphia and
Camden, 1ST. J., that could soon be
put into service. Likewise is true at
Boston. Two significant construction
permits are held by G-E, one for a
station at Bridgeport, Conn., and the

other for Albany, N. Y. In Chicago
Zenith is getting its transmitter
ready, but judging by the company's
frigid attitude to television, it is for
experimental work in program tele-
casts.

Super-power station

The G-E transmitter for Albany-
Schenectady district will be built on
top of a 1,500-foot hill with an an-
tenna strung on 100-foot towers. This
station will be at least 250 feet higher
than the one atop the Empire State
building in New York. With a power
output of 10 kilowatts, it will cover a
combined population of more than
500,000 and will be put into operation
in three months.

Tabulated on this page is list of the
stations licensed for television by the
F.C.C. Since only those stations ope-
rating on the 4 and %l/2 meter bands
are suitable for broadcasting, they are
printed in boldface type. Wave-
lengths less than 4 meters at present
are used only for relay broadcasting
and experimental purposes. The 150
meter transmissions are insignificant
insofar as high definition television is
concerned, being a holdover from the
early experimental days.

None of the &l/2 meter stations

TELEVISION^ STATIONS IN U. S. LICENSED BY FCC

Wave Power In KW

Location Call Length Video Audio Owner

Boston, Mass W1XG 6 >/2 & 4 >/2 0 Gen'l Tel.

Bridgeport, Conn tWl 6 >/2 & 4 3 3 G. E.

New York, N. Y W2XAX 6>/2 & 4 7% 7>/2 CBS

New York, N. Y W2XBS 6>/2 & 4 12 15 NBC

Camden N.J. (Portable) } W2XBT 3 & m 04 0.1 NBC

New York, N. Y >

Long Island City, N. Y W2XDR 6 >/2 & 4 V2 V2 Radio Pictures

Passaic, N.J fW2XVT 6'/2 .05 .05 Dumont

Schenectady, N. Y tW2 iy2 G. E.

Albany, N. Y tW2 4 10 10 G. E.

Camden, N. J., (Portable) W3XAD 2K Vi H RCA

Philadelphia, Pa W3XE 6'/2 & 4 10 10 Philco

Camden, N.J W3XEB 6y2&4 30 30 RCA

Philadelphia, Pa W3XP \y2 .015 0 Philco

Springfield, Pa W3XPF 6>/2 & 4 \i 1 Farnsworth

Los Angeles, Calif W6XAO 6 1/2 & 4 1 0.15 Don Lee

Manhattan, Kansas W9XAK 150 >/8 >/8 Kan. State Coll.

Kansas City, Mo W9XAL 6>/2"& 4 0.3 0.15 First Nat. Tel.

W. Lafayette, Ind W9XG 150 \y2 0 Purdue Univ.

Iowa City, Iowa W9XK 150 0.1 0 Univ. of Iowa

Iowa City, Iowa W9XUI 6y2 & 4 .1 0 Univ. of Iowa

Chicago, 111 W9XZV 6i/2&4 1 1 Zenith

Mobile— Portable W10XX 614 & 4 .05 .05 RCA

tConstruction permit. Bold face type shows stations operating on 4 and 6]/2 meter bands.

should be overlooked, however, for
with a license to operate, only money
and hard work by the engineers are
needed to start telecasting entertain-
ment programs.

For Mr. and Mrs. Public in New
York and Los Angeles television is
just around the next corner — for
some half dozen other cities it is just
a bit further away. And by next Fall
there may be a dozen or more large
cities with television service.

NEW YORK DEALERS "GO"
FOR TELEVISION SETS

Interest is white hot in television.
Dealers want "sight and sound" re-
ceivers for prestige and "to be first".
They don't mind investing money for
several months until telecasts become
a reality.

That's the experience in metropoli-
tan New York of the Allen B. Du
Mont Laboratories of Passaic, N. J.,
who have sold 150 television receivers
in the past two months. Seventy-five
of these sets are already on dealer
floors; the rest are in production, and
there is a backlog of 200 orders for
television receivers to be delivered
when broadcasts begin — expected this
spring from the NBC station atop the
Empire State tower and from the
CBS transmitter on the Chrysler
Building.

Sets only on display

The sets are generally not being
sold to homeowners. They are used
for demonstration and display, al-
though dealers, of course, can sell
them if they wish. Despite this, radio
stores are not hesitating to put down
a ten per cent deposit on the $237
dealer cost, and are paying the rest
30 days after delivery. Using six
salesmen — one each in Brooklyn, Long
Island, Manhattan, The Bronx, West-
chester and nearby New Jersey, the
Du Mont people report no trouble
in finding sales.

Dealers are interested in a multi-
tude of questions about the new art.
Once assured that the set will aug-
ment rather than displace present
radios, they want to know all about it.
What does the cathode ray tube do
and how long will it last? What is
the replacement cost? Can television
broadcasts be extended beyond the
present 50-mile limit ? Why so many
tubes? Does the height of a building
affect the reception? Must a room be
entirely dark for television? Is a
coaxial cable needed for the lead-in?

These and a host of other "stiek-
(Continued on page 53)

Radio Today

Photo courtesy Grace Line

RADIO SAILS TO FOREIGN PORTS

American receivers find ready acceptance in other lands

Himself leading the world in own-
ership of radio sets, Uncle Sam is
still no slouch when it comes to find-
ing radio acceptance abroad. During
the last year the United States ex-
ported 618,710 receivers to 123 differ-
ent foreign countries.

In terms of saturation, the foreign
market has a rich aspect compared
with conditions here; there are 37,-

666,000 receivers in use in this coun-
try and only about 40,500,000 sets op-
erating in the rest of the world com-
bined. Radio ownership for U. S. is
reported as 290.15 sets per 1,000
people. The world's next highest sat-
uration point is in the little country
of Denmark, where there are 189.96
radios among every 1,000 Danes. Ger-
many ranks second in the total num-

ber of radios owned, having 9,087,454.
Below are presented the figures on
the "world of radio," with countries
ranked according to importance as
buyers of American sets. Our 20 best
customers are included, followed by
other nations of interest. Figures
came from the International Broad-
casting Union, the U. S. Dept. of
Commerce, Broadcasting, and XBC.

NO. OF SETS

WORLD RANK

RANK AS BUYERS
OF U. S. SETS

Mexico 1

Brazil 2

United Kingdom 3

Union of S. Africa 4

Cuba 5

New Zealand 6

Venezuela 7

Fra

nee

Portugal ... . . 9.

Colombia. .
British India

Chile

Canada. . . .

Peru

Turkey. . . .
Egypt

10.
11.
12.
13.
14.
15.
16
Uruguay 17.

PER 1,000 IN SETS PER FEES FOR SET

POPULATION 1,000 OWNERS SETS IN USE
.'. 20.83 40 None 350,000

. 11.11 44 None 500,000

183.58. 3 Set Tar 8,479,500

. . 88.18 22 Set Tax 180,227

. . 25.34 35 None 105,543

• 174.19. 4 Annual license 279,054

. . 21.25 39 None 85,000

. . 99.35 16 Set Tax 4,163,692

. . 9.4 47 Set Tax 65,280

. 6.4 — None 58,000

. . 0.18 — Set Tax 48,000

. 1 7.5 — None 75,000

. 97.85 18 Set Tax 1,103,768

Philippines.

China

Sweden . . .

Italy

Germany. .

Japan

Russia

18.
19.
20

None 39,000

... 21,500

— Set tax plus tube fee 70,000

— None 125,000

— None 25,000

— None 300,000

5 Set Tax 1,074,473

41 Set Tax 795,000

133.99 7 Set Tax 9,087,454

34.79 31 Set and monthly tax 3,402,489

22.12.. 37 Set Tax 3,760,400

6.3

1.5.

. 4.6.

59.5.

1.7.

0.81

170.55

. 18.36

January, 1939

INTERPHONE TRAPS BAD
MONEY PASSER AT THEATRE

An intercommunicating system in-
stalled between the cashier's booth
and the manager's office of a Phoenix,
Arizona theatre defeated an attempt
to pass off a counterfeit five dollar
bill, and opened up a new field for
such systems in theatres, skating
rinks, dance halls, amusement parks,
and other places where tickets are
sold to the public.

Business was normal at the Fox
Theatre in Phoenix one day recently
when a woman approached the cash-
ier to purchase a ticket with a bill
which the theatre employee suspected
was spurious. The resulting conver-
sation was heard through the inter-
phone system by Manager Louis B.
Cbrist in his office.

Hurrying to the booth, Mr. Christ
questioned the woman, who thereupon
produced a good bill, bought her
ticket and entered the theatre. The
manager phoned F.B.I, agents, but
before they could arrive the woman
had disappeared.

The system, installed by Culver

Radio Service, RCA Victor Commer-
cial Sound Distributors at Phoenix,
consists of a master control unit on
the manager's desk and remote units
in the projection booth and at other
locations, including the cashier's of-
fice. The system is arranged so that
the line from the cashier's booth is
always open, for just such emer-
gencies as that which occurred.

AMPLIFIED CHIMES

Mysteriously, chimes are ringing
out in church belfries all over the
country. Towers are certainly for
chimes and it is certainly appropriate
that the electronic art has now
brought to life the "voice of the
church." All churches using these
chimes, who have reported on their
congregations over this last Christ-
mas, advise that they had the largest
attendance that they ever had.

The ease with which these chimes
speak out is, of course, no mystery
to servicemen; amplification and the
tower projection of tones is the right
answer. Not only is it the right an-
swer because of economics, but it
need not take second place to any
other method for producing chime
tone, states Maj. R. H. Ranger of
Rangertone, Inc., manufacturer of
amplified chimes.

There are two general methods
of electronic chimes; the first and

Amplified chimes at any time over the speaker system in church belfry is possible
with this Rangertone set-up using an automatic playing mechanism.

Ex-foreign secretary 'Tony Eden of

England uses Western Electric's new

noiseproof cardioid mike to blast the

dictators before U. S. bigwigs.

more completes where funds and
facilities are available, is the
use of standard tubular chimes,
preferably placed in a sound proof
room with a microphone pickup and
appropriate tone projection. Where
chimes are in the organ already, it is
possible to pick these up with a mi-
crophone in the organ chamber.

The second method, and one that
is becoming increasingly attractive,
is the use of sensitive records which
have been made for this purpose.
These records provide a very inexpen-
sive method of getting the tone source
and also makes chiming that is auto-
matic and frees the organist at par-
ticularly important times in his work
before and after services.

SMART SHOPS USE SOUND
TO SELL XMAS THINGS

Smart Fifth Avenue shops went
overboard this season in using sound
to help Christmas sales. Leading the
parade was Lord & Taylor's "bell win-
dow" which drew record crowds. The
department store startled competition
last year by keeping every window
clear of merchandise. Store fronts
were filled with white, Christmasy
scene and tolling bells. Bells were
synchronized with phonograph-played
chimes. This year they repeated.

Not to be outdone, Franklin
Simon's promotion people put in an
impressionistic display with angels
playing organs. White and gold was
the color motif, and again, not a bit
of things to buy. A sound system
furnished organ music. S. H. Kress's
deluxe dime store, compromised by
setting one window aside for a realist-
ic scene of The Nativity. Sacred mu-
sic, via records, poured out of a
grilled panel above.

Radio Today

PUSH THOSE PORTABLES

Something new for a radio-jaded
public — where to sell 'em and how

For a selling "shot-in-the-arm" try
the portables in 1939. That's the
word going around. And it's based
on solid facts, for the self-contained
receivers, needing no antenna or elec-
trical connection, have been a sales
sensation.

For the coming season, they're go-
ing to go even faster. So fast they'll
make the well-known hot cake look
as slow as a Floradora girl in a
streamlined night-club chorus. Smart
radio dealers are thinking up new
ways to sell these sets to cash in on
their wide possibilities.

Sixteen manufacturers are turning
out portables at an average retail cost
of $30, including batteries. They
weigh about 15 or 17 pounds (al-
though some are as light as 12) and
are ideal for traveling. New, efficient
tubes, better batteries give them an-
other strong sales point. In fact, the
juice providers will usually last long
for the entire summer without a re-
placement.

Plenty of prospects

There are plenty of prospects for
these small, compact jobs. One man
who has sold 260 sets in the last sev-
eral months told us he found vaude-
ville, night club and other actors
anxious to buy a portable for use
backstage in their dressing-rooms or
while traveling. Salesmen on the
road are other candidates for a sale.
They are ideal for camping trips, for
use at the beach, and in this weather,

PORTABLE PROSPECTS

Traveling salesmen, executives

Actors, entertainers for dressing rooms and

trips
Business men for part-time office use
Campers, picnic fans, vacationers
Skiiers and other outdoor sports followers
Servicemen, dealers to locate interference

PORTABLE PLACES

Motorboats, sailboats, canoes, yachts
Autos and trailers, hotels, overnight camps
Football, baseball games, races, beaches
Sleigh rides, bicycles, motorcycles

while skiing is so popular, they can
be sold to the outdoor fans. In
Seattle, Philco dealers got together
on a newspaper advertisement and
pushed the "Pal" portable radio as
just the thing for the skiiers.

In New York City, where a Xmas
sell-out made them almost impossible
to get, Alfred Tuffery of Wurlitzer's
took a portable to a nearby restau-
rant for an office party. Guests were
attracted and amazed when the port-
able turned out tunes with no elec-
trical or aerial connections. Another
merchandiser, J. M. A. McGuire, sent
lads through the street with the tiny
sets. On each receiver was a placard
with McGuire's address, and while
being carried, the sets played.

Where permanent installations are
not wanted, the new portables can

be sold for trailers, motorboats, auto-
mobiles, hotels, overnight camps.
They are ideal, too, for places where
no power supply is available such as
sailboats, canoes, football and baseball
games, bicycles, motorcycles, on sleds.

Another use for them is as inter-
ference locators for dealers and ser-
vicemen. The business man, too, is
a prospect, as he can often use a
portable in his office, bringing it there
to tune in on some special newscast
or other important event. Race-
tracks followers also are buying them
to get results at one track while visit-
ing another.

Most dealers are featuring the port-
ables in their window and floor dis-
plays as well as in direct-mail and
newspaper advertising. Neat in ap-
pearance, covered with sturdy wear-
resisting fabric or leather, the port-
ables almost sell themselves. For
1939 they're going to be an important
sales factor.

Listed to date as making portable
receivers are Philco, RCA, Westing-
house, Sentinel, Mission Bell, Wells
Gardner, Continental, Belmont, How-
ard, Crosley, Emerson, Fada, Dewald,
Pilot, Warwick, and Espey.

NO S.R.O. ON THE RADIO

"S.R.O." signs may be up at the
Metropolitan opera, but for the
radio listeners there's always a seat
in Box 44. That's the theme of a new
promotion brochure released by NBC's
E. P. H. James.

Which would seem like a good sell-
ing point for radio dealers. Just
think of the millions represented in
the Metropolitan Opera's shows and
audience. Yet any music lover, no
matter what his economic status, may
have a front-row seat — if he buys a
radio receiver.

SMART, COMPACT, LIGHT WEIGHT, CONVENIENT -DESCRIBES THESE NEW PORTABLE RECEIVERS

% $

ESPEY

WESTINGHOUSE

MISSION BELL

RCA VICTOR

ST**^!

IT'S A RECORD YEAR

CBS entry into disc field announced;
Sale of 45 million platters forecast

CBS BUYS RECORD FIRM,
PLANS BIG EXPANSION

There's a swing to records, bigger
each year. Radio dealers are adding
it to their line as radio-phonograph
combinations and player attachments,
growing in popularity, provide a bet-
ter market for sale of discs.

In 1939, there will be 45,000,000
records sold, say those in the know.
Anxious for some of that business,
Columbia Broadcasting System in
December purchased the American
Record Corp., producers of Columbia,
Vocalion and Brunswick labels.

First step in Columbia's annexa-
tion was to appoint Edward Waller-
stein, pioneer record man and RCA-
Victor's sales manager for Bluebird
and Victor discs, as president of the
new CBS affiliate. Other officers,
these on a temporary basis, are:
Frank K. White, treasurer; C. C.
Boydston, assistant treasurer; Ralph
F. Colin, secretary.

Said CBS President William
Paley : "The popularity of home rec-
ords has grown tremendously during
the last few years and there is every
indication that future increases are
assured. Our primary purpose will be
to find new patterns for both serious
and popular music. . . . We plan to
accelerate sales by both vigorous busi-
ness management and by innovations
in production and marketing. Spe-

cial interest will be paid to the field
of education."

LOW COST RECORD SET-UP

Radio men are turning to record
departments more and more as the
sale of radio-combination sets goes
speedily ahead. Others hesitate be-
cause they think it means too much
capital.

Holds 135 records on the counter.

To offset this fear, along comes A.
Bitter Construction Co., 27-01 Bridge
Plaza North, Long Island City, K Y.,
with news of low-priced installations.
The Bitter firm is offering a metal
disc display unit for $4.50 and an-
other one that may be hung on the
wall or put on the counter, for $6.75.
Then there is an upright wooden
rack, holding 1,000 records, available
at $40 (the metal racks hold more
than 100 discs).

Sound-proof demonstrating rooms
may be had from the same outfit at
$200. These and the racks are in unit
system, so a radio man may start
modestly and add to the department
as business gets better.

As smart as these folks' evening clothes is the new G-E wireless record
player which sends music through the nearby radio without wiring fuss.

RCA SEES DISC SALES AT
NEW HIGH FOR 1939

RCA Victor's year-end record busi-
ness was so good that it required
three shifts, six days a week to keep
up with the demand, reports Presi-
dent G. K. Throckmorton. With
Frank Walker as recently-appointed
manager of Bluebird and Victor disc
sales, 1939 should be even better, says
RCA Mfg. prexy.

High artistic standards and the ex-
penditure of approximately $1,500,000
in advertising and promoting records
and RCA Victrolas helped create the
demand, Throckmorton believes. He
sees full speed ahead in the next
twelve months.

Commenting further on Walker's
appointment, Throckmorton says:

"In his added responsibilities, Mr.
Walker will be assisted by the group
of specialists and their staffs who
have been largely responsible for the
development of the company's record
and Victrola business : W. T. Walker,
manager of record manufacturing (no
relation to Frank Walker) ; Max
Batsel, in charge of recording re-
search activities which in addition to
records includes sound motion picture
films ; Fred Wilson, director of field
sales activities; Vance Woodcox, vice
president in charge of package good
sales; Eli Oberstein, in charge of
popular recordings; Charles O'Con-
nell, director of Red Seal recordings;
Tom Joyce, advertising and sales pro-
motion manager; Julius Haber, pub-
licity director.

"This group of men, and others, to-
gether with the more than fifty RCA
Victor wholesalers and thousands of
loyal RCA Victor dealers, under
Frank Walker's leadership will assure
the continued progress and leadership
of RCA Victor in the recording field."

WAX WORTH
WATCHING

RUDY VALLEE and his Connecticut Yankees play-
ing Surprises, No. 1 with VR by Red Stanley, No. 2
with VR by Cyril Smith— Bluebird B10069.

GENE KRUPA and his orchestra playing Jeepers
Creepers with VC by Leo Watson and Say It With a
Kiss, with VC by Irene Daye, both from "Going
Places" — Brunswick 8280.

EDDIE DELANGE and his orchestra playing What
This Country Needs Is Foo, with VR by Elisse Cooper,
and I Ups to Her and She Ups to Me with VR by
Eddie DeLange— Bluebird B10074.

SAMMY KAYE playing The Umbrella Man with VR
by the Three Barons and chorus, and You're Gonna
See a Lot of Me with VR by Charles Wilson— Victor
26117.

GUY L0MBARD0 and his Royal Canadians playing
The Girl Friend of the Whirling Dervish from "Garden
of the Moon" and I Must See Annie Tonight, both
with vocal trio — Decca 2195.

MARY MARTIN with Eddy Duchin and his orches-
tra, singing My Heart Belongs to Daddy and Most
Gentlemen Don't Like Love— Brunswick 8282.

Radio Today

is the line for 39"

• •

. that's the echo from Cincinnati. That's the
echo of the most enthusiastic distributors' meeting
in Crosley history, when new merchandising plans
for the Shelvadors, appliances and radios were
disclosed. Full cause for cheers are found in:

Carefully planned merchandise to entice and en-
thuse the 1939 prospect.

O Three separate lines of Shelvadors to cover every
price bracket and win every competitive situation!

Q Promotion ideas that promise better profits and
great volume to all classes of dealers.

/L Disclosure of where plenty of prospects for 1939
Shelvadors can be found.

^L Information about new Crosley products which
greatly enhance the value of a Crosley franchise.

Distributors cannot reach all dealers at once. Don't wait.
Go to them. Write the factory. Hear the 1939 story now.
Get an early start. Now is the time to get going, for

CROSLEY'S THE LINE FOR 39.

THE CROSLEY CORPORATION

Home of "the Nation's Station*'' — WLW — 70 on your dial
POWEL CROSLEY, Jr., President CINCINNATI

January, 1939 21

NEW RADIO MERCHANDISE TO SELL

Latest news of radio products from manufacturers

Philco auto radio

■*• Advance 1939 receiver for use
in any model auto. 6-tube superhet
chassis tuning 550-1580 KC. Illumi-
nated push buttons for 5 stations
and dial tuning. Reception control
with 3 illuminated buttons. Con-
trols mounted at bottom of instru-
ment panel. Full-wave vibrator.
Model 937. Philco Radio & Tele-
vision Corp., Tioga & C Sts., Phila-
delphia, Pa. — Radio Today.

Stewart-Warner receivers

•k Eight models have been added
to the S-W line, The Campus model
lists for $9.95. AC-DC operated
with 5 tubes— tunes 540-1750 KC.
Illuminated tip-pointer type dial.
Power output of 2.1 watts — 4-inch
dynamic speaker. Plastic cabinet.

8-tube console wth magic key-
board tuning for 6 stations. Tunes
540-1750, 5280-16,050 KC in 2 bands.
Phonograph terminals. Output of 6
watts — 10-inch dynamic speaker.
Model 01-817— list $69.95. Stewart-
Warner Corp., 1826 Diversey Pky.,
Chicago, 111. — Radio Today.

Record player

* Portable-type record player
with built-in amplifier and speaker.
Plays 10 and 12-inch records at 78
r.p.m. AC operated. Output of 3
watts, 6-inch speaker. Volume and
tone controls. Leatherette-covered
case. Radolek Co., 601 W. Randolph
St., Chicago, 111. — Radio Today.

Stromberg interim models

■k 8 authentic Period design
radios including 2 table sets, 2 cor-
ner models, 2 slanting-panel con-
soles. Model 325H illustrated has
dual band coverage, push-button
tuning — superhet chassis.

Console with acoustic labyrinth
and flash tuning. Cathode-ray in-
dicator for manual tuning. 3-band
coverage. Circuits stabilized against
drift to prevent detuning. Model
350S. Stromberg-Carlson Telephone
& Mfg., Co., 100 Carlson Rd., Roches-
ter, N. Y. — Radio Today.

G-E 1939 models

* Series of five table models and
three console sets and a wireless
record player. Model G-86 all-wave
console has 8 tubes and incorporates
the beamascope. Model G-78 with
7 tubes has the same features as
the G-86 except for the omission of
beamascope and cathode ray tuning
indicator. The table sets included
AC-DC models with 5 and 6 tubes,
some with plastic cases in color.
General Electric Co., 1285 Boston
Ave., Bridgeport, Conn. — Radio To-
day.

Arvin auto radios

* 6-tube superhet at top with
phantom filter and 8-inch speaker
unit. Model 44C with universal re-
mote control — list $46.10. With cus-
tom instrument panel control —
$49.95. 6-tube push-button receiver
with manual tuning. Phantom filter
to eliminate noise pick-up. Mounts to
right or left of steering post. Model
8A— list $29.95. Model 6 without
manual tuning but with station
variator lists for $22.95 including
aerial. Noblitt-Sparks Industries,
Columbus, Ind. — Radio Today.

Phonograph with Philco

* 5-tube combination with semi-
automatic phonograph. Push-button
tuning for popular stations. Bal-
anced field speaker with inclined
sounding board. Bass compensation
and continuously-variable tone con-
trol. Model 107 illustrated. A table
set known as the model 101 with a 5
tube chassis is available. Model 105
is a 5-tube console combination list-
ing for $69.95. Philco Radio & Tele-
vision Corp., Tioga & C Sts., Phila-
delphia, Pa. — Radio Today.

Radio Today

RCA 1939 models

•k Line of 6 low-cost table sets
and 2 consoles. Model 97K2 illus-
trated has 7 tubes. Features electric
tuning, 3-band coverage with tem-
perature-compensated circuits. Magic
eye indicator, Victrola push-button
switch. Variable tone control. List
$75.

i^^^^u

l*s

5-tube AC-DC dual-band superhet.
Push-button tuning for 5 stations.
Beam power output tube, vernier
tuning, AVC, Underwriters' ap-
proval. Continental style cabinet.
Model 96T-4— list $29.50. RCA Mfg.
Co., Front & Cooper Sts., Camden,
N. J. — Radio Today.

Emerson chest receiver

•k 5-tube AC-DC superhet re-
ceiver in chest model cabinet with
curved ends. Staybent construction
with continuous veneers. Power
switch controlled by raising and
lowering lid. Dynamic speaker,
automatic volume control. Model
238 — list $24.95. Emerson Radio &
Phonograph Corp., Ill Eighth Ave.,
New York. N. Y. — Radio Today.

Thordarson amplifier

•k 8-watt amplifier for portable
or permanent installations. Indi-
vidual mike and phono controls and
tone control. Supplies 6-watts field
excitation for speaker. Variable out-
put impedances. Model T-20WO8—
list $39.50. Thordarson Electric
Mfg. Co., 500 W. Huron St., Chicago,
111. — Radio Today.

Sound console

•k Mobile sound system to pro-
vide special sound effects via re-
cordings and direct pick-up. 4-chan-
nel input, 3 professional turntables
with "spotting" mechanism. 2 com-
plete 30-watt amplifiers. High and
low filter networks. Complete man-
ual control of all functions. Whole-
sale Radio Service Co., 100 Sixth
Ave., New York, N. Y— Radio To-
day.

Sentinel compact

* 5-tube superhet receiver tun-
ing 540-1730 KC. Output of 2 watts.
Drum dial with direct drive. AC-
DC operation 3%-inch dynamic
speaker. Model 177UT^list $9.95.
Sentinel Radio Corp., 2222 Diversey
Pky., Chicago, 111. — Radio Today.

Zenith wireless record player

■*• AC record player for use with
any radio set. Constant-speed 78
r.p.m. motor. 540 KC oscillator ad-
justable to meet local conditions.
Crystal pick-up. Plays 10 and 12-
inch records. Use anywhere in
house within hearing range of radio
set — no connections to set. Model
S6622. Zenith Radio Corp., 6001
Dickens Ave., Chicago, 111. — Radio
Today

Amplified chimes

k Chimes for use in churches,
schools, etc. using amplifier equip-
ment instead of actual bells. Re-
corded chimes ideal for low cost in-
stallations. Tubular chimes with
manual and automatic players for
more flexible installations where
cost is not primary factor. Complete
set-ups available with speaker units
and amplifiers. Rangerione, Inc.,
201 Verona Ave., Newark, N. J. —
Radio Today..

Admiral phonograph-radio

* 6-tube AC combination tuning
560-175 and 54-16y2 meters. Slide-
rule type dial. Push-button wave-
change switch. Permeability push-
button tuning. Crystal pick-up with
self-starting motor. Model 549-6G.
Continental Radio & Tel. Corp.,
3800 W. Cortland St., Chicago, 111.
— Radio Today.

Six-tube G-E model G-64 provides touch tuning and two-band coverage with
6/2 -inch stabilized dynamic speaker.

January, 1939

NO AER»£y

MO GROUND!

M THESE

SEHSA1WHALW

LOW PRICES

Think o£ it'- A completed b ^ ^ loW ^

^ound in a line of radios £t ^ 5D d
59.98. And that's ^ a»duces a unique mter-

6K, the ^f/Xt eHectively reduces statxc

f ^l Shnle NotnL W- " ever before .

and other noise. » ,

Only Admiral could do

THIRTEEN new radios ... a baker's
dozen of money-makers for the win-
ter and spring months. Features galore!
.fleroscope . . . the built-in aerial and
ground with unique interference shield
... is only one of them! Colorful cabinets
smartly molded of Plaskon . . . auto-
matic tuning . . . portable battery radios
and phono combinations styled like
modern airplane luggage. You'll find
them all in our new circular opposite.
Keep it for future reference ... or ask
your jobber for a supply for distribution
to your customers.

CONTINENTAL RADIO & TELEVISION CORP.

3800 WEST CORTLAND STREET • CHICAGO, ILLINOIS

SPECIAL
CIRCULAR

FOR NEW

MONEY

Model 161-5L

Walnut Plaskon Cabinet

162-5L A

161-5L>

ADMIRAL "SMART SET" 6-TUBE (INCLUDING BALLAST) AC-DC SUPERHET

We call it the Admiral "Smart-Set" — a fitting name for its smartly styled molded
plaskon cabinet of cream onyx, cream ivory or rich walnut. Tunes complete broad-
cast band (535 to 1730 K.C.). Exceptional tone quality of super electro dynamic
speaker enhanced by louvre type tone chamber. Complete with built-in Admiral
Aeroscope! No aerial or ground required.

ADMIRAL RADIO PHONOGRAPH COMBINATIONS -*

Admiral sounds a new note in radio phonograph combinations. A 6-Tube radio
(including ballast) tunes complete broadcast band (535 to 1730 K.C.). Delightful
tone quality of super electro dynamic speaker enhanced by louvre type tone
chamber. Complete with built-in Admiral Aeroscope. No aerial or ground needed!
Phonograph has new light weight crystal pick-up with quiet self-starting electric
motor. Plays 10" and 12" records. For AC operation only.

Model 153-5L. Admiral "Gypsy". Completely portable in modern airplane lug-
gage case with convenient pocket for records. (As Shown) $36.95

Model 159-5L. Straight grain walnut cabinet with piano finish (Not Shown) $32.95

" %

153-5L

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iONIKm ON ilYIHH ON

ADMIRAL 6-TUBE AC SUPERHET

In Beautiful Walnut Cabinet

Model 148-6K. Has all the latest features!
Feather touch automatic push-button tuning for
four stations . . . unique ribbed wheel type station
selector and on-off switch with volume control in-
stead of conventional tuning knobs . . . super
;lectro dynamic speaker . . . attractive slide rule
3tched glass dial . . . full automatic volume control.
Tunes entire broadcast band from 535 to 1730 K.C.
Complete with built-in Admiral Aeroscope. No
aerial or ground required $27.95

CONTINENTAL RADIO & TELEVISION CORP.
3800 W. CORTLAND ST. CHICAGO, ILL.

NO AERIAL! NO GROUND!

TH THE NEW

j^^r

PORTABLE BATTERY RADIO

Model 164-4D. Modern airplane luggage case.
4-tube, lVs volt superhet battery radio has 5" perma-
nent magnet type speaker. Tuning range 535 to 1730
K.C. Complete with built-in Aeroscope. No aerial or
ground required $24.95

5-TUBE AC-DC SUPERHET

5 full-working tubes! Tunes entire broadcast band
(535 to 1730 K.C). Has full vision dial, vernier tuning,
4" electro dynamic speaker, automatic volume control.
In compact, smartly styled plastic cabinets.
1 56-5J (walnut) . $9.95 1 57-5J (ivory) . $1 2.95

158-5J (onyx). $14.95

FIRST

DONALLY LOW PRICES

MORENEWTHINGS

fSHsa
Andrea television kit

k 16-tube television receiver kit
using 5-inch short-neck picture tube.
Set uses push-button tuning. Sup-
plied with step-by-step assembly in-
structions. Performance equal to
factory-built set. Six controls on
front of set. Complete with video
and audio channels. F. A. D. Andrea
Corp., 48-02 48th Ave., Woodside, L.
I., N. Y— Radio Today.

Arvin home radios

* Additions to the 1939 line in-
clude 9 new models at popular
prices. Model 89 illustrated is a
6-tube AC set tuning broadcast and
short waves in 2 bands. Push-but-
ton tuning for popular stations —
cathode-ray tuning indicator for
manual. List $44.95.

8-tube console tuning 3 bands.
Electric eye tuning indicator, push-
button tuning. Phonograph termin-
als on chassis. 12-inch dynamic
speaker — power output of 11 watts.
Model 92— List $99.95. Noblitt-
Sparks Industries, Columbus, Ind.
— Radio Today.

Transmitter kit

* Multi-band transmitter kit
with instantaneous band switching
from the front panel for 3 bands.
100-watts input on all bands from
10 to 160 meters. R.P. and power
supply on one chassis. Speech
equipment with its power supply on
separate chassis. Uses standard
parts. Described in bulletin SD-378.
Thordarson Electric Mfg. Co., 500 W.
Huron St., Chicago, 111. — Radio To-
day.

Parts cabinet

•k Wooden parts cabinet for use
in the shop. Model 1740 has 40
drawers with removable partitions.
24 drawers measure 2V2 inches high
x 4 x 14 inches deep. 16 drawers
measure 2^x6x14 inches. List
$29.80. Other types available to suit
all applications. J. D. Warren Mfg.
Co., Montpelier, Ohio — Radio Today.

Compact multi-range meter

* Multi-meter with 5,000 ohms-
per-volt sensitivity and 3-inch me-
ter. AC and DC ranges of
0/6/30/150/600 volts; DC current of
0/.3/6/30/150 mils; resistance,
0/2M/20M/200M/2meg ohms. Also
calibrated in decibels. Weighs but
23 ounces with self-contained bat-
teries—3 x 5% x 2 inches. Model 542.
Supreme Instruments Corp., Green-
wood, Miss. — Radio Today.

Cardioid microphone

■*■ Directional-type microphone
with dead spot at rear. Designed
for installations where it is desir-
able to reduce pick-up from rear and
sides, yet where a wide-angle pick-up
is necessary. Directional properties
equally good for bass and highs.
Employs non-directional pressure
unit and bi-directional ribbon of
new design. Western Electric Co.,
195 Broadway, New York, N. Y. —
Radio Today.

Tube seller

* Emission-type tube checker in
large counter stand with 9-inch
meter. Hot-cathode leakage test
with neon tube. Line-voltage ad-
justment read on meter. Free-point
tube analysis. Electronometer model
815 — net $49.95. Precision Appara-
tus Co., 821 E. New York Ave.,
Brooklyn, N. Y. — Radio Today.

Centralized sound system

•k Low-cost compact sound sys-
tem for schools, industrial plants,
etc. Provides coverage for up to 30
rooms, and may be extended to
cover auditorium, gymnasium, etc.
Separate controls for each room, al-
lowing program distribution or con-
versation with any desired rooms.
Vocagraph Sound Systems, 164 N.
May St., Chicago, 111. — Radio Today.

Philco wireless record player

•k AC-type record player requir-
ing no connections to set. Transmits
on frequency of 1550 KC from self-
contained aerial within radius of 60
feet. Crystal pick-up with illumi-
nated tone for ease in placing
needle on record. Plays 10 and 12-
inch records. Model 39RP1— list
$19.95. Philco Radio & Television
Corp., Tioga & C Sts., Philadelphia,
Pa. — Radio Today.

January, 1939

NEW THINGS

Dual atoms

• Dry-tubular electrolytic con-
densers in dual sections with 50 to
450-volt ratings Capacities of 8, 10,
12, 16 mikes. Proofed against blow-
outs, yet hermetically sealed.
Sprague Products Co., North Adams,
Mass. — Radio Today.

Ballastron plug-in resistors

* Line of three plug-in resistors
to replace line-dropping resistors in
AC-DC sets. Three types replace 98
per cent of units bearing R.M.A.
type numbers plus about 300 special
manufacturers' numbers. Micamold
Radio Corp., 1087 Flushing Ave.,
Brooklyn, N. Y. — Radio Today.

Kontak mike

* Contact-type microphone with
higb output so that it can be used
with home radio set. Output level
of — 30 DB. Flat response within
1 DB from 60-8,000 cycles. Applied
without tools by means of adjust-
able clamp. Model SKH — high im-
pedance— list $12. Amperite Co.,
561 Broadway, New York, N. Y. —
Radio Today.

Hermetically-sealed
attenuators

* Glass-sealed attenuators with
perfect protection against all at-
mospheric conditions. Furnished to
match impedance of any line and
give any loss from V± to 40 DB.
Fitted with radio-tube base to fit
standard socket. Obtainable in H.
pie, T, and L pads for low wattage
applications. Ohmite Mfg. Co., 4835
Flournoy St., Chicago, 111. — Radio
Today.

Clarion sound system

•k 15-18-watt portable sound sys-
tem. Beam-power output stage. Dual
10-inch speakers in baffles. Choice
of microphone. Multi-output im-
pedances. Fabricoid carrying case.
Model C-416 — complete ready to op-
erate—list $108.60. Transformer
Corp. of America, 69 Wooster St.,
New York, N. Y. — Radio Today.

Replacement speakers

■*■ Line of replacement speakers
with uni-match transformers that
cuts down inventory. Transformer
mounted on speaker by means of
2 self-tapping screws. Rotary switch
adjusts transformer to hi, lo, or
medium impedance. Operadio Mfg.
Co., St. Charles, 111. — Radio Today.

High-voltage resistors

* Line of metallized resistors
for high voltage. Available in 4 and
150-watt ratings with 5,000 and
100,000 volt capacities. Metallized
element applied in spiral on ceramic
base. International Resistance
Corp., 401 N. Broad St., Philadel-
phia, Pa. — Radio Today.

' ' ■"■' ■'■■' ■ I -.■ '■■■." :: ....■-■ :::'j

SbM

r«jjSr~|

■ ftSHHCM :

1 . :T

Amcon condensers

* Line of transmitting capaci-
tors, impregnated by a process that
combines safety factor of oil and
economy of wax impregnation.
Sealed in steel cans with high-melt-
ing point wax. American Condenser
Corp., 2508 S. Michigan Ave., Chi-
cago, 111. — Radio Today.

Electronic switch

* Combined square-wave genera-
tor and electronic switch. Switch
permits simultaneous study of 2
separate waves on the oscilloscope.
Switching rate of 6 to 2000 times
per second. Switching impulses or
tails reduced to degree where they
are no longer objectionable. Square-

wave generator operates between 60
and 400 cycles per second and is
useful for checking amplifiers. Allen
B. Dumont Labs., 2 Main Ave., Pas-
saic, N. J. — Radio Today.

Coil repair service

* Repair and rewinding service
for all types of radio coils. Prompt,
efficient service. Simply send the
defective coil accompanied by as
much pertinent information as pos-
sible. Coil will be repaired for a
flat rate of $1 per unit. Meissner
Mfg. Co., Mt. Carmel, 111.— Radio
Today.

ATR vibrators

•k Line of replacement vibrators
with 3/16 diameter tungsten con-
tacts. Perforated reed of Swedish
spring steel. Highly-efficient mag-
netic circuit. Mica and metal stack
spacers. Vibrator replacement chart
available on request. American
Television & Radio Co., 300 E. 4th
St., St. Paul, Minn. — Radio Today.

Portable amplifier

* Sound system with 2 mike in-
puts and 1 phono input. Separate
gain controls permit mixing. Bass
tone control peaking at 100 cycles,
treble peaks at 7,000. Volume indi-
cating meter. Illuminated dial cali-
brated in decibels. 12-inch p.m.
speaker in peri-dynamic baffle. At-
tractive leatherette carrying case.
Universal Microphone Co., Ingle-
wood, Cal. — Radio Today.

Communications receiver

* 8-tube receiver with r.f. ampli-
fier on all band. Ceramic coil forms.
Electrical band spread — crystal fil-
ter. Tunes 540-43,000 KC. in 4
bands. Model 438, Howard Radio
Co., 1735 Belmont Ave., Chicago, 111.
— Radio Today.

Ultra-sensitive relay

■*■ Microtrol relay with weather-
proof case. Input relay operates on
2 microamperes. Contacts of power
relay will handle 5 amps. AC on
non-inductive circuit. Plug-in type
glass case houses sensitive relay,
power relay, and clock motor. Wes-
ton Electrical Instrument Corp.,
614 Frelinghuysen Ave., Newark,
N. J. — Radio Today.

Radio Today

Fadalette receivers

•k AC-DC table type sets in onyx
and alabaster cabinets. 5F50 series
has a 4-tube T.R.F. chassis with
2-watt output, 4-inch dynamic
speaker. Tunes 545-1650 KC. List
$15.95. Series S5F50 has 5-tube
superhet chassis with 2-watt out-
put. Both sets similar in appear-
ance. List $19.95. Fada Radio &
Electric Co., 30-20 Thomson Ave.,
Long Island City, L I., N, Y.— Radio
Today.

Sound-level meter

• Portable acoustic sound-level
meter for use in making sound
surveys and measurements of levels
in all types of sound installations.
Calibrated from plus 50 to 130 DB
accurate to 1 DB. Self-contained
and battery operated. Model 15 —
net $60. John Meek Instruments,
164 N. May St., Chicago, 111.— Radio
Today.

Frequency meter

* Precision frequency meter and
monitor for checking transmissions
of amateur transmitters. Calibrated
for the 5, 10, 20, 40, 80, 160 meter
bands. 7% -inch dial. Stabilized
electron-coupled oscillator for AC-
DC operation. E. I. Guthman Co.,
402 S. Peoria St., Chicago, 111 —
Radio Today.

150 mil Bantam tubes

* Line of glass bantam tubes
having lowered current drain and
increased filament voltage to avoid
use of line dropping resistor. Tubes
equivalent to standard types except
for filament rating. New types are:
12A8GT, 12F5GT, 12J7GT, 12K7GT,
12Q7GT, 35L6GT, 50L6GT, 25X6GT,
35Z4GT. Hytron Corp., 76 Lafay-
ette St., Salem, Mass. — Radio Today.

Hi-capacity electrolytics

* Low - voltage, high - capacity
dry-electrolytic condensers for use
with A eliminators, and other low-
voltage power supplies requiring
filtering. Housed in round alumi-
num cans. Seven units ranging
from 500 mfd. at 12 volts to 2,000
mfd. at 25 volts. Type HLV. Sprague
Products Co., North Adams, Mass. —
Radio Today.

Prodlight

* Ingenious device designed to
aid servicemen in repair work.
Clamps onto any test prod, to illu-
minate area being tested. Unit is
easily carried in pocket. Furnished
complete with focussing type bulb,
flexible cord, standard flashlight
battery, and switch equipped case.
Priced at 40 cents. Radio City
Products Co., 88 Park Place, New
York, N. Y. — Radio Today.

Meissner receiver kits

* Midget receiver kits for bat-
tery operation using plug-in coils
for tuning to all wavebands. Sets
use 1.4 volt tubes with single 45-volt
B battery and dry cell. 1, 2, and 3
tube models — all built on same chas-
sis, so the 1 and 2-tube sets may be
enlarged to 3 tubes. Complete 3-tube
kit less tubes and batteries — list
$6.25. Meissner Mfg. Co., Mt. Car-
mel, 111. — Radio Today-.

Oscillograph wobbulator

* 3-inch cathode ray oscillo-
graph with electronic frequency
modulator with variable bandwidth.
Wobbulator fundamental frequency
of 1,000 KC. Horizontal and ver-
tical amplifiers. Linear sweep cir-
cuit for waveform observations.
Model 830— net $69J.95. Triumph
Mfg. Co., 4017 W. Lake St., Chicago,
111. — Radio Today.

Precision resistors

* Ceramic-jacketed, fully-sealed
precision resistors. Non-inductively
wound using reversed pie sec-
tions. Resistance values up to 3
megs in V2, 1, ljA, 2-watt ratings.
Standard tolerance of 1 per cent.
Wide variety of terminal styles.
Clarostat Mfg. Co., Inc., 285 N. 6th
St., Brooklyn, N. Y. — Radio Today.

Alligator tip clip

* Clip with phone-tip soldered
to lower jaw. Permits clip connec-
tion or phone tip connection with
single end to test probe. Clip may
be had with rubber insulator. Type
85-T. Mueller Electric Co., 1583 E.
31st St., Cleveland, Ohio.— Radio
Today.

Eicor dynamotor

* DC generator of the dynamo-
tor type for all mobile applications.
Units operate on 6 and 12 volts.
Supply voltages from 200 to 600 at
currents up to 250 mils. Model C20
for 6 volts with filter supplies 150
mils at 350 volts— list $68.50. Eicor,
Inc., 515 S. Laflin St., Chicago, 111.
— Radio Today.

Transmitting inductor

* Hi-Q coil for transmitters
with a rotating coupling coil at the
electrical center. Works into 75
ohm transmission line. Coils are
wound on ribbed ceramic forms and
available for all bands. E. F. John-
son Co., Waseca, Minn. — Radio To-
day.

Field-strength meter

* Meter for measuring field in-
tensity of antennas on frequencies
from 1750 to 60,000 Kc. Uses diode
tube rectifier powered from single
dry cell. Wavechange switch se-
lects 6 bands. Meter indicates rela-
tive field strength. Phone jack for
monitoring. Radio Transceiver
Labs., 8627 115th St., Richmond
Hill, N. Y.— Radio Today.

January, 1939

RCA Victor begins the New Year
with a EflEKSff

.with this great *
new ELECTRIC '
TUNING VALUE...

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RCA presents the "Magic Key" every Sunday,
2 to 3 P. M., E. S. T„ on the NBC Blue Network
'i .o.b. Camden, N. J., subject to change without notice

RCA Manufacturing Co., Inc., Camden, N. J. A Service of the Radio Corporation of America

Only RCA Makes

and Does Everything

in Radio and

IT PAYS TO GO

Because public

acceptance
means bigger

£}

Profit in RCA Victrolas!

With sales of Victor and Bluebird Rec-
ords hitting new peaks each week public
interest in RCA Victrolas mounts at an
accelerated pace. Selling these splendid
instruments is a highly profitable busi-
ness for you— not only because of the
tremendous public interest in recorded
music — but because in RCA Victrolas
people get the styling and the features
they want— at prices, they can afford to
pay! In addition, this merchandise is
backed up by advertising and promo-
tions that bring people into your store
— anxious to buy! Get behind these
outstanding instruments and it will pay
you — well!

RCAVictrola Model U-115— a fine table instru-
ment that plays 10" and 12"records with the lid
closed,provides Feather-touch Crystal Pick-up,
True TracfcingTone Arm, Self-starting constant
speed electric motor, Automatic Stop, RCA
Victor Electric Tuning and «^*"vfkfT*
many other fine features— all at $ l-L \m J*J
the sensationally low price of fJJ 'J '

RCA Victrola Model U-134A — a masterpiece of beauty.
This magnificent instrument enables you to offer the cus-
tomer such outstanding features as High Fidelity, new
Gentle Action Automatic Record Changer for 10" and 12"
records, extended frequency range, Feather-touch Crystal
Pick-up, top needle loading, RCA Victor Electric Tuning,
Electrical Magic Voice, Overseas Dial,
and many others. It's a 16-tube instru- <£ *B "
merit that turns prospects into buyers!

355'

'All prices f.o.b. Camden, N. J., subject to change without notice.

RCAVictrola Model U- 112 — an
outstanding Victrola value! At its
low price of $39-95* you can offer
your prospects this beautiful table
model which plays 10" and 12*
records with the lid closed, has
Feather-touch Crystal Pick-up,True
Tracking Tone Arm, Synchronous
ElectricMotor and g^ ^-w f* r #
powerful super- $ -%v» "*^
heterodyne radio. <t^ J

7?CA l/icZbo&z, I

COMBINES RECORD AND RADIO ENTERTAINMENT

A SERVICE OF THE

RADIO CORPORATION

OF AMERICA

January, 1939

The Record Business is a PROFIT Business-

WHEN YOU SELL VICTOR
and BLUEBIRD RECORDS!

VICTOR BROUGHT RECORDS

BACK-AND THEY'RE

BACK TO STAY!

Back ia 1932 the record business was
virtually "dead." Nearly everyone in
the business had given up on records,
but RCA Victor felt that the record
market of the future was potentially
greater than the record market of the
early 1920's. So RCA Victor insti-
tuted an advertising and publicity
campaign in newspapers, magazines
—and on the radio — to revive the rec-
ord market. The Victor Record So-
ciety was organized.
What has happened is
now history. The rec-
ord business today is
tremeadously ahead of
the record business in
1933 —promises to
grow even greater in
the years to come.

• • •
RCA presents the Magic Key
Sundays, 3to}P.M.,E.S.T.,
on the NBC Blue Network,

THE WORLD'S GREATEST
ARTISTS ARE ON VICTOR
AND BLUEBIRD RECORDS!

Like any other entertainment busi-
ness, the business of selling records
depends to a large extent on WHOM
you have to sell. The public demand
is invariably for recognized stars.
And the world's greatest artists are on
Victor and Bluebird Records. Some
of these include ArturoToscanini, Kir-
sten Flagstad, Richard Crooks, Benny
Goodman, Tommy Dorsey, Eddie
DeLange, Artie Shaw, Dick Todd.

VICTOR BLUEBIRD

POWERFUL ADVERTISING

THAT SELLS FOR YOU
YEAR IN AND YEAR OUT!

Year in and year out RCA Victor
spends huge sums of money promot-
ing the sale of Victor and Bluebird
Records. Powerful magazine and
newspaper campaigns — the famous
Magic Key, on the air every Sunday—
and the amazingly popular Victor
Record programs which are broad-
cast nightly in 17 cities— create new
Victor Record enthusiasts, maintain
the interest of "oldsters"— send them
to your store to buy.
Forceful cooperative
advertising even fur-
ther enhances your
own business.

If you're not in the
record business the
success of Victor and
Bluebird Records
should convince you
that you're missing
something.

VICTOR & BLUEBIRD RECORDS

Victor Division • RCA Mfg. Co., Inc., Camden, N.J. • A Service of Radio Corporation of America

Radio Today

RCA Victor Radio Tubes offer you the

BEST KNOWN NAME and
OLDEST TRADEMARK

in the business!

There is no doubt about the public
acceptance of RCA Victor Radio
Tubes. Millions of dollars have been
spent to popularize and create public
acceptance for products bearing the
RCA Victor Trademark.

That's why there is a tremendous
market for RCA Victor Radio Tubes
— a market which is constantly grow-
ing— a market which is conscious of
the quality that has been built into
products bearing the RCA Victor

rademark. Because of this it will pay

you to keep on hand an adequate stock

hese tubes at all times. See your

RCA Victor Distributor.

RCA presents the Magic Key every Sunday, 2
to 3 P. M... E. S. T.t on the NBC Blue Network.

fifi4 1/tcZot RADIO TUBES

RCA Manufacturing Co., Inc., Camden, N. J. • A Service of the Radio Corp. of America

January, 1939

Successful servicemen stick to test equipment
which measures in fundamental quantities. The
reasons are obvious :

Fundamental test equipment never grows
obsolete . . . eliminates those frequent, costly
equipment replacements due to circuit
changes. The pointer on a good instrument
tells, exactly, the true condition in the circuit
under test . . . leaving nothing to chance or
guesswork. In addition, it's simple for any
serviceman to check a fundamental instru-
ment for accuracy.

Remember, when buying your next equipment,
that all Weston test units measure in radio
fundamentals. That's why Weston radio in-
struments remain serviceable for years . . .
never discarded, never idle, because of changes
in receiver circuits. Remember, too, that Wes-
ton instruments are used by practically all
leading manufacturers because of their greater
dependability . . . greater economy. This name
also is youf best assurance of dependability
and satisfaction in radio test instruments. The
coupon will bring you complete data.

Weston

Radio Instruments

WESTON ELECTRICAL INSTRUMENT CORPORATION
581 Frelinghuyaen Avenue, Newark, N. J.

Send full information on Weston fundamental test instruments and
Weston tube checkers.

Name _

Address

City State

Weston Model 669 Vacuum Tube Voltmeter.
Direct reading, measures gain per stage— r.f.
amplitude in oscillator circuit of supcrhets—
all test on AVC circuits, PA systems, and all
measurements where high frequency is a factor.

WESTON 773 "quick-test'
Tube Seller

Like Weston fundamental
instruments, this attractive
counter tube checker has been
designed for speed, simplicity
and dependability. Minimum
number of proved switches
assures long, trouble-free
operation. Rotator tube chart
simplifies test procedure.
Makes all tests on all tubes.
Impressive looking, in pol-
ished wood case. Also avail-
able in portable carrying case.

Radio Today

MORE PROFITS IN SERVICING

Radio Today conducts first nation-wide survey
of repair costs and profits.

To help radio servicemen operate
their businesses on a paying basis
and increase the net profits, Radio
Today is making the first survey of
service operating costs and income
ever undertaken on a national basis.

The questionnaire shown below is
a sample of that being mailed to
servicemen everywhere. The form
is based upon the ideas of many lead-
ing men in the service industry. And

those servicemen who have not previ-
ously requested a questionnaire may
send the coupon at the bottom of this
page to Radio Today.

While the listings may seem rather
involved, it was decided that all the
items should be included so that each
participant in the survey would be
sure of including all the necessary
data.

From the information received,

Radio Today will compile averages of
expenses and profits, operating costs
per hour and per service call. These
figures will be announced in future
issues, together with suggestions on
how to overcome weaknesses. In
addition to averages, we shall show
the extremes, so that each service-
man can see how his own costs and
profits compare with others.

Each serviceman sending in a com-
pletely filled in questionnaire will re-
ceive an individual analysis of his
own figures.

The figures shown for a sample
shop are those for a one-man shop
operating in a New England city.

For a detailed analysis of your
own operating figures, be sure to
participate in Radio Today's survey
of operating expenses and profits.

RADIO TODAY'S SURVEY OF RADIO REPAIR COSTS AND PROFITS

(Confidential — will be used only for compilation of averages)

Do you sell sets, appliances, etc.? Yes No

If so, what per cent of your business do these sales represent? %

If you are a dealer, is your service department operated for a profit or as a convenience in conducting your sales? Profit Convenience

How long have you been in the radio service business? Years

If you have any business other than radio service, charge only the proper percentage of the costs to the service department. (Example: If the service
department consumes half of your electricity, then charge only half of your electric bill in the space provided below)

OPERATING EXPENSES FOR ONE YEAR PERIOD

Sample
Item shop

1. Rent (yearly) $120

2. Telephone (yearly) 24

3. Electricity and gas (yearly) 36

4. Heat, if not included in rent

5. Car depreciation for year ISO

6. Garage rent (yearly) 15

7. Gasoline and oil 60

8. Car repairs 35

9. Tires for car 10

1 0. Auto license 3

11. Auto insurance (Pub. liabil., etc.) 44

1 2. Workmen's compensation

13. Social security, unemployment insurance

14. Advertising expenses incl. postage 50

Your
figures

(Chargeable to service shop)

Sample
Item shop

15. Depreciation of store fixtures if owned by you
(lamps, signs, etc.) $ 6

16. Delivery and shipping charges (express, parcel
post, etc.) 36

17. Salary of office help

18. Cost of service manuals, books, magazines 20

19. Depreciation of service equipment (25% of cost) . 125

20. Tools and shop supplies 5

21. Bad debts 20

22. Other expenses 10

Your
figures

TOTAL ANNUAL EXPENSES $769

WAGES PAID

23. Non-technical wages (helper, chauffeurs for servicemen, etc.)

24. Salesmen's wages and commissions, if any (for service department only) .

25. Technical wages (servicemen and technicians only, do not include owner)
State number of servicemen employed.

26. Owner's salary (state nature of owner's duties so that we can properly classify this item) $1927

Duties

HOURS WORKED AND HOURS SOLD

27. Total number of hours worked per week by all servicemen including owner solely for service 54 hrs.

28. Percentage of servicemen's time chargeable to customer for work performed 25%

(This is your productive time, or time sold to customer)

INCOME FROM CUSTOMERS

Sample
Item shop

29. Dollars paid by customers for tubes (yearly) . . . .$ 600

30. Dollars paid by customers for parts, antennas. . 516

31. Dollars paid by customers for labor 2,092

32. Income from set dept. for "free servicing" and
installation of sets sold $

33. Approximate no. of calls made, for which you
were paid (omit free repeat calls) 700

Your
figures

TOTAL INCOME FROM CUSTOMERS $3,208 $-

COST OF TUBES AND PARTS

Sample
Item shop

34. Net value of new tubes in stock at beginning

of year $145

35. Net value of new tubes in stock at end of year.. 145

36. Net value of tubes purchased during year 244

37. Net value of new parts in stock at beginning of
year 363

38. Net value of new parts in stock at end of year. . . 415

39. Net value of parts purchased during year 293

hrs.

Your

figures

This information will be treated with utmost confidence — you will not
be identified with the figures in any manner. These figures will be used
to compile average figures for the radio service industry.

MAIL IT NOW

VINTON K. ULRICH, Service Editor, Radio Today,
480 Lexington Ave., New York, N. Y.
I wish to participate in Radio Today's survey of costs and
profits in radio servicing. Please send me a questionnaire
so that I may send you figures pertaining to my costs.

Name Co

St. and No City State

FOUR BILLIONS TO GO!

That's the market for electrical appliances
and smart radio men are getting some of it

FOR WINTER SUN TAN

HAPPY DAYS AHEAD

Radio dealers looking for other
lines to augment the sale of receivers
can take heart. According to the .Na-
tional Electrical Manufacturers
Assn., there is a four-billion-dollar
potential market for electrical ap-
pliances.

So far the surface has been only
scratched. Vacuum cleaners, refrig-
erators, waffle irons, toasters, clothes
washers, etc., etc., still have a fertile
field, says NEMA.

Basing their figures on a U. S.
yearly income of $59,000,000,000— ac-
tually, it is more than that, the ap-
pliance men flash "go" signals for
dealers everywhere.

193S REFRIGERATORS AIMED
AT LOW-WAGE GROUPS

No gadgets, but good solid improve-
ments are contained in the 1939 re-
frigerators released in the past several
weeks by nine manufacturers, Cros-
ley, General Electric, Gibson, Hot-
point, Kelvinator, Norge, Stewart-
Warner, Westinghouse, Universal
Cooler, Frigidaire.

' 5 f '^Si

is y

New features to be ballyhooed in-
clude increased-point temperature
control, sterile lamp, lighted dials,
added space for bottles and ice cubes,
better sealed units, speedier freezing,
improved cabinet construction, more
pottery, more efficient meat con-
servers and light-touch latches.

In 1939, the merchandising accent
will be placed on the lower-income
group, a practically virgin field for
sales. Since NEMA has set a pos-
sible market of 8,458,000 units for re-

SILVER JUBILEE "BOX"

Via radio, Westinghouse's Ruth La
Verne peps up interest in kitchen ap-
pliances.

Marking its 25th refrigerator
year, Kelvinator emerges with
this new, improved streamliner
which features an inclosed,
bother-less unit.

frigerators, dealers are sharpening
pencils to figure 1939 deals.

Points for the dealer to remember
are: 1. Almost half of the better
homes have refrigerators four years
or more old. 2. Therefore promote
replacement sales in this bracket,
stressing new features. 3. About TO
per cent of the incomes are less than
$3,000 a year. 4. Thus, hit this group
for new sales.

PHILCO'S 1939 "BOXES"
TO BE READY SOON

Philco soon will be ready with its
1939 line of Conservador refrigerators,
Vice-President Sayre M. Ramsdell an-
nounces. Promotion plans, based on a
survey of the refrigerator market, are
now being prepared, and are to be re-
leased shortly.

"We feel assured the Conservador
is a product that will contribute a

Since most folk can't fly South
with the birds, G-E has brought
out this new ultra-violet lamp
with automatic timer to provide
that smart bronze.

great deal to the refrigeration indus-
try," says Ramsdell. "We also feel
assured it will meet with wide public
favor."

Philco also will continue its air con-
ditioning business, begun last year.
Since only 31 per cent of installations
were personal, while 65 per cent were
commercial and industrial, Mr. Rams-
dell believes a great future for sales
lies in the home field. Philco's port-
able unit is expressly designed for such
use.

FRIGIDAIRE SHOW TELLS
STORY OF NEW MODELS

To ballyhoo its 1939 models, Frigid-
aire has three sales crews on the road
demonstrating to dealers and salesmen
all over the country how to sell the new
products.

The latest thing in theatrical equip-
ment is being carried by these crews
who will be on the road for four weeks,
visiting 20,000 Frigidaire representa-
tives. Secret rehearsals of the demon-
strators have been held for weeks.

Thirty-nine men, headed by Lee A.
Clark, H. J. Walker, Jr., and Elsworth
Gilbert, will visit 33 cities to give their
"Performances."

SPECIFY INTERFERENCE-LESS
APPLIANCES

"It is not enough to call upon the
owner of a radio set to eliminate inter-
ference which may be caused, but
rather must we educate the public to
purchase electrical devices which cause
no interference," comments Arthur
Moss of Solar Manufacturing Corpora-
tion, New York. "The manufacturer of
equipment which causes interference
should take steps to eliminate such in-
terference before the appliance is sold.
Already there is a growing tendency on
the part of manufacturers to take the
necessary steps. With the advent of
television this will become more and
more important."

Radio Today

IMPROVED DESIGN 1
PROVIDES 20%
EXTRA SPACE

New, Streamlined 6 cu. ft. 1
Gale requires no more 1
kitchen space than con- 1
ventional 5 cu. ft. model 1 1

\sf

ft\

*!>

Lo°k to

<f°rn

the J"* *«£. «o|e
d«Y's £ ***** ♦ }

*nS ***** ?**•».

"'"e'hiv* Se// of

GflLG PRODUCTS

OUTBOARD, Marine & Manufacturing Company —
builders of Johnson Sea-Horses, Evinrude and Elto
Outboard Motors, Iron Horse Generators, announce a sep-
arate division for Gale Electric Refrigerators (formerly
Briggs) and Gale Space Coolers (formerly Johnson).
Increased plant facilities and personnel, necessary to meet
the growing demand for these quality appliances, have
been provided at Galesburg.
The development of this Division is another step in the

parent Company's long range program to make GALE
PRODUCTS a great factor in refrigeration.

UNUSUAL DEALER OPPORTUNITY

Seven years successful operation in refrigeration have
proved the soundness of the Company's policy of building
high grade products and marketing them through chan-
nels that permit moderate resale prices, with big volume
for dealers. Write for full details. Dealer territories open.

FEATURING

A GREAT NE W
DEVELOPMENT

GALE PRODUCTS presents an entirely new line for '39. New beauty through-
out! New "streamlined" design for extra capacity! And featuring the new
Sealed Evaporator! This remarkable development (exclusive with Gale) seals
the ice compartment from food odors, makes for utmost sanitation, prevents
sticking of trays, induces freer circulation with proper food temperature, while
preserving lower temperature within the freezing compartment. This lower
temperature is so effectively maintained that ice does not melt away when coils
are defrosted! . . Porcelain enamel housing, with glass door and chromium trim
have great eye appeal, while actual demonstration has powerful sales appeal!

GALE PRODUCTS, 800 MONMOUTH BLVD., GALESBURG, ILLINOIS

January, 1939

PRACTICAL DYNATESTING OF SETS

Case histories of how service problems were
rapidly solved using dynamic testing procedure

By Vinton K. Ulrich, Service Editor
This twelfth installment of the dy-
namic servicing procedure is to show
the radio man how the method may be
used for every-day radio repair work.
Typical examples illustrate that dyna-
testing is a simple and most logical
method of analysis.

In the articles appearing in Radio
Today for the past year, much em-
phasis has been placed on dynamic
rather than static tests. The latter
type of analysis should not be over-
looked by the practical radio man, for
in many instances it is an essential
test. However, it is the writer's view-
point that dynamic tests should al-
ways be made first, for if the dynamic
conditions are proper, the static con-
ditions are satisfactory — and the re-
verse is not true. Thus, with a single
dynamic test it is possible to check
both the static and dynamic condi-
tions— if either one or the other con-
dition is not proper, it will be shown
up by a dynamic analysis of the stage
or stages under consideration.

Stage-gain requirements

The readers who have been follow-
ing Radio Today have by this time dis-
covered that Dynamic Testing is not
just a measurement or indication of
stage gain, but a method for testing
many of the individual circuit com-
ponents and circuit conditions within
a stage.

In order to avoid the necessity of
taking actual stage gain measure-
ments the test procedure starts at the
loudspeaker and works toward the an-
tenna. The only gain or amplifica-
tion requirement for a stage is, that
the stage will drive the following one
to its proper level or output. This
idea is in keeping with the design
practice of many engineers. For in-
stance, the radio set engineer decides
a set must deliver 5 watts output. Re-
quirement is that the output tubes de-

liver the power and the speaker handle
the output. Suitable output tubes are
then chosen. Next step is to drive
the output tubes to full capacity. This
means that the driver tube must be
capable of supplying the necessary sig-
nal voltage without distortion. And
likewise, the previous stage must be
capable of supplying the driver tube
with sufficient signal voltage or ex-
citation.

If the driver stage can deliver the
required sock and each preceding stage
enough signal voltage to properly
drive the next one, then the stages
have sufficient gain or amplification.
In dynamic testing as developed by the
writer, this principle is basic. As long
as sufficient gain is present, it does
not matter what the actual value of
the gain is — and because of this rela-
tionship it is possible to neglect actual
values of gain with dynamic testing.
As described in previous articles, it is
necessary to move the signal generator
from stage to stage in order to ac-
complish the desired results. Move-
ment of the signal generator from
stage to stage has the additional ad-
vantage that signal voltage measure-
ments in critical circuits are unneces-
sary— thus simplifying the tests.

Receiver dead

The first receiver difficulty to be dis-
cussed is that of a set that was dead.
Set was inoperative — all tubes tested
okay. Signal generator (audio) was
connected to grid of output tube — no
signal. Next connection made to voice
coil, which showed speaker was opera-
tive. Finally the audio oscillator was
connected to the primary of the out-
put transformer as shown in Fig. 1-A
— signal was still present. Obvious
conclusion was that the output stage
was dead. Voltages of output stage
were checked — none was present. Since
the field was used for a filter choke
and it was properly excited, it seemed

Fig. 1 — In circuit A the audio oscillator was connected to the primary of output
transformer and resultant signal showed speaker to be okay, yet output stage was
dead — fault was shorted filter. In B an intermittent coupling condenser was dis-
covered by moving the oscillator from one terminal of condenser to other.

that the B plus might have been
shorted. Actual inspection showed the
second filter condenser to be shorted.
Time consumed for the analysis was
but two minutes. Static tests would
have provided the same conclusion,
but it is not likely that the service-
man would have started at the defec-
tive stage. With six tubes in the set,
the chances are only one in six that
the voltages or resistances of output
stage would have been tested first.

Intermittent receiver

Case two is that of a set which oper-
ated intermittently. The volume would
suddenly decrease after several min-
utes operation — turning lights on and
off in house would bring it back to
normal sometimes. Set had stumped
several servicemen and manufacturer's
jobber. First step was to connect
audio oscillator to grid of output tube
as shown in Fig. 1-B — no intermittents
were noticed after quite a few minutes'
operations. Next the oscillator was
connected to the plate of the first audio
tube. After a few minutes the de-
crease in volume occurred — symptoms
same as those reported by owner.
Coupling condenser was suspected as
the cause — unit replaced and set per-
formed okay. Condenser later checked
on a standard condenser tester which
showed unit to have no defects. How-
ever, replacement of condenser, addi-
tional tests showed, was the proper
cure, which indicated that it was one
of those rare cases where a defective
condenser tests okay.

The third example was also an inter-
mittent— but different from the usual
type. Set would sometimes operate
properly for a week and then go
mushy. Because of the rare occurrence
of distortion, it was decided to try
using an autotransformer with an
over-voltage to hasten the phenom-
enon. This time luck was present.
After about 3 minutes' operation with
a line voltage of 122 the set went
mushy. With the set in a continuous
state of distorted reception (Fig. 2
shows wave form), the tests were
handled in the usual manner. The out-
put was undistorted when the oscilla-
tor was directly connected from grid
of output stage to ground. Circuit of
set shown in Fig. 3-A. Output became
distorted when oscillator was con-
nected to plate of first audio tube. The
ear was used to determine the pres-
ence of distortion and the scope used
for a visual record.

Next the coupling condenser was
checked for leakage — none was pres-
ent. Grid resistor was of proper value.
Lowering value of grid resistor re-
duced distortion but also decreased
gain. Even though the tube tested
okay, it was replaced with a new one.
New tube gave perfect results under
all line voltage conditions. Later tests
with the old tube showed grid was as-

Radio Today

Fig. 2 — Top waveform shows receiver
capability before distortion occurs.
Lower wave pictures output during in-
termittent distortion condition.

suming positive value when line volt-
age increased — no usual tube checker
would show up this condition, how-
' ever. This particular set was "ser-
viced" and pronounced perfect by a
N. Y. dealer, before being brought to
Radio Today's Laboratory, because of
its extremely unusual type of inter-
mittent distortion.

Case four involves a $10 midget
(AC-DC) that was dead. In order to
first check the speaker the signal gen-
erator was connected across the voice
coil, and it was determined that the
speaker and its excitation were satis-
factory. Next check was to connect
audio oscillator to primary of output
transformer as shown in Fig. 3-B—
result: no signal. This indicated the
transformer was defective. A resist-
ance measurement showed the pri-
mary to be open. Replacement of the
output transformer effected a repair.
Again this is a condition that could
be discovered using static methods.
But as in case one, the odds are
against the serviceman — for it is likely
that the numerous static tests will be
made before making the one which
shows up the defect.

Tinny sounding set

Fig. 3-C shows the circuit of a set
that sounded tinny from the time the
owner purchased it. Problem was to
improve the tone. When tuned to a
station, it seemed that the set lacked

in bass response. An overall variable
audio frequency test was made that
showed the bass response fell off badly.
Since it seemed that possibly the grid
coupling condenser was too small, it was
tested by connecting the oscillator first
to the plate of the first audio tube and
then to the grid of the output tube.
There was no change in response at
the bass, which showed the grid
coupling condenser was okay. Since
there was no cathode resistor, fixed
bias being used, degeneration could
not be taking place due to too small
a cathode bypass.

Next step was to try an additional
.01 condenser across the output trans-
former, in the belief that the one used
might be open. Result was that the
frequencies above 6000 cycles were at-
tenuated, giving a pronounced peak
from 3500 to 6000 cycles in the re-
sponse. Since this seemed to help,
various values of capacitance were
used. The .05 condenser shown con-
nected in the circuit by dotted lines,
reduced the high frequency peak so
that response was essentially flat from
200 cycles up to 4000 cycles.

With such a response the set sound-
ed very well. The tonal response was
very well balanced for a table type set.
Owner was very pleased with results.

Again a true dynamic test was of ex-
treme value. Without a variable fre-
quency audio oscillator, it would have
been difficult to place one's hands on
the source of trouble. Quite a bit of
experimenting while listening to a
broadcast signal might have been re-
quired.

The examples given are but a few
of those that might be listed. From
actual servicing experience, it is the
writer's firm belief that if dynamic
testing is used, it will save much time
and increase the serviceman's profits.

HOW PROPERLY TO INSTALL
A REPLACEMENT CONE

The dynamic speaker has for a
number of years been a service prob-
lem with which the average service
shop has avoided rather than contend
with the uncertainties of centering,
cleaning, etc., states Carron Mfg. Co.'s
engineering department. The fact that
there has been so much mystery about
speaker repairs, plus the general lack

of repair parts has resulted in lost
profits and. dissatisfied customers.

Cone diaphragms used either in
dynamic or magnetic speakers, have
been made of either fabric or paper.
Humid weather invariably will dry
out or stiffen the cone to the point,
where all its resiliency is lost, and
when the resiliency is gone, it loses its
flexibility and causes a considerable
amount of noises such as rattles, etc.
No cone diaphragm can be efficient
indefinitely. Adverse conditions such
as unusual dust or moisture may
seriously affect the operation of a cone
in less than a year making replace-
ment a necessity for proper results.

New cones are not expensive in the
light of the customers reaction to the
noticeable improvement. Speaker en-
gineers strive to develop a perfectly
balanced speaker, balanced as to the
weight of the cone, the impedance of
the voice coil, and resistance of the
field.

When checking a customer's set Car-
ron strongly urges that the serviceman
check the operation of the speaker.
The quickest, cheapest and best meth-
od for determining rubs, scrapes, etc.,
is available right in the receiver
chassis. Most speakers have a voice
coil impedance low enough to give a
satisfactory signal when the filament
or heater voltage is applied directly to
it. The resulting 60 cycle hum should
be absolutely pure, no higher fre-
quencies appearing. Speaker center-
ing is simplified since the results are
immediately noticeable.

Our experience has shown us that
there is only one way to properly in-
stall a cone, say Carron's engineers.

First: Remove old cone and voice
coil.

Second: Clean pole piece thoroughly,
using a small hand pump. An excel-
lent suggestion for removing obstinate
(Continued on page 40)

In performing the work for dynamic
testing, service equipment made by the
following manufacturers is being used
in RADIO TODAY'S laboratory: Wes-
ton Electrical Instrument Corp., United
Transformer Corp., Supreme Instru-
ments Corp., RCA Mfg. Co., Monarch
Mfg. Co., International Resistance Co.,
Hickok Electrical Instrument Corp.,
Aerovox Corp. The editors wish to
thank these companies for their co-
operation in helping further dynamic
testing.

Fig. 3— For circuit A the intermittent distor-
tion pictured in Fig. 2 was made continuous
by stepping up the primary voltage with an
auto transformer.

Circuit B shows simple con-
nections required to find
open primary in output.

Poor tone quality in C was traced to insufficient
capacity across the primary of the output trans-
former. Difficulty rapidly located with use of
variable frequency audio oscillator.

January, 1939

SERVICING FOR PROFITS

(Continued from page 35)
filings is to use a piece of ordinary ad-
hesive or scotch electrical tape which
may be pushed into the gap with a
piece of wire or centering shim.

Third: The correct position is such
that the voice coil extends an equal
amount on either side of the upper
pole piece. This may be determined
by eye since this may be done with
sufficient accuracy.

Fourth: If a spacing ring is neces-
sary it should be cemented to the
speaker first applying a coat of radio
cement to both surfaces. The upper
spacing ring may be applied at this
time.

Fifth: After the cement has set,
speaker centering shims should be used
to properly center the voice coil.
While cementing (step four) the voice
coil is centered by eye.

Sixth: Tighten spider center screw
if the cone is of the type in which the
spider is held by one or more screws.

Seventh: Remove centering shims.

Eighth: Feed a sine wave 60 cycle
signal to the voice coil as mentioned
before. The output should be absolute-
ly free from frequencies other than
the fundamental and the power line
frequencies are an exceptionally good
source.

P.M. dynamics

P. M. dynamic speakers require spe-
cial care in removing any particles of
magnetic material from the gap, as in
step two above. It is inadvisable to
disassemble' the speaker since the
magnet will lose some of its magne-
tism in most cases. Speakers which
are badly rusted from out-door opera-
tion should be cleaned and remag-
netized. Most P. M. speakers made
today have an enclosed voice coil as-
sembly. A paper spider having con-
centric corrugations is cemented to a
ring and this must be done at the
same time as the rim of the cone is

cemented to the speaker. In some
cases an inside spider is found on the
original speaker. These cones are sup-
plied with an extra spider which re-
places the original. It is important
that in cases such as these the speaker
centering shims must be put in position
while cementing in order to properly
position the spider. Ample cement
should be used to insure a good bond.
After testing, the dust button or felt
dust cover may be cemented in place.

WORDS OF SERVICE MEN
HAVE DRAG

When a service man is called upon
to repair a recently-purchased receiver,
it is a foolish idea to make any kind
of an unfavorable remark about it, to
the owner. This is an important as-
pect of business procedure, according
to Charles Golenpaul of Aerovox, who
brought up the matter at a recent RSA
meeting.

It is well for the service man to re-
member the endless time, effort and
money required of the set manufac-
turer before the receiver finally
reached the consumer. The fact that
the instrument requires fixing is bad
enough, without the radio man imply-
ing that the buyer is stuck with shoddy
merchandise. It is much better tactics
to compliment the customer on his
choice.

Service men are likely to make sour
cracks about receivers because they
want to appear to be expert, because
they are sore at some particular set
manufacturer, or because they are just
careless. But every time they open
their mouths in this vein, thousands
of dollars worth of radio promotion is
abruptly cancelled.

The Voder shown in operation actually
creates its own speech.

MACHINE CREATES TALK

Newest development from the Bell
Telephone Labs is the Voder, an elec-
tronic device which can talk in under-
standable English, French, German,
etc. The device does, however, have a
slight electrical accent.

Unlike previous devices, the Voder
pictured herewith actually creates
sound just as the human vocal chords
do. The synthesis of speech and other
sounds is controlled by the extremely
rapid fingering of 23 keys. A foot con-
trol gives inflection to the sound.

Basically the device consists of a
continuous tone generator (saw-tooth
oscillator) and a hiss generator to-
gether with numerous band pass fil-
ters. From the two basic sounds and
proper use of the filters (selected by
the operator at the keyboard), it is
possible to construct any sound. The
inflection control changes the pitch

Neat and convenient service bench of Radio Sound Service Engineering Co. in Washington, D. C. Note that use of sloping
panel and shelf keeps most of the test equipment off the bench, thereby stepping up efficiency.

Radio Today

slightly, thereby giving expression to
the speech. The sounds created elec-
trically are reproduced over a sound
system.

While the Voder was built primarily
as a demonstration device for the Gol-
den Gate Exposition and N. Y. Worlds
Fair, it may have practical uses in
providing sound effects. The imita-
tion of a train and the bellowing of a
calf are but two of its unlimited sound
possibilities.

To the radioman this invention
should be most significant, for it shows
that not only can man reproduce ac-
tual sounds, but also that man can ar-
tificially create them. As some see it,
the Voder foreshadows many of the
future possibilities of (radio) tube
operated devices.

TEMPERATURE VERSUS RESISTOR
SIZE AND MOUNTING

The determination of the physical
dimensions of a resistor to fit a parti-
cular application ordinarily involves
the consideration of three factors:
wattage to be dissipated, maximum
temperature allowable, and mounting
conditions; plus the consideration of
certain graphical data, states the en-
gineering department of Ohmite Mfg.
Co. The actual wattage to be dissipated
in the resistor is first calculated by
means of any of the variations of
Ohm's Law such as, Watts =z I2R,
where I is the current in amperes and
R the resistance in ohms.

Next, the maximum temperature
which the resistor can be allowed to
attain is stipulated. This temperature
is generally below the maximum (450°
F. above the ambient or room tempera-
ture) which is allowed by the N. E.
M. A. standards for vitreous enameled
resistors. The presence of other nearby
equipment often necessitates much
lower temperatures.

j APPROXIMATE TEMPERATURE
RISE OF VITREOUS ENAMELED

^RESISTORS VERSUS CORE
WATT RATING (SIZE)

IS*1?/ J

00 —

— TSL"

0 2',
MULTIPLY ACTUAL WATTS BY ABOVE
NUMBERS TO OBTAIN NOMINAL CORE
WATT RATING.

The third step is to consider the
mounting conditions of the resistor, i.e.,
whether the unit is mounted in free
air (the basis of the nominal resistor
rating) or mounted enclosed so that
air circulation is restricted.

A reference to the graph illustrated
herewith will now tie these three fac-
tors together with the graphical data
(based on observations of typical re-

QetThii 80-P<Lqe£o*k

Tells Everything About True Dynamic Testing

Ordinarily when you buy a piece of test
equipment you use it for months before
you know what it will do for you. This
means you must first make the invest-
ment BEFORE you find out if it is profit-
able. But not so with the Rider Chana-
lystl We want you to know exactly
what this instrument can do for you and
how you operate it. We want you to be
sure it's a good investment — BEFORE
you buy it. So. we have prepared an
80-page (8V2"x 11") book, loaded it with
illustrations and written it so you can
understand ALL about the Rider Chana-

You Don't Need An Expert

to demonstrate this easy - to - operate,
trouble-shooting instrument. Read this
book — go to your Jobbers and

lyst and true dynamic and functional
testing the first time you read it. This
book with hard covers would ordinarily
sell for $2.50. We will mail it to you for
25 cents in stamps or coin — a fraction of
its preparation cost. We do this for we
believe a serviceman should have the
real facts on what he can expect of an
instrument BEFORE he buys it. We
know you will want a Chanalyst after
you read this book. Send for it today)

Mail

only

4>0 FoJy^^s

*o\v,

Demonstrate It to Yourself / 5sjr?*«i*i*^

coioj

Y°rk

City

The HIDER __

Chanalyst

SERVICE INSTRUMENTS, Inc. 404 Fourth Ave ., New York City

January, 1939

give* tfou

HIGH OR LOW PITCH

WITH THE SAME MICROPHONE

With the flip of a finger you can now(l)lower
or raise the response of the microphone. . . (Z)
adjust the microphone for most desirable re-
sponse for close talking or distant pickup. . .
(31 adjust the system to any "taste", room con-
dition, or equipment.

MODELS RBHk, BBMk, with Acoustic Compen-
sator.irequency range. 40 to 11000 cps, output,
-65 db., complete with switch, cable connector*
and 25' of cable $42.00 LIST

NEW! MODEL RSHk (hi-imp); HBSk
(200 ohms) Frequency range 60 to 8000
C.P.S. Output -68db. . . . Chrome or Gun-
metal ......... ...... .$32.00 LIST

NEW LOW-PRICED CONTACT "MIKE"

$12.00 LIST

The new popular-priced Amperite Contact Mi-
crophone can be used on most radio sets made
since 1935 and on all P.A. systems. It "makes
an ordinary violin sound like a Strad" . . . gives
a small piano the tone of a Grand. And yet,
there is no distortion. No unnafuraf ettects. No
"fingering noises." TVo changes in strings or
instrument. Attached without tools.
Operates with either high or low gain ampli-
fiers. Has frequency response of 40 to 9000 cps.
Output, -40 db. 20' of cable.
MODEL SKH (Hi-imp); SKL (200 ohms),

$12.00 LIST
Professional Model KTH (or KTL). .$22.00 LIST

^NEW COMPACT "MIKE"

A new velocity microphone of com-
pact size, having a head only l'<i"x
23/s"xl%." Good for speech and
music. May be used as hand mike as
well as for stand mounting. Complete
with output transformer, cable con-
nector and switch. Output, -70 db.
into open line. Frequency response
60 to 7500 cycles.
MODEL ACH (Hi-imp.); ACL
(200 ohms) $25.00 LIST

MODEL RAH.. .$22.00 LIST

PJL Men, you can improve those
"price" jobs by using the popular
Amperite Model RAH (or HAL).
You will get better results be-
cause (1) it is excellent for both
speech and music; (2) has flat re-
sponse without undesirable
peaks; (3) reduces feedback; (4)
stands up under rough handling
and changes in temperature,
pressure or humidity. . . . Fre-
quency range 60 to 7500 cps. Out-
put, -68 db.
MODEL RAH (Hi-imp); with

12' of cable; RAL (200

ohms) with 8' of cable,

ONLY $22.00 LIST

Write for Complete Illustrated Bulletins and
Valuable Sales Helps.

561 BROADWAY N. Y
Cable Address: Alkem. New 1

MICROPHONE

Amperite (o.

SERVICING

sistors) so that the approximate re-
sistor size can be determined. For
example, let us assume a case where
the actual resistor watts is 10 and
the maximum temperature attained is
to be 310° F. Subtracting an assumed
ambient (room) temperature of 70°
F., the temperature rise is 240° F.
Assuming the resistor to be mounted
in free air, the intersection of a hori-
zontal line at 240° F., and the "IN
FREE AIR" curve occurs opposite a
multiplying factor of 2.5. Hence, a
resistor of 2.5 x 10 watts or 25 watts
rating is required. This happens to be
a stock size and the dimensions of the
core are %6" x 2", for this example.

Enclosing a resistor so that the air
circulation is restricted raises the tem-
perature for a given watt load
markedly. The exact amount depends
upon the shape, size, surface, color,
etc. of the enclosure. The graph is
for a typical condition. Note that for
the same 10 watt load, and 240° F.
temperature rise as before, a %6" x 4",
50 watt rating, resistor is required
when enclosed instead of the 25 watt
size for free air. For equal tempera-
tures, an enclosed resistor must or-
dinarily be at least twice as large as
when operated in free air.

HOW BEAMASCOPE OPERATES

The Beam-A-Scope is a shielded loop
antenna designed for noise reduction.
This is accomplished in three ways.
In the first place, the well-known di-
rectivity of the loop is used, the loop
being rotated so that the principal
source of noise is in the direction of
zero response of the loop. In the sec-
ond place, the shield around the loop
removes its capacity to ground (See
Fig. 1), so that noise, which would
otherwise be picked up in the ground
return path, is eliminated. In the
third place, the shield, by eliminating
electrostatic pickup, makes the loop
insensitive to the strong electrostatic
field which is present around all noise
sources of the dipole radiator type.

The electrostatic shield around a

loop in a Beam-A-Scope is cylindrical
in form, the ends being two metal
discs, and the side consisting of a
woven material in which the vertical
threads are metallic. All the vertical
threads make contact with the top
disc, but only one makes contact with
the bottom disc. In this way there are
no closed conducting circuits parallel
to the loop, so that the Q of the loop
is not damaged and the magnetic
pickup of signals is still possible.

Ordinarily the sensitivity of a loop
would be small, but in the case of the
Beam-A-Scope the sensitivity of a nor-
mal indoor antenna is retained, be-
cause the loop is tuned and has a high
Q. Since the loop size is determined
in the design of the receiver, the con-
denser which tunes it can be ganged
with the condensers of the RF and os-
cillator circuits.

Besides the noise reduction obtain-
able with a Beam-A-Scope, there is
also the additional, very practical ad-
vantage that no external antenna or
ground connection is required.

ADAPTING TRIUMPH TESTERS
FOR SINGLE-ENDED TUBES

To accommodate the new 6sQ7
tubes, all Triumph Model 420 and
Model 430 Tube Testers should have
the following additions made in their
wiring: Terminal No. 1 of the spe-
cial octal socket should be connected
to terminal No. 1 of the standard octal
socket, and terminal No. 2 of the spe-
cial socket should be connected to
terminal No. 8 of the regular octal
socket. This additional wiring brings
these testers strictly up-to-date. Model
430 with serial numbers above 1056
are factory wired to accommodate the
6SQ7 tubes. New tube index charts
are available.

PORTABLE SERVICE LAB

Exceptional ingenuity and craftsman-
ship, as well as utility, are incorporat-
ed in a novel rolling Radio-X-Ray Ser-
vice Lab. constructed by Ernest Moore,
a leading radio technician who ope-
rates his own modern service shop at
Chickasha, Oklahoma.

In order to impress both his cus-

•--©--

STRAIGHT WIRE ANTENNA

NO PATH TO
ANTENNA FOR

_ _TNQ1SE^

BEAM-ASCOPE

By electro-statically shielding the loop in the G-E beamascope receiver,
local noise pick-up is eliminated because there is no noise path to the

antenna.

Radio Today

RADIO TODAY— and Tomorrow

Ike ib\a
Double @ssue

WORLD'S FAIR and
DIRECTORY NUMBER

Thatch /939

• Dramatizing radio today and tomorrow in special editorial features
and institutional advertisements.

• Marking radio's new milestone, Television, and important trends in
radio and sound.

• Combining the Radio Trade Directory and World's Fair Number
in one big Double Issue with world-wide interest and year-round life.

• Sensing the business impetus of two world's fairs simultaneously.

• Conditioning the trade for a new and lively selling season.

• Arousing all radio men to a new realization of opportunity and
optimism.

• Blanketing ALL radio markets with regular and extra circulation,
including 25,000 dealers and service dealers.

• Rendering a notable merchandising service at no increase in adver-
tising rates.

The big March Double Issue will be the time and place for inserts,
spreads and color advertisements showing the achievements of
individual companies, their records of development, engineering
advances, merchandising policies, strong personalities, etc. — facts
seldom covered by field salesmen but which nevertheless enable
the dealer to make a wiser choice of products or do a better job.

.Because of the special makeup of the
March issue, advertisers are urged to make
reservations at the earliest possible moment.

WORLD'S FAIR Number of RADIO TODAY Combined with RADIO TRADE DIRECTORY

SERVICE NOTES

tomers with the completeness and
modernity of his service equipment
and to make it freely available at a
number of bench positions in his shop,
Moore has installed his major service
instruments in a roller-mounted cab-
inet of eye-arresting design and pro-
portions.

The advertising that his customers
have given him, as well as time saved
through bringing his laboratory to the
work as needed, instead of vice versa,
has more tban repaid cost of construc-
tion.

For a complete receiver cheek-up in
his service work Moore employs latest
time-saving dynamic methods with
cathode ray, and so makes certain of

turning out a perfect job at pleasing,
prices to the customer. At the same
time he assures a worthwhile profit
for himself.

Included in his rolling instrument
assembly are a frequency-modulated r-f
oscillator, oscillograph, capacity ana-
lyzer, vacuum-tube voltmeter, 15-watt
amplifier, and a variable dummy an-
tenna.

BLIND MAN CHECKS TUBES,
FIXES RADIOS BY BRAILLE

Cecil Minard of Sandusky, Mich.,
is a man to remember. As far as we
know he is the only radio dealer who
tests tubes by Braille. Since 1925,
Mr. Minard has serviced and sold sets.
Yet he can't see a thing.

Tests All Receivi

Tubes, Including

New 50-Volt Series, Loctal Types

and Gaseous Rectifiers.

Separate Plate Tests on Diodes
and Rectifiers.

Neon Short and Leakage Test.

Illuminated Dial and RAD-GOOD

Scale.

• WITH THE 5 TRIPLETT SAFEGUARDS

against ObioUicance

i THE TRIPLETT ELECTRICAL INSTRUMENT
| 192 Harmon Ave., Bluffton, Ohio
■ Please send me more information on

□ Model 1615. □ I am also interested

CO.

! City

. State

complete in
carrying case

True dynamic mutual con-
ductance tube tester with simpli-
fied push-button control, the ulti-
mate for a complete tube test. Amplifier
and power tubes checked under operat-
ing conditions. Direct GOOD-BAD tube
reading on two-color scale. Both fila-
ment connections are made through
push-button switches, allowing for roam-
ing filaments. Same is true of plate
screen, C. G. location switches, etc. Ro-
tating chart has data for more than 200
receiving tubes — plus ballast tubes. Up-
to-date replacement charts available at
any time on a nominal cost exchange
basis.

*A11 Triplett Testers Selling for Over
.•(i^.'.OO Are Available on Attractive Time
Payment Plans.

See r*our Jobber or Write for Details

* PucliUnt'

ELECTRICAL INSTRUMENTS

For checking tubes he uses a Su-
preme 506 Push Button Tester with
a hinged meter case that permits him
to feel where the needle rests. There
is also a special jack so he can hear
if a tube is leaky or shorted. Also
by listening to the hum of the trans-
former in the tester he can tell
whether a tube is good or bad. In-
stead of the usual roll chart, he uses
a special Braille tube card that gives
him needed data.

Mr. Minard also services radios by
listening to their reproduction or by
using batteries and an earphone.
Thirteen years in radio, he has stead-
ily increased his business despite the
terrific handicap of blindness, now
owns his store and employs a service
man.

BOOK REVIEWS

THE HISTORY OF RADIO TO 1926

By Gleason L. Archer, LL.D.
President of Suffolk University

Starting with fire beacons in an-
cient times the author hurries through
important developments in communi-
cations to the discovery of radio. He
gives the olive wreath to Guglielmo
Marconi for discovering practical
wireless, but recognizes Henry, Fara-
day and Maxwell as the scientists who
first found electro-magnetic impulses
travelling through space.

It was Henry Hertz in 1887 who un-
locked the wireless secret and proved
electric waves could be sent at will.
Then Crookes in 1892 prophesied
"telegraphy across space" in a maga-
zine article and Edouard Branly in
the same year devised a detector.

Portable service lab designed and built

by Ernest Moore of Chickasha, Okla.,

saves time, impresses customers.

Radio Today

Servicing by touch for 13
years, blind man Cecil Min-
ard of Sandusky, Mich., has
built up a thriving radio
business.

Branley was probably helped in his
discovery by the work of Sir Oliver
Lodge whom he studied diligently.

After Marconi's success in 1895 the
story of radio becomes mixed up with
driving commercialism and the chron-
ology is as filled with patent litiga-
tions, bankruptcies and fierce compe-
tition as it is with improvements in
the art of radio broadcasting and re-
ception.

Proficiency in the art of broadcast-
ing and the birth of the new enter-
tainment are interestingly reported.
The amazing growth of broadcasting
companies and radio set manufactur-
ers colors the latter part of this cen-
tury's third decade with excitement
that even dizzied the heads of solid
visionaries.

There's the typical American story
of office boy to president, David Sar-
noff, now titan of RCA, and the equal-
ly unhappy story of Dr. Lee DeForest
who seemed to have spent most of his
time with his audion tube in either lit-
igation or bankruptcy courts.

Encomiums are given to the U. S.
Navy department for its recognition
of wireless importance, and the policy
of giving ambitious inventors money
and opportunity to develop radio de-
vices.

Big names like Owen D. Young,
Gen. James G. Harbord, former Presi-
dent Herbert Hoover and others are
brought into play for the important
places they filled in the cavalcade of
one of the twentieth century's great-
est industrial achievements.

Although the book is historical and
academic, it is easily read. The au-
thor's style is engaging, his vocabu-
lary not at all pedantic. He now is
writing a history of radio from 1926
to the present.

Published by American Historical
Society, Inc., New York, N. Y., 421
pages, priced at §4. — H. J.

FUNDAMENTALS OF RADIO

By Frederick E. Terman

* Fundamentals of Radio is an
abridged edition of the Terman's
well-known Radio Engineering with a
simplified treatment so as to make the
book more applicable for an introduc-
tory course in basic radio principles.
The text has been shortened and many
problems added for classroom work.

Assumption is made that the reader
understands at least elementary prin-
ciples of alternating current and high
school mathematics.

The subject is covered in an orderly,
easily understandable manner. Nu-
merous drawings, charts, and curves
supplement the mathematical treat-
ment so as to make the book valuable
also to those who are more interested
in answers rather than the reasons
behind the answers.

Besides the principles of radio,
chapters devoted to applications of
the basic theory to receivers, trans-
mitters, antennas, acoustics, and tele-
vision are included.

It is the reviewer's feeling that
Fundamentals of Radio is a must
item for the radioman — serviceman or
engineer — if he does not have already
Terman's Radio Engineering. Price
$3.75 — 450 pages. Published by Mc-
Graw-Hill Book Co., 330 W. 42nd St.,
New York, N. Y. — Radio Today.

Eveready models
30, 40

High volume
oscillation

* Check the line voltage mak-
ing sure that it is not over 110
volts. Adjust the variometer for no
oscillation by loosening the mount-
ing screws on the end of the con-
denser gang shaft and turning its
stator.

DEPENDABLE RADIO

• If we were to show the
replacement business of the
serviceman as a pie, the fail-
ure of the average Fixed
Resistor would account for
a slice that is more than a
quarter of the whole pie.
That means, of course, that
Old Man Centralab plays an
important part in the re-
placement business.

And with a resistor, hard as
stone, impervious to mois-
ture, shocks, excessive tem-
peratures, and vibration,
the wise serviceman finds it
"easy as eatin' pie" to com-
pletely satisfy that resistor
need with CENTRALAB.

Always specify, nay, insist
on Centralab at your jobber.

1 TYDF

TYPE
310

Baptized in fire at 2500
degrees . . . hard as stone.
Center core and ceramic
jacket fired together to
form a single shock-proof
unit. Pure copper covers
resistor end for wire lead
contact.

Centtalab

Milwaukee, Wis.

Division of Globe Union, Inc.

BRITISH CENTRALAB, LTD.
Canterbury Rd., Kilburn
London N.W. 6, England

FRENCH CENTRALAB CO.
118 Avenue Ledru-Rollin Paris XI, France

January, 1939

No feedback from rear of room

gives new Pick-up Control

IT'S the Western Electric 639A Cardioid Direc-
tional Mike — combining dynamic and ribbon
units in one mike — giving you clarity, fidelity
and control unmatched by either type alone !
With both units in operation, its pick-up is
equally good through 120°. By turning the 3-way
switch, you make it either a dynamic or a rib-
bon mike. In addition to its recognized superior-
ity for studio pick-up, it is also particularly good
for Public Address work because it reduces feed-
back. Send for full details.

Western Electric

CARDIOID DIRECTIONAL MIKE

GRAYBAR ELECTRIC CO., Graybar Building, New York, N. Y. rt-1-39

Please send booklet describing Western Electric's New 639A Mike.

NAME

ADDRESS _ _

CITY STATE_

IF YOU ARE A

DEALER

Hcaf

The so-called average dealer
and service man meets some of our
requirements, but he seldom meets

them all. The very things wh.ch
make the Tung-Sol Consent
Plan so valuable depend on selected
distribution.

READ THEM CAREFULLY

HaveyOUane

mess? u raU,° service bus- fc A

Is ^ur location free frn •

a'-dy established T^**** «* ./

'ung-So! agents? \f

Have von tu^ w

"*« „n s,and *< * ™».Wy slock *

"holesaler? " pr»"<led by the y

"'"wuregul,,., .

pwl7ma''",a'"T-*'«..uskedreMV/

Wave you K„(r •

U, y°U 0pe^eTou7hr^ —

+* ^u are a^e; rnS?n **• -**

0jt. wrife(:h;ay eragedea/er-"

TUN6-S0L U/V1P WoRK$ ,

F'CESi ATlANTA
CH'CAG0 ' OAIUS

NEW yo»K . ~ i— " /

e>"'C«.N^A»K.N.J. -

nmG-SOL

f»it $

Radio Today

SALES HELPS

ARCTURUS DEALER AIDS

Arcturus Radio Tube Co. plans a
liberal dealer policy for 1939 with
tested selling ideas and free material
included in a well-rounded program
that will provide greater store and
shop efficiency and aggressive sales
effort.

Better-than-ever display pieces, win-
dow streamers, direct mail material,
newspaper ads, electric signs, sta-
tionery, etc., will be offered, most of
them free to Arcturus dealers.

Arcturus Equipment Deals again
will provide an easy, economical way
for dealers to build customer good-
will and increase tube profits through
efficient service facilities. This equip-
ment includes latest models of tube
and set testing instruments, electric
clocks, charge and cash registers, neon
sign with dealer's name, portable type-
writers.

CHART EXPLAINS CATHODE RAY

So even John Doe can understand
cathode-ray tube principles, Allen Du-
mont Labs., 2 Main Ave., Passaic,
N. J., have issued a two-color litho-
graph showing cross-section of tube
and explanatory notes. Chart is 2M>
x3% feet, suited for wall display and
is in two colors. Copies available
direct at 50 cents each.

5-C0L0R SIGN FOR DEALERS

A colorful metal sign, 20"xl5" is
offered its dealers by Tung-Sol Radio
Tube Division of Newark, N. J. Paint-
ed in five colors and coated with var-
nish, sign features radio repairs and
is a silent salesman for tubes.

STAND SELLS DISC CLEANER

, . ... r/ , ■' t

3ott T*TT It

With the selling accent on discs for
1939, Recoton Corp., 178 Prince Street,
New York City, which sells record
players and accessories, has brought
out a colorful 10 x 13 display stand
featuring their record renewer. Stand
with bottle fits nicely on a counter and
ballyhoos the liquid as "three-purpose"
as it "cleans, lubricates and protects"
the playing disc.

DISPLAY RACK FOR PA

A new display rack for PA has been
put on the market by David Bogen
Co., 663 Broadway, N. Y. City. The
rack handles four amplifiers, and is
supplied with a phonograph motor on
a switching panel. Use of it cuts the
need for space and tables, says the
maker.

Switching panel is arranged with
two microphone inputs and four-point
selector switches for connecting phono-
graphs, amplifiers and speakers as
wanted.

Here's the Firsi Radio
Made for the Sportsman

WORKS ANYWHERE!

arry it with You— You don't have
to plug it in to any light circuit!

HAS SELF-CONTAINED AERIAL

B5^D PHILCO

PAL
RADIO

Twenty-two Seattle dealers upped sales recently with a

newspaper ad urging ski fans to buy portable sets, "the first

radio made for the sportsman."

How to Win
New Customers

and INFLUENCE
SALES-

EWART AUTO RADIO
REMOTE CONTROLS

for practically any car 1934 to 1939

Stewart not only offers a complete
line of Custom Built Panel Plates
for all popular cars from 1934 to
and including 1939 but also gives
you the advantage of easy in-
stallation, economy and customer
satisfaction.

Typical Stewart Model.
One control unit allows
either peep-hole or air-
plane dial installation.

Stewart remote control
unit affords individual
instrument panel instal-
lation for all popular
cars from 1934 to 1939
inclusive.

F. W. STEWART MFG. CORP.

340 W. HURON ST. CHICAGO, ILL.

January, 1939

The NEW

GUIDE

9$ Hew/

NEW EASY-TO-READ
SIZE AND STYLE . . .

ALL STANDARD AND
SPECIAL REPLACEMENTS

IT'S FREE!

Right now is the time to ask your
Jobber (or write to us) for the new
IRC Guide to All Standard and Spe-
cial Volume Control Replacements.
The finest, most complete Guide yet!
Just off the press — just waiting to go
to work for you. Get yours today!

SAVE MONEY THIS YEAR

The now IRC Guide tells exactly what
replacement to use on practically any ra-
dio receiver. Best ol all. it saves you real
money by showing how to use less costly
IRC standard controls on many so-called
"special" jobs. Exact duplicate replace-
ments are listed for use where standard
controls will not answer the requirements.
Time and again, however, a standard
control will fill the bill merely by cutting
the shait. grounding a terminal or adding
grid bias. IRC tells you how to do it —
saves you time and money. Other Guide
ieatures include complete listings oi the
new IRC Midget Controls (available March
1); new Universal Plug-in Shafts having
adjustable flat location; new Wire Wound
Controls; new Control accessories, etc.
Get' your copy at oncel

*tftf

but*

CI*4®

Wire Wound CONTROLS

Just out . . for low
power volume con-
trol and rheostat
use. Equipped with
famous IRC Silent
Spiral Connector.
Complete listings
included in the new
IRC Guide.

INTERNATIONAL RESISTANCE CO.

401 N. Broad Street • Philadelphia, Pa.

PARTS JOBBERS MUST TIG

Compact/ complete service needed

The nation's radio dealers and ser-
vicemen are well-served geographi-
cally by parts jobbers. As with auto
repair parts, even the small cities
have radio parts wholesalers. No part
of the country is far from either mail
or personal-service parts jobbers. The
economic results are extreme compe-
tition, with weak or unnecessary parts
jobbers failing.

In the next few years radio-parts
jobbing will become stabilized. These
jobbers will be radio-parts firms pri-
marily. If they handle radio sets it
will not be their chief activity. The
major-appliance jobbers with aggres-
sive radio-parts departments will be
the exception, not the rule. Whole-

"Specialize on lines in demand."

sale hardware jobbers and automotive
wholesalers should not be important
in radio-parts jobbing. The compact,
complete, competitive parts jobber
will win out, not the firm with size,
resources, and age, that does not spe-
cialize in parts.

Drawing the line

There will be a line of demarcation
between houses mostly wholesale with
some retailing, and the converse. The
backbone of the industry — the service-
man and dealer — will swing to the
former. No one expects a 100 per
cent wholesaler (viz. the rules of mem-
bership in National Radio Parts Job-
bers Association recognize that a
member may do a minor part of his
business at other than wholesale).
But the firms doing a promiscuous,
nationwide business will have to look
to the experimenter and casual cus-
tomer more and more. Economic rea-
sons will bring this about; also de-
velopments like labor-union organiza-
tion of servicemen, trade associations,
legislative licensing, will have their
effect.

Hit-and-miss radio-parts jobbing,
abetted by hungry parts manufactur-
ers, will disappear, along with these
parts manufacturers who cannot se-
cure their own position. Consolida-
tion will occur all along the line — in
stable manufacturing, sound jobbing,
and full-time serviceman and full-
fledged dealers. Radio amateurs and
experimenters will not be discrim-
inated against, but they will not set
the pace for trade demands and prac-
tices. Their purchases will shift in
the direction of complete factory-
made products, and as happened in
other fields, the larger, complete fab-
ricators will take over the field for-
merly left to smaller materials man-
facturers. The smarter parts jobbers
will level out their activity accord-
ingly. For example, photographic
supplies are now being adopted by
many radio parts jobbers. This is a
specific case of successfully imple-
menting parts.

Who will survive

We can look forward to a confident
future for the able, alert, and ac-
climated parts jobber. He is neces-
sary, and his success is limited mainly
by himself. The misfit, unneeded,
weak parts jobber will vanish and his
demise will have no great effect. The
following points will distinguish the
surviving group from the others:

1. Specialization on well-estab-
lished, in-demand lines, avoiding du-
plication and excess. To illustrate —
$50,000 annual volume business can

TEN COMMANDMENTS FOR PARTS
JOBBERS IN 1939

Specialize on lines in demand

Limit competing stocks

Make a sales program

Plan ahead, execute plan

Cut out easy credits

Collect money due

Take cash discounts

Add parallel lines (as cameras)

Carry complete stocks

Put wholesaling first

Radio Today

;n methods

:cee<

1939

be done properly with one tube line,
one or two control lines, one or two
transformer lines, and one or two
condenser lines. Jobbers doing be-
tween $50,000 and $100,000 can handle
two competing lines, but unless a job-
ber goes over $100,000 a year he
should not handle three condenser
lines, three control lines, two tube
lines, etc. The thinking jobber has
learned that he cannot get turnover
with four or five condenser lines, three
tube lines, etc.

Easy credit is "out"

2. Easy credit extension will van-
ish just as marginal servicemen and

y. ^VKyws —

"Make a plan and follow it out."

dealers vanish. There is a satisfac-
tory margin in jobbing parts and if
credit losses and lost cash discounts
were avoided the parts jobbers net
earnings would quickly ascend.

3. Too many jobbers, whether
working through catalogs or sales-
men, or both, have no definite sales
programs. Poor salesmenship, like
poor workanship, ruins many busi-
nesses. The parts jobbers that suc-
ceed plan ahead, and carry out their
plans. Parts manufacturers must dis-
tribute through the parts jobber —
not directly to the dealer — and the
set manufacturer who distributes
parts, whether they be general re-
placement parts or specific replace-
ment parts of his own or other manu-
facture, will have to follow suit.

BETTER BROADCASTS TO S.A.

Radio has become South America-
conscious recently and broadcasters
are improving programs. Better ex-
port markets are sure to follow. Most
recent is the CBS plan to use five dif-
ferent frequencies for short-waving
via W3XAU of Philadelphia to the
equatorial belt.

Jaiv&tte/ Jtotaru Converters

FOR CONVERTING D.C. TO fl.C.

• Built especially for radio and sound apparatus — cap-
acities 110 to 3250 volt amperes — with or without all
wave filters. Dynamotor construction — economical to
operate — ruggedly built for years of trouble-free service
— used or recommended by the largest manufacturers of
radio and sound apparatus throughout the world •
WHY EXPERIMENT — INSIST ON R JflNETTE

ASK FOR BULLETIN 13-1

Janette niaiuifeeiiumqr Gompaiuf

556-558 TUestltlonwje Steeet CHic^o, III. XL. S.J!.

Own a PRECISION sis a
TUBE SELLER!

Your National Union Jobber Will Give You
Buy 34 N. U. Tubes and /or Condensers

One If You
Per Month.

TESTS NEW LOKTALS
and SINGLE ENDED TUBES

The necessity for high efficiency modern tube test-
ing equipment is fully appreciated by aggressive
radio merchants who keep their shops up to the
minute. They can handle more work, build cus-
tomer good will and increase profit. This new
Precision 815fl Tube Seller incorporates the latest
scientific advancement in instrument design com-
bined with highest degree of eye value to impress
customers. It comes to you ready to do a thorough
going job on testing all tube types including the
new Loktal and single ended tubes, ballast units,
gas rectifiers and magic eyes. The tests are strictly
in accord with standardized RM3 specifications and
all electrodes^are individually tested. R load selector applies properly rated loads
to the tube under test. Each electrode can be neon short checked while tube is
hot. Noise test pin jacks provide for ear phone or amplifier connection. Of par-
ticular merchandising value is the big nine inch D'flronsval type meter with a
scale in three colored English reading sectors one inch wide. R calibrated per-
centage scale enables' tube matching. R scientific test device which you will b«
proud to own.

HERE'S HOW YOU GET ONE:

Your National Union jobber will give you one
of these fine new. Precision model 815/1 Tube
Sellers if you will contract with him to pur-
chase 25 National Union tubes and/or elec-
trolytic condensers now, 34 each month for
twenty-two months and 27 in the twenty-
fourth month^which concludes your two year
contract. You|place a small deposit when you
sign the contract and get it back as a mer-

chandise credit as soon as the total number of
tube and/or condenser points have been
earned. Why not get one right away, see your
jobber, sign up and the instrument is shipped
to vou immediately^vou have full use of it all
during trie time you are fulfilling your pur-
chasing agreement. If you don't know who
your nearest N.U. jobber is, send a coupon
today!

BUILT BY PRECISION-APPROVED BY N. U.
THESE TESTERS ARE QUALITY INSTRUMENTS

Come On!

Build Customer

Confidence

with
NATIONAL UNION
TUBES and
CONDENSERS

NATIONAL UNION RADIO CORP.

Newark, New Jersey.

Send me name of nearest N. U.
Jobber.

Name
Street ,
City

State

January, 1939

1939 SALES PUNCHES

yUlEIUNt sales carrying a sweet
profit will be plentiful for the job-
ber pushing this C-D line. Scien-
tifically designed, streamlined for
quick turnover, available in attrac-
tive colors, this line of interference
filters carries the 29 year C-D seal
of Quality.

EASY TO SELL

Just put the new, powerful C-D dis-
play, containing ten Quietones on a
counter — and the beautiful C-D
flasher display in the window. Our
advertising will do the rest. Then
watch your sales mount! You can't
beat this item for spring PROFITS !

POWERFUL ADVERTISING
CAMPAIGN

A powerful magazine campaign is
being started, advertising the
Quietone series. Direct by mail
leaflets and special instruction
sheets telling the Quietone story
are now being printed.

COMPELLING DISPLAY AND
ATTRACTIVE PACKAGES

A real sales getter will be the FREE
C-D flasher display. New packages
and display cartons have been de-
signed for the Quietone line. The
latest principles in merchandising
were used to create these stream-
lined, attractive containers.

■
Remember there's a Quietone unit
designed to meet every need. Talk
Quietone to your customers. Show
it — Sell it! It's your profit boost
for '39. Details on request.

CORNELL-DUBILIER

\electbic corporation

f 1022Hamilton Blvd., So. Plain/itld, N. J.

Cable Addra: ■'CORDV

{Continued from page 15)

so much per disc. Or rent the re-
corder for parties. Sales have re-
sulted from such rentals.

Where "selling up" is impossible,
most homes can be sold on more than
one small radio. That must be the
1939 sales strategy, everyone agrees.
By every possible means try to put
over the idea of a radio in every
room. The nursery, the kitchen, the
bedrooms, the rumpus room, even the
bathroom — all are places for the
smaller sets, while the living room
has its console.

Conservative installment selling
will help move big radio receivers.
Even the very low-income groups can
buy a more expensive set in this man-
ner. In Boston, the idea has worked
out well. And in New York's Span-
ish section one shop sells combina-
tions at not less than $135, all on
credit, to the music-loving Latins.
Yes, credit buying is part of the
1939 sales strategy, they all agree.

With all of these ideas, radio can't
forge ahead unless its basic policy of
a fair deal for the buyer, a fair profit
for the seller persists. All of those
contacted said that quality merchan-
dise must prevail. Trick deals should
be avoided like poison. Sell the sets
that the public has come to know and
respect. Be sure that your buyer is
going to get the best in performance.

What the manufacturers think

For the manufacturer, President
George K. Throckmorton of RCA Mfg.
Co., has this to say: "To keep his dol-
lar volume up, the dealer will have
to learn how to sell the smaller radio
units in greater volume. This should
not be hard because the lower selling
prices now make it practicable for
nearly every family to have a separate
receiver for almost every room in the
house. . . . One of the big jobs ahead
in 1939 is to make it easier for the
public to get the recorded music it
craves. Therein, too, lies a big prof-
it-making opportunity for retail deal-
ers. . . . During the coming year it
will be difficult to sell any radio set
for over a hundred dollars unless it
also has a good record reproducing
system. The smart retail merchan-
diser will concentrate his efforts on
this potential market for higher unit
sales."

"Quality, value and public accept-
ance of a product are constant in an
otherwise changing picture," says
President Larry Gubb of Philco Radio
& Television Corp. "Stock only those
products which represent the best in
engineering achievements and per-
formance. You will find that such
products, because of their quality and
performance, enjoy the very import-

ant public acceptance which will re-
ward your sales and advertising ef-
forts."

Zenith Radio Corp.'s president, Com-
mander E. F. McDonald, Jr., believes
in selling small radios for every room,
but thinks there still is a good market
for higher-priced receivers. "The
Christmas buying spurt proved that
there is a continuing market for a
representative line of higher-priced
models to replace rapidly obsoleting
old radios," he says. "Automatic tun-
ing, improved tone color systems, im-
proved reception ideas, and constant
refinement in design will inevitably
speed obsolescence during 1939."

Vice President Powel Crosley, III,
speaking for the Crosley Corp., be-
lieves television should be played
down to help radio sales. "If I were
a dealer," he says, "I would discount
television about 90 per cent for 1939
even if I were in a large city of dense
population. And I would encourage
people to buy radio sets instead of
waiting. For that wait for most people
is going to be a long one — a matter of
years instead of months before even
a small part of their expectations in
television can be realized."

Jobber's view given

Speaking from the distributor's
viewpoint is Ben Gross, head of Gross
Sales Co., Stromfoerg-Carlson repre-
sentative in the Bast. He believes a
return to first principles of selling will
make 1939 a good year. "The radio
dealer has been inclined to let things
slide," Gross says. "He has to pep up
both his store and his salesmanship.
He must try to sell a bigger set. He
can't just swim with the tide of ismall
sales. Fine cabinets that fit into fur-
niture plans are good selling points.
Combinations are popular. Let him
get after the people whose radios are
without a good tone or tuning system.
They are the prospects for 1939."

&mTmd,yr

Stevens Hotel, Chicago

Radio Today

They're from Missouri— Buddy Pondrom, Charles McCue, Jules Beneke
(Aerovox representative), Ann Sloss Ernest, and Mike Ebinger, ciga-
rette in hand, boss of St. Louis' Ebinger Radio supply Co.

From Ray A. Yerdon of the Forbes-
Meagher Music Co. of Madison, Wis.,
comes this report: "We have offset
the trend to lower-priced radios by
exploiting the radio-phonograph com-
bination. Thus we have raised our
unit sales from $70 to $100. The "Pee-
W'ees' we use as a traffic builder. . . .
Advertising, we have found, can either
make or break the general trend of
business in the community."

Jules Smith, radio sales manager
for the thirty Davega stores in metro-
politan New York, says his firm will
concentrate on records and combina-
tions in 1939. "We believe a high-
priced set must be a combination to
sell," he says. "Television is no threat.
We've put video receivers in three of
our stores, ready for demonstration
as soon as broadcasts istart. But we
don't find them hampering sales. We
convince the people they can convert
their radios to television."

Wants World Fair set

C. Scheder, radio buyer for Schus-
ter's Department Stores in Milwaukee,
Wis., writes that in 1939 his firm plans
to "promote consoles over $50; ar-
range a systematic step-up from $9.95
to $14.95, etc., for the midget; push
combinations and record players; see
more factory promotions to stimulate
the buying public; sell "tone" instead
of gadgets; promote a World's Fair
radio; offer a radio cabinet that will
really click."

From Pittsburgh, Pa., Buyer A. J.
Buzzard of Spear & Company, home
furnishers, agrees that "a dealer
should actively promote the sale of
three or four small radios for a home
where the customer does not appre-
ciate the better instrument. Dealers
should not overlook the profit possi-
bilities of phonograph combinations
with the attendant sales of records. . .
The radio market is not glutted with
over-production, therefore the dealer
has additional profit opportunities
through reducing trade-ins to a profit-
able percentage. ... It will be well for
every retailer to watch his expense of
operation closely and through so do-
ing, he should close the year 1939 with
a good net profit."

Arthur Silverberg, proprietor of the
busy Grand Central Radio, Inc., in
Manhattan, believes attractive win-
dow displays, good service and care-
ful advertising will be his strategy for
1939. He will continue his policy of
switching a customer to a larger, bet-
ter set at the very moment he shows
disfavor for the tone of a tiny re-
ceiver.

And Alfred Tuffery, sales manager
of the Rudolph Wurlitzer Co., New
York store, puts his 1939 emphasis on
diversity of lines. "If one thing
doesn't sell, I believe in trying some-
thing else," he says. That's why he
is going to push portable sets, com-
binations, home recorders and small
sets for every room. Good window
displays promotion stunts, plus limited
newspaper advertising will make 1939
a good year, he states.

Edgar S. Riedel, general sales man-
ager of Raytheon, views 1939 as a
banner radio year. Since inventories
are the lowest in five years, and the
business index is rising radily, he be-
lieves good radio times are ahead.
"Radio dealers will have increased
competition, however, from miscella-
neous dealers outside of the industry,
due to increased demand for small
sets that present no problem as pack-
age merchandise from these various
outlets. The smart dealers will con-
centrate on quality radio merchandise
and forget the trick deals of 'some-
thing for nothing' which tempted them
when sales were tough in 1938, result-
ing in less profit and loss of good
will," is his view.

CARD SELLS RESISTORS

A bright yellow-and-black counter or
wall card holding and displaying a
popular assortment of green cement-
coated wire-wound power resistors is
offered at no extra cost by Clarostat
Mfg. Co., Inc., 285 N. 6th St., Brook-
lyn, N. Y. The card holds twenty
Clarostat 10-watt resistors on clips
permitting immediate removal or re-
placement. Each space is printed with
the resistance value of the correspond-
ing unit.

NEW PROFITS

for RADIO DEALERS. SOUND SPECIAL-
ISTS. SERVICEMEN and others, in this
big virgin market

Selling - Installing - Servicing

RANGERTONE

CHIMES

Complete amplified chime installations and
chime recordings for towers, belfries, chapels,
reception and music rooms.
Every church is a prospect. Also many in-
stitutions, public buildings, schools, acad-
emies and residences.

Our Tower-Tone equipment, 25-note chimes,
chime recordings, manual and automatic
players and other Rangertone units give you
a flexibility meeting every requirement. All

complete easily understood by radio and

sound men.

No inventory — No risk — High unit sale —
Real profits — Growing library of chime rec-
ords— Special recordings on order.
And — an active market for chime records
playable on any phonograph or combination.
Don't let this money-making op-
portunity get away from you. Write
for the whole story TODAY.

:XNGERTONEJnc.

Electric -Music

Five Years of PRE-SALE Development
201 VERONA AVENUE NEWARK, N. J.

SOUND MEN!

ARE YOU OVERLOOKING CIS E?

See what FREE membership in the
Clarion Institute of Sound Engi-
neers does for those who qualify!
Gives you

1 Factory purchasing power!

2 Exclusive selling territory!

3 Free engineering and consulting
service !

4 Competition-smashing prices!

5 Protected profits on the fastest-
selling, most complete line of P.A.
equipment in the world!

Several choice territories still open.
Send today for complete information!

CLARION INSTITUTE OF SOUND ENGINEERS
19 WOOSTER STREET, NEW YORK CITY

January, 1939

Instruments that set their
OWN standards —

• The Simpson record is one more proof that a higher
standard does not have to wait long for recognition.
Unknown before August 1936, Simpson equipment
enters 1939 at the head of the instrument procession
in the opinion of hundreds of servicemen who recog-
nize the finer things in radio testing equipment.

See these modern instruments. Examine them
critically. Measure them by any standard — design,
workmanship, range, performance, beauty, and above
all sheer quality in solid terms of dollar value. One
careful inspection of any Simpson Instrument will be
your final reason for standardizing on this versatile line
for all of your testing needs.

A few of the many Simpson Instruments are briefly
described here — instruments that can make 1939 a
happy servicing year for you. Ask for latest bulletins.

SIMPSON

INSTRUMENTS THAT STAY ACCURATE

SIMPSON ELECTRIC COMPANY, 5202 Kinzie St., Chicago

Model 440
"Test Master"

• An all service tube and
set tester. Double-fila-
ment switching; screen
fluorescence and angle
test,* hot cathode leakage
test; high sensitivity neon
short-check; noise test; percentage scales;
"good" and "bad" scales. As set tester has
six A.C. and D.C. voltage ranges; resistance
ranges from 1 ohm to 100 megohms; four
milliamp ranges; six decibel
ranges; 0-15 amp. scale; neon $ C 4Q00
leakage lest, noise test, etc.
Your price

Model 333
Tube Tester

• Small and light in
weight. Tests all tubes,
including new Loctal
and other recently de-
veloped types. Has dou-
ble filament (^ • E A
switching. *26
Your price.. ****■

Model 230

• The smallest A.C.-
D.C instrument on the
market, yet it contains
a sufficient number of
ranges for the experi-
enced man to perform
a complete CdM jot
servicing job.91 £*'
Your price ...

EMBLEM, itu. <?

eSuHcewianl

-AND WHAT IT MEANS TO YOU

YA/M-

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CfcTVte^

THIS COV)^

Dear

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St-

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tAau'vng

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are

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National Yearly Dues. $3.00
Initiation Fee 7.00

It identifies you with the only national
independent organization of Servicemen
in the industry. It links you with fellow-
members in every State and in most for-
eign countries in a cooperative organiza-
tion run by and for the members, uncon-
trolled by any outside interests. You
elect your representatives. (All respon-
sible officers are bonded.)
And here is what the RSA does for you:
~k Supplies Advance Circuit Notes to
Members each month "k Gives Technical
Help on Service Problems * Maintains a
National Speakers' Bureau * Offers Ad-
vanced Service Courses to Members at
slight cost * Issues a Monthly RSA Pub-
lication * Provides for Annual Conven-
tion * Besides many other benefits now
being planned.

Don't be on the outside looking in. Join
Now. Send the Coupon Today!

Let's Cfcoiv ToGetlie'i in /939
RADIO SERVICEMEN OF AMERICA, INC.

Joe Marty, Jr., Executive Secretary, 304 S. Dearborn Street, Chicago, III.

State.

n«l

yniti'

for
al

Ct»aVter

»tio»-
,v»ere

orSs

Radio Today

Spic, span and easy to see is O'Loughlin's Radio Supply Co. in new Salt Lake
City quarters. Featured are Raytheon tubes, a stand-by with this 20-year-old firm.

TELEVISION SETS FIND
SALES IN N. Y. AREA

(Continued from page 16)

ers" are answered by the television
salesmen, who have made tidy com-
missions in the past few weeks.

Sales manager Len Cramer reports
inquiries from as widely-separated
points as California and Alabama.
In the former a dealer insisted that
a receiver be shipped to him although
he was told the Du Mont set received
441-line pictures, while Los Angeles
telecasts scan about 300 lines. An-
other dealer, in Bristol, Conn., wanted
a set just for the prestige and novelty
although he knew he was outside the
broadcast horizon of New York City.

Du Mont advises the dealer not to
sell the receivers until telecasts are
available and agrees to refund the
purchase price if the receivers do not
provide satisfactory pictures at that
time. Only one set is sold to a loca-
tion, and Du Mont makes the in-
stallation. Later, this will cost $25.
As television receivers are generally
critical, a proper installation is of
primary importance. Producing sets
at the rate of 20 per week, Du Mont
plans to step up the output when
sight broadcasts go on a regular
schedule.

Looking at television from an un-
biased viewpoint, it would seem as
though it had "caught on". This
New York experience indicates a
good market for the video sets as
soon as regularly scheduled telecasts
go on the air — shortly after the ex-
positions in New York and San Fran-
cisco get under way. It also indicates
that while radio dealers should warn
customers not to expect perfection,
they should not try to "kill" hopes for
the new science.

AEROVOX MOVES

Huge trailer - trucks, busy as
beetles, are moving 150 loads of
Aerovox Corp. machinery from Brook-
lyn to the new six-block plant at New
Bedford, Mass. New equipment is
being installed, and production at
full blast is set for Feb. 1.

Bought for cash, the new Areovox
factory is 433,000 square feet, four
times its present Brooklyn space, and
includes an office building, single-
story plant with saw-tooth skylights,
power-plant, three-story building, ail
of modern, sturdy brick construction,
sprinkler-equipped.

Key workers and foremen have
been training new personnel at New
Bedford, and resumption of activities
is to be smoothly worked out. States
Aerovox president 8. I. Cole:

"Despite strike handicaps and re-
gardless of difficulties involved in
moving a plant with so much heavy
equipment, we have nevertheless suc-
cessfully handled the peak jobbing
volume in our history.

"Once installed in eur new plant,
we shall be in the best position in our
history to take care of requirements.
On behalf of Aerovox, I wish to thaok
the trade for their cooperation and
consideration during the most trying
period now brought to a close."

Before automobile pro-
duction was standard-
ized, remember those
trick synthetic cars? A
chap inherited a for-
tune, decided to be a
motor magnate, bought
some wheels here and
some motors there and some honky horns
another place, called in a third-class body-
works for the "super-structure" .... and
when his chariots came off the assembly
line, nothing was NATIVE except the
name-plate!

Time marched on all over that condition in
motors, and will soon do the same for the
wire industry.

Today business men go more and more,
for a BONA-F1DE wire plant where all
the operations are performed under one
eagle eye, as the Frank Merriwell boob
would say.

CORWICO products— Hook-up Wires,
P. A. Cables and Antenna Supplies — are
made under one supervision. We do
everything, almost back to the copper-
mining .... even the actual drawing. Our
factory men are technicians right down to
their unmanicured finger-tips .... so that
it's straight goods when CORWICO
advertises its wires as

"Made by Engineers for Engineers"

This means something to Mr. Purchasing
Agent, too — on accounta he's getting the
most for his firm's hard-earned kopecks
when he specifies "CORWICO or bust!"

CORNISH WIRE CO., Inc.

30 Church Street, NEW YORK CITY

ATTENTION . . . Jobbers and Distributors

In re-checking and re-
vising our lists of job-
bers and distributors, we
invite your cooperation
in maintaining our cus-
tomary accuracy and
completeness. We will
appreciate it if you will
fill out this coupon and
mail to us promptly,
thus making sure that
you appear in our veri-
fied lists.

RADIO TODAY

480 Lexington Avenue
NEW YORK. N. Y.

Please fill out and mail to Radio Today.

Company name -

Street address

City State

Owner or manager _

Please list THREE OR MORE electrical or radio
lines that you are wholesaling.

January, 1939

WAXES

AND

COMPOUNDS

FOR

INSULATION & WATERPROOFING

of ELECTRICAL and RADIO

COMPONENTS

• such as transformers, coils,
power packs, pot heads, sockets,
wiring devices, wet and dry bat-
teries, etc. Also WAX SATU-
RATORS for braided wire and
tape and WAXES for radio
parts. The facilities of our
laboratories are at your disposal
to help solve your problems.

RSA GETS 6 NEW CHAPTERS

Following formal approval by the
executive committee, chapters of
RSA will soon be operative in St.
Joseph, Mo.; Scranton, Pa.; Fort
Wayne, Ind.; Springfield, 111.; and
Williamsport, Pa., home of the Cen-
tral Pennsylvania Chapter; and Al-
lentown, Pa.

Chapter news

Chicago — The oustanding event of
the month was a television lecture
by Walter Kenworth of RCA Insti-
tutes, Chicago, Dec. 14, the first lec-
ture of its kind ever to be given in
Chicago. At the same time there was
a meeting of the partially-organized
women's auxiliary in an adjoining
room. Mrs. John Polay is in charge
of this activity. The annual election
on Dec. 2 8 retained Ray Mason as
president and Robert L. Storey, sec-
retary. Harold Cunningham was
elected vice president and O. S. Daw-
son, treasurer.

Danville, 111. — There is much con-
troversy here over television. Rob-
ert Keeling, appointed to investigate,
reported at the last meeting of the
year on Dec. 30 that we should con-
stantly be on the alert for the new
developments of this new industry
in spite of the fact that it would not
reach our community for some time.

St. Paul, Minn. — Charles W. Fox
has been elected president; Paul
Davis, vice president, and Noel J.
Granger, secretary-treasurer. Direc-
tors are to be elected at one of the
January meetings.

WITH "THE REPRESENTATIVES"

"The Representatives" are plan-
ning a national publicity campaign
and have appointed C. B. Cooper of
Cooper-DiBlasi, 91 Seventh Avenue,
New York City, chairman of the pub-
licity committee.

President Dan R. Bittan announces
the names of the newly-elected sec-
tional vice-presidents: Russ Hines,
San Francisco; Earl Smith, Dallas;
E. Ralph Haines, Oak Park, 111.;
Brower Murphy, Atlanta, Ga.; Ar-
thur H. Baier, Cleveland, Ohio; Mar-
tin Friedman, Philadelphia, Pa.; Er-
nest K. Seyd, Hartford, Conn. Other
officers are John Forshay, vice-presi-
dent, and David Sonkin, secretary.

Another special program has been
planned for the next meeting on Jan-
uary 10 at the Fifth Avenue Tavern
headquarters in New York City after
the fine talk given at the last session
by Charley Golenpaul, Aerovox sales
manager.

Incidentally, Herb Roes tells one
on Representative F. C. Summers,
who recently fell and broke a bone
in his right leg. While convalescing
in an easy chair, he stretched over
to get an article off the table, upset
the chair, and broke a rib. We could
understand it if Summers was reach-
ing for an order . . .

Ray Perron of 211 Winthrop
Street, Taunton, Mass., New England
representative of Clough-Brengle, is
starting his third season of lecture
and demonstration meetings with the
service men in the New England dis-
trict.

GOING OVSl

u/itn

rPH E success of our proven plan of
■*• selling Home Diathermy Machines
through Radio Dealers and Service-
men is an established fact! The re-
sults in SALES has had no parallel
in the past 1 0 years ! Orders are coming
in from Dealers from Coast-to-Coast!

The question is: Are you getting
your share of the big juicy profits?
If not, you owe it to yourself to in-
vestigate today! Our Representatives
have been busy giving demonstrations.
If you have not yet heard our Sales
Story, write or wire today . . . because
it's hot.

List price $1 49.50 with a big, fat
protected profit for the Dealer! Fast,
easy sales on our local financed sales
plan!

SCIENTIFIC DIATHERMY CORP.

200 WEST 34th STREET • NEW YORK, N. Y.

18$T 8 MOBEW M I
90% Of m *W,°

semicf. em* —J

Including

Both Power and
Audio Transformers

• For $17.76 a service dealer can stock 8 models of
Halldorson Transformers that will answer 90% of all
radio service calls covering both power and audio re-
quirements.

And remember, the design of each transformer covers
the requirements of all the makes of sets for which it is
intended. When the investment is so low, why not be
prepared to give prompt transformer service with the
outstanding Vacuum Sealed Transformer line.

Write for details.

Halldorson

^S^ansformers

THE HALLDORSON COMPANY

4500 RAVESSWOOD AVE. CHICAGO, ILL.

Radio Today

Smiles that sell — Leo and Yale Meyerson of Wholesale Radio Laboratories,
Council Bluffs, Iowa, as pictured with Charles Golenpaul of Aerovox.

NEW BOOKLETS

Arcturus Radio Tube Co., Newark,
N. J. — data on 179 tubes with pin con-
nections, and full information on bal-
last tubes and replacements are con-
tained in this Tube Characteristic
Chart, available direct. Gives formu-
las for RMA ballast numbers regard-
less of original installation.

Hoyt Electrical Instruments Works.
Penacock, N. H. — new catalog on en-
tire line of meters and other test in-
struments, including new three-inch
DC meter. Available by writing to
Burton-Rogers Co., 857 Boylston
Street, Boston, Mass.

Universal Camera Corp., 28 W. 23
Street, N. Y. City — the growth of can-
did cameras and pictures of the new-
est models are in this new catalog.

Caunon Electric Development Co.,
420 W. Avenue 33, Los Angeles, Cal —
Bulletin "P" on sound system plugs,
receptacles and accessories. With di-
mensional sketches.

RCA Mfg. Co., Camden, N. J.— third
edition of catalog on the applications
of radio, recorded music, sound movie
projectors, etc., for schools Includes
portable and battery-operated sound
systems for rural schools.

Million Radio and Television Labs..
685 W. Ohio St., Chicago — new catalog
listing PA equipment from portable 5-
watt job to 35-watt system and includ-
ing mikes, etc.

Jefferson-Travis Radio Mfg. Corp.,
198 Milburn Ave., Baldwin, N. Y— lat-
est in marine boat radio telephone
equipment and accessories is contained
in catalog.

Stromberg-Carlson, Rochester, N. Y.
—black and white folder, 6% x Z^A,
for consumer use, describes complete
Stromberg line of sets, including 1939
interim models and record player,
headphone and antenna kits.

Allen B. Dumont Labs., Inc., 2 Main
Ave., Passaic, N. J. — 1939 catalog of
television demonstration equipment,

cathode-ray tubes, amplifiers, and in-
formative books.

Cornell-Dubilier Electric Corp.,
South Plainfield, N. J.— catalog 165-A,
consolidates capacitor listings and
description of catalog 161.

Insuline Corp. of America, 25 Park
Place, New York City — 40 pages of
receiving, transmitting parts and ac-
cessories, service tools and attach-
ments, racks, panels and chassis, an-
tennae and auto radio accessories are
included in this 1938-39 catalog.

Radolek Co., 601 W. Randolph St.,
Chicago — latest edition of profit guide,
contains 3,000 new items and 12,000 re-
pair parts. Includes appliances and
p. a. Available free on request stating
your radio connection.

Sprague Products Co.. North Adams,
Mass. — 1939 catalog of radio and motor
condensers. Lists several hundred
duplicate replacements. Copies from
jobbers or manufacturer.

RCA Victor Co.. Camden. N. J.—
nearly 1,000 dance records catalogued
in the Bluebird field. Available from
RCA.

Alfred A. Ghirardi's new radio ser-
vicing book, "Radio Trouble Shooter's
Handbook" is announced by Radio and
Technical Pub. Co., 45 Astor PL, N. Y.
City. Priced at $3, the companion book
to "Modern Radio Servicing" features
"Case Histories" in which troubles
found in 3,313 models from 177 manu-
facturers are analyzed and remedies
given. Also deals with auto radio in-
stallation and various data on tubes,
sound systems, etc.

John Meek Instruments, 164 N. May
St., Chicago, has a new bulletin on
how to design tube checker. It in-
cludes circuit data, emission, power
output and mutual conductance notes.
Copy available by mentioning Radio
Today.

Catalog by Stern-Brown, Inc., 42-24
Orchard St., Long Island City. N. Y.,
describes their new electric folding flat
iron, especially designed for traveling,
and the new swingdoor electric toaster
which automatically reverses the toast,
prevents finger-burning.

SO EASY

to gef started
in the sale of

RECORDS!

and

Economical, too,
with the new

BITTER-BUILT

Merchandising
Equipment

ADD A UNIT

Unit cabinet No. 100, AS YOU GROW!
walnut finish, for use in-
dependently or as a unit Cabinets for display
of a large record depart- _ , ,
ment. Holds 1000 rec- or storage, suitable
ords, 75 albums Price for any inventory—
FOB factory uncrated $40. '

large or small.

Write for illustrated
folder. Layout sug-
gestions free.

•
Unit cabinet No. 26,
walnut finish on sheet
steel, for display and
storage. Use flat on
a counter or hang on
wall. Holds 125 rec-
ords. Price, FOB
factory, boxed, $6.75.

A. BITTER CONSTRUCTION CO.

27-01 Bridge Plaza North, Long Island City, N. Y.

Specialists in store modernization

and store equipment, serving many

nationally-known retailers.

tiswTtyfo-

in this MONEY SAVING
A-B POWER SUPPLY

for Farm Radios and Low Power Transmitters

IT OPERATES ON SIX VOLTS— either storage
battery or wind charger! Provides 1 ■ 2 or 2 volts
"A" power and "B" voltages of 45, 67, 90, 135,
and 180. Eliminates A and B Battery costs forever.

Small — easy to install — operates automatically
off radio receiver switch. Powers average 7-tube
set 50 hours on one charge of 130 amp-hr battery.
Every battery set owner wants it.

Get complete details on this Model I Electro
Power Supply. Ask your jobber or order sample
on attached coupon. List $19.95. Dealer Net $13.31.

eScTRO PRODUCTS LABORATORIES
549- B W. Randolph St., Chicago

□ Send information on the Model I.

□ Ship at once.

(State check enclosed or COD.)

Name

Address

City

Jobber's Name i."«iiii."i™™i"™™

January, 1939

You Need It!

X- A Piug-ln Resistor Tester. Indispensable today.
^ Indicates good or bad units. Also tests voltage-
dropping power cords.

^ Self-contained. Plugs into outlet. Handsome metal
^ case and panel. Indicating meter. Takes UX and
octal bases, and cord plug. All-metal case.

^ Extremely compact. 5% x 5%. x 2". Reference
W wall chart with each instrument. Only $7.45
dealer's net cost.

^. Ask your local CLAROSTAT jobber to show you
^ this instrument. Or write us direct for descrip-
tive literature.

(

AERIALS

ARE

EASY TO SELL
-EASY TO INSTALL

Write

foi new catalog ol Ward's
complete line ol low-priced
manufacturers - approved
aerials for car and home-
also get on mailing list for
free magazine packed with
selling and service tips.

PRODUCTS
CORP

WARD BLDG.

CLEVELAND, 0.

TRADE FLASHES

RCA Mfg. Corp.'s George K. Throck-
morton announces three promotions,
effective Jan. 1. H. E. Leroy, executive
asst. to engineering v.p. becomes man-
ager, special apparatus mfg. division.
A. L. Pipper takes over Leroy's duties
as assistant to V.p. Lewis M. Clement,
and H. C. Shepard steps into Pipper's
shoes as manager of the standardiza-
tion dept.

Charles Watson has been appointed
northwest sales representative of radio,
parts and sound systems for Stromberg-
Carlson Telephone Mfg. Co. Jack Hoyt
has been transferred to the Texas ter-
ritory. Kenneth Gillespie, radio sales
manager of S-C's Kansas City branch,
has added the southern Nebraska ter-
ritory to his last, and Ted Holzem is
now contacting the radio trade in
western Iowa and northern Nebraska.

Sonora Radio & Television Corp.,
Chicago, will soon celebrate the 25th
anniversary of the introduction of
Sonora's name, President Joe Gerl an-
nounces. A special silver jubilee
model, emblems, stickers and tags will
be used.

Earl C. Dietrich, Raytheon replace-
ment sales manager, has returned to
New York City after a two-month trip
that took him through 37 states. Tube
business throughout the country is
definitely better and the upswing will
continue through 1939, he reports.

Fada Radio and Electric Co., Long
Island City, N. Y., has added 30,000
square feet to its factory, General
Manager J. M. Marks has announced.
He also reports Fada's biggest year
with good demand for consoles and
combinations as well as table models.

Charles A. Yerschoor has been elect-
ed chairman of the board of Interna-

Dayton Acme Co.'s new v.p. David

E. Johnson points at his firm's new

tube tester with Loctal socket.

Man behind Sonora Radio & Tele-
vision Corp.'s speed is James G. Old-
field, newly-named production super-
intendent of the Chicago plant.

tional Industries, Inc., Ann Arbor,
Mich., formerly International Radio
Corp. Other new officers are John
Brad field, president; Gustave A. Fas-
sin, vice president; Robert T. Herk-
ner, secretary and treasurer; L. C.
Gillespie, assistant secretary; John
Bradfield. G. Stanley Porter and Wil-
liam E. Brown, Jr., executive commit-
tee. The company now is marketing
"Rapidex," a fluid-feed type of dupli-
cator, in addition to radios and cam-

. Dayton Acme Co., Cincinnati, Ohio,
announces a new line of precision radio
testing equipment and a service inno-
vation in the "Daco Radio Service
Club." The club, of which any dealer
who purchases and registers a piece
of Daco equipment automatically be-
comes a member, provides service men
throughout the country with complete
data on all existing radio equipment,
together with advance information on
circuit and tube characteristics and
changes. The club also will answer
questions and attempt to solve any
problem for the radio serviceman.

Sales of Majestic Radio & Television
Corp. are up 200 per cent for the six
months ending Nov. 30, reports Sales
Promotion Manager Harry Byrne. The
Chicago plant has been working extra
shifts to meet the demand.

President A. L. Moore of Colortone
Acoustic Devices, Inc., announces the
appointment of Irving Schlank as man-
ager of the firm's new Chicago sales
office, known as Colortone Sales Corp.

Robert H. Campbell has been named
sales manager of Ansley Radio Corp.,
New York City, makers of Dynaphone
radios and combinations.

Electro Products Laboratories is now
located at 549 W. Randolph Street, Chi-
cago, 111.

Hugh H. Eby, Inc., has moved into
a new, enlarged factory at 4700 Stenton
Ave., Philadelphia, and has added to
its molding and other equipment.

Radio Today

• INDEX •

ADVERTISEMENTS

Page

ALLIED RADIO CORP 58

AMPERITE CO 42

BITTER CONSTRUCTION CO., A 55

CENTRALAB 45

CLAROSTAT MFG. CO., INC 56

CONT. RADIO & TELEV. CORP 24, 25, 26

CORNELL-DUBILIER ELEC. CORP 50

CORNISH WIRE CO., INC 53

CROSLEY CORP 21

ELECTRO PRODUCTS LABS 55

GALE PRODUCTS 37

GENERAL ELECTRIC CO Cover II

HALLDORSON CO 54

HYGRADE SYLVANIA CORP 2

INTERNATIONAL RESISTANCE CO 48

JANETTE MFG. CO 49

KEN-RAD TUBE & LAMP CORP 44

MALLORY & CO., INC., P. R 1

MEISSNER MFG. CO Cover IV

NATIONAL UNION RADIO CORP 49

PAR-METAL PRODUCTS CORP 58

PHILCO RADIO & TELEV. CORP.

Phonograph Div. 8
PHILCO RADIO & TELEV. CORP.,

Tube Div. Cover III

RADIO CORP. OF AMERICA 6

RADIO SERVICEMEN OF AMERICA, INC... 52

RANGERTONE, INC 51

RAYTHEON PRODUCTION CORP 5

RCA MFG. CO., INC., Radiotron Div 33

RCA MFG. CO., INC., Record Div 32

RCA MFG. CO., INC., Victor Div 30, 31

SCIENTIFIC DIATHERMY CORP 54

SERVICE INSTRUMENTS, INC 41

SIMPSON ELECTRIC CO 52

SOLAR MFG. CORP 57

SPARKS-WITHINGTON CO 7

STEWART MFG. CORP., F. W 47

STROMBERG-CARLSON TELE. MFG. CO.... 3

TRANSFORMER CORP. OF AMER 51

TRIPLETT ELEC. INSTRUMENT CO 44

TUNG-SOL LAMP WORKS, INC 46

WARD PRODUCTS CORP 56

WESTERN ELEC. (Graybar Elec. Co.) 46

WESTON ELEC. INSTRUMENT CORP 34

ZENITH RADIO CORP 4

ZOPHAR MILLS, INC 54

While every precaution is taken to insure
accuracy, we cannot guarantee against the
possibility of an occasional change or
omission in the preparation of this index.

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measures Insulation Resistance to 1000 megohms, using
test voltages to 600 D.C.; detects leakage and intermit-
tents. A.C. operated.

Cat. No. CC-1-60 (110 v., 60 eye.) Less tubes— $24.90 net
Order through your jobber

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January, 1939

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I I

I Name
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y Address ■

Harold Davis, alert jobber of Jackson, Miss., who recommends cooperative dealer-
serviceman-newspaper advertising on vertical antennas.

Sentinel Radio Corp., Chicago, an-
nounces the appointment of two factory
representatives: Sanford Samuel for
New York, Philadelphia, Baltimore and
Washington; E. J. Jordan for Cali-
fornia.

W. G. H. Finch, president. Finch
Telecommunications Laboratories, Inc.,
has announced that William A. Bruno
of New York City is now licensed to
manufacture Finch Facsimile receivers
in "kit" form.

Herbert A. Brennan and Peter A.
Wilkinson have formed Brennan-Wil-
kinson. Inc., 220 East 42nd St., New
York City, to represent manufacturers
and act as merchandising counsellors.

Robert 31. Hadley Co. of Los Angeles
has opened an eastern factory at New-
ark, Del., for the production of its ra-
dio transformers. President Hadley
will be in charge.

Standard Transformer Corp.. Chicago,
announces three new appointments.
Gerard L. McCole will sell to jobbers
in Illinois, including metropolitan Chi-
cago; William E. McFadden will take
care of jobbers in Ohio, Indiana and
Kentucky, making headquarters at 256
E. Gates St., Columbus, Ohio, and
Wally Swank, with an office at 610
Blaine Ave., Detroit, will serve Stancor
Michigan wholesalers.

E. E. Butler of Atlanta has been
named sales representative of Mueller
Electric Co.. 1583 E. 31 St., Cleveland,
for the Southeast, including North and
South Carolina, Georgia, Florida, Ala-
bama and Tennessee.

Br. S. J. Begun, formerly with
Acoustic Consultants, Inc., and Guided
Radio Co. has joined the technical staff
of Brush Development Co. Prior to
1935, Dr. Begun was with several Ger-
man telephone and sound system firms.

No deterrent at all to sale of the
Ansley Bynatone is the two-page
spread in Life magazine for Jan. 9,
featuring the electronic piano made by
Ansley Radio Corp., 240 W. 23rd St.,
New York City.

The Star Machine factory, Bronx,
N. Y. City, plans another big year in
auto radio, states Isidore Finkel, sales
manager. A new line of Star control
and custom-matched escutcheon plates
for all 1939 motor cars will be featured.

JOBBERS AND REPS.

SAN FRANCISCO— Thirty prizes
were given West Coast sales people at
the recent dealer meeting held by
Philco in the administration building
of 1939 Golden Gate International Ex-
position. First award went to Miss
Radacher of Peffer Music Co., Stock-
ton; second, William Senders, Martin
Piano and Radio Co., San Francisco.
More than 1100 dealers, salesmen and
their wives attended the meeting, spon-
sored by Thompson & Holmes, Ltd.,
Los Angeles. Cliff Bettinger, Philco's
Pacific Coast div. man. presided.

CAMDEN, N. J.— RCA Victor job-
bers were guests here and in New York
City at a week-end party sponsored by
President David Sarnoff of RCA and
George Throckmorton, head of RCA
Victor.

The party was a thank-you for the
distributors' spontaneous drive to
break sales records for November ?>.nd
December. Al Slap, sales manager,
Raymond Rosen & Co., Philadelphia,
and President William E. O'Connor, of
Southern Wholesalers, Wash., thought
up the idea as a fitting climax to 40th
anniversary drive and wired each RCA
Victor jobber to cooperate.

CHICAGO— Distributors recently ap-
pointed by Majestic Radio and Televi-
sion Corp. are: Arvedon Electric Sup-
ply, 71 Portland St., Boston, Mass.;
Capital Paper Co., 211 W. South St.,
Indianapolis, Ind.; Central Co., 117 N.
2nd St., Stevens Point, Wis.; Coghlin
Electric, 30 Exchange, Worcester,
Mass.; Minot Supply Co.. Minot, No.
Dak.; Herman-Brownlow Co., Spring-
field, Mo.; Hi-Speed Tire & Accessory
Co., 229 23rd St., Toledo, Ohio; Iowa
Wholesale Lab., 746 W. Broadway,
Council Bluffs, Iowa; Milhender-Afes,
617 Atlantic Ave., Boston, Mass.; Mur-
phy Supply Co., Green Bay, Wis.;
John D. Osgood, Inc., 8 Pleasant St.,
Haverhill, Mass.

NEW YORK— Philco Radio & Tele-
vision Corp. of New York, 254 Fourth
Ave., N. Y. City, and 393 Central Ave.,
Newark, N. J., changed its name to
Philco Distributors, Inc., New York
Division, effective Jan. 1.

Radio Today

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Meissner Adapter Kits! So, go after this business —
now — before someone else gets it! Priced to give you a
real profit! See these kits at your Parts Jobber today.
Or write for further information to Dept. T-l at the
factory.

A real noise silencer designed to reduce static, man-made
interference, and improve short wave reception. Based on
the famous Lamb circuit. Operates with any superheterodyne receiver with-
out regard to the number of I.F. stages; an additional stage of I.F. within the
Silencer, making a four-tube unit, compensates for losses.

A complete kit — self-powered — takes but a few milliamperes from the
receiver. Requires only a few minutes to assemble and wire. For receivers
having an intermediate frequency of 450 to 470 KC. Equipped with a six-point
adapter for plugging into receiver. Operates on 110 volts, AC or DC.
Dealer's Net Prf,ce — $6.90

PHONOGRAPH OSCILLATOR

^ ^mimmmmm^^^^mmmmma^m ^ complete self-contained unit. Connects a phonograph

pick-up without affecting performance of radio. Acts as
a miniature broadcast station. Just tune radio to its frequency same as you
would a broadcast program.

Has its own power supply. Hook-up consists of making two connections-
one to antenna post, the other to ground post of receiver. As it can be turned
off and on by a switch, you may listen as you wish — to famous recordings— or
regular broadcast programs. Operates on 110 volts AC or DC.
Dealer's Net Price — $6.90

FREQUENCY OSCILLATOR

^^^^^^^^^^^_ With this unit even the inexperienced DX hunter now
can locate quickly the desired station by the turn of a
switch. Self-powered — completely self-contained— operates on 110 volts AC
or DC. One connection to the radio and one to your AC outlet is all that is
necessary. May be used with any set having 456 to 465 KC I.F. Battery-oper-
ated unit also available. 110 Volt Unit Dealer's Net Price — $6.90
Battery-operated Unit — Dealer's Net Price — $3.60

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Cable Address — PELMAUO

REPLACEMENT
VOLUME CONTROLS

RADIO TODAY February, 1939, Vol. V, No. 2, published monthly by C'aldwell-Clements, Inc., 480 Lexington Ave., New York, N. Y. Subscription
pnce U b. and Latin American countries, $1.00 for 2 years; Canada: $1.25 for 2 years. All other countries $2.00 for 2 years; single copy, 15c. Entered
as Second-class matter July 24, 1936, at the post office at New York, N. Y., under the Act of March 3, 1879. Printed in U.S.A. Member of A. B. C.
Copyright 1939 bv Caldwell -Clements, Inc.

LOOK FO

► ■ PROFIT DEPENDABILITY: But most important to you, after all, is profit. That's why you must fea-
ture a tube line that assures you maximum returns— both on a per-sale basis and from year-to-year, too.

MONEY— hard, cold cash— is your first con-
sideration, of course. But when choosing the
tube line to feature, look further than that
— check on the company and product as well.
Feature the Sylvania line during 1939. For

Sylvania gives you full measure on "all
three"— company, product and profit de-
pendability. It's the perfect combination for
a better tube business ., . . this year and
every year!

Hygrade Sylvania Corp., Emporium, Pa. • Also makers of Hy grade Lamp Bulbs.

SELL SYLVANIA

SET-TESTED

it A It I O

TUBES

YOU enjoy movies more because of radio.
Radio helps make movies so interesting
that the annual attendance in the United States
equals twice the population of the world. Yet
few realize that the reproduction of voices
and the whole range of sound that makes
pictures live — is a laboratory product based
on research in radio and sound.

Because the recording and reproduction
of sound involves so many principles which
have grown out of radio, research in RCA
Laboratories has been, and continues to be
a big factor in creating finer motion picture
sound entertainment. This work is closely
connected with research and actual practice
in making Victor Records and operating the
National Broadcasting Company.

Here is another example of the way in
which RCA uses research to develop ser-
vices of benefit to the whole world. It was
research that built the world-wide radio mes-
sage service of R.C.A. Communications. . .
research that developed the RCA direction
finder' ' and other safety devices for ships at
sea which the Radiomarine Corporation of
America supplies . . . research that has made
RCA Victor Radios and RCA Victrolas out-
standing in the field of radio and record en-
tertainment.

Because the Radio Corporation is active
in every field of radio, the sum total of its
research benefits every person engaged in the
sale of radio products. The efforts of RCA
make radio more attractive to those who
listen and thereby improve the opportunities
of those who sell radio instruments. This is
in line with the RCA policy of making radio
serve more people in more ways and serve
them better in all ways.

Listen to the "Magic Key of RCA'" e-ziery Sunday,
2 to 3 P.M., E. S. T., on the NBC Blue Network.

RCA Contributions

to Three
Important Phases

of Making
Talking Pictures

Recording sound through Directional
"mike,'' one of the outstanding micro-
phones developed by RCA Laboratories.
RCA microphones are used in film and
radio studios all over the world.

I Radio Corporation of America

RADIO CITY, NEW YORK

RCA MANUFACTURING CO., INC. RCA INSTITUTES, INC. NATIONAL BROADCASTING COMPANY

RADIOMARINE CORPORATION OF AMERICA R.C.A. COMMUNICATIONS, INC.

February, 1939

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with Meissner Low-Loss Ceramic Base Mica Di-electric trimmer
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improves the receiver !

Eliminate Signal or

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For those of your customers who are annoyed at intermittent signal or
code interference, MEISSNER offers Wave Traps to suit every purpose.
They are connected to the aerial lead-in of the receiver, and are adjusta-
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and easy to attach — Meissner Wave Traps are priced to make a handsome
profit for you.

DeLuxe Dual Universal Wave Trap

A dual wave trap tuning two frequencies. Tunes 400-475 kc to eliminate
code signals, etc., entering receiver at the intermediate frequency. Also
tunes 550 to 1950 kc for interfering signals in the Broadcast and low-
frequency Police bands. Constructed with Ferrocart (iron core) for
greater efficiency. Retail List, $2.65.

NOTE: Other Meissner Wave Traps available Jor eliminating
interference on amateur bands or other wave bands.

SEE YOUR PARTS JOBBER OR WRITE DEPT. T-2, MT. CARMEL, ILL.

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February, 1939

Vi^ljiU •HJJt' UV1

I'B 23 1939

Vinton K. Ulrich

Managing Editor

Darrell Bartee
G. H. Mayorga
N. McAllister
M. H. Newton
R. Neubauer
B. V. Spinetta

M. E. Herring

Sales Manager

R. Y. Fitzpatrick
201 N. Wells, Chicago, III.

Orestes H. Caldwell
Editor

M. Clements
Publisher

Vol. V, No. 2
Copyright 1939

Caldwell-Clements, Inc.

Tel. PLaza 3-1340

480 Lexington Ave.

New York, N. Y.

Member Audit Bureau of Circulations

FALSE ALARMS
RETARD SET SALES

Recent press stories about new radio
developments still in the laboratory
stage have had the effect of holding
up radio sales in certain sections of
the country.

In self-interest both radio dealers
and servicemen should take out time
to tell customers there are no radical
changes in radio to obsolete present
sets.

Television, which has recently re-
ceived much publicity, is going to be
available only in a few of the larger
cities, and it is going to be a supple-
mentary type of service. People will
still listen to our present types of
broadcasts for many years to come.

Stanford University's "Rumbatron"
which has been called a new type of
radio, at present is only a laboratory
device for producing extremely short-
waves of about 1/10 of a meter. Sug-
gested applications to date are for
aviation landing beacons and televi-

L. E. Gubb, president of Philco, whose
Palm Beach convention launched big
expansion program into new fields.

sion relay circuits. Even the inventors
have not made any suggestions as to
how these wavelengths might be used
by the public. With no consumer
uses in sight, the radio trade certainly
can tell the public that it will not
have any direct effects on broadcast-
ing.

Discussed elsewhere in this issue is
an article on frequency-modulated
broadcast transmissions. Here again,
the radio buying public should not
put off buying a new radio set be-
cause of this development, for at most
it will only be a supplementary factor
in a manner similar to television.

Jobbers and manufacturers are
urging their dealers to set the public
straight on these widely misunder-
stood developments. While radio is
continually progressing, the public
should not be allowed to get the idea
that the manufacturers are holding
back — for such is far from the truth.

PHILCO ENTERS REFRIGERATION,
AIR-CONDITIONING AND BATTERY
FIELDS. TELEVISION IN MAY.

To inaugurate the largest expansion
in Philco's history, 400 Philco execu-
tives, field representatives and dealers
attended a mid-winter convention held
Feb. 16-19 at Palm Beach. A com-
plete new line of electric refrigerators,
new series of air-conditioners, and a
line of dry batteries for all uses was
announced.

"Philco expansion into other indus-
tries," declared Philco president L. E.
Gubb, "does not mean for one mo-
ment that it will lessen our concentra-
tion on radio. It does mean that we
consider that there will be a very sub-
stantial economic upswing during
1939, making it a propitious time for
healthy expansion."

Opportunities for "year-round prof-
its" were emphasized in connection
with the new lines. Philco television
sets, it was announced, will be ready
in May.

50,000-HOUR TUBES
IMPRACTICAL FOR RADIO SETS

A few weeks ago before the anti-
monopoly committee, D'r. F. B. Jewett
of Bell Labs made the statement that
tubes that would last for 50,000 hours
had been used by the telephone com-
pany for many years. Newspapers
in some sectors played up story inti-
mating that radio manufacturers were
gypping the public. Had Dr. Jewett
been given an opportunity to explain,
he would probably have pointed out
that the 50,000-hour tubes are much
more expensive to make — that they
would last for about 50 years in a
radio set that has a probable life of
3 to 5 years. Also it would mean that
our present sets selling for $10 would
have to sell for about $30-$40 because
of the increased cost of tubes — and the
set would wear out long before the
tubes showed signs of deteriorating.

Present radio tubes average useful
lives of 5 to 8 years.

Tom Joyce, newest and youngest vice-
president of RCA Mfg. Co., whose in-
teresting biography is on page 45.

Radio Todav

L. L. Kelsey, radio veteran, is now
head of radio sales for Stewart-
Warner, Chicago.

KELSEY SEES BRIGHT PROSPECTS

L. L. Kelsey, radio sales manager,
Stewart-Warner Corporation, a vet-
eran with over twenty years' expe-
rience in the radio industry, ex-
presses the following outlook for
radio during 1939 : "Not for several
years at least has the industry been
able to step into a new year with as
little distress selling and so many
bright prospects as was the case this
year. Our own inventory was re-
duced to a negligible factor which ap-
parently was the case with the major-
ity of other radio manufacturers. The
outlook so far as we are concerned is
the most encouraging that we have
ever faced and the reception of the
Campus and Senior Varsity models as
well as the new eight-tube console has
far exceeded our expectations."

Stewart-Warner's radio division is
now a separate unit under Mr. Kel-
sey, with C. P. Galloway as assistant
sales manager.

E. A. NICHOLAS HEADS UP NEW
$5,000,000 FARNSW0RTH CORP,

The Farnsworth Radio & Television
Corporation has applied for registra-
tion of capital stock totalling about
$5,000,000 and plans to take over the
factories of the Capehart company
at Tort Wayne, Ind., and the TJ. S.
Radio & Television Company at Mar-
ion, Ind., as well as the laboratories
of the former Farnsworth organiza-
tion at Philadelphia. Kuhn, Loeb &
Co., leading investment bankers, are
behind the new corporation.

E. A. Nicholas, former head of the

RCA license division, will head up
the new company as president, and
Philo Farnsworth will be vice-presi-
dent in charge of research. Ray
Cummings, for years in charge of
transmitter engineering and design
for General Electric and RCA, will
be assistant vice-president. Other
important announcements will be
made shortly. Mr. Nicholas is tem-
porarily making his office at 61
Broadway, New York City, but will
later have his headquarters at one
of ,tbe Indiana plants.

The new Farnsworth corporation
plans to manufacture television re-
ceivers and transmitters under the
Farnsworth patents, as well as radio
receivers, combination phonograph-
radios, and other commercial radio
apparatus. It is planned to continue
the Capehart merchandising set-up
substantially as it exists today.

1938 DOLLAR VOLUME OF SETS
OFF 33% FROM 1937

The dollar volume of radio set and
phonograph sales for 1938 was 33.4
per cent lower than the previous year,
according to figures based on the 5
per cent excise tax collections by the
government. Month by month sales
of radio sets by the manufacturers in
terms of the tax collections are shown
on the accompanying chart for 1935
to 1938.

Because of the fact that tax col-
lections for 1935 and 1938 were almost
the same in spite of more than 25 per
cent reduction in the average selling
price, some prophets are inclined to
believe that the radio set production
for 1938 will be 7^ to 8 millions.
Earlier this year both the RMA and
Radio Today estimated 6 millions.

E. A. Nicholas, who has been head
of RCA license division, becomes
president of Farnsworth Television.

Yearly figures are given below :
Year Tax collections Units

1935 $4,436,423.34 6,026.800

1936 6,514,898.45 8,248,000

1937 6,658,962.23 8,064,780

1938 4.431,614.20 unavailable

In 1935 the radio industry intro-
duced new models in September in-
stead of June as is now done. As a
result the sales during the summer
of 1935 were extremely low. Aside
from this variation, the monthly per-
centages for each year are quite sim-
ilar. At the end of 1937 there was a
general business slump that shows its
effect on the sales of sets for that
period.

Donald MacGregor, who was pic-
tured on page 10 of the January issue,
is the new general ■manager of Web-
ster-Chicago.

February, 1939

CALLING ALL
RADIO MEN

Certain now that their interests
are the same, broadcasters, radio-set
makers, and the radio trade are
shortly getting together in a giant
nation-wide drive "to use radio, to
sell radio." Key man, however, is the
radio dealer, who, it is hoped, will
help put over the plan.

Aim of the campaign is to get more
listeners and sell more sets. But it
will shoot at this goal by glorifying
the American system of broadcasting
and promoting the idea that U. S.
radio receivers are best in the world.

Keen minds of a joint committee
named by Radio Mfrs. Assn. and Na-
tional Association of Broadcasters,
decided the drive should featurj these
points :

1. To increase the amount of lis-
tening.

2. To improve the quality of home
reception.

3. To sell the excellence, variety
and extent of American radio pro-
gram service.

4. To sell the American system of
Broadcasting and the contributions
made by the individual stations.

To be mutual effort

Working through the NAB public
relations department, the drive will
coordinate efforts to sell more radio
sets and improve reception. In each
community, NAB broadcasters will
be asked to invite radio retailers and

Whole industry gets to-
gether on nation-wide drive
to use radio to sell radio

distributors in their areas to a meet-
ing which will be held either in the
station studios or at some other agree-
able location. The local broadcaster
will be asked to serve as chairman of
the meeting, and to present the en-
tire project.

Broadcasters will be given printed
material outlining the campaign, and
will be furnished with a transcription
record dramatizing the drive, and con-
taining messages from the presidents
of NAB and EMA.

Radio networks will contribute one
program a week to the campaign, and
transcriptions will be furnished non-
network stations every week. Stations
also will be encouraged to contribute
their own programs, calculated to sell
their own operations, as well as Amer-
ican radio generally.

Retailers to help

So much for the broadcasters. On
the set selling end, retailers will be
asked to distribute literature to their
customers. Such booklets as "The
ABO of Radio," which explains radio
graphically and informally, will be
used. Special window displays will
be distributed to provide a tie-up with
local stations. Newspaper and other
advertising will be coordinated with
the central themes of the campaign.

AIMS OF THE DRIVE

1 . To increase the amount of listening.

2. To improve the quality of home
reception.

3/To sell the excellence, variety and
extent of American radio programs

4. To sell the American system of
broadcasting.

Radio Today

A CHECK LIST FOR 1939

Ten Cardinal Points of
American Radio Selling

Go out and set the business.

Demonstrate in the home.

Follow up former customers (or
new sales.

Cooperate with manufacturers in
newspaper advertising.

Use the mail to send out circulars,
booklets.

Have an attractive, clean store,-
courteous staff.

Keep attractive displays in your
show windows.

Offer installment payments on
higher-priced sets.

Use service calls as openings for
receiver selling.

Sell programs, tone quality, con-
venience— not technical details.

and national advertising of manufac-
turers will also feature the drive.

Preliminary plans for the campaign
were worked out by Sayre Ramsdell,
Frank Mullen, and Bond Geddes of
RMA and Neville Miller and Ed
Kirby of NAB. Long-talked-of, this
is the first concrete plan for boosting
radio set sales and radio listening in
mutual cooperation.

For the past several years. Radio
Today has employed a similar plan.
Its editor, Dr. O. H. Caldwell has
gone on the air with industry mes-
sages more than 150 times, outlining
new models, new radio improvements,
urging listeners to have their sets
checked up so that they may hear
programs better.

Aids entire industry

Viewed from the broadcaster's, the
manufacturer's or retailer's viewpoint,
the cooperative drive is an important
thing. It will stimulate interest in
new radios, will make the public real-
ize the value of the American system
of radio, and will focus attention on
outstanding programs.

Everyone in the radio industry of
course benefits from this. Increased
interest in programs means more set
sales, and that means more listeners.
All along the line, manufacturer,
wholesaler, retailer will benefit. The
serviceman will have more installa-
tions, and since the drive will stress
quality reception, listeners will call
in service experts to fix up their pres-
ent sets. And this in turn leads to
new sales.

More and better-satisfied listeners
provide a stronger selling punch for
broadcasting stations interested in
stepping up the sponsor list. . . . And
so it goes on the round robin, which
radio folk have failed to realize for
all too long.

But now, it's full speed ahead !

'A B C OF RADIO

Entitled -'The ABC of Radio," a
brochure issued by the National Assn.
of Broadcasters tells graphically and
simply the story of American radio.
It is designed as the first piece of lit-
erature in the drive by manufacturers
and broadcasters "to use radio to sell
radio."

Retailers will be furnished with
this and other informative booklets
for distribution to their customers.
Beginning with a simplified explana-
tion of the technical end of broad-
casting and reception, the brochure
describes the history of U. S. broad-
casting, tells how wavelengths are al-
lotted. It also includes a paean of
praise for the freedom of American
radio and points out the incalculable
value a radio set is to the average
family.

FIT THE ROOM WITH
A PERIOD RADIO

"When people of artistic discrim-
ination buy a radio, above all be sure
the cabinet stays in harmony with
the room," is the advice of H. L.
Weisburgh of Mersman Bros., makers
of Brunswick radios. "It is impor-
tant to match any room in an au-
thentic design. This is easily done
by remembering that if the customers
furniture is 18th century, any other
18th century cabinet will fit in per-
fectly, whether it be English or
French. Swedish Modern is also be-
ing used with this group by many
decorators this year."

The best style sellers are Shera-
ton, Chippendale, Adams and French
Provincial, counsels Mr. Weisburgh.'
Duncan Phyfe is always good. But
beware of Early American pieces in
the middle West or West, as they sell
well only in the East, especially New
England and Virginia. Many of the
women's magazines are now featuring
period radios in their columns, ap-
pealing to those who want their radio
to be a fine piece of furniture. A tie-in
here should be easily accomplished.

h ** I 1 VT-^

V J COMPtTf «T L^* >

#* >o ,^>^\ St "VICING ^

^ AND V

J LISTENING PUBLIC

27,500,000 HOMES WITH RAt

RADIOS

Adapted from the first issue of Radio Today, September 193

February, 1939

1939 AUTO-RADIO OUTLOOK OPTIMISTIC

Increased buying power and demand for auto radio sets
seen by industry leaders — New sets offer more per dollar

Motorola's 9-24 mounts on dash, has
separate speaker and P. B. tuning.

Boost-o-matic model by Motorola
features extreme sensitivity.

Mechanical push-button tuning and
low cost are featured in RCA model.

Auto-radio sales for 1939 promise
to exceed those for the previous year,
if the upturn in business conditions
and the increasing sales of automo-
biles are the slightest indication.

While an increasing percentage of
sales are being made by the automo-
tive dealers, the radio dealers still
have the edge on the motor car outlets.
First of all, the radio industry has
introduced some strikingly new ideas;
second, radio dealers can offer a great-
er choice of models over a wider range
of prices; finally, the radio dealers
have a better knowledge of the prod-
uct from the sales angles and are in
a better position to properly install
the -receiver.

"With both new and used automo-
biles selling in substantially greater
volume this year, radio dealers should
look forward to selling more auto
radio receivers in 1939 than last
year," states Henry C. Bonfig.
Comm'l Vice-Pres. of ECA.

Aggressive promotion by RCA

"Accordingly, RCA-Victor plans to
promote the sale of its line of auto
radio models aggressively during the
coming year.

"Because of the yearly obsolescence
of panel plates for each make of car.
all our receivers this year are de-
signed for installation under the edge
of the instrument panel. This de-

The 1939 Plymouth lady flicks a finger on her car's dashboard, and, presto! one
of six stations answers the radio call in a flash.

cision is based on several outstanding
advantages," Mr. Bonfig explains.
"Some of these are as follows:

"1. They fit any make of car.

"2. They cost less to install.

"3. The manufacturer is able to
give the car owner more radio for less
money.

"4. Permits use of mechanical
push-button tuning.

"5. The sets may be transferred
easily to other cars when purchased."

P/iifco predicts all-time high

From Philco's vice-president Sayre
Ramsdell comes an even more opti-
mistic outlook. "Auto radio sales
should hit an unprecedented high-
water mark for 1939, because public
acceptance of the auto radio has
reached the point where it is consid-
ered as necessary to comfort and en-
tertainment as the radio in the home.

"More and more motorists are pro-
gressively becoming more conscious of
the full advantages of auto radio.
Because the automobile has come
to be called the second American
home, there exists a billion-dollar
market in this field, and a very fertile
one for dealer enterprise.

"For one thing," continued Mr.
Ramsdell, "the development of su-
perior tonal quality and mechanical
efficiency have taken auto-radio com-
pletely out of the gadget class. With
car owners beginning to feel that
auto radio is a necessity, with a tre-
mendous market for auto radios in
the used car market, 1939 figures will
prove that auto radio has become an-
other American institution."

Speaking only in terms of sets sold
by radio dealers, Ross Siragusa, Presi-
dent of Continental, manufacturer
of Admiral sets, states, "It is my

Radio Today

1939 AUTO RADIO SPECIFICATIONS

No. Watts Amps. Speaker

Tone

Type

Push

tuning
controls

botton
tuning

-ilUUcI L.ISI Ol dUUlU UdLIt

No. price tubes power drain Size Location

trol

Continental Radio & Television Corp., 3800 Cortland St., Chicago,

111. — "Admiral"

55 $24.95 5-OM 3 53^ 5 Inset

Direct

Yes

69 39.95 6-OM Wi 6 6 Inset

Yes

Remote

Yes

Garvin Mfg. Co., 4545 Augusta Blvd., Chicago, 111. — "Motorola"

9-24 24.95 6-L NS NS 8 Cowl

Direct

Yes

9-29 29.95 6-G NS NS 5y2 Inset

Remote

9-49 49.95 6-L NS NS 6 Inset

Remote

Yes

9-69 69.95 8-L NS NS 8 Cowl

Remote

Yes

9-44 44.98 6-G NS NS 6 Inset

Remote

Fordf Special 6-G NS NS 6 Inst, panel

Remote

Yes

Chevr. Special 6-L NS NS 6 Inst, panel

Direct

Yes

Chrysl.* Special 6-G NS NS 6 Inst, panel

Direct

Yes

Oldsmob. Special 6-L NS NS 8 Cowl

Direct

Yes

Buick Special 7-L NS NS 8 Inst, panel

Direct

Yes

tAlso fits Mercury *Also fits DeSoto, Dodge, Plymouth

Howard Radio Co., 1735 Belmont Ave., Chicago, 111. — "Howard"

HA-10 $39.95 6-MO 2% 6.6 6 In set

Direct

Yes

Noblitt-Sparks Industries, Columbus, Ind. — "Arvin"

7A $24.95 5-OM 3.2 6 5M Inset

Remote

8A 29.95 6-OM 3.2 6 5H Inset

Direct

Yes

44C 44.95 6-MO 4.5 7 8 Inset

Yes

Remote

RCA Mfg. Co., Inc., Front & Cooper Sts., Camden, N. J— "RCA-Victor"

9M1 $24.95 5-M 4 6M 5 In set

Direct

Yes

9M2 29.95 6-M 3}£ 7.4 5 In set

Direct

Yes

Additional models to be announced in March.

Troy Radio & Television Co., 1144 S. Olive St , Los Angeles, Calif. —

"Troy"

85 $34 . 50 5-G 2 5J4 5y2 In set

Remote

belief that the peak in auto-radio
sales has been reached, as the new car
trade is rapidly diminishing. This
situation is brought about by the
combine of car manufacturers who
are equipping their new models with
radios.

"The bulk of the future auto-radio
business lies in the used car trade
calling for low-priced receivers. Our
jobbers are in excellent position to
service this class of trade, as well as
the higher priced group, since we are
making auto radios available in both
the low and medium priced ranges."

Signal boosting

Xew tubes, new signal boosting cir-
cuits, more compact designs make the
1939 auto radio a sensational value.
Generally, the auto-radio manufac-
turers are reducing the number of
models in their lines, with the ex-
ception of Galvin who is making cus-
tom Motorola models to fit such cars
as Buick, Chrysler, Chevrolet, De-
Soto, Dodge, Ford, Mercury, Olds-
mobile, Plymouth.

Both manual and push-button tun-
ing models are available as shown in
the accompanying auto-radio specifi-
cations tabulated on this page.

Push-button systems have been sim-
plified and made more positive in op-
eration. Trimmer, mechanical, and
motor-operated types are offered.

Antenna matching and signal

Types of aerials that can be used
with modern cars. No. 1 typifies
the numerous roof-top models.
Cowl and hinge antennas are il-
lustrated by type 2. Running-
board antennas of many different
designs are shown as type 3, while
4 represents the insulated running
board. No. 5 is typical of all fish-
pole units.

boosting is provided by the Phantom
Filter unit in the Arvin receivers that
are designed to operate with cowl or
hinge type antennas.

In order to provide maximum sig-
nal pick-up, Motorola has developed

Separate speaker, compact dash-mount-
ing unit are featured by Howard.

the "boost-o-matic" which gives 15
times greater sensitivity. In this re-
ceiver, an antenna coil at the aerial is
automatically tuned through the
movement of an iron core that is
ganged to the variable condenser.
Thus the antenna is automatically
tuned for greatest pick-up efficiency.

Loktal tubes are used in some of the
sets permitting more compact design
and more dependable operation with
varying battery voltages in the car.

Antennas are continually being im-

Top is the Arvin 44C using remote

tuning controls. Model 8A is for dash

mounting and features P.B. tuning.

proved. Xew types are available that
require no drilling of the ear. Spe-
cial clamps hold them to the car with-
out marring the finish. So far, the
cowl and hinge types are the most
popular. However, the latter type
cannot be used on many of the newer
models, since invisible hinges are be-
ing used on the doors, which means
that the cowl type will soon be the
best seller.

A few of the car manufacturers are
still recommending insulated running
boards. With these cars it is possible
to have a truly invisible car antenna
— running board insulators are avail-
able from several sources.

Another antenna type that is being
used is the under car, which may
take the form of running board an-
tenna or a wire stretched under the
car. Fish-poles for the rear can still
be had. Other types are insulated
trunk covers, insulated bumpers, in-
sulated brackets on bumper, hood
aerials, etc.

Improved lead-in cables are found
in the new aerials and better shielding
against external noise is obtained.

When the crowd gets tired
of skiing, this Philco Port-
able will hit the spot with
everyone.

SPOTLIGHT PORTABLES!

Focus attention on these best sellers
by taking them wherever there's a crowd

"Wherever you go, take a portable
along and let 'em hear it."

That's a good slogan for this win-
ter season. Good sales strategy for
weekends and business days. Nothing
sells the new type of set like a demon-
stration. People gape at the no-an-
tenna, no wire-connection sets. They
marvel at its compactness, its light
weight, its swell tone.

Curiosity often leads to sales. And
having a portable on the scene stimu-
lates that curiosity.

On the ice-skating pond, at the ski
slide, at parties, at lodge meetings,
on a night-club table, in a Pullman
compartment — portables attract at-
tention and make sales.

Suggests Vic Mucher of Clarostat
Mfg. Co. of Brooklyn, N. T. : "Why
don't dealers, distributors and manu-
facturers give out portables over the
week-end to their employes who get
around. Showing these sets to their
friends will be A-l promotion. With
40,000 to 50,000 servicemen and sales-
men showing such sets in public over

week-ends, a tremendous exposure to
the public would result, followed by
many sales."

This is mighty good sales promo-
tion. Loan portables to your work-
ers and let them demonstrate. Let
a skating or ski fan take one out
to show his friends at the week-
end fun. When you go to the Ro-
tary, Lions or some other luncheon
club or lodge meeting, take a portable
along. During the social period you
can thrill the boys with a demonstra-
tion. In your window displays and
advertising, feature the many uses of
this new, compact set with the low-
drain tubes. Stress the fact that it is
not just another portable, but a highly
improved set that is just the thing
for traveling.

Folks like bandsmen are fine pros-
pects. Recently, Tommy Dorsey
bought all his boys portables. While
hopping around to one-night stands,
the bandsmen tune in their sets to
hear rival musicians. Variety folk
find them swell for backtage dressing

rooms. Traveling salesmen and ex-
ecutives like them, too. For any
place where a source of current is not
available or convenient, the portable
fills the bill. And that goes, too, for
the swank skating pond at Rockefeller
Center in New York City, as shown
on our cover.

Harper s Bazaar used portables in a
unique advertising stunt. To insure
the leading fashion experts hearing
new fashion notes broadcast via short
wave from Paris by Harper's Carmel
Snow, an already-playing portable,
pre-tuned to the correct station, and
wrapped in cellophane was delivered
to each of the experts. A note to each
expert said : "Listen to Carmel Snow
on this RCA Victor, and read Har-
per's Bazaar March 1st, March 15th
and April 1st." The delivery boys
also informed each one that the set
was a gift if they would listen to the
broadcast.

Low operating cosf

Cost of operating these new por-
tables is estimated at about 2 to 3
cents an hour which includes both A
and B power. This extremely low cost
is accomplished through the use of the
new low-drain 1.4 volt tubes and im-
proved batteries.

Manufacturers announcing battery

portables are:

Belmont

Mission Bell

Continental

Philco

Crosley

Pilot

De Wald

RCA

Emerson

Sentinel

Espey

Sonora

Fada

Troy

General Electric

Stewart-Warner

Grebe

Warwick

Halson

Wells-Gardner

Howard

Westinghouse

Hotels are swell prospects for battery
portable sets, suggests RCA. Initial
investment is extremely low — operat-
ing cost reasonable.

Radio Today

THE $6.95 RADIO SET

Its circuits and new tubes explained:
New markets tapped by low price

Confirming rumors current
throughout the trade for some weeks,
the $6.95 radio set is here.

Because many feel that these new
low-priced units will tap new and
greatly widened markets, and because
of the intense interest in this new
lowest-price development to date,
Radio Today presents full informa-
tion on the new CF 255 set just an-
nounced by Emerson.

This 2-tube AC-DC receiver, built
around two dual tubes, performs
equally as well as previous 4-tube
AC-D'C tuned-radio-frequency re-
ceivers. A sensitivity of 300 to 600
microvolts is obtained with produc-
tion receivers.

Straight design

While the use of only two tubes
suggests some trick circuits, the new
"Emersonette"' is straight forward in
circuit design. A type 12B8GT tube
has a pentode and triode unit in a
single envelope. The remote cut-off
type pentode is similar to a 6D6 tube,
but is so designed as to produce 25
per cent more amplification. The tri-
ode section, especially designed for
power grid detection, corresponds to
the 6E5 type of tube.

A block diagram shows the circuit
of this new receiver, and for sim-
plicity the sections of the tubes are
shown separately.

The 32L7GT tube combines a
beam-power output tube and a half-
wave rectifier. The beam-power sec-
tion is equivalent to a type 25L6 ex-
cept for 25 per cent less power output
caused by a reduction in the size of
the tube elements. The rectifier is
equivalent to half of the 25Z5 tube.

Novel dial

Several unusual features are found
in this set. Eirst is the use of an
illuminated vernier dial. This dial is
but part of the condenser mounting
bracket, and the pointer is a small
piece of metal attached to the drive
cord. The set is held into the front
of the cabinet by means of several
molded projections that keep the
chassis flush with the bottom of the
cabinet. At the rear two screws fasten

Two-tube AC-DC radio having per-
formance equivalent to 4-tube set.
Being only 6^4 inches wide it is
easily held in the hand.

the chassis and the protective back to
the cabinet.

A new 4-inch permanent magnet
speaker of the magnetic type gives
performance equivalent to that of a
dynamic speaker, yet simplifies the set
since an output transformer is not
necessary.

Throughout the set, which has been
in the design laboratory for many
months, are a host of money saving
ideas that have made it possible to
produce the receiver for such a low
price.

Measuring only 6J4 inches wide by

4^4 high by ZXA deep, the set fills a
need for travelling persons. For an
aerial, a hank of flexible wire is sup-
plied.

Ten million sets in '39?

"In the October issue of Radio To-
day/' explains Ben Abrams, president
of Emerson, "I predicted an eventual
sale of twelve to fifteen million sets a
year in the United States. I believe
today that we shall come very close to
selling ten million sets in 1939, as
compared to little more than half that
number in 1938. At any rate Emer-
son is designing its models, and plan-
ning its advertising and sales promo-
tion toward that end, and it is grati-
fying to note that our distributors
and dealers have caught the spirit of
this purpose."

In announcing the new set it was
explained that quantities would be
offered to dealers only in proportion
to purchases of standard Emerson
models, thus preventing dealers from
concentrating on only low-priced
models. The Emersonette is supplied
in walnut bakelite cabinet to sell at
$6.95 ; red. green and ivory are 50
cents extra.

NETWORKS' BILLINGS GAIN

NBC set an all-time high for bill-
ings on its stations in January by
selling $4,033,900 worth of advertis-
ing time. This is a 6.3 per cent rise
over January, 1938, and a 3.8 per
cent rise over December, 1938.

CBS reports gross billings of $2,-
674,057 for January, or a gain of 5.7
per cent over December, 1938. Last
year's January sale were the largest
in CBS history.

Mutual staged a 16.7 per cent gain
in gross billings in January 1939 over
last January, or $315,078 compared
with $269,894 for total time sold.

Block diagram of new $6.95 receiver using dual-type tubes.

February, 1939

WHAT SIZE AMPLIFIER TO USE

Effect of room size and noise level upon
power required for sound installations

The amount of acoustical sound
energy for a public address or sound
installation depends upon the size
of the room, the acoustical condi-
tions in the room, and the noise level
against which the sound system must
compete. While sound level measure-
ments in the room are desirable, it is
possible, to obtain satisfactory results
in most cases by using charts based on
average sound installations.

The first step in using a chart for
determining the sound energy required
is to calculate the volume of the room
based on dimensions. Next the nor-
mal background noise level should be
estimated.

Background noise levels

For the sake of simplicity, the noise
level can be compared to levels with
which almost everyone is familiar. The
most quiet place where a sound sys-
tem would be used is a church. The
second step on the list is a quiet
theater,' third a moderately-noisy thea-
ter, and finally a very noisy room or
auditorium". These four classifications
are suitable for practically every pos-
sible installation, and are shown on
the accompanying chart of acoustical
watts vs. room volume.

For high-fidelity reception it has
been found that 40 decibles above the
noise level is desirable. It is on this
basis that the curves have been de-
veloped.

So after calculating the volume of
the room, the acoustical power for any
stated noise level can be found from
the chart. Values for a moderately-
noisy room are read from the chart,
using the line labeled ' 'moderately-
noisy theatre," etc.

The values given are for high-fidel-
ity reception. If only speech reproduc-
tion is needed and the low frequencies
are filtered out, it is possible to use an
acoustical power of approximately one-
half of that shown by the chart. Most
sound men, however, prefer to install
the full amount of power required, for
later on high-fidelity music reproduc-
tion may be desirable.

Speaker efficiency

To convert the acoustical power to
electrical requires a knowledge of the
loudspeaker efficiency. In other words,
it is necessary for the amplifier to
supply the losses in the speaker unit
or units as well as the acoustical
energy.

AVERAGE SPEAKER EFFICIENCIES

Low-cost cone 3%

Good cone unit 5%

High efficiency cone 5-8%

Horn if used increases efficiency

of cone speaker from 2 to 3 times
Exponential type horns . . 25-45%

Loudspeakers, depending upon the
baffle, the unit, and directional char-
acteristics, have efficiencies that vary
from 3 per cent up to 55 per cent. As-
suming identical installations, the
choice of speakers would have more
tnan a 18 to 1 effect on the electrical
power needed to provide the same
acoustical energy. If the speaker effi-
ciency is 3 per cent, then the electrical
power must be 33 times the acoustical
sound power. Or if a 50 per cent
speaker efficiency is achieved, the elec-
trical energy must be twice the acous-
tical energy needed.

3 to 5% efficiency usual

"The average electrodynamic speak-
er," according to Mr. Weibler of
Operadio Mfg. Co., "delivers 3 to 5
per cent of its input when mounted on
the usual-size flat baffle. If a horn is
used, this is increased to as high as
40 to 45 per cent; the efficiency in-
creasing as the horn approaches the
exponential type, creating a more ef-
fective coupling to the air with a
greater air column loading.

"The true exponential horn uses an
electrodynamic unit differing from the
usual paper cone reproducer.

"The figure of 5 per cent efficiency
may reach as high as 8 per cent when
a reproducer is a high-quality perma-
nent magnet assembly. The higher fig-
ures of 40 to 45 per cent do not change
materially, however, as the field input
has much less bearing on the efficiency,
inasmuch as the increased efficiency
is obtained through better coupling to
the media of sound."

Mr. Weibler adds, "Generally the
efficiency ratings are only fairly re-
liable to one thousand or fifteen hun-
dred cycles per second. The lower fre-
quency efficiency is greatly determined
by the effectiveness of the baffle used.
Obviously, no figures can be given at
the lower frequencies without consid-
ering specific cases.

"The enclosure type of baffle will in-
crease the efficiency at the lower fre-
quencies. The efficiency at the funda-
mental frequency of the enclosure will
approach that of the true exponential
horn. This condition will exist to a
gradually decreasing amount at each
multiple of the fundamental reinforce-
ment frequency."

Horns more efficient

Concluding, Mr. Weibler states, "The
efficiency of horn type assemblies is
generally based on figures obtained
within the useful coverage angle of the
horn and does not refer to the amount
of sound received at the side or back
of the horn. The horn type of unit,
however, is most useful where sound
is to be directed as in a theater. It
enables the operator to somewhat con-
trol the distribution so as to obtain
an equalization of intensity through-
out a given area."

In order to help the sound man quickly'
determine the efficiency of different
types of speakers, the accompanying
table has been compiled. Because of
numerous variables and different char-
acteristics of speakers of various man-
ufacturers, the figures are only aver-
age. Wide variations may be expected.
Fortunately these variations in effi-
ciencies are not too serious if the
acoustical requirements are first ob-
tained from the accompanying chart.

Special installations such as roller
skating rinks, steel mills and the like
have not been included on the chart.
But since high-fidelity reception is
never expected in such places, the
sound man will be quite safe in using
the figures given for an extremely
noisy room. In a roller skating rink
it is only necessary to have sufficient
sound level so as to hear the record-
ings or orchestra. Likewise, in fac-
tories .speech intelligibility is the only
requirement.

Church chimes

Outdoor installations offer special
problems that cannot be discussed in
this article. But in passing, a word
about chimes is not amiss. Major
Ranger of Rangertone states that 30
to 50 watts in an amplifier is desirable
in churches. One or more amplifiers
should be used depending on the num-
ber of directions that need to be
covered.

Using a 35 to 50-watt amplifier with
a single speaker, the chimes can be
normally heard some half mile away

Radio Todav

in the direction of the horn. Also a
single horn can be heard a couple
blocks away at the sides and the rear,
because of sound reflections.

Since chimes are instantaneous in
nature, a speaker with a 30-watt voice
coil dissipation will easily handle the
output of a 50-watt amplifier. This ap-
plies to both recorded and amplified
chimes.

So for church tower chime installa-
tions the rule seems to be 50 watts
power for each speaker of 30 watts
capacity. Generally one to three
speakers are used.

Average reverberation

So far no mention of the reverbera-
tion time on auditoriums has been
made. For outdoor installations re-
verberation is not a problem. Inside
installations should take reverberation
into account. But for the chart given,
only an average of all conditions found
is possible. In practically every in-
stance, the chart will give power re-
quirements that are on the high side.
But this is a desirable condition, for
it is poor policy to run an amplifier
at its maximum output — a certain
amount of power should be kept in re-
serve for peak requirements.

PRESENT "SOUND" OUTLETS
AND THEIR PROBLEMS

Editor, Radio Today:

On numerous occasions I have been
asked to express my views on the
position of the radio jobber in the
Sound industry today. I hope that the
following comment will prove of more
than usual interest to your readers.

It is common knowledge that the
radio jobber is gradually losing his
heretofore enviable position in the
Sound Industry. In the interests of
the radio trade at large, I would like
to present my view's on present-day
Sound merchandising. Criticisms and
suggestions are specifically invited.

Public is "wise"

Members of the public today are
"discount wise." They insist upon
buying from sources which they be-
lieve are in the best position to dis-
tribute their requirements at the low-
est possible prices.

Further, it is apparent that present-
day outlets for sound equipment do
not differentiate between types of cus-
tomers. Servicemen, industrial en-
gineers, night-club owners and unclass-
ified P. A. users, are all treated in ex-
actly the same fashion.

Anyone purchasing a sound system

from a mail-order house buys at the
dealer's price. In an effort to com-
pete with these mail-order houses,
parts jobbers are following this same
procedure

The mail-order house sells princi-
pally through the medium of its cat-
alogue and local sales offices. Anyone
desiring a sound system is sold at the
catalogue price. Prices in general are
lower, for the simple reason that a
company of this type normally sells
for cash. Further, its operating over-
head is lower and the turnover greater.

First, the major portion of equip-
ment sold by mail-order companies is
bought by the ultimate consumer.
S'econd, a considerable amount is pur-
chased by individuals, who are able to
sell this same equipment at a price
higher than the mail-order resale. This
is (possible because the customers of
these individuals know absolutely noth-
ing about the trade and have no reason
whatsoever to investigate this aspect
of the business.

The third type of customer which
is common to all sales agencies, is
the party who buys for rental purposes
only. In this case it doesn't matter
who sells the equipment so long as it
is satisfactory for this work. In most
instances, the party who buys for ren-
tal work knows the trade well enough
to purchase equipment at the lowest
possible prices. (Continued on page 50)

CHART FOR DETERMINING THE NUMBER OF ACOUSTICAL SOUND WATTS REQUIRED

To calculate the amplifier output required, the sound (acoustical) watts must first be determined for the room size, calculated
by referring to curve for the noise level encountered. Then using the efficiency of loud speaker, electrical power is determined.

February, 1939

FACTS ON FACSIMILE

Radio's method of printing a news-
paper in the home comes of age

Twenty-three radio stations are li-
censed to send out facsimile signals,
and two manufacturers are now turn-
ing out receivers. Thus, another off-
shoot of radio shows definite signs of
coming of age.

Two systems are now being used- —
that developed by W. G. Finch, and
the system worked out by ECA en-
gineers.

In the ECA facsimile, printing is
accomplished by a narrow bar which
pinches carbon and white paper
against a single spiral turn of raised
wire on a rotating drum. As the drum
rotates, the point of intersection be-
tween the printer bar and the raised
wire travels across the page in syn-
chronism with the scanning light spot
at the sending station, and, by means
of dots and lines, reconstructs a fac-
simile of the original graphic material.

Electro-chemical recording

In the Finch reception, a stylus
moves back and forth across the paper
emitting small electrical impulses
synchronized with each dot as scanned
and transmitted by the broadcasting
station. Each dot penetrates the
chemically-treated white coating on
the paper, removing the white and al-
lowing the black paper to show through
in black dots. A specially prepared
paper is necessary in the Finch sys-
tem.

Using the Finch system, the Cros-
ley Corp. is selling "for demonstra-
tion and experimental purposes" a
facsimile receiver known under the
patented name of "Eeado". Complete
with electric switching clock, printer
and receiver, it costs $150. If one
now has a radio delivering an output
of 5 watts or better, the printer may
be connected to it, saving some $60.
To stimulate interest, Crosley is also
selling its dealers a record player at
$36. Used in conjunction with the
Eeado, this player gives off sound im-
pulses, which are translated into fac-
simile reproduction by the Eeado.

In 16 cities

ECA has not announced its sets for
general distribution, but is using them
in areas where facsimile transmitting
licenses have been granted. On grant-
ing such a license, the FCC demands
that 50 facsimile receivers be pur-
chased by the station and distributed
for experimental reporting. So far,
twenty-three stations have received
these experimental licenses — fourteen
on the broadcast band and nine on the
ultra-short waves. The latter permits
broadcasting of facsimile at any time ;
but on the broadcast band, transmis-
sion is limited to the hours between
midnight and 6 a.m.

A list of the facsimile stations is
also on this page, and shows that al-

FACSIMILE STATIONS

Broadcast band-

—early morning hours only.

Location

Station

Freouency

Power

Owner

Fresno, Calif

.. KMJ

580 kc

1 kw

Mc Clatchy B 'casting System

Sacramento, Calif

. . KFBK

1490 kc

10 kw

Mc Clatchy B 'casting System

.. WGN

720 kc

50 kw

WGN, Inc.

.. WHO

1000 kc

50 kw

Central B'casting Co.

Detroit, Mich

.. WWJ

920 kc

5 kw

Detroit News

St. Paul, Minn

. . KSTP

1460 kc

25 kw

Nat. Battery B'casting Co.

Newark, N. J

.. WOR

710 kc

50 kw

Bamberger B'casting Service, Inc.

Buffalo, N. Y

. . WBEN

900 kc

1 kw

WBEN, Inc.

.. WLW

700 kc

50 kw

Crosley Corp.

. . WSAI

1330 kc

5kw

Crosley Corp.

Cleveland, Ohio

. . WCLE

610 kc

500 w

Cleveland Plaindealer

Cleveland, Ohio

. . WHK

1390 kc

1 kw

Radio Air Service Corp.

Nashville, Tenn

.. WSM

650 kc

50 kw

National L. & A. Insurance Co.

Newport News, Va

.. WGH

1310 kc

250 w

Hampton Roads B'casting Co.

Short Wave

. . W8XTY

8 metres

150 w

Evening News Assn., Inc.

. . W8XUF

8 metres

100 w

Sparks-Withington Co.

. . W9XSP

8 metres

100 w

Star-Times Publishing Co.

.. W9XZY

8 metres

100 w

Pulitzer Pub. Co.

Sargents Purchase, N. H.. .

.. W1XMX

8 metres

500 w

Yankee Network, Inc.

Long Island City, N. Y.. . .
New York, N. Y

. . W2XR

150,8,3 m.

1 kw

Radio Pictures, Inc.

. . W2XUP

8 metres

100 w

Bamberger B'casting Service

New York, N. Y

. . W2XBF

8 metres

1 kw

W. G. H. Finch

Cleveland, Ohio

W8XE

8 metres

50 w

Radio Air Service Corp.

W. G. H. Finch scanning the news
literally "hot off the press," via a Cros-
ley "Reado" using his facsimile system.

most every principal city in the coun-
try has facsimile coverage. Broad-
casts come from Fresno and Sacra-
mento, Cal. ; Des Moines, la. ; St.
Paul, Minn.; St. Louis, Mo.; Chi-
cago; Detroit and Jackson, Mich.;
Cleveland and Cincinnati, Ohio;
Buffalo, N. Y. ; New York City ; New-
ark, N. J. ; Newport News, Va. ;
Nashville, Tenn.; Sargents Purchase,
N. H.

Newspapers interested

In most cases, newspaper-owned
stations have taken up facsimile.
While not expected to displace news-
paper, it is thought that facsimile
will supplement it. Thus, papers are
vitally interested.

Eadio folk believe there will be a
comfortable market in facsimile dur-
ing 1939. Principal obstacles to be
hurdled are: speeding up reception
(now three feet per hour) and lower-
ing the price. As the demand in-
creases, it is expectd that a speeding
up of production will help cut the
price.

PRESS AGENT'S PAL

The much-maligned press agent has
a new helper, facsimile. Comes WOE
of the Mutual network with news that
its daily handouts are being "peep
swished" over 710 kilocycles at the
close of the station's regular pro-
grams.

Under a specially designed mast-
head, "WOE EADIO PEINT," exe-
cuted by WOE's chief engineer, J. E.
Poppele, the facsimile-casts also in-
clude photos of the station's activities.

Radio Today

FREQUENCY MODULATION STILL EXPERIMENTAL

Lack of transmitting facilities and technical diffi-
culties make immediate change-over impossible

Staticless radio reception recently
featured in the daily newspapers is
not going to revolutionize our present
radio broadcasting set-up overnight.
Unfortunate publicity in the press
has led consumers in some areas to ex-
pect that the new frequency-modu-
lated radio transmissions will be com-
mon and outmode present amplitude-
modulated broadcasts at once. Radio
dealers everywhere should explain to
their customers and prospects, that
the new type of radio transmission is
a long way in the future, and that for
the present it will only supplement
the standard broadcasts.

That frequency-modulated broad-
casts are an improvement cannot be
denied; that they eventually may be
the primary source of reception is
possible. However, with 40,000,000 ra-
dio sets in use and 765 broadcasting
stations on the air, nothing will cause
an immediate abandonment of our
present system that has served so well
for almost 20 years.

First of all the frequency modula-
tion takes place on wavelengths
shorter than ten meters (more than
30,000 KG). Use of these frequencies
restricts operation to the limit of the
horizon as with television. Antenna
installations are absolute necessities
and involve many of the problems
found in television.

No programs available

From the viewpoint of programs,
there is very little yet available on the
ultra-high frequencies. All transmis-
sions to date are experimental — com-
mercially sponsored programs are out.
Even if all existing stations licensed
for these wavelengths were to go on
the air immediately with sponsored
programs, most locations would have
no reception because of the horizon
limit. Persons living within range
of a transmitter would have to be
satisfied with but a single program,
for there are few cities having more
than one ultra-high-frequency trans-
mitter.

Dipping into the future, we find
that a chains of U-H-F transmitters
could easily be built. Persons within
the range of these stations will re-
ceive high-fidelity, static-free pro-
grams with a much wider volume

range than is now possible. Since the
transmission range is definitely lim-
ited to the horizon, there will not be
interference between various stations
as now exists in some locations under
the present broadcast set-up.

Engineers of the General Electric
Company recently completed a long
series of tests to determine the rela-
tive merits of frequency modulation
and present methods on the ultra-
short waves.

Increased coverage

They find Armstrong's system of
frequency modulation to be superior
in every respect. They state that com-
parable service to a given area can
be attained by Armstrong's system at
one-sixteenth the cost of present meth-
ods, and conclude with the statement
that "Frequency modulation is the
only system worthy of consideration
for use in an ultra-high frequency
network."

Mountain tops offer a new possi-
bility in broadcast coverage. In New
England, for instance, the Yankee
Network is constructing a 50 KW sta-

tion on a mountain near Worcester,
Mass. Such a station can push clear,
high-fidelity programs into Boston at
all hours of the day and night with-
out fading. Likewise the transmis-
sions will extend westward beyond the
Connecticut River, southward into
R. I.'s densely-populated districts and
northward to the southern N. H.
manufacturing centers. Today there
is no station on the broadcast band
capable of such coverage.

Another similar station is being
built atop of New Hampshire's fa-
mous Mt. Washington, and it should
bring fine reception to the northern
New England states.

It has been stated that these two
stations will bring 24-hour a day re-
ception to many outlying districts for
the first time.

It is possible that frequency modu-
lation may be applied to the audio
transmitters of television stations.
Since few receivers are in the field,
there is no reason why such a change
would cause much difficulty at the
present state of the art.

(Continued on page 56)

NEWSPAPERS BY RADIO FACSIMILE NOW AVAILABLE FOR HOMES

This boy is making up his own newspaper from a facsimile broadcast, received

and printed by an RCA set.

February, 1939

NEW RADIO MERCHANDISE TO SELL

Latest news of radio products from manufacturers

^^0

Admiral receivers

* 5-tube AC-DC superhet with
single-band tuning from 535 to 1,730
kc. 5-inch dynamic speaker — beam-
power output tube. Louvre-type
tone diffusers. Aeroscope loop-type
antenna does away with need for
antenna and ground. Model 161-5L
in walnut— list $9.95, 162-5L in
Ivory $12.95, 163-5L in onyx $15.95.

Portable-type combination AC op-
eration. Uses 5 tubes in superhet
circuit. 5-inch dynamic speaker.
Airplane-type luggage case. Self-
contained Aeroscope antenna. Com-
partment for records. Model 153-5L.
Continental Radio & Television
Corp., 3800 W. Cortland St., Chi-
cago, 111. — Radio Today.

2-purpose marine radio

* Marine receiver covering the
long-wave marine and weather re-
port channels. Tunes from 140 kc.
to 18.5 megacycles. Receives code,
voice and music. AC-DC 110 volts.
8 tubes, automatic volume control,
beat-frequency oscillator. Halli-
crafters, Inc., 2611 S. Indiana Ave.,
Chicago. — Radio Today.

Wireless record player

* Record player using no wires
to reproduce through radio. "Wal-
nut case, 13xl0%x6%. Crystal
pick-up. Home broadcast mike on
jack with built-in voltage supply.
Handles 12-inch record. Wholesale
Radio Service Co., Inc., 100 Sixth
Ave., N. Y. City.- — Radio Today.

RCA-Victor console

* 8-tube 3-band all-wave re-
ceiver with straight-line dial. Elec-
tric tuning for 6 stations. Victrola
push button and plug-in connections
for record player. Magic eye in-
dicator— vernier tuning. 12-inch
speaker. Model 98K2. RCA Mfg.
Co., Front & Cooper Sts., Camden,
N. J. — Radio Today.

Record cabinet

• Walnut or mahogany record
cabinet holding 100 records or 8
12-pocket albums. Furnished with
lock and key — drop type door.
Schloss Bros., 801 E. 135th St., New
York, N. Y. — Radio Today.

Short-wave preselector

* 5-band regenerative preselec-
tor for use with all receivers. Tunes
1,600 to 64,000 KC. Uses regenera-
tive stage with 1852 tube. Increases
image rejection and signal strength.
Filament transformer included.
Sold in kit or assembled. Brown-
ing Labs., Inc., 750 Main St., Win-
chester, Mass. — Radio Today.

Television receiver

* Sight and sound receiver us-
ing short-necked 5-inch tube. 16-
tube superhet circuit. Tunes to 44-
50 and 50-56 megacycle channels.
Table-type cabinet. Model l-F-5—
list $189.50. Andrea Radio Corp.,
Woodside, L. I., N. Y— Radio To-
day.

Lafayette sound systems

+ Line of sound systems from 5
to 70 watts output. Units available
in economy, standard, and de luxe
models. Attractive cabinets in
platinum gray. Sloping panel of-
fers maximum operating conve-
nience. Wholesale Radio Service
Co., 100 Sixth Ave., New York, N.
Y. — Radio Today.

Cowl antenna

it Universal bracket cowl an-
tenna that requires no drilling of
holes in car. Will not mar surface
of car. Installed in a minute with
a screw driver. Chromium plated.
Supplied in 5 models with lo-loss
lead-in. Insuline Corp. of America,
25 Park PL, New York, N. Y.—
Radio Today.

Radio Today

Wireless record player

* Model VA-20 wireless record
player with crystal pick-up. Modu-
lation type volume control, con-
stant-speed synchronous motor.
Pilot light. Plays up to 30-50 feet
from radio. List $17.95. RCA Mfg.
Co., Camden, N. J. — Radio Today.

70-watt sound system

* Unified sound system with 70-
98 watt output. Dual push-pull 6L6
beam power tubes. AVC and AVE,
cathode-ray output indicator. Choice
of 2 microphones. 4 heavy-duty 12-
inch PM speakers with baffles.
Clarion model C489A— list $299.50.
Amplifier only $139.02. Transformer
Corp. of America, 69 Wooster St.,
New York, N. Y. — Radio Today.

R. F. relay

•k AC-operated relay designed for
switching antenna from transmit-
ter to receiver. Handles up to one
kilowatt power. Double-pole, double
throw. % inch silver contacts. Alsi-
mag 196 insulation. Model 1000—
list $15. Gordon Specialties Co.,
1104 S. Wabash Ave., Chicago, 111 —
Radio Today.

Stancor antenna

•k Loop-type antenna for use in
antennaless receivers. Automat-
ically wound and is self-supporting
— requires no coil form. Low in
cost. Standard Transformer Corp.,
1500 N. Halstead St., Chicago, 111.
— Radio Today.

Portable tube checker

* Tubemaster tube tester that
handles newly announced loktal
and 35-volt tubes. Direct-reading
meter marked good-bad. Meter scale
and control panel indirectly lighted
from below. Leatherette carrying
case. Model 20-A— net $34.50. John
Meek Instruments, 164 N. May St.,
Chicago, 111. — Radio Today.

Battery-portable combination

* Phonograph-radio combina-
tion that is battery operated.
Spring-type motor for phonograph.
Plays 10 and 12-inch records. No
aerial or ground needed — no exter-
nal power supply. Luggage type
case with storage space for records.
Philco Radio & Television Corp.,
Tioga & C Sts., Philadelphia, Pa —
Radio Today.

Record carrying case

* Carrying case for 10-inch
phonograph records. Steel construc-
tion with re-inforced leather
handles. Smaller size holding 45
records lists for $3.50. Case for 100
records, $4. Chicago Sound System
Co., 200 E. Illinois St., Chicago, 111.
— Radio Today.

Weather-resistant
transformers

•k Transparent, elastic compound
protects transformers from climatic
conditions. Resists salt air, high
humidity and excessive moisture.
Known as "Tropex," adds 20 to 25
cents to cost of standard trans-
formers. Thordarson Electric Mfg.
Co., 500 W. Huron St., Chicago, 111.
— Radio Today.

Dual remote controls

* Universal-type remote con-
trols that permit operation and
tuning of receiver from 2 different
points. For autos, airplanes,
yachts, etc. Single-unit, pre-as-
sembled. Interchangeable gears.
Back controls for flush, recessed, or
surface mounting. Does not dis-
turb regular dash installation. Dual
Remote Control Co., 7228 Warwick
St., Detroit, Mich. — Radio Today.

Trim-mast auto aerials

■k Line of cowl type antennas
for auto radios. Chrome-plated
brass construction. Lug and unit
cord types. Improved lead-in with
swivel mounting illustrated. Allows
antenna lead-in to lie flat against
side of wall. Charles Avnet Co.,
156 Chambers St., New York, N. Y.
— Radto Today.

Smooth and automatic in operation, this Philco console wireless record player,

through your radio, reproduces 8 records in succession. Requires no fuss or

attention. Underneath, there's room for a complete record library.

February, 1939

Uncovering

PROFITABLE SERVICE JOBS

with your tube checker

"The success of selling lies in sens-
ing the psychological moment when
the prospect is in a buying mood, and
pressing home a sale at that moment,"
believes Bruce Burlingame, Supreme
representative for New York and sur-
roundings.

How can you discover that a pros-
pect is a prospect? There are lots of
ways, but I venture to say that many
a radio dealer and service man com-
pletely misses as many or more ser-
vice jobs per day, week, or month
than he gets. And the sad part of it
is that that sweet little lady "Oppor-
tunity" didn't bother to rap on the
door; she opened it and walked right
into your store!

Enter Lady Opportunity

How can you recognize her? Well,
she usually comes in with some tubes
to be "tested for free." This means
just one thing: The radio at home
doesn't play any more, or it sounds
terrible. Naturally the public thinks
first of tubes and out they come for a
free test and a lot of shopping for
price — unless you take "Lady Oppor-
tunity" by hand and steer, her right
back home — quick.

Let's look at it sensibly. Tubes may
be bad — but the radio may be bad, too.
Also, the best tube checker on the
market may not catch the particular
peculiarity of that tube in that socket
of that radio. Also, any set that has
been in service for any length of time
is usually filthy dirty and may have

been the death trap of cockroaches,
bugs, or even mice (it's happened lots
of times). A dirty set is leaky all over
and loss of gain and distortion can
often be traced to dust and dirt.

In any event, the customer is in
your store because the fadio "She's a
no seeing." And right here is a pros-
pect for your service shop.

Test the tubes carefully, cull out
those that are evidently bad and those
that are doubtful. Then lay out the
new tubes that seem to be required
and go to work.

Explain tubes

Tell your prospect that there are
some 14,000 different models of radios
in use designed by thousands of engi-
neers. Point out that every engineer
has his own ideas about getting the
most results out of a tube, and often
uses tubes in a manner that is not
standard; and hence for best results
the tubes should get a final test in the
set at home. Point out that possibly
something beyond tubes may be wrong
with the set, and it may be this defect
in the set that caused the tubes to go
bad.

Suggest and sell the idea that you
can check the set and make sure it
is correct in all respects if you take
the new tubes to the home, that at
that time you can give an honest opin-
ion as to whether some service on the
set won't put it in shape to play as
sweetly as it did when new.

Take "Lady Opportunity" by the hand when she comes in for a free tube test.

With customer in the shop, you are in a position to sell your ability, your fine

equipment, and the need for inspecting the radio set. Shop pictured is that of

Gilbert Titcomb, located in northern Maine at Fort Fairfield.

Remember that the customer owns
that set and paid for it with his own
cash. It is his, and at one time he
liked it. He would like to like it again.
So sell him the idea that you are the
boy who can make it really perform if
more than just tubes are at fault.

Practice this idea, starting right
now on the next customer that walks
in to have some tubes tested. You
will soon develop a smooth sales story
that will click, and I know you will be
surprised how many shoppers you can
turn into your customers — at a profit
to yourself.

Bear in mind that a tube checker is
just that: a checker. It is not an abso-
lute test, no matter whether it is an
emission type, a mutual conductance
type, or what have you. All service
men's and counter-type tube checkers
are based on compromises due to the
fact that the service man can "iily af-
ford about $50 tops for one. This can-
not compare with lab and factory pro-
duction testers running to hundreds of
dollars.

However, a good standard lube
checker has a high "honesty" factor.
That is, it will give both the customer
and you better than a 90 per cent
break, and if all our problems came
out that good we would all be Fords
and Rockefellers.

Stop shoppers

So, bearing in mind that a good tube
checker is honest, that your customer
is in trouble when he calls on you, that
any set is better for even just a clean-
ing, and the bulk of them do need
some work done on them, go to work
right there and sell a service job. Stop
many a shopper from shopping, and
not only sell that sale of tubes right
there, but get that service job, too.

A tube checker properly worked
with a well planned and developed
sales story behind it has a crystal ball
beat seven ways for turning hopes into
present profits. Don't wish for the
death of your chiselling competitor.
It's up to you to stop the shopper, turn
him into a customer while he is in
your store and wants his radio to play.
And you get some more work for the
shop.

It can be done; it is being done.

Swell seller-upper

A tube checker is the swellest "sell-
er-upper" there is if you will turn this
suggestion into action.

And take this as a red hot tip —
never sell or . replace a 25Z5 in an
AC/DC set without first checking the
first filter condenser in the power
pack. The failure of this condenser
accounts for nearly 50 per cent of the
claimed defects in a 25Z5 or similar
tube. Every time you get a call for a
25Z5, a service job is on tap. Grab it!

In concluding, Mr. Burlingame
points out that a "wish" bone never
replaced a back bone. You can't get
business by wishing for it. You have
to turn every sales opportunity into
a sale, and your tube checker is really
wired for sound. It announces to you
the presence of "Lady Opportunity"
every time she walks into your store
for a "free tube test." Greet her, cul-
tivate her, make her turn hopes into
profits.

Radio Today

^^ Radio Engineers of the Future

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Typical Science Class at
New York University
attending lecture with
demonstrations on
Raytheon equipped
receivers.

3>2i

In the marvelously equipped educational insti-
tutions, like New York University, science and engi-
neering classes are taught with Raytheon equipped
apparatus.

These embryo radio and electronic engineers
are instructed with only the finest of equipment, and
such equipment deserves the stability and depend-
ability of performance contributed by Raytheon.

At New York University, receivers used for
demonstration before 2 1 science classes are equipped
with Raytheon Tubes.

Your customer's radio deserves the same quality
performance and you can provide it, without the
penalty of higher price, by always equipping with
RAYTHEONS.

Successful Dealers and Servicemen— those who
are in business to stay, are finding that RAYTHEON
tubes are their insurance of the best— for permanent
tube profits. And a wise investment. Yet they cost
no more than the second-best tube!

RAYTHEON

NEWTON. MASS. • NEW YORK • CHICAGO • SAN FRANCISCO • ATLANTA

"WORLD'S LARGEST EXCLUSIVE RADIO TUBE MANUFACTURERS"

February, 1939 21

NEW THINGS

Table-size radio

• Model GF-500. 5-tube receiver
with plastic cabinet available in six
color combinations. AC-DC. At-
tached antenna. Covers standard
and police broadcast bands. Has
4-inch permanent magnet dynamic
speaker. General Electric, Bridge-
port, Conn. — Radio Today.

Radio-phonograph

* Model 101, 5 tubes, crystal
pick-up, self-starting motor, radio-
phonograph switch, tone control.
Handles both 10 and 12 inch records.
Hand-rubbed walnut cabinet. Philco
Radio & Television Corp., Tioga & C
Sts., Philadelphia, Pa.— Radio To-
day.

Triumph tube checker

•k Tube checker for all tubes in-
cluding loktal and single-ended
types with filament voltages from 1
to 35. Uses emission- type principle
following R.M.A. recommendations.
Push-button selection of tube ele-
ments. Individual tests for shorted
elements. Stabilized line-voltage
adjustment. Roller-type index chart.
Model 430LX — counter or portable
—net $29.95. Triumph Mfg. Co.,
4017 W. Lake St., Chicago, 111.—
Radio Today.

Cowl antenna

* Telescope-type of brass and.
chromium-plated steel. Fits in car
between kick pad and side cowl.
Extends 50 inches. Shielded hous-
ing prevents motor noise. Installed
by drilling one hole on top and
opening kick pad. Antenna is in-
serted inside the car. Philson Mfg.
Co., 156 Chambers St., N. Y. City.—
Radio Today.

Push-button tuner

* Two-deck oscillator and an-
tenna condenser for six station but-
tons. Single-screw adjustment sim-
plifies station tuning. May be used
with permeability coil tuned or
trimmer tuned oscillator circuits in
three-circuit receivers. Greater sta-
bility, lower losses and minimum
capacity. Model CX-52. Sprague
Specialties Co., North Adams, Mass.
— Radio Today.

Parasitic Suppressor

Parasitic suppressor

* Unit for suppressing ultra-
high-frequency parasitic oscillations
in transmitters. A non-inductive
vitreous-enameled resistor is com-
bined with a choke. Measures 1%
inches overall. Introduces negli-
gible power loss at fundamental
frequency. Type P300. Ohmite Mfg.
Co., 4835 Flournoy St., Chicago, 111.
— Radio Today.

6-volt power supply

* A-B eliminator for battery-
operated sets which works from a
6-volt storage battery. Device sup-
plies iy2 or 2-volts for filaments
and B voltages of 45, 57, 90, 135,
180 at 40 milliamperes. Operates
7-tube set for 50 hours on one charge
of a 130 ampere-hour battery. Fits
into any radio that will accommo-
date 2 B batteries. Model J— list
$19.95. Electro-Products Labs., 549
W. Randolph St., Chicago, 111.— Ra-
dio Today,

Intensified cat-ray tube

■k Two metallic rings form an
electrode that steps up the bril-
liance of the five-inch tube. Im-
proved gun structure for better
focus and modulating characteris-
tics. Accelerating element cuts pat-
tern size only 18 per cent, instead
of 50 per cent when voltage is dou-
bled. Allen B. Du Mont Labs.,
Inc., 2 Main Ave., Passaic, N. J. —
Radio Today.

Non-inductive resistors

* Cement-coated power resistors,
non-inductive up to 30 megacycles.
73,200, 400 and 600 ohms in 80-watt
ratings for dummy antenna appli-
cations. Others from 10 to 80 watts.
Clarostat Mfg. Co., Inc., 285 N. 6th
St., Brooklyn, N. Y. — Radio Today.

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Morocco finished radio

* 5-tube AC-DC superhet tuning
540-1,730 kc. Automatic volume
control — full-vision dial with 5:1
vernier. Beam-power output tube.
I.F. wavetrap. Miracle tone cham-
ber— metal tubes. Embossed de-
signs in ivory, red, brown morocco.
Model CH-253— list $14.95. Emer-
son Radio & Phonograph Co., Ill
Eighth Ave., New York, N. Y —
Radio Today.

Table combinations

• Model 149 AT-CB. 5 tubes,
automatic tuning with 5 buttons.
Covers 540 to 18,100 kc. Louvre-
type speaker grille, self-starting AC
one-speed phonograph motor. Crys-
tal pick-up. Radio-phono motor
switch. Lists at $44.95. Without
push-button, 1-band, $39.95. Senti-
nel Radio Corp., 2222 Diversey
Pkwy., Chicago. — Radio Today.

Radio Today

P.M. speaker

* High-fidelity speaker unit for
installations where quality repro-
duction is desired. Unit handles up
to 20 watts. Permanent magnet
type field excitation. When used
with proper housing, the frequency
response is substantially flat from
60 to 10,000 cycles. Resonance
effects reduced by proper amount of
mechanical damping. Unit 9%
inches in diameter. Model 751A
in enclosure — model 750A unit only.
Western Electric Co., 195 Broadway,
New York, N. Y. — Radio Today.

De luxe portable

* Three-wave band superhet for
standard, short wave and European
long wave up to 2,000 meters. For
AC-DC 110, 160, 220 volts. Packard
record changer on phonograph for
eight 10 or seven 12 inch records.
Carries 14 discs. Crystal pick-up,
universal motor, built-in aerial.
Model "250-f, fabricoid, $165; 250-c,
cowhide, $179.50; 250-r, rawhide,
$199.50. Lehman Radio Salon, Inc.,
1013 Madison Ave., N. Y. City.—
Radio Today.

Sound system amplifier

• DX-18 amplifier, 10 tubes, 18
watts. Electronic tone corrector
for varying tone response to com-
pensate for room acoustics. Two
high and two low gain inputs, re-
mote control optional. Output im-
pedances of 2, 4, 9, 15 and 500 ohms.
David Bogen Co., Inc., 663 Broad-
way, N. Y. City. — Radio Today.

27-Inch dynamic speaker

* Specially designed for World's
Fair. Handles 85 watts. Voice
coil impedance 16 ohms at 400 c.p.s.
Outside diameter 16 in., depth 18 in.
Weighs 455 lbs. List price $500.
Cinaudagraph Corp., Stamford,
Conn. — Radio Today.

Radiart auto aerial

* Cowl antenna that mounts
under the hood, thus eliminating
objectionable drilling of body pan-
els. Telescopic and made of chrome-
plated rust-proof admiralty metal.
Plastic insulators. Model CB-1.
Radiart Corp., Shaw Ave. at E.
133rd St., Cleveland, Ohio— Radio
Today.

Personal radios

• Models WR165 M-I-W with five
tubes, super-heterodyne. AC-DC.
540-1720 kc. range. 6-1 vernier dial.
WR165-M in solid mahogany cab-
inet, maple finish. 165-1 in ivory
plastic, scarlet control knobs. 165-W
in walnut plastic. Size, 8%x51/£x
41/4. Westinghouse Electric Supply
Co., 150 Varick St., N. Y. City —
Radio Today.

Recording attachment

•k Recording assembly designed
for use with phonographs and com-
binations. Cuts standard acetate
discs. Operates with as little as 2-
watts driving power from amplifier.
Cutter impedance of 8 ohms
matches secondary of output trans-
former. Rek-o-kut lists for $39.50.
Upco Engineering Labs., 254 Canal
St., New York, N. Y. — Radio Today.

150 mil bantam tubes

* Line of glass bantam tubes
with half the usual current drain.
Used with small wire-wound resist-
ance in the chassis to replace
plug-in resistor or line-cord resist-
ances. Tubes the same as standard
types except for filament rating.
New types are 12A8GT, 12J7GT,
12K7GT, 12F5GT, 12Q7GT, 35L6GT,
50L6GT, 35Z4GT, 25X6GT, Arcturus
Radio Tube Co., Newark, N. J.—
Radio Today.

Loktal tube adapters

* Molded sockets and adapters
for new loktal tubes. Black bake-
lite or tan low-loss mica-filled bake-
lite. With molded-in-plate, retainer
ring mounting or an adapter plate
for replacement work. Adapters for
tube testers, wired and unwired.
Socket tops in different colors for
identification. American Phenolic
Corp., 1250 Van Buren St., Chicago.
— Radio Today.

Chairside radio with modern flair in styling with convenience of operation. Model
96E-2 by RCA-Victor is a 6-tube 3-band set selling for $69.95.

February, 1939

Philco distributors have just heard the full details of the new Philco All Year 'Round
program — sensational profit news for the Radio and Appliance Dealers of America. A
new, unified, twelve months plan of advertising, merchandising and sales. A plan that
creates new economies and new profit opportunities that have never been possible for
dealers before! Your Philco distributor is on the way home now bursting with the news
. . . the news of the radio models, the refrigerators, the air conditioners and all the other
products now brought together into one profit family. You'll hear it all soon. Before you
complete your plans for Spring profits, stop, look and listen to his story!

Radio Today

PHILCO RADIOS

New radio models . . . engineered and styled to put new life
into the Spring business of every Philco dealer . . . priced
to meet every purse. Stunning consoles in impressive new
cabinets. New Transitones in attractive table models . . .
every one approved by Underwriters' Laboratories. SAFE
for your customers' homes and children, SAFE to sell. New
portable radio and radio phonograph combinations —
naturals for Summer selling! New wireless record players

— a complete new line of sensational values in Philco Auto
Radios — yes, a ream of news for Spring radio profits!

And the Philco radio advertising campaign continues !
Full page ads in the nation's leading magazines, ads that
tell the news of the new models as well as the quality mes-
sage of Philco engineering. New promotional material is
ready for Spring sales campaigns. Your Philco distributor
will give you all the details.

CONSERVADOR REFRIGERATORS

Philco, the quality name in over 1 1 million American
homes enters the field of refrigeration! That, alone, is sen-
sational news! But not with just "another" refrigerator,
not with hidden features and laboriously created sales
arguments ... a refrigerator that is NEW, DIFFERENT and
BETTER . . . with a feature that is instantly seen, instantly
demonstrated and instantly appreciated. The new Conserv-
ador Refrigerator with the Inner Door . . . 26% more

quickly usable space . . . twice the convenience . . . and the
first refrigerator ever made where you really use, easily and
naturally, all the space you buy! A quality product with every
worth while feature of any good refrigerator — PLUS the
Conservador. And it's all backed with a complete, aggres-
sive national advertising, merchandising and promotional
campaign. It's part of the Philco All Year 'Round plan.
Your distributor will give you the whole story!

YORK COOL-WAVE AIR CONDITIONERS

York, leaders in air conditioning, and Philco, leaders in
appliance merchandising, combine to bring a new industry
to the Appliance Dealers of America. Now, at last, portable
air conditioning, as low in price a?id as easy to install as a
good radio! No technical knowledge required, no compli-
cated installations, no plumbing, no wiring, no alterations.
And now a complete line that fits any size room — enables
you to sell genuine air conditioning as low as $ 1 5 down.

It's the most sensational profit opportunity that has come
to the appliance dealer in years. Full profits . . . NO
TRADE-INS. A vast, untouched market is waiting, eager
to buy. The dealer that just skims the cream this season will
pocket a handsome profit. The plans are all ready . . .
York Cool- Wave is a big part of the Philco All Year
'Round program. Get the full details from your distributor
and get into this profitable business NOW!

PHILCO DRY BATTERIES

Store Traffic — that's what you want! And that's what Philco
brings the Radio and Appliance Dealers of America with
a COMPLETE new line of Philco Dry Batteries FOR EV-
ERY PURPOSE. Radio batteries, as always; but now, in
addition, dry cells for flash lights, door bells, ignition . . .
for every purpose. There is a tremendous demand for dry

cell replacements. They are quick, easy sales . . .they bring
repeat business . . . attract people to your store and give
repeated opportunities to sell higher-priced merchandise.
Remember — Philco brings to this field more than a
quarter-century of experience in building quality batteries.
Ask your Philco distributor for a catalog giving full details.

February, 1939

Dynamic testing — Part XII

ELIMINATING HUM IN AUDIO AMPLIFIERS

Practical step-by-step method for tracing
source of hum in radio sets and amplifiers

By Vinton K. Uleich, Managing Editor

When there is too much hum in the
output of a radio set, the dynamic
method of tracing it to its source is
most effective. Actual hum voltage
measurements in various parts of the
circuit are often misleading since the
serviceman seldom, if ever, knows just
how much hum voltage is normal.

Hum is introduced into a receiver in
several manners. The most common
is insufficient filtering of the B power
supply. Next on the list is a hummy
tube — generally with a leak from cath-
ode to filament. A third source is the
induction of hum voltages into the
signal circuits of the set. This latter
type often occurs when leads in low
level circuits are in close proximity to
the AC leads. While the actual in-
duced voltages may be low, after am-
plification through several stages the
hum reaches tremendous proportions.
In amplifiers having audio stage cou-
pling transformers, it sometimes hap-
pens that AC hum voltages are in-
duced into the windings of the trans-
formers— this is particularly true with
high-gain P. A. amplifiers using an in-
put transformer.

How to reduce or eliminate the volt-
ages naturally depends upon the way
in which the hum is introduced into
the receiver. If there is insufficient
filtering of the power supply, the obvi-
ous answer is to improve the filtering,
generally by increasing the capacity of
the condensers. Other times a nominal
amount of filtering is used in the

power supply, and hum bucking be-
tween the stages is employed to cancel
the small amount of remaining hum.

Hummy tubes generally are discov-
ered on the tube checker, although in
some instances it might be necessary
to substitute new ones.

Principle of hum bucking

Fig. 1 illustrates the principle of
hum bucking in the stages. A small
amount of hum from the filter (after
the field or choke) remains and is fed
into the plate circuit of the first audio
stage. This hum is passed on to the
grid of the output stage as shown in
1-A. As an example, the induced volt-
age via the plate circuit of the first
audio stage is one volt. The voltage
amplification of the output stage be-
ing five, means that an output hum
voltage of 5 volts is produced by the
tube.

However, the plate supply for the
output tube is not filtered so well as
that fed to the first audio tube — in
this instance 5 volts hum is introduced
into the plate circuit of the output
tube.

Both the 1 volt and 5 volt hums are
in phase when they leave the power
supply. But when the 1 volt hum is
amplified to 5 volts as shown in Fig.
1-B, the phase of the voltage is changed
by 180° because of vacuum tube action.

In Fig. 1-C the two 5 volt hums are
shown 180° out of phase. Note that
when they are added, the resultant
hum is zero. This method of hum

canceling is used quite often — although
actually, the cancellation is seldom
complete. By employing such circuits,
the cost of the filter is reduced since
a less effective one is needed.

Hum bucking coils as used in dy-
namic speakers operate on a similar
principle. The hum introduced by the
field cancels that introduced to the
voice coil via the output stage.

Stage-by-stage analysis

The first step in the stage-by-stage
hum chasing is to short the input of
the output stage. Push-pull stages are
quickly shorted by connecting the
grids together, if transformer coupled.
Or both grids may be grounded di-
rectly if the grid is at ground poten-
tial for DC. If the grid is at a nega-
tive DC potential, the grounding for
AC voltages may be effected by con-
necting a large condenser across the
grid input circuit. Single-ended stages
are likewise grounded as shown in
Fig. 2-A and 2-B.

If when the input of the stage is
shorted, the hum decreases, it means
that the source of hum is previous to
that stage. If the hum increases, then
hum cancelling (of insufficient value)
is being employed in two or more
stages. If the hum remains the same,
the hum source is in the same stage.
Hum in the same stage may be caused
by insufficient plate supply filtering,
insufficient grid filtering if negative
bias is used as in 2-A, or improper
poling of the speaker circuits.

Fig. 1. In A the hum introduced in the
grid and plate circuits cancels out when
hum voltages are in proper relationship.

In B the process of hum amplification
by the tube is shown. When amplified
the hum is reversed 180° in phase.

Part C shows how the amplified grid
hum which is 180° out of phase with
the plate hum, reduces hum to zero.

Radio Today

Fig. 2. If the hum decreases when the
input is shorted, then the hum is in
a previous stage. If the hum level
remains the same, it is being intro-
duced in the stage under consideration.

A quick method of checking proper
polarity of the voice coil and field
coils is to short the primary of the
output transformer as shown in Fig.
3-A. Where pentode tubes are used,
merely connect the screen and plate
together at the socket. When the pri-
mary is shorted, the hum output of the
set should increase or remain the
same, when the coils are properly
poled. If the hum decreases, it means
that either the field or the voice coil
connections should be reversed. Often
a substantial reduction in hum output
can be obtained by properly poling the
field and voice coils. This is of par-
ticular importance when replacing the
speaker, cone, output transformer, or
field coil. (Naturally, if no objection-
able hum is present, it is rather use-
less to make such a test.)

Hum due to insufficient filtering of
the grid bias supply is checked by
connecting additional capacity across
the bias supply source as illustrated in
Fig. 3-B. A decrease in hum means
that more filtering should be em-
ployed. Either an increase in the fil-
tering resistance or condenser, or
both, may be necessary. Care should
be taken that the total grid circuit
resistance does not exceed that rec-
ommended by the tube manufacturers
for the tube employed.

Checking hum-bucking circuits

Should it be found that the hum is
in the previous stages, the same tests
are made for these stages as have
been outlined for the power output
stage, except for the poling of the
speaker.

When hum canceling is employed, it
may be necessary to adjust the amount
of induced hum stages to effect a more
perfect balance. If it has been deter-
mined that hum bucking is employed,
and it is of insufficient value in the
previous stages, it can be increased by
decreasing the value of the plate cou-
pling resistor in a resistance-coupled
stage. Also the filtering to the stage
might be made less effective so as to
increase the hum bucking voltage.

On the other hand, too much hum
bucking voltage introduced in the
voltage amplifier stages, is evidenced

by a decrease in the hum when the in-
put to the output stage was shorted as
in Fig. 2. This is treated similar to
the case where no hum-bucking is
used, but when the hum is introduced
in a previous stage. The plate cou-
pling resistor can be increased or the
filtering of the power supply can be
increased.

In many sets hum is kept at a low
level by restricting the bass response
of the receiver. Servicemen can em-
ploy this same method that the manu-
facturers sometimes use. Of course,
the tone of the set will be affected.

Induced hums

Induced hum by coupling of cir-
cuits or components is traced to the
stage in the manner described previ-
ously. Hum picked up by a trans-
former is determined by opening the
primary at the B plus connection.
When hum voltage from the power sup-
ply is isolated from the transformer as
stated above, the hum will decrease if
it comes from the power supply. If
the hum does not decrease, it means
that it is being magnetically induced
into the transformer. This induction
may be reduced by relocating the trans-
former or turning it at an angle.
Sometimes magnetic shielding is a
satisfactory solution.

Hum that is induced into the wiring
may be cured by moving the hot leads
to a position where the induction is
reduced. Or the hum induction can
be decreased by shielding the leads.
Generally speaking induced hum is
not obtained in a receiver unless major
changes have been in the receiver.

One receiver that wTas brought into
Radio Today's laboratory had a bad
hum that was caused by induced volt-
ages into a stage coupling transformer.
It seems that a universal replacement
had been used and the core was in a
different position than that originally
used. Since the transformer was near
the speaker field coil, a large amount
of hum was picked up by the trans-
former. Changing the angle of the
transformer reduced the hum. but it
was impossible to mount it in such a
position. Simplest and cheapest solu-
tion was to use an exact duplicate unit,
which proved satisfactory.

If hum chasing is done on a stage-
by-stage basis, listening to the output
as various parts of the stage are
shorted out or changed, it will be
found quite simple and quick, On the
other hand, absolute measurement of
hum voltages may be found to be con-
fusing. As in the other tests de-
scribed in dynamic testing, a check
under actual operating conditions is
most practical.

FIRST AID FOR SICK RADIOS

Lee Houseman of the Dallas Radio
Hospital has sent a snappy red and
white "ambulance" whirling through
the Texas city's streets for the. past
five years and has found it a smart
business builder. Replete with med-
ical cross, instruments, but racks in-
stead of the usual stretcher, the first
aid wagon arouses lots of comment.

A smartly-dressed "doctor" leaps
out, diagnoses the ills of the ailing
receiver. If nothing serious is wrong,
the medico gives first aid on the spot.

Otherwise the "patient" is hauled off
to the hospital for a major operation.
The ambulance can't be confused with
one for humans because it is simply
a sedan painted and doctored up ap-
propriately.

SERVICE COST RECORDS
IMPORTANT

The need for keeping accurate rec-
ords of expenses and income is far
more important than most servicemen
realize. If every serviceman figured
out how much it costs him to do busi-
ness, it is likely that much of the cut-
throat price competition would cease.
No man wants to do business at a loss,
but many servicemen in their anxiety
to get the work quote prices far below
a fair profit, only because they do not
know they are losing money.

Everyday we hear experiences of
how servicemen quote a price about
half of their actual cost — and these'
same servicemen after being shown
how they are losing money, are willing
to charge a fair price — what's more
important, they get it.

In order to help the serviceman
keep acquainted with his operating
costs, Radio Today is conducting a
survey of service costs and profits.
Each questionnaire that is submitted
will be individually figured and the
participant given pertinent data con-
cerning his business. A questionnaire
form was printed on page 35 of the
January issue. If you wish to partici-
pate, please do so at once.

Serviceman Robert Leslie of Ontona-
gon, Mich., wrote us as follows when
he submitted the operating figures for
his business: "I run a one-man busi-
ness and would have been in the red
badly, if I had not followed your ad-
vice in Radio Today. I now sit down
and keep track of every hour and
charge ?2 an hour on every radio I
service. And had I taken Radio To-
day five years ago, I would be able to
have a nice little bank account now."

Fig. 3-A. If the speaker field and voice
coil are properly poled, the hum will
increase when the primary is shorted.

Fig. 3-B. If the hum decreases when
the bias supply filter capacity is in-
creased, then the hum occurs in that
circuit.

February, 1939

THE STANDOUT LINE FOR '39!

Here are two proofs that this year it's RCA
Victor for volume. The "Pick-Me-Up" is
the perfect answer of RCA Victor to the
universal wish for a really portable radio.
The table model below is another stand-
out. Every one of the new RCA Victors is a
standout for styling . . . for performance . . .
for prices... for features. More than ever it
will pay you to push RCA Victor in 1939-

• • •

(Right) RCA Victor "Pick-Me-Up" Model 94BP4
literally sells on sight. People go for the idea of
a set that plays anywhere, without any wiring.
Has a powerful Superheterodyne circuit. Smartly
styled, airplane luggage type cabinet. Covers
complete domestic band. Easy-
reading clock dial. Price includes |$ O 2 50*
batteries

(Left) RCA Victor Model 96T4 offers you many
standout sales features including Electric Tuning,
Domestic and Foreign Reception, Police Calls,
2-band Clear Vision Illuminated Dial, 6 RCA Vic-
tor Tubes, Magnetite Frequency-Locking Trans-
formers and Automatic Volume Control. Works on
both AC and DC. Has handsome
ultra-continental style cabinet in
dark, hand-rubbed lacquer finish.

2995

• • *

•All prices f.o.b. Camden.N.J. subject tochange without notice
Listen to the Magic Key every Sunday, 2 to 3 P. M., B. S. T., on

the NBC Blue Network.
For finer radio performance . . . RCA Victor Radio Tubes

/%& 1/ictot.

RCA Manufacturing Co., Inc., Camden, N. J. A Service of the Radio Corporation of America

PAYS TO GO

Only RCA Makes
and Does Every-
thing in Radio
and Sound

Now everybody can listen _"*

THE UTTLE RADIO
WITH THE BIG NAME!

...at the lowest price

, RCA Victor history.

5 Beautifm »
Mo«/e/$.C°/0red

n— aCar;ccab'

Other ffl°,!' S3-95«.
Vaf'"erF „f ~.elf 'a a

andSZ7.j,i.5W-95-,

LITTLE NIPPER

STANDOUT SALES
FEATURES

4 Powerful Superhetero-
1 dyne Circuit

^ETectro-dyuamicSpeak-
^ er

4 AC-DC Operation

5 Built-in Antenna

c Automatic Volume Con-

*"> trol

Thedesireforalitderadioissweep-
Theaesi ,p plewantag<W

"^^URCAVic'orLittleNip-
pers_the little rad.ownh the b^S

name-offering outstanding per
formance-atamazinglylowcosd

.pncesf.o.b,Camden,suWe-o.^re

rotrcen-RCAV^Radio Tubes.

^^^^ r« Ine Camden, N. J.

Only RCA offers
the Public Accep-
tance that means
bigger profits for you

Counter type RCA Tube
Tester, Stock No. I56-A
net price, $37.95. Also
available inearryin^case
for portable use as Stock
No. 156— net price, $39.95

This great new RCA Tube Tester
helps you sell tubes! Proof of this is
seen in the statements made by a
serv.ce man in a recent letter to us:

iupe i ester I have noticed a very substan
tial increase n my tube sales . 3u

hSiafSneh;CtaubeT"y ^ ActUa%^ -lis

RCrTubflyTestPloeffI0 WOfk' the °ew
standing feaSelatlw'cS^ ?T
from your RCA parts XtrXto, det3llS

February, 1939

RCA Victrolas . . . and Victor and

Bluebird Records — The Fastest

Growing Field for Your Sales Activities

Stock Victor and «»ebird

to -> — "0,nal Xut U's only *•
chaudiring «orU ■• • ^ has only

beeaBCtatched."« „ sales! The

in the world «« e;* Victor Record

o^rORO SOCIETY OFFER

,25.95 y'^Zi Record.-/- *"•»

"? ,.llC)S(WPrrt

^vki«-u A"amucbi,d

■>""dECr«. "...»-

„_- -— "" 8b,PB, ».liUleotno

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C,7StaI Picf r' Fcath«--touch

«adio has r, • 'o-tuhc

8»<a.io„8p?CtncTu"-g<or

' Jn) Victor or Rl i .
Records, «2on '°rB'"cbir<l

Record Society „, i V'Ctor
and RCA v; . embe"'"ip,

W.la„» Mal,08»»y. J36S.00.

• *35500*

A»J8SdiV'CTROtAU-,I2

;™'Thi8hand9o^-d.„enterta.o

F<-"".cr.,ouch Crv™aVpWe ™ode' h»a
^'"^^io^ ^c radio. Price
B'»ebird RC0ord8 ';f«»y Victor or
fi20» «ubScriptioa Z"""* ch»"«.

j™"~o ™s^fr ""•*•"-—.

TtCAMcZbo&t,

A SERVICE OF THE

RADIO CORPORATION

OF AMERICA

COMBINES RECORD AND RADIO ENTERTAINMENT

It pays to sell a product that
insures high quality and fine
performance. Because then
you need not worry about
expensive call-backs or dis-
satisfied customers.

Get behind RCA Radio
Tubes — take advantage of
the excellent quality built in-
to these tubes by the world's
most famous tube engineers
— take advantage of the fine
promotional helps and ad-
vertising that RCA offers.
You will make more money.

Listen to the MagicKey of RCA every Sunday,
2 to 3 P.M., E.S.T., on NBC Blue Network.

Over 325 million RCA Radio Tubes have
been purchased by radio users. In tubes, as
in radio sets, it pays to go RCA All the Way.

February, 1939

PROFITS IN DISCS

Specialized promotion on
records highly successful

Consistent promotion of records
and combinations has made it pos-
sible for the Hamman Music Shop,
206 N. Liberty street, Baltimore, to
develop and build up a large record
and combination business. It has be-
come a recognized retail leader in
the record field.

At first a small section on the first
floor was given over to record ac-
tivities. But with the recent growth
in record activity, the Hamman
store decided to open a new depart-
ment in which would be featured
records, such accessories as needles,
and also lower-priced combinations.

The record department was con-
structed in the basement and air-
conditioned by a three-ton Carrier
weathermaker having a duct system
leading to eaeh of the six sound-
proof demonstration booths. Custom-
ers can adjust a manually-operated
exhaust and intake grill to suit them-
selves. The exhaust completely elim-
inates smoke in the booths.

700 safes a day

Since the opening of this depart-
ment about a year ago, the store
transacted more than 25,000 cash
sales, or an average of more than 100
a day. These sales do not include the
larger combinations which are sold
through the radio department located
on the first floor. Such a volume of
over-the-counter sales in a year is an
enviable record to hang up.

Hamman's Music Store always ef-
fects a tie-up with the frequent RCA
Victor record promotions and ad-
vertising. In addition the store has
arrangements with two of the major
broadcasting stations in Baltimore
for "plugs" during morning spot pro-
grams. In these "plugs" the listeners
are informed that the newest and lat-
est in records such as they have been
hearing can be obtained at Hamman's
Music Store.

Complete stock

The store sells all leading makes of
records, including Decca, Brunswick,
Columbia, Vocalion as well as the
RCA Victor line of albums, Bed Seal
and Bluebird records. A complete
stock of popular recordings and
classics is carried, particularly the
"Hit Parade" numbers, which are in
greatest demand. A daily check is
kept on the stock to make sure that
the store is not out of any favorite
record. The perpetually complete in-
ventory enhances the good will of the
store, for at all times they have just
what the customer wants.

Custom-built combinations

Hamman's carries leading makes of
combinations, including the Magna-
vox and Ansley. The latter can be
had in custom-built cabinets and of
special woods.

Many customer; s, particularly
women, desire a combination in special

woods and colors or color schemes to
harmonize, blend or match with the
furniture in the room for which the
instrument is intended, states Fred B.
Hamman, Jr., record manager. This
service we can render with the Ans-
ley, and we enjoy an appreciable vol-
ume, which supplements our large
sales in leading brands.

The special air-conditioned depart-
ment has been a big help in boosting
sales, particularly of records. The six
sound-proof booths, each of which has
comfortable accommodations for four
persons, makes it possible for cus-
tomers to spend as much time as they
wish hearing the newest recordings
without feeling rushed in any way.
The major portion of the record busi-
ness enjoyed by Hamman's is with
the youth of today, who have gone
"swing" in a big way.

"NEVER'S" FOR RECORDS

The newcomers among the record
fans are asking dealers for advice on
how to keep their discs in good shape.
Here's a set of practical rules:

1. Never handle the recorded part
with your fingers. Your hands have
perspiration on them at all times and
this should never get into the grooves.

2. Never leave your records in a
damp place. They are subject to mil-
dew.

3. Never leave them near a fireplace
or a heater, as they will warp easily.

4. Never keep them where they can
collect dust.

These rules are suggested by Peter
Grey, Inc., Thirteenth Ave., at 2029,
Oakland, Calif., maker of Kacti
needles.

TOUR SELLS DISCS

RCA dealers are urged to time
their record promotion with the mu-
sical tour of Benny Goodman's swing
band. Appropriate newspaper and
program advertising, window and
store displays, and spot radio an-
nouncements are being used to cash
in on the "King of Swing" publicity.

Half of the tour is already com-
pleted. Other dates are: Philadel-
phia, Feb. 10-16; Newark, Feb 17-23;
Detroit, Feb. 24-March 2; Indianap-
olis, March 3-9; Pittsburgh, March
10-16; Washington, March 17-23.

Hamman's stream-lined record department; 100 sales a day cross this counter,
as part of the new boom for recordings throughout the country.

Paul E. Southard, formerly an
RCA-Victor merchandise specialist,
was put in charge of distributor and
dealer operations for American Rec-
ord Corp. Mr. Southard entered the
record field 14 years ago with Bruns-
wick-Balke-Collander Co.

Radio Today

ELECTRICAL FLASHES

Optimism runs high — Many boxes need replacement
Crosley, Frigidaire, Gale, Philco announce refrigerators

PREDICT 25% RISE IN '39
FOR ELECTRICAL INDUSTRY

In 1939 the electrical manufactur-
ing business will be up about 25 per
cent, predict W. J. Donald and E. C.
Hughes of the National Electrical
Mfrs. Assn.

Low inventories in appliances, in-
creasing replacement sales and the
trend to more business in every line
are among the contributing factors.
More export trade to South America
and Europe is expected, and the new
defense program is certain to help the
industry, NEMA points out. Also,
many plants have stalled off modern-
ization as long as possible. Now, they
must buy.

MANY 'BOXES' NOW OBSOLETE,
RESEARCH MAN DECLARES

There is a very good market for the
replacement of obsolete refrigerators,
Arthur Hirose, director of research
for McCall's Magazine, told a Stewart-
Warner convention in Chicago re-
cently.

Mr. Hirose pointed out that a
Scripps-Howard survey of 16 U. S.
cities showed 26.4 per cent of the au-
tomatic refrigerators to be five or
more years old, and almost 15 per cent
to be seven or more years old.

No national figures exist on this sit-
uation, but an estimate at the begin-
ning of last year fixed 11,271,000 elec-
tric refrigerators in use. Since 12,-

1939 GALE REFRIGERATOR

398,476 refrigerators have been sold
since the beginning of the industry,
this indicates that only 1,127,476 re-
placements have been sold.

The McCall man cited the draw-
backs of the older boxes; small ca-
pacity, waste of electricity, in some
cases amounting to 2 to 7 times as
much as present models; inconve-
nience of arrangement, noisy opera-
tion. Any one of these is sufficient
reason for a replacement, Mr. Hirose
concluded.

LOW-PRICED SHELVADOR
ANNOUNCED BY CROSLEY

New name, new improvements

and features of the 1939 Gale

refrigerator.

New, low-priced Shelvadors, aimed
at the small income bracket, were in-
troduced by President Powel Crosley,
Jr., at Crosley Corp.'s recent conven-
tion in Cincinnati.

Known as the special line, the new
models augment the regular and de
luxe 1939 Shelvadors. At the same
time an 8-cubic foot model and a 7- ft.
super de luxe two-temperature model
were announced as additions to the
regular and de luxe lines.

The new special models come in
four sizes. They are priced at $99.50
for the 3-ft. model; $112.50 for the 4-
ft.; $122.50 for the 5-ft.; and $132.50
for the 6-ft. All have the Crosley
Shelvador feature, and are powered
with the hermetically-sealed Electro-
saver unit.

The Special Line rounds out the
picture for the Crosley dealer by giv-
ing him four complete series of fea-
ture and price brackets.

FRIGIDAIRE'S 'COLD WALL'

An entirely new principle to keep
vegetables and other perishables bet-
ter is incorporated in the new 1939
Frigidaires. Known as "Cold Wall,"
the device permits a humidity of 85
percent, and as high as 97 per cent
when the hydrator pans are used.

Not only does it keep food without
drying it out, but left-overs can be
placed uncovered in the refrigerator,

Frigidaire claims. Tests have proved
that this makes it possible to keep the
most delicate vegetables for days
without end, Frigidaire's engineers
say.

Other features are a new meat

Frigidaire's Cold Wall is di-
vided into 2 sections by a glass
shelf.

tender, designed to keep meat better,
and a simplified control known as
Unimatic. Improvements in the com-
pressor and in cabinet insulation have
cut operating costs 3 to 15 per cent,
the maker states.

MORE "QUICK SPACE" IN NEW
PHILCO REFRIGERATORS

From a nation-wide survey Philco
found the housewife's most pressing
need to be more space, quickly avail-
able with no groping. Evinced by this
fact, is the Conservador's new "inner-
door" which gives 26 per cent more
quickly-usable space by separating the
front and back of the refrigerator.
This places the foods the housewife
uses most often within easy reach.
The survey also showed the most
common foods stored in the refrig-
erator, and suitable space was pro-
vided for these.

The G-E 1939 spring road show
"Get Over Into Clover" will play one
night stands for jobbers and their
dealers in 50 key cities. The show is
made up of scenes played by profes-
sional actors and a motion picture.

February, 1939

6 Reasons for profit

IShelvadors provide larger sizes in all com-
petitive price levels.

2Shelvadors provide lower prices for equal
competitive sizes.

3Shelvadors provide 12 price steps of from
$10 to §20 a step.

4Shelvadors match or better all 1939 elec-
trical refrigerator refinements, improve-
ments, features and design advances.

5Shelvadors match or better all material spe-
cifications and craftsmanship in fabrication.

6Shelvadors match or better all operating
costs, load ratios and freezing performances.

PLUS that uncontroversial, unmatchable, exclusive, top appeal to all women — the SHELVADOR!"

Radio Today

the line for '39

.12 ways to make it

"REGULAR" LINE

COMPLETE REFRIGERATORS

MATCHING IN PRICE

THE "STRIPPED" LINES

OF COMPETITION

LB5-45
4V2 CUBIC FEET

$127.50*

LB5-55
51/2 CUBIC FEET

$147.50*

*•

rH _- 3

LB5-65
6V2 CUBIC FEET

$167.50*

LB5-80
8 CUBIC FEET

$194.50*

^DELIVERED AND INSTALLED . . . 5-YEAR PROTECTION PLAN $5,00 ADDITIONAL . . . PRICES SLIGHTLY HIGHER IN SOUTH AND WEST

THE CROSLEY CORPORATION powelcrosley, jr., Pres. CINCINNATI

February, 1939

NEW THINGS

Univex cameras

* Two 8-mm home movie cam-
eras Model C-8 features f:4.5 lens
and built-in optical view finder.
Equipped with sunshade — optional
interchangeable lenses. List $15.
The True-View model listing for
$9.95 has permanently mounted
brilliant view finder. Easier load-
ing, uninterrupted operation. Pow-
erful, quiet-running motor with
governor. Universal Camera Corp.,
46 W. 23rd St., New York, N. Y —
Radio Today.

Philco batteries

* Complete line of dry batteries
for every purpose. Units for flash-
lights, doorbells, lanterns, electric
fences, radios. Special units for
portable radios and mystery con-
trol. Standard, heavy, super-heavy
duty types. Philco Radio & Tele-
vision Corp., Tioga & C Sts., Phila-
delphia, Pa. — Radio Today.

Mica capacitors

* Transmitting-type mica con-
densers with very-low radio-fre-
quency resistance and losses. Cur-
rent range extended to include 30
megacycle band. Available in 17
capacities at voltages from 2,000 to
12,500. Cornell-Dublier Electric
Corp., S. Plainfield, N. J.— Radio
Today.

Uni-directional mike

• Microphone for all installa-
tions requiring uni-directional char-
acteristics. Increased sensistivity
through use of alnico magnets. Fre-
quency range of 40-10,000 cycles.
Impedances of 50 and 250 ohms.
Back cancellation of — 14 to — 20
DB. Output —61 DB. Model 77B—
list $130. RCA Mfg. Co., Front &
Cooper Sts., Camden, N. J. — Radio
Today.

High-fidelity receiver

* High-fidelity radio receiver in
kit form or completely wired. Tone
quality and flexibility of assembly
are featured. Speaker, tuner and
audio system may be located at
different points and remotely op-
erated. Furnished with Cinauda-
graph speaker. Pacent Engineering
Corp., 79 Madison Ave., N. Y. City.
— Radio Today.

Diversity coupler

* 3-tube unit. Selects strongest
signal combination of two aerials
through relay. Anti-fade benefits
on short waves. Kit form, $16.80;
wired, $19.95. Edwin I. Guthman
& Co., Inc. — Radio Today.

I.F. transformers

* Iron-core double-tuned band-
expanding I.F. transformer. Mois-
ture-proofed treatment of windings.
Other types for all purposes avail-
able in both air and iron cores, per-
meability and condenser tuned.
Consolidated Wire and Assoc.
Corps., 516 S. Peoria St., Chicago,
111. — Radio Today.

4-inch speaker

• Electro-dynamic speaker for
compact radios. May be used in in-
terphones as combination mike-
speaker. Unusually fine tone re-
sponse. Available with or without
output transformer. Model 45Y-4T.
Operadio Mfg. Co., St. Charles, 111.
— Radio Today.

Enclosed relay rack

* Type "C" deluxe single unit
cabinet for studios, broadcast sta-
tions and installations for sound
and radio equipment. Parmetal
Products Corp., 3529 41st St., Long
Island City, N. Y.— Radio Today.

High-range multi-meter

* Pocket-sized meter with ranges
up to 3,000 volts. AC readings ac-
curate with 5 per cent, DC within
2 per cent. Internal battery for
ohmmeter. Completely cased in
bakelite — test cables insulated for
5,000 volts. Weighs only 20 ounces.
Hammeter. Simpson Electric Co.,
5218 W. Kinzie St., Chicago, 111 —
Radio Today.

U.H.F. transmitter

* Crystal-controlled ultra-high
frequency transmitter for use in
141 megacycle aviation band. 10-
watt carrier rating. Crystal-con-
trolled superhet receiver available
for use with transmitter. Lear De-
velopments, Inc., Roosevelt Field,
Mineola, L. I., N. Y. — Radio Today.

Meter cases

• Housings for 2 and 3-inch me-
ters. Cases formed of crackle-fin-
ished steel — ceramic feed-through
insulators. Panels slope at 60° for
easy meter readings. List $1.50.
Bud Radio Co., 5205 Cedar Ave.,
Cleveland, Ohio— Radio Today.

Radio Today

Cable replacing tool

* Auto-radio remote cable tool.
Swedges .13 and .15 flexible shaft-
ings. Removes and replaces fit-
tings. Net only $7.50. Star Ma-
chine Mfrs., 1371 E. Bay Ave.,
Bronx, N. Y. — Radio Today.

Marine radio

* Two-way radio telephone outfit
for yachts and other small craft.
Capacity of 10 channels for Coast
Guard, shore, and ship-to-ship com-
munication. Operates merely by
lifting handset. Frequency selected
by single switch— no tuning re-
quired. Model 95. Jefferson Travis
Radio Mfg. Co., 198 Milburn Ave.,
Baldwin, L. I., N. Y. — Radio Today.

AC motor controller

* Multi-step speed controller for
AC motor permitting use of thermo-
stat or automatic switch. No mov-
ing parts. Custom built to motor
needs. Raytheon Mfg. Co., 144
Willow St., Waltham, Mass. — Radio
Today.

Webster-Chicago mikes

•k Crystal-type microphone with
output level of — 52 DB. Reproduc-
tion range from 40 to 10,000 cycles.
Model 1236.

Dynamic mike with Dural dia-
phragm. Output level — 56 DB. Fre-
quency response from 50 to 9000
cycles. High and low impedances.
Model 1245. Webster-Chicago, 5622
Bloomingdale Ave., Chicago, 111. —
Radio Today.

Irwin cameras

•k Imperial line of 16 mm. mo-
tion picture cameras. Magazine
loading. Single and 4-speed models
available. Convenient pocket size.
Footage indicator on magazine.
Built-in view finder. Supplied with
F:3.5 and F:4.5 lens. Priced at
$22.50 to $34.95. Irwin Corp., 27
W. 20th St., New York, N. Y.—
Radio Today.

Million signalyzer

* Device for indicating presence
of signal throughout all sections of
receiver. 4 input connections. In-
put capacitance of approximately 5
micromicrofarads. Three inputs on
AC and the 4th on DC. 4 6E5 tubes
as indicators — other tubes are 2
6F8 dual triodes, and one 76. List
$24.50. Million Radio & Television
Labs., 685 W. Ohio St., Chicago, 111.
— Radio Today.

Police radio antennas

■*• Auto antennas for police and
amateur short wave transmission
and reception. Side, cowl and trunk
mountings have low-loss porcelain
insulators and ceramic bushings.
Bumper type uses hard rubber.
4-section telescoping antenna ex-
tends from 3^ to 10 y2 feet. Non-
adjustable type has height of 8i/2
feet. Ward Products Corp., Cleve"
land, Ohio. — Radio Today.

At the right Wendie Barrie, RKO
screen star adds the feminine touch
to Stewart - Warner's Magic Key-
board receiver.

Foot volume control

* Foot-pedal type of volume
control for use with high impe-
dance contact microphones. Unit
wired as a "T" pad — up to 5 mikes
and controls can be paralleled and
fed into a single amplifier input
without interference between units.
Model FK— list $12. Amperite Co.,
561 Broadway, New York, N. Y —
Radio Today.

Custom escutcheon plates

* Line of plates to match all
cars from 1934 to 1939. 1939 special
Chevrolet plate permits installation
of any 1936-7-8 Delco or Chevie
radio in the 1939 cars. Plate is
heavy die-casting. Plates illustrat-
ed are 1939 Ford, Pontiac, Chevro-
let. Star Machine Mfrs. Co., 1371
E. Day Ave., Bronx, N. Y. — Radio
Today.

Auto antennas

•k Two new antennas provide
mechanical and electrical "sound-
proofing" for the first time. Metal
shields cover two mounting bolts to
eliminate noise pickup. Lists $3.35.
Hinge-type mounted antenna per-
mits tilting to harmonize with car
lines. 69 inches for increased
pick-up. Lists $3. RCA Mfg. Co.,
Camden, N J. — Radio Today.

February, 1939

Schematic diagram of new Philco battery portable set. Loop aerial is normally used for reception, but external antenna, if

needed, is coupled by a single turn to the tuned loop.

SERVICE NOTES

FORGET COMPETISH

Forget about your competitor and
his price cutting, advises serviceman
A. E. Rhine of New York City. Let
him take losses on his work if he
wishes — and soon he'll be out of busi-

ness. Rhine was very emphatic in
stating that the present low-income
level in radio servicing was not due to
lack of business, but due to service-
men doing jobs without obtaining a
profit. In fact, even if a serviceman
doubled his business, it would not be
possible to make a profit if he were
losing money to begin with. This is
because practically every cost in the
list of overhead expenses will increase
almost in proportion to the business
handled.

SERVICEMEN SELL
HIGH-FIDELITY SETS

New market for servicemen and
technically-inclined dealers exists in
the concealed installation of high-fidel-
ity chassis in homes and the replace-
ment of existing chassis when the
owner wants to keep the old cabinet.

The concealed installations are
ideally suited for new homes under
construction. Speakers can be built
into walls, amplifier hidden in a closet,

o o grcsaoDadQ! c ©

Model 440 "Test Master"

An all service tube and set tester.
Double-filament switching; screen
fluorescence and angle test; hot
cathode leakage test; high sensitivity
neon short-check; noise test; percent-
age scales; "good" and "bad" scales.
As set tester has six A.C. and D.C.
voltage ranges; resistance ranges
from 1 ohm to 100 megohms; four
milliamp ranges; six decibel ranges;
0-15 amp scale; neon
leakage test, noise
test, etc. Your price . .

Model

220

"Roto-

Ranger"

A finer tube
and set test-
er with con-
v e n i e n t
Simpson
Roto-Ranger
feature. Your price

$5900

$6275

vSAHtepj

the critical inspection of the
hard-to-please serviceman

• Are you the kind of man who makes
the air blue when equipment is not built
right? If so, you are the kind of a man
who will appreciate Simpson quality.

One inspection is all we ask. In any Simpson
Testing Instrument you will see that added touch
you have been looking for — in design, in work-
manship, in sturdiness. in finish, in practical con-
sideration of your on-the-job needs.

The Simpson line includes instruments covering
every requirement, but from the simplest to the
most elaborate you will find that every detail
expresses the practical insight and engineering
background of Ray R. Simpson and a group of
associates who have devoted their entire engineer-
ing careers to instrument development.

Some of the many types are illustrated here.
Ask for bulletins describing types in which you
are interested. See them at your jobber's.

SIMPSON

INSTRUMENTS THAT STAY ACCURATE

SIMPSON ELECTRIC CO., 5202 Kinzie St.. Chicago

Model 333

Tube Tester, smaii (only 7&

x 10 V2"). Light in weight (only 7 lbs.)
... at a remarkably low price. Tests all
tubes, including new Loctal and other
recently developed types. *,** * m*
Has double filament switch- $"^> S"
ing. ■*

Your price.

Model 230

The smallest A.C—
D.C. instrument on the
market, yet it contains
a sufficient number of
ranges for the experi-
enced man to do a
complete servicing
job.
Your
price.

$14

Radio Today

and the tuning unit located at a con-
venient point.

Pacent Engineering Corp. of New
York has just brought out a high-fidel-
ity receiver designed expressly for this
type of work. Using a band-pass tuner
of extremely compact dimensions, sep-
arate from the amplifier, it is possible
to have it in a small cabinet about the
size of the usual remote-control unit
or build it into any desired piece of
furniture.

For modernization work, the entire
receiver can be installed in the old
cabinet. These high-fidelity chassis
are the answer to the public's ques-
tion, "where can I get a new set for
the old cabinet?"

A tuned-radio-frequency receiver of
the band-pass type is available from
the J. "W. Miller Co. of Los Angeles in
kit form. This set features high fidel-
ity with sensitivity more than ade-
quate for local reception.

The Pacent receiver is obtainable in
either wired form or a kit to be as-
sembled by the serviceman. The kits
give the radioman an opportunity to
make an additional profit for the as-
sembly, which is quite simple.

While the market is not large in
numbers, those installations that exist
are generally very profitable.

PREVENTING FILTER AND RECTIFIER
FAILURE IN AC-DC RECEIVERS

Reports from the field show that
there is a tendency for filter condensers
and the rectifier tubes in AC-DC re-
ceivers to fail prematurely. As a re-
sult, the engineering department of
Stewart-Warner has investigated this
condition in collaboration with the
manufacturers of the tubes and the
electrolytic condensers, and has devel-
oped a simple remedy

It has been found that all makes
of AC-DC receivers are more or less
subject to this trouble which is due to
a peculiar power line condition. This
difficulty is not due to high line volt-
ages nor is it due to any fault in
either the tube or the condenser.

With certain line impedances, it has
been found that extremely high surge
voltages are developed across the filter
condenser, and as a result the con-
denser will puncture and thus this
causes the rectifier tube to fail. The
instantaneous surge voltages which
are developed may be as high as 300
volts, and occur only if the set hap-
pens to be turned off on a particular
part of the cycle.

Since this difficulty is due to a power
line condition, it is very likely to hap-
pen repeatedly in any one location. In
other words, if it happens once in a
certain customer's home, it is very
likely to happen again.

The remedy for this trouble is to
connect an inexpensive 50-ohm 1 watt

From The Successful
Servicing Laboratories of

JOHN F. RIDER

A Really New Instrument. New in Design — New in Performance.
Unequalled by any existing piece of equipment now available to the
servicing field! — A device as sensational in performance as The Rider
Chanalyst! Announcement of this new Rider instrument will be made
in next month's magazines. It will headline the news — it will be
talked about wherever two servicemen get together — don't miss it.

ThisNewDeviceWILLNOTTakethePlace
or Do the Work of The Rider CHANAL YSTi

So — if you do not already own a
Chanalyst get the facts on this
proven instrument which will cut
your trouble-shooting time to an
absolute minimum. Find out how
simple and easy it is to use the
Chanalyst for the location of de-
fects in receivers of all types and
makes. Send for the new illustrated
80 page (8V2 x 11") book. Get the
facts which will enable you to go
to your jobbers and demonstrate
the Chanalyst to yourself. Send the
coupon at right NOW] g I

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o«cf

SERVICE INSTRUMENTS, INC.

41 0 Fourth Avenue, New York City
Foreign Division— 147 W. 45th Street, N. Y., Cables— "Servicin'

February, 1939

THE CONDENSER

^enaction

OF 1938 . . .

R«

*£

»*■

-,»»

u&\

m
&

Putting a repair bench in his store window, where all may see what goes
on when a non-working radio is brought to him, has helped the service
business of David Landa's Universal Radio Service, Oakland, Calif.

SERVICING SETS

of 1939!

No wonder Sprague ATOMS —
the sensational new midget dry
electrolytics — broke all previous
sales records in 1938!

ATOMS are the smallest mid-
gets on the market. They bring
you the most honest-to-goodness
features at the lowest possible
cost.

ATOMS build up to higher
surges than any similar units.
They have lower leakage and
power factor. They're UNCON-
DITIONALLY GUARANTEED
against blow-ups. They're made
in more capacities than any other
midgets, more voltages plus a
complete assortment of dual
capacity units with common
negative leads.

ATOMS are self-supporting —
you mount 'em just like paper
tubulars. You use *em for any
replacement where you want real
efficiency coupled with real econ-
omy. Sold singly or in handy kits
of 6 or 12 units.

An 8 mfd. 450 Volt ATOM lists
at only 60c. A dual 8-8 mfd. lists
at only $1. Think of the money
you save !

WRITE for the SPRAGUE CON-
DENSER CATALOG detailing our
complete line for every radio

requirement.

SPRAGUE PRODUCTS CO.

North Adams, Mass.

SPRAGUE

ATOMS

"AiiaktUlt Midffiti of) -f)lt"

resistor in series with the connection
from the rectifier tube cathodes to the
electrolytic filter condensers. The
proper connection of the resistor is
shown in the accompanying diagram.
It is suggested that the serviceman
install such a resistor in all AC-DC
sets which come in for repair with
either the rectifier tube or the electro-
lytic condenser requiring replacement.
This resistor is being added to all fu-
ture production of Stewart-Warner
AC-DC radio receivers.

REPAIR BENCH IN WINDOW
INCREASES PROFITS

During the twelve years he worked
at other shops, David Landa noticed
that an obscure repair department
weakened the customer's ctonfidence
and offered considerable sales resist-
ance. So when he opened his own
shop, Universal Radio Service, in Oak-
land, Calif., Dave placed his neat, or-
derly repair bench in the front of the
store behind a spotlessly clean window,
for the following reasons:

1. To attract attention to the shop

by supplying so-called "action display."
This decision was made after observ-
ing window shoppers' reaction to ac-
tion displays and demonstrations.

2. People could see that there was
neither mystery nor secrecy to repair
work, but that it involved certain def-
inite operations, all of which take time.

3. To individualize the shop and fix
its location and business definitely in
radio owners' minds. With a clean
radio bench in plain sight, and a ser-
vice man at work, a definite picture is
presented that the window shopper re-
calls when his radio needs repair.

4. To remove any poor impressions
set up by shops with unsightly work
benches and test panels. Also to cre-
ate more confidence in the shop and
to elevate the trade to a higher level.

5. To make it possible for the cus-
tomer who waited for a repair job to
see that the many tests and operations
required much time — this to remove
objections for charges that might other-
wise seem excessive.

The "experiment" is no longer that;
it is a proven fact that such a "work
window" is a powerful magnet for
service sales.

Jaivette Tlotaru Converters

FOR CONVERTING D.C. TO fl.C.

ASK FOR BULLETIN 13-1

Janette manufacturing Company

556-558 lUestltlonwe Street eHicacfo. III. XL S.JH.

Radio Today

JL/clST ^•cl.Jl-I.*

— for advertising copy— for new
subscriptions starting with

the Big Double Issue in
MARCH

RADIO TRADE DIRECTORY

combined with

WORLD'S FAIR NUMBER

featuring

RADIO TODAY and TOMORROW— An
article of historic importance giving facts
about the FUTURE that every man in
radio wants to know.

RADIO TRADE DIRECTORY — Radio's
only complete Buyers' Guide. Used daily.
Has year-round life.

TELEVISION and other trends, impar-
tially discussed.

WORLD'S FAIR— An impetus to radio and
general business.

MANUFACTURERS' ANNOUNCE-
MENTS— Latest products in home sets,
portables, auto radio,combinations, sound
systems, parts, accessories and servicing
equipment.

EXTRA CIRCULATION— Coverage of all
radio markets, including dealers and ser-
vice dealers, jobbers, manufacturers and
broadcast stations.

RATES AND POSITIONS— No increase
in advertising rates. Positions alongside
or close to directory listings if reserved
at once.

H^H^^H

CALD WELL-CLEMENTS, Inc.

480 Lexington Avenue
New York, N. Y.

THESE TUBES
PAY FOR THE
EQUIPMENT
YOU NEED!

ARCTURUS
EQUIPMENT DEAL!

The Arcturus Equipment Deal brings you an
almost unlimited variety of the newest store and
shop equipment . . . practically FREE! It enables
you to make your shop more efficient, absolutely
up-to-the-minute ... it actually gives you EXTRA
PROFITS in the form of valuable equipmentl

NEW EQUIPMENT . . . PRACTICALLY FREE!

You'll find the Arcturus Deal gives you more
for your money than any other. Lower Down
Payments, Low Tube Requirements. Immediate
Delivery — and only Standard Prices for tubesl

Send for details, and your FREE copy of the
ARCTURUS DEALER HELPS folder. See how
simple it is to get new equipment — how your
purchases of Arcturus Tubes actually pay for it —
how Arcturus Cooperation helps you selll

NEW TUBES

NEW PROFITS!

Arcturus recently introduced several new tube
types . . . more are on the way! These, and the
famous Arcturus GT "MIDGETS", will further
increase the huge replacement market now open
to Arcturus dealers. Cash in on itl "Go Arcturus"!

MAIL THE COUPON!

ARCTURUS RADIO TUBE CO., Newark, N. J. T,E

Without cost or obligation, send my copy of the
ARCTURUS DEALER HELPS Folder and details
of the ARCTURUS EQUIPMENT DEAL.

Name

Street

City State

□ I am a dealer □ I am a serviceman. My

jobber is

Fir wut MnenieiM tail »upon eia be puted <a t laaay Mitiiri'

SERVICEMEN'S GROUPS ACTIVE

Business methods improved
Definition of a serviceman advanced

RSA CHAPTER NEWS

New RSA chapters were formed in
Fort Wayne, Ind., and St. Joseph,
Mo., and a foundation laid for one at
Pekin, HI.

The Oklahoma City chapter, to
keep local members up-to-date, is
sponsoring a short course at Okla-
homa U., conducted by manufactur-
ers' engineers, on new circuits.

Staten Island, N. Y., to furnish
complete stock facilities for all mem-
bers, has adopted a cooperative plan,
each stocking certain types of special
parts and drawing on each other
when these parts are needed.

From Detroit, Mich., comes the
definition of a qualified RSA mem-
ber. He must: Be a full-time ser-
viceman, have a business set up, pay
the taxes imposed on businesses, have
commercial phone listings, and pass
an oral and written business and
technical examination.

Philco "Mystery Control" lectures
were given at New Hampshire by Mr.
Morse, and at Binghampton, N. Y.,
by local Philco distributor, while the
Rider Chanalyst was explained at
Boston, Mass., Hartford, Conn.,
Jamestown, N. Y., Tulsa, Okla., and
Steubenville, O., meetings.

Speakers were active at other RSA
chapters with Mr. Mohaupt speaking
at Detroit on "Signal generators and
frequency modulation" and at Lans-
ing, Mich., on "The construction and
use of the oscilloscope." Mr. Hicks,
of Thordarson, addressed Pontiac,
Mich., and Springfield, HI., service-
men on transformers.

RSA publicity was furthered at
Greenbay, Wis., by plans for coop-
erative advertising by members
through press and radio, while the
Chicago, 111., chapter is now publish-
ing a house organ. Mr. Miller of New
Jersey also made a publicity talk
over WHBI Newark.

Bert Eilers of Duluth and Noel

Granger of St. Paul, Minn., reported
to their chapters on visits to the na-
tional office of RSA.

St. Paul decided to continue their
poor credit lists, and fixed a scale of
prices for auto radio installations.

Washington, D. C, discussed the
possibility of standardizing all ser-
vice prices and doing away with free
service and estimates.

Newark, N. J. — Radio servicemen
here have just warred on a firm adver-
tising "Any radio repaired for only
75 cents, one year guarantee." News-
paper ads, handbills placed in mail-
boxes and billboards were used by
this advertiser. A strong letter of
protest to the newspaper publisher
brought a satisfactory change in
copy, and a complaint was next made
to the postal authorities. Chairman
Carl Rauber also lodged a complaint
with the police department racket
squad. As a result, the matter will
be presented to the Essex County
grand jury.

INDEPENDENT ASSOCIATIONS

Servicemen of Fresno, Cal., have
formed the Associated Radio Service-
men in an attempt to rid themselves
of non-profit services and to increase
their technical knowledge. Jack
Schiefer was elected president, and in-
formation about the organization can
be obtained from Earle Bancroft, 151
Howard St., Fresno, Cal.

Hudson County Radio Servicemen's

Assn., 22 Liberty Ave., Jersey City,
N. J., has organized with Martin Seel
as chairman; Joseph Potocki, sec'y;
Charles Wolf, treas., and Edward
Turnier, publicity. The public is being
educated to use only qualified ser-
vicemen. The members of the or-
ganization no longer extend discounts
to unqualified servicemen for the re-
pair of tough jobs.

PINCOR Rotary Converters

Provide the most dependable means for converting
direct current to alternating current. Particularly
well adapted for operating radio receivers, public
address systems, power amplifiers, signs, A.C. mo-
tors, etc. Available in two standard classifications
"DA" and "TR" — both with or without filtei engi-
neered for converting 6, 12, 32, 110 or 220 volts
D.C. to 110 or 220 volts A.C, 40 to 2,000 watts.
There is a "Pincor" converter for every require-
ment. Write for complete descriptions and data.

PIONEER GENE-MOTOR CORP.

Dept. R-2B

466 W. Superior Street Chicago. III.

Radio Today

NEW BOOKLETS

International Resistance Co., 401 N.
Broad St., Philadelphia, Pa.— IRC
Volume Control Guide, in an easy-to-
read revised edition. Covers standard
and special replacement controls for
every requirement, including many
short cuts and money savers. Can be
obtained at IRC jobbers or from the
company.

J. F. D. Mfg. Co., 4111 Ft. Hamil-
ton Parkway, Brooklyn, N. Y. — de-
scriptive material on the new vertical
home antenna, ballast tube testers,
wire, coils, cord, auto antennas, sup-
pressors, test prods, etc.

Thordarson Electric Mfg. Co., 500
W. Huron St., Chicago — amplifier
guide No. 346-D with complete dope
on amplifiers from 8 to 120 watts
output. Circuits are complete with
diagrams, parts lists, etc. Available
from any Thordarson jobber or from
the factory at 15 cents.

Precision Apparatus Co.. 821 E. New
York Ave., Brooklyn, N. Y., offers free
supplementary tube charts, test data
on how to test the new Loctal, single-
ended or other new tubes on present
Precision meters 500, 500-A, 510, 600,
700, 800, 815, 900. Mention model and
serial number when writing.

Charles Avnet Co., 156 Chambers
St., N. Y. City, has issued a 1939 cata-
log, featuring telescopic aerials for
autos and the noise-reducing type for
home receivers. Copies free.

RCA Victor, Camden, N. J. — re-
cordings of university and fraternity
airs, from the Victor and Bluebird
lists, collected in handy form.

Carron Mfg. Co., 415 S. Aberdeen
St., Chicago — 1939 catalog of cones,
field coils, i.f. transformers, antenna
and oscillator coils, duraluminum dia-
phragms, directional baffle horns, crys-
tal sets, head phone sets, inter-office
communicators, etc.

Oxford-Tartak Radio Corp., 915 W.
Van Buren St., Chicago, 111. — Covers
loudspeaker selection and placement,
and number of speakers to use, fully
diagrammed. Different needs for extra
speakers are given to help boost sales.
Featured in Oxford Techni-Talks.

The Federal Communications Com-
mission, Washington, D. C„ now has
available official lists of radio stations
in Canada, Cuba and Mexico. Contain
locations and power rating of stations.

Tobe Deutschmann Corp., Canton.
Mass. — twelve pages of capacitor in-
formation for daily use of dealers and
servicemen. New model Lab type con-
denser bridge and analyzer included.

SOUND SYSTMI SeUd U» \
V KOMOIMCtt • HHHDMlt^

• Portable System Model PX-714 includes one
Model 1236 Crystal Microphone, mounted on a
banquet stand, complete with 25 feet of rubber
covered shielded cable and plug; one No. 714
Amplifier, two No. 3810 10" P.M. Speakers with
25-foot cables and polarized plugs. All is con-
tained in one moderate sized carrving case.

• 35-Watt Model FD-35 includes Model 4L35 12-
tube, 35-watt amplifier, remote control with 25' of
flexible cable, Model 1245 Dynamic Microphone
with 25' of shielded rubber covered cable and
plug, one No. 1122 microphone stand, 2 Mode!
3813 speakers, 2 Model 2824 wall baffles.

ir Webster-Chicago manufactures a complete line of
sound equipment and accessories.

Ask Your Jobber or Write

For 14 Watts ... 35 Watts ... or any size

Sound System . . The Natural Choice Is

WEBSTER-CHICAGO

Webster-Chicago

14 WATT
SYSTEM

Model PX-714

• Underwriters' Labo-
ratories Approved

• High Gain (123
D.B. 14 Watt Beam
Output Type Am-
plifier)

• Improved M u 1 1 i-
Stage Inverse Feed-
back Circuit

• Two Individual Elec-
tronic Input Circuits

• Variable Output
Connections for Ad-
ditional Speakers

• For Portable or
Permanent Installa-
tions

35 WATT
SYSTEM

Model FD-35

• High Speed
Expander

• Multi-Stage
Degeneration

• 4-Input Mixing
Circuits

• Dual Tone
Compensation

• Underwriters' Labo-
ratories Approved

• Remote Control

• For Permanent
Installations

priced.

Manufactured under license
arrangements with Electrical
Research Products, Inc., sub-

WEBSTER-CHICAGO fei^SS^E

5622 Bloomingdale Ave., Chicago, Illinois Telephone and Telegraph Co.

February, 1939

FOR MODERN

CHANNEL TESTING

YOU CAN'T BEAT THIS NEW

•MILLION •
SIGNALYZER

• RADICALLY NEW CIRCUIT

• CHECKS ALL CIRCUITS

• ELECTRONIC "EYES" GIVE DIRECT
VISUAL READINGS

• CHECKS BOTH AC AND DC

DEALERS' NET COST ONLY

The Complete
MILLION Line

Includes

Vacuum Tube

Voltmeters

Signal Generators

Tnbe Checkers

Multimeters
Sound Systems

MODERN SERVICING DEMANDS MODERN TEST EQUIPMENT

This new Million SIGNALYZER provides you with a quick, positive method for modern CHANNEL testing — for check-
f inn sinqly or simultaneously the RF, IF, AF and power circuits of a receiver without affectinu its operation Sim-
plifies the servicing of "dead" or intermittent sets. Checks AC and DC voltages. Infinite input impedance using a
co-axial cable. One dial is calibrated for approximations of bias, detector plate and oscillator voltages, simulating
the functions of a vacuum tube voltmeter. The electronic "eyes" give full deflection on less than .1 volt AC or DC.
Unit is furnished complete with SEVEN tubes, ready to operate. The 1939 "BUY" in the test equipment field.
Available for panel mounting.

Complete Literature on Request

MILLION RADIO AND TELEVISION LABORATORIES

697 W. OHIO STREET

CHICAGO, ILLINOIS

MR SERVICEMAN

Make the Most of Your Time in '39!

MAIL THIS COUPON

men of America.

N ame

Mailing Address ^

„nd initiation.

fitv „., ao for B«es rines where

Let s Grow Together in 1939

RADIO SERVICEMEN OF AMERICA, INC.

Joe Marty, Jr., Executive Secretary, 304 S. Dearborn Street, Chicago, III.

* Make progress this year by using
your time to the best advantage.
Tie-up with the only national in-
dependent servicemen's organiza-
tion in the industry and enjoy its
benefits! The RSA is cooperative
— run by and for its members —
uncontrolled by any outside inter-
ests. You elect your representa-
tives— all responsible officers are
bonded.

Here's what RSA gives you:

* Monthly Advanced Circuit Notes
for Members each month, "k Tech-
nical Help on Service Problems. *
Access to its National Speakers' Bu-
reau. * Advanced Service Courses
to Members at slight cost. * A
Monthly RSA Publication. * An-
nual Convention. * And many other
benefits now being planned.

Join up with your fellow service-
men and be "in." Send the
Coupon Today!

National Yearly Dues . $3.00
Initiation Fee .... 1.00

Radio Today

RADIO EXECS ADVANCED

C. J. Burnside, formerly manager of
radio engineering of the Westinghouse
Electric & Mfg. Co., has been appointed
manager of radio sales. He is suc-
ceeded by Donald Q. Little, former
chief radio engineer. John W. McNair,
formerly assistant to the works man-
ager of the Westinghouse merchandis-
ing division at Mansfield, Ohio, has
been named assistant manager of the
radio division.

Herman Haas is the new district
manager in central Ohio for Crosley
Radio Corp., according to news from
general sales manager Thomas W.
Berger.

Sydney Nesoitt has been named sales
manager of Lear Developments, Mine-
ola, N. Y., makers of aircraft radio
equipment. Mr. Nesbitt has been in
aviation and radio for more than 15
years, and recently was associate edi-
tor of Canadian Aviation magazine.

TOM JOYCE AND FRANK WALKER
GET RCAM VICE-PRESIDENCIES.
FINN ADV. MANAGER

George K. Throckmorton, president
RCA Manufacturing Company, an-
nounces that the board of directors
has elected Frank B. Walker to be
vice-president in charge of all record
activities, and Thomas F. Joyce, vice-
president and advertising director.

At the same time, Mr. Throckmorton
also announced: Jay D. Cook has been
made manager of the International
Division, covering all of the company's
activities in export.

David J. Finn has been elevated to
the post of advertising and sales pro-
motion manager. Edward W. Butler
has been appointed manager of the
radio and victrola division, in which
his former duties in connection with
small radios will be consolidated.

Paul C. Richardson, formerly man-
ager of the radio and victrola division,
will head a new educational sales divi-
sion.

Tom Joyce

At 34 years of age, Mr. Joyce is the
youngest vice-president of the com-
pany. His spectacular rise from a
factoriy job through progressively
higher positions to become an officer
of the world's largest radio organiza-
tion and a member of its management
committee, has been a source of in-
spiration to all who have been asso-
ciated with him.

In 1922, he went to work in the Gen-
eral Electric Company's Fittsfield,
Mass., plant calibrating electric meters.
After six months, he applied for and
got the job of reporter for the Com-
pany's employee publication for $2.50
per week less than he was getting in
the factory. Two years later, he asked

Dave Finn, newly - elected ad
manager for RCA.

for a transfer to the Harrison, N. J.
plant so that he could study at New
York University at night. The trans-
fer was made, and he went to work
as a clerk in the advertising depart-
ment. Four years later he was grad-
uated with honors from the university.
By 1934 he was head of a consoli-
dated department handling the adver-

(Continued on next page)

TEST

THIS Sew

LIGHT CX

CONSTANT SPEED

PHONOGRAPH MOTOR

TRY out the new Flyer
CX. Latest General In-
dustries development, for
portables and table models.
Self - starting. Quickly
reaches running speed. Free
ventilation and fan - cool
operation. Ample oil re-
serve in sealed chamber. Patented-
drive turntable (not shown) is included,
gives positive insulation.

Order a Sample CX Flyer

Get it now, for testing in your own
case or cabinet. Specify frequency and
voltage of current, and size of turntable.
Catalog sheet and prices on request.

2&G-ENERAL IMDUSTMES CO.,

3938 Taylor Street, Elyria, Ohio

?#**€&/

*••••

Dealers are amazed when they discover
how easy it is to sell Presto sound re-
cording equipment. Recorders have a
personal appeal to the customers, not
found in any other line of equipment.
When your prospect hears the beauti-
fully clear, noise-free reproduction ob-
tained from Presto recordings, he real-
izes that, at last, he has found a real
recorder at a price he can afford. A
short demonstration is usually all that's
needed to close the sale.

LET US PROVE THIS TO YOU

At your request a Presto factory repre-
sentative will call at your store. He will
demonstrate the Presto recorder to you
and to as many of your customers as
you care to invite to hear it. He will
show you how to operate the machine
and how to sell it. The demonstration
won't cost you a cent and you're under
no obligation to buy.

Take advantage of this unusual offer to-
day. Write for literature and the name
of your nearest Presto representative.

The New Presto Model K Recorder

moderately priced at $189.00, is now the fast-
est selling recorder on the market. Hundreds
have been sold in the last two months. Smart-
ly designed, manufactured economically in
large scale production, the model K is the
greatest value offered today. And its per-
formance is guaranteed by PRESTO . . .
world's largest manufacturer of sound record-
ing equipment.

PRESTO

RECORDING CORPORATION

244 W. 55th STREET, NEW YORK, N. Y.

February, 1939

WIRE-WOUND POWER

Resistors

Jo* Aerovox Condensers

# Try these new AEROVOX power
resistors along with AEROVOX
condensers for servicing old
equipment or when building new
equipment. Give them the tough-
est jobs. You'll be pleasantly sur-
prised with their performance —
and likewise with the cost, first
and last.

PYROHM JR.

O A lot of power resistor in mighty small
size. -Due to selected materials — quality
wire; crackproof refractory tube; powdered
glass enamel fired at red heat; vitreous
enamel tightly fused to wire, terminal con-
nections, tubing. 10 and 20 watts. Popular
values.

SLIDEOHM *

0 Same as above but with adjustable slide
contact. Any resistance value and tap
within unit's range. Additional contact
bands at slight added cost. 25, 50, 75,
100 and 200 watt ratings.

Ask to see them . . .

• Local jobber should have these AEROVOX
resistors. Ask to see them. Buy them.
Use them. Latest catalog on request.

FfCQVW

CORPORATION

NEW BEDFORD, MASS.

IN CANADA: AEROVOX CANADA. Llmll.d Hamilton. Onl.

MORE TRADE FLASHES g

"Chief engineer" now is E. G. (Perk)

Perkins' title at Supreme Instrument

Corp.

tising and sales promotion activities
for all of the RCA Manufacturing Com-
pany's products in both the foreign
and domestic fields.

Mr. Joyce is known throughout the
radio industry as one of its ablest
public speakers. Throughout his career
he has derived his greatest effective-
ness from his ability to couple selling
and advertising fundamentals together.
He was one of the first, several years
ago, to foresee and predict the remark-
able comeback of recorded music tu
popular favor. He authored the higtuy
successful Victor Record Society Plan,
which is nearing its hundred thous-
andth membership. He makes his
home in Haddonfield, N. J.

David J. Finn, new advertising man-
ager, is a native of Natick, Mass. He
received his education at Little Rock
College, in Arkansas, and at Texas
A. & M. College. He joined the light-
ing division of the Edison Lamp
Works in 1923, later transferring to
Atlanta. With the formation of the
RCA Radiotron Company, he was ap-
pointed sales promotion chief of a
large midwestern district, with head-
quarters in Chicago. In 1934, he was
appointed assistant advertising man-
ager, and later became assistant to
Mr. Joyce in the larger duties of the
consolidated advertising departments.

PILOT BIDS FOR AMERICAN
MARKET

Doing most of its past business in
the export field, the Pilot Radio Mfg.
Co., of Long Island City, N. Y., an-
nounces its entrance into the American
market by redesigning its line. Two
popular-priced sets will be pushed by
three weekly broadcasts over WOR and
newspaper advertising.

Comell-Dubilier executives were ac-
tive speakers recently, with William
M. Baily, chief engineer, speaking on
paper and dykano capacitors, and
physicist Stanley Walters discoursing
on application of wet and dry electro-
lytics before the New York Chapter of
RSA. Frank Taylor, sales engineer,
showed pictures of the Cornell-Dubilier
plant in operation to both Philadel-
phia and New York Associations.

■ A

CROWE again leads with an
outstanding line of CUS-
TOM-STYLED Remote Controls
and Panel Mounting Kits for
Auto Radios in 1939 cars. These
Controls and Kits are officially
styled to provide individual
matching of specific car designs.

Flexible Stock

With their interchangeable fea-
ture, which fits the instrument
panel of almost any car, Crowe
Controls and Panel Kits make
the dealer's stock of radios much
more flexible. Crowe Controls and
Kits are equally suited for new
jobs, replacements or transfers.

Official Styling

True Custom Styling is a feature
for which Crowe Controls and
Kits are noted. They complete
the panel design and provide cor-
rect appearance. Escutcheon
plates perfectly match the design
ensemble.

Crowe Controls Span
Five Years

Taking in a span of five years,
Crowe Controls and Kits can be
used for '39, '38, '37, '36 and '35
cars — carrying out the designer's
official styling. Thousands of
radios, still in use after years of
service, offer a profitable service
business.

Ask for Bulletin 230

Crowe Name Plate & Mfg. Co.

1771 Grace St. Chicago. III.

ARVIN • PHILCO •
DELCO- EMERSON-

Radio Today

SEES MORE SALES FOR '39

Improvement in business will be re-
flected in increased radio parts sales
during the next twelve months, states
John J. Mucher, who heads the Claro-
stat Mfg. Co., Inc., Brooklyn, N. Y.

"Better business in 1939," says Mr.
Mucher, "must mean more radio sets
sold, which in turn will call for more
parts to manufactures. More people
employed will mean sets in a better
state of repair, calling for more re-
placement parts.

"Also, there is definite promise of
scheduled television programs in the
New York metropolitan area before
spring, which will give the necessary
impetus to television set production.
Whether factory built, kit assembled,
or just plain home made, the televi-
sion set is going to mean a lot of parts
required.

"The total of sales will run higher
during 1939. It may even equal the
pretty good year of 1937, the first half
of which was very good."

Chief engineer Bill Schnell of Senti-
nel Radio Corp. got some surprises re-
cently when he agreed to take a "lei-
surely" trip West with the company's
sales manager George Russell. The
pair wound up by covering over 500
miles daily, and making dozens of calls
on scattered Sentinel jobbers. Report
also is that distributors and dealers
are having a profitable time with the
new l^-volt farm models, which fea-
ture extremely low operating costs.

An amateur television club which
successfully builds and operates its
own video transmitting and receiving
apparatus, has been organized by the
Indianapolis, Ind., YMCA, with the
help of National Union engineers Mar-
shall P. Wilder and F. M. (Ray) Paret.
Transmissions to club members are
now limited to still illustrations, but
live subjects will be used soon. Robert
Thompson is president of the club.

Mutual Network will have a total of
110 affiliations when WBRK, Pittsfield.
Mass., joins on March 1.

RADIO DEALERS

SOUND SALES CAN BE PROFITABLE

R. E. Potts, energetic sales manager
for Bell Sound Systems.

TIE IN WITH THE C. I. S.E. PLAN!

To wide awake radio dealers,
Clarion Institute of Sound Engi-
neers offers the greatest opportun-
ity, to profit on sound sales, in the
history of the industry. The C.I.S.E.
Plan crushes every bone of conten-
tion the P. A. equipment dealer ever
had ! Closes the profit leaking gaps !
Sets the dealer up on a really com-
petitive basis!

Wrote one dealer who is profiting from
the Plan : "You are doing us fellows in
the field a favor" — "just what I've been
looking for a long lime." said another,
and "one of the best Christmas presents
I received this year was the renewal of my
agency contract." These are statements
from letters on file at C.I.S.E. headquar-
ters. Enthusiastic praise from recognized
dealers.* But right now, we are talking
about YOU. We want YOU to join this
BIG PABADE to "sound" PBOFIT S under
the C. I. S. E. banner. Membership in
C.I.S.E. costs nothing except your whole-
hearted cooperation. Our aim is to help
you make more money in sound. Bead
what else membership in C.I.S.E. does
for you. Then mail coupon TODAY for
complete information.

VUT FRU MtMBmHlP

to thf. nw w*lH

♦Names on request.

Factory Purchasing
Power

Direct from the factory to you.
No middleman to split the profits
with.

Exclusive Selling
Territory

Only one C.I.S.E. agent is ap-
pointed to a territory. You auto-
matically become the sole repre-
sentative in your locality.

mi Complete Line

'Jtl Competitively Priced

A complete line of P.A. equip-
ment, dependably engineered.
Clarion is not only competitively
priced, but priced to outsell the
lowest!

Protected Profits

The C.I.S.E. plan offers factory
purchasing power, exclusive terri-
tory, a complete line, dependably
engineered and competitively priced.
You can't fail to profit by being
a C.I.S.E. agent! C.I.S.E. gives
you real PROFIT PROTECTION!

TRANSFORMER CORPORATION OF AMERICA

CLARION INSTITUTE
OF SOUND ENGINEERS
69 WOOSTER ST.# N.Y.C

. J

■ CLARION INSTITUTE Of SOUND ENGINEERS ■
5 69 WOOSTER STREET. NEW YORK CITY J

* Please send me a C. I. S E. application im- I
P mediately. This, in no way obligates me, of J
J course. RT-239 J

■ Name ■

■ ■
I Addreu ■

" ■

I CHy S/o/e |

PASTf COUPON on penny post CARD

February, 1939

AUTO RADIO CONTROLS

Simplest of All to Install

THE ONLY CONTROL WITH ALL

RATIOS SELF-CONTAINED

Works Clockwise or Counter Clock-
wise With Same Dial
Absolutely No Back-Lash
^o Cord, Mo Cable, Positive Gear Drive
No Mutilating of Instrument Panel
100% Universal in Every Way
No Excessive Stock to Carry
One Control Fits Them All

COMPLETE LINE OF

1934-35-36-37-38 and

1939

Custom Matched Escutcheon
Plates with Edge Illuminated
Non-Glare Glass Dials.

1939 CHEVROLET SPECIAL

To re-install any 1936, 1937 or 1938 DELCO,
UNITED MOTORS or CHEVROLET custom-built
radio into a 1939 CHEVROLET car, only this
plate is necessary UTILIZING ORIGINAL CONTROL.
Plate is heavy die casting — exact duplicate of original
dummy plate on dash of 1939 CHEVROLET. Makes
excellent custom-matched installation.

1939 FORD

1939
CHEVROLET

1939 PONTIAC

The season for this business is now
at hand. With a reasonably priced
STAR Control and STAR Escutcheon
Plate, a profitable business can be done.

CASH IN ON IT NOW !

Mail this coupon for complete illus-
trated catalog No. 391.

STAR MACHINE MANUFACTURERS. INC.
1373 East Bay Avenue, Bronx, New York, N. Y.
Send catalog offered in February RADIO TODAY.

Name
Address
City

State.

TRADE NOTES

-The 1939 Radio Parts Trade Show
will be the biggest in its history," re-
ports managing director Ken Hatha-
ivay, "if present booth bookings are
any indication."

The first two days of the show, June
14, 15, will be open only to jobbers,
and manufacturers and their engineers
and agents. The last two days, June
16, 17, will be for servicemen. In this
way, claims Mr. Hathaway, more spe-
cialized attention can be paid to the
problems of jobbers and servicemen.

Gen, sales man. Charles B. Shapiro
reports that west coast sales of How-
ard Radio Co., Chicago, were better
in January than any similar month in
the firm's history. For the eastern ter-
ritory, Howard Briggs reports with
equal optimism. The new battery sets
with low-drain tubes have sold well,
they state, while console set sales are
also above par. Says Mr. Shapiro: "The
large console field proves that the
American public is still very much in-
terested in the purchase of radios as
a piece of furniture."

Robert Ban; of Electronic Design
Corp., discussed problems of sound
amplifiers for public address work at a
meeting of more than 100 radio dealers
held at the Wedemeyer Radio Co.,
Ann Arbor, Mich.

A new Los Angeles airport is being
built at Inglewood, Calif., near the
plant of the Universal Microphone Co.
President James R. Fouch of Universal
says that "those in the industry who
notify our factory in advance will be
met at the airport and taken through
our plant."

RCA Mfg. Co. has shifted its district
4 offices to 811 Clark Bldg., Pittsburgh,
Pa., effective Jan. 30. James W. Cocke
is in charge.

Presto Recording Corp. has moved
offices and equipment plant to new,
uarger quarters at 242 W. 55th St.,
N. Y. City. Discs will continue to be
pressed at the Newark, N. J. plant.
The change is due to a rise of 48 per
cent in business for 1938.

Rockford Chapter of RSA joined
the Freeport chapter recently for din-
ner and a lecture by Leland S. Hicks,
Thordarson Electric Mfg. Co., on
"Practical Transformer Applications
in Servicing Receivers."

A television testing laboratory has
been launched by the National Union
Radio Corp., Newark, N. J., to assist,
free of charge, radio set makers in the
design and manufacture of their sight
receivers. W. M. Perkins and M. G.
Nicholson are in charge of the tele-
vision "proving grounds" which are
available to receiver firms desiring to
gauge the efficiency of circuits and
equipment. All facilities are gratis.

Kail*

Plug-In
Rectifier

EVERY ELECTRICAL
INSTRUMENT MEASURING
A.C. VOLTAGES AT HIGH
RESISTANCE SHOULD HAVE IT

• Previous Problem:

Deactivation of copper oxide rectifiers caused
by overloads, caustic gases or humid atmos-
pheric conditions prevalent in every locality
at some period of time has heretofore neces-
sitated the complete recalibration of the
tester circuit in which the rectifier was in-
corporated on insertion of a new copper ox-
ide rectifier. In most cases this meant return
of the complete tester to the factory, with
its attendant delay and expense.

• Triplet? s Answer:

A plug-in unit incorporating a new copper
oxide element precalibrated to a factory
standard and thus when plugged into the
tester gives you factory calibration. As sim-
ple as plugging in a tube. Obtainable
through jobber or direct. Rectifier elements
are the best obtainable — completely sealed
for maximum protection against humid-
ity and caustic gases. The great practica-
bility of this little device has in truth
changed the Radio Tester World.

^^f

THESE and OTHER

MODELS have Plug-In RECTIFIERS

MODEL 1601

0E LUXE
SET TESTER

Complete in Leather-
ette Case . . .
DEALER NET
PRICE $49.33. In
Metal Case. DEALER
NET PRICE $45.33.

MODEL 1611

PUSH-BUTTON

TUBE-TESTER
AND V0LT-0HM-
MILLIAMMETER

Complete in Metal
Case . . . DEALER
NET PRICE $49.50

SEE YOUR JOBBER-
WRITE FOR CATALOG!

THE TRIPLETT ELECTRICAL INSTRUMENT CO.

192 HARMON AVE., BLUFFTON, OHIO

pA£eiiwn*

ELECTRICAL INSTRUMENTS

Radio Today

John Doe has a reputable radio service business.

Have you?

His location is free from interference with already
established Tung-Sol agents. Is yours?

He has the necessary background and equipment to

service ra

dio.

Check?

He turns over his tube stock at least every three or
four months. How about you?

His facilities lend themselves to prominent display of
attractive advertising material. Do yours?

He has a reputation for maintaining standard prices.

What about yourself?

He could render prompt monthly reports of con-
signed stock with remittance for tubes already sold.

Would you?

IF YOU CAN MATCH HIM . . .

there's the "greatest" deal in radio
waiting for you. Write for details.

TUNG-SOL

TUNG-SOL LAMP WORKS Inc., Dept. C. Radio Tube Division

SALES OFFICES: Atlanta • Chicago • Dallas • Denver • Detroit • Kansas City
loi Angeles » New York • General Offices: Newark, New Jersey

FOR 1939 -It's ATR Vibrators!

FULLY GUARANTEED FOR 1 YEAR

A Complete
Line of Replace-
ment Vibrators
for Auto and
Farm Radios
Featuring:

• Large Oversized V16" Di-
ameter Tungsten Contacts
having Full Wiping Action —
for greater reliability and
Longer Life.

• Perforated Reed of Highest
Quality Swedish Spring Steel
— for uniform flexibility and
prevention of reed breakage.

• Highly Efficient Magnetic
Circuit with Formed Base —
for greater accuracy and more
uniform operation on both
high and low voltages.

• Mica and Metal Stack Spac-
ers with Two-Bolt Stack Con-
struction— for adjustment
permanency under any opera-
tion condition.

• Extra Flexible Leads with
Tinned Clamp Supports — for
good low resistance connec-
tions and freedom from lead
breakage.

• Highest Precision Construc-
tion and Workmanship —
Practically all parts used are
held to within a tolerance of
0.0005 of an inch.

New

descriptive

catalog

No. 139

now ready,

covering

New
Products,
Modefs,
Prices —
everything
in Vibrator-
operated

and
Rectifier

Power
supplies,

Write

today tor

your free

copy.

finflll To win Lew customers arnl friends, ATR will give absolutely Free.
Jr tC ■ j m j one No. l-4o Vibrator (Competitive 4-prong non-synclironoug type
listing at $1.75) to every dealer or serviceman purchasing any 6
Vibrators shown on the ATR Vibrator Guide. Merely send to the factory six
"order reminders" taken from ATR Vibrator cartons (there is one on each) with
your jobber's name written or stamped on and date of purchase. For each group of
six ATR Vibrator "order reminders," one No. 1240 ATR Vibrator will be given
free, postpaid. AU purchases must be 1939. This offer good until May 1, 1939.
Act Now! Remember — insist en ATR Vibrators; there are none betterl I

ATR Vibrators are VALUE PLUS— and Prices, 25% Lower!!

Write for your FREE Copy of the ATR Vibrator Guide and Equivalent
Chart. Your ATR Vibrator Distributor will be Happy to Serve You.

AMERICAN TELEVISION & RADIO CO.

World's Largest Manufacturer of Vibrators, Vibrator-Operated and

Rectifier Power Supplies
ST. PAUL, MINNESOTA, U. S. A. Cable Address : "Likex" New York

^ttrtfc-Va/iil^

>mv<v

©HMITI

In the bitter cold of the Arctic
and Antartic — or in the humid,
sweltering heat of the tropics
— Ohmite Resistance Units de-
liver unfailing, trouble-free
service day-in and day-out.
That's why they are so widely
used by Servicemen,
as well as Engineers
and Manufacturers,
in every climate in
every part of the
world. Ask your Job-
ber for Ohmite Brown
Devils, Dividohms,
Chokes, Cordohms
Rheostats, etc.

wire-wound replacement resis-
tors. Extra-sturdy all-porcelain
construction with the perma-
nent protection of Ohmite
Vitreous Enamel just as in the
big Ohmite industrial units.
Resistances from 1 to 100,000
ohms.

Send Coupon Today for FREE CATALOG 17

OHMITE MANUFACTURING CO.
4876 Flournoy Street, Chicago.

Please send me free Catalog 17.

Name

Address

OHMITE BROWN
DEVILS — The popular
10 watt and 20 watt

City

Occupation

^UtmtAQnMai

RHEOSTATS *

TAP SWITCHES

February, 1939

I«C

RESISTANCE

ANALYZER and INDICATOR

FOR USE WHEREVER

RESISTANCE MEASUREMENTS

ARE MADE

An indispensable radio instrument
for every ham, serviceman and experi-
menter. Fuse protected, fool-proof,
guaranteed. Dozens of uses. Deter-
mines resistance values ; estimates
tapers and values of controls; serves
as voltmeter multiplier, rheostat or
potentiometer; voltage divider; cali-
brated gain control or attenuator, etc.,
etc. Direct reading dial. Only 1 knob
adjusts resistance from 0 to 1.0 meg-
ohm. Bakelite case 43/4"x31/("- Three
fuses. Interesting 16-page instruction
manual supplied with each Analyzer.

Net Price (complete)

$4.95

All Metal
11" long x

5 "2" deep x
5y2" high

RADIO'S HANDIEST
PARTS CABINET

This new All-Metal IRC RESIST-
O-CABINET contains the first really
balanced resistor assortment. Supplied
complete with 59 famous IRC Resistors
in practically every type and range
commonly used in service work. You
pay only the standard prices for the
resistors. The cabinet is yours at not
one cent of extra cost. The 59 resistors
include popular ranges in Vz- and 1-
watt Insulated Metallized Resistors;
also 10-watt fixed and adjustable wire
wounds, the latter giving every range
from a few ohms up to
II 10,000 ohms. Cabinet con-

tains four large drawers
with seven compartments
in each. Designed to stack
solidly, one atop the other.

List Value of Resistors $15.16
(The Cabinet is included)

NOTE: Resisl-0-Cabinel not sold empty.

INTERNATIONAL
RESISTANCE CO.

40! N. Broad St., Phila , Pa.

By the makers of
INSULATED

TnetaUL

STANDARD OF QUALITY EVERYWHERE

PRESENT "SOUND" OUTLETS
AND THEIR PROBLEMS

(Continued from page 15)

Those parts jobbers who have made
a success of sound selling are the ones
which have established sound depart-
ments isolated from the regular replace-
ment division. Contact salesmen have
been put into the field for the purpose
of selling sound equipment to indus-
trial concerns, amusement centers and
anyone requiring this type of merchan-
dise.

Wherever it has proven feasible to
operate with the serviceman as a con-
tact party, this procedure has been
adopted. In cases where a serviceman
or individual can sell at the list price,
or the list price less a small dis-
count, the jobber has handled this
sale on a direct-to-dealer basis. When
keen competition has arisen from
other sources, the jobber has assumed
the responsibility of the sale, paying
the serviceman, or individual supply-
ing the lead, a small commission.

Of her outlets

Companies Specializing in Sound Q.nly.
— This type of organization is usually
an extremely localized affair, whose
business consists of both rental and
direct sales. They have never con-
sidered any form of dealer business.
Such sales agencies inform us that
their major competition comes from
the local parts jobber or mail-order
house who sells direct to the con-
sumer.

Class A Radio or Refrigerator Dealer
with a Sound Dept. — Class A radio
concerns have protolems which are
almost identical with those of com-
panies specializing in sound only.
These people, however, have had con-
siderable experience already along
these lines in their radio-set sales
activities. The importance of proper
purchasing power is immediately rec-
ognized and secured, otherwise they
don't attempt to go into the P. A.
business.

Music Dealer with a Sound Dept. —
This is a new sales agency which has
become of great importance during
recent years. The music trade has
suddenly realized that one of the big-
gest P. A. consumers lies within their
scope, i.e., the musician. More and
more of these outlets are establishing
sound departments every day.

Other remaining outlets for sound
equipment are not entitled to special
consideration. Individuals having an
opportunity to sell sound equipment
by virtue of their special position
must work with one of the above men-
tioned concerns.

All sound sellers

Our conclusion is that the selling
of sound equipment must be handled
on the same basis as automobile sales,
regardless of what we may choose to
call this new plan. For the sake of
convenience and attractiveness, we
felt that an organization ■with a name
like the Clarion Institute of Sound
Engineers would enable us to com-
bine into one unit all concerns spe-

COMPLETE IN

OtJARTERED-OAK
CASE

Cheeks All Types Radio
Receiving Tubes

Including the New 1.5 and 50- Volt

Series: Lcctal Base Types and the 0Z4 and other
Uses Attractive Triplett
Direct Reading Instru-
ment 3" Size. (GOOD-
BAD) Scale.
• Line Voltage Adjustment

Gaseous Rectifiers.

• Separate Plate Tests on
Diodes and Rectifiers

• Neon Short and Leakage
Tests

• Ballast Tube Continuity • New Improved Low Loss

Test

Switch

Suitable for counter or portable use. Sloping etched

panel of silver and black. Model 431 $15.90

Checks all receiving tubes. (No ballast or gaseous rec-
tifier test.) Tester uses dependable Readrite Meter.
Quartered-Oak case same as for Model 432. Write for
Catalog — Section 219 College Dr.

READRITE METER WORKS. Bluffton, Ohio

vO*c *•«

<V?oV

v?:Sr

llll!li]!i1:|!«;T;

IOO SIXTH AVE., NEW YORK, N. Y.

CHICAGO, ILL. • ATLANTA, GA. • BOSTON, MASS.
BRONX, N. Y. • NEWARK, N.J. • JAMAICA, L. I.

Radio Today

cializing in sound systems, regardless
of their official status in other fields.
Hence, the C.I.S.E. plan.

To summarize, we contend that the
local parts jobber is in a better posi-
tion to make a success out of selling
sound than any of the other types of
outlets mentioned. However, if the
parts jobber wishes to accomplish this
feat, a modern approach must be
employed, i.e., he must establish a
sound department and sell direct to
consumer whenever necessary, ana
where it is possible, work with tne
serviceman or contact individual on
a commission basis. Maintain a rep-
resentative stock for display purposes
at all times. Order bulk requirements
direct from the factory and thereby
create a large turnover.

By adhering to these fundamental
business principles, and handling the
right type of product, he must succeed.
(Signed) Hubert L. Shortt, Pres.
Transformer Corp. of America,
New York.N. Y.

SALES AIDS

PLUG-IN RESISTOR MERCHANDISER

Three adjustable plug-in resistors
that will replace 99 per cent of the
1,000 different types now in use, made
available in a compact and attractive
serviceman's kit containing five units
— 2 type A's, 2 type B's and 1 type C.
They are made by the J. F. D. Mfg.
Co., 4111 Ft. Hamilton Parkway,
Brooklyn, N. Y.

TRANSITONE DISPLAY

Jiumuone,

PHILCO.

Philco has just brought out a new
silk-screened fabric display for dealer
use in showing their new line of
Transitone radios. The display stands
5V2 feet high, is handsomely colored
in blue, gray and gold, and is capable
of accommodating from 6 to 8 sets,
placed to permit self-demonstration by
the prospective purchaser.

On the top of the display a large blue
circle carries the words in gold letter-
ing, "Transitone, Sold and Guaranteed
by Philco."

ENHANCE THE Quuijty OF
RADIO RECEPTION

Titt&v

COBNELI.-DUBII.IER ELECTRIC CORPORATION

WKmM

mrA

% t '— - \^ n^^^sE

H2^>* i

Flashing display sells interference filters.

ANIMATED INTERFERENCE
FILTER DISPLAY

In a newly announced campaign,
Cornell-Dubilier is pushing the sale of
Quietone interference filters. Radio-

consumer advertising will be used to
help jobbers and dealers sell the units.
Powerful dealer helps and startling
flashers displays will be furnished.
Flasher illustrated tells story of how
Quietone filters provide clear reception.

a new

SI M P S 0 N

Tube Tester

BUY ONLY 19 NATIONAL UNION TUBES

AND /OR ELECTRO CONDENSERS PER

MONTH -ASK YOUR N. U. JOBBER

It's a little beauty, this new Simpson
Tester! Light weight, small size,
compact, great big easy reading
meter. Just the kind of instrument
you need ior all 'round work. In addi-
tion to tubes, it tests pilot lamps, Christ-
mas tree bulbs, ballasts, gas rectifiers
Tests ior noise and shorts.

For complete technical data consult your
National Union jobber. He's ready to
GIVE YOU one of these testers on an
amazingly attractive N.U. offer. Small
deposit refunded as merchandise
credit when your contract is com
plete. Get details NOW!

TESTS SINGLE ENDED
AND LOKTAL TUBES

You can always use

an EXTRA tube tester . . .

let your N.U. Jobber give

you one of these new SIMPSONS!

Come on!

BUILD CUSTOMER CONFIDENCE

with

NATIONAL UNION RADIO TUBES

and CONDENSERS

I NATIONAL UNION RADIO CORP.

I Newark. New Jersey

I Who is nearest Nat. Union Jobber?
I

RT-239 |

Name

I Street

i City State

February, 1939

• Old Man Centralab took his
baptism in a furnace at
2,500 F.

He laughs at such tempera-
tures as 200 degrees . . . the
sort of heat he has to take
sometimes when he is parked
near a ballast resistor or a
transformer in a radio re-
ceiver.

Even where chassis tempera-
tures ARE elevated the Cen-
tralab resistor, with its com-
plete ceramic construction
baked at 2,500 degrees, laughs
at a mere 200 degrees. Where
ordinary fixed resistors break
down under temperatures of
200 or even less, Centralab is
positively unaffected.

Join the thousands of Centra-
lab addicts . . . specify Cen-
tralab for original equipment
or replacements.

■WJWfltD BAKELTTt

• Baptized in fire at 2,500 degrees
. . . hard as stone. Center ceramic
core, and ceramic jacket fired to-
gether to form a single shock-proof
unit. Pure copper covers resistor
end for wire lead contact.

CENTRALAB: Div. of Globe Union Inc.
MILWAUKEE, WISCONSIN

Centralab

FIXED
RESISTORS

WITH THE REPRESENTATIVES

"The Representatives" are planning
their annual shindig for an earlier
date this year, but no time or place
will be set until the Social Committee
can find out what sort of a good time
the members want.

Sec't.-Treas. David Soskin, of Aero-
vox will stay at his old business ad-
dress, despite his company's moving to
larger quarters.

Ed Kolman claims a riot of new
ideas upon returning from the Auto-
motive Service Industries Show and
the annual sales meeting of the Kester
Solder Co., held in Chicago.

Bert Knight, of the W. Bert Knight
Co. in Los Angeles, announces new
quarters for his company at 908 W.
Venice Blvd.

Norman B. Neely, another West
Coast member, announces his appoint-
ment as western distributor for an
acetate shaving collector, made by the
Lakeside Supply Co.

Saul Shapiro of Los Angeles, has
been appointed California representa-
tive of Nash Radio Products, Inc., of
St. Louis.

Jim Kay, Tulsa, Okla., has been
made factory representative for the
Universal Microphone Co., in Okla-
homa, Kansas, western Missouri, and
Arkansas.

Howard Radio Co., 1735 Belmont
Ave., Chicago, has appointed Richard
A. Hyde, 4253 Quitman St., Denver,
to represent them on amateur receiver
sales for Colorado, Utah, Wyoming,
and New Mexico. H. E. Walton has
been named representative for Michi-
gan and Indiana with headquarters at
1014 Francis Palms Building, Detroit.

Miss Helen Staniland, jobber sales
manager, Quam-Nichols Co., announces
the appointment of William E. Mc-
Fadden, 256 E. Gates St., Columbus,
Ohio, as representative for Indiana.

Monarch Sales Co., Inc., representa-
tives of Kadette and Freed-Eisemann
radios and Casco Products, Inc., are
now located in larger quarters at 230
Fifth Ave., N. Y. City.

Dr. Ralph L. Power, 407 I. N. Van
Nuys Bldg., Los Angeles, has been ap-

pointed American representative of
newly-formed Stannage Pty., Ltd.,
makers of radio equipment.

William E. McFadden has opened an
office at 256 E. Gates St., Columbus,
Ohio, and will act as manufacturers'
representative in Ohio, Indiana and
Kentucky for Standard Transformer
Corp., The Ohmite Mfg. Co., E. F.
Johnson Co., Carron Mfg. Co., Crowe
Name Plate and Mfg. Co., The Halli
crafters, Inc.

RADIO INTERFERENCE FILTERS

Like all C-D products — Quietone Radio Interference
Filters were tested under exaggerated "life" condi-
tions before being introduced to the industry. That's
why we can say with confidence . . . "THEY AC-
TUALLY WORK."

Don't overlook this opportunity to increase your
sales with little or no effort. Extremely simple to
install, unobtrusive in appearance and available in
three colors to match room interiors, C-D Quietones
were designed for minimum sales resistance. On your
next call demonstrate Quietone — and see how easy it
is to increase your profit on each and every call.
Remember — for new profits demonstrate C-D
Quietones, the interference filters backed by the
twenty-nine year C-D seal of quality. Attractively
priced to retail from $1.00 up. Cat. No. 166A
on request.

Product of the world's largest
manufacturer of capacitors.

CORNELL-DUBILIER
\electbic corporation

f 1022 Hamilton Blvd., So. Plainlitld. N. J.
Cable Addreu: ■CORDV

DEPENDABLE RADIO

Radio Today

MEN WHO ARE STABILIZING
RADIO-PARTS SALES

(One of a series)

The history of Robert F. Herr, man-
ager of the parts and service division

Robert F. Herr

of Phileo Radio & Television Corpo-
ration, is very much like the history
of Phileo itself.

Though only 38 now, Bob Herr's ca-
reer began more than twenty-one years
ago with the Philadelphia Storage
Battery Company. He has been iden-
tified with Phileo batteries or Phileo
radios ever since. However, his first
stay with Philadelphia Storage Battery
was very brief. He joined the com-
pany in March, 1917, but left as soon
as he was 18 to enter the Army.

After seeing service at the front in
France, with the anti-aircraft forces,
Bob returned directly to Philadelphia
and resumed what he had been doing
before the World War had interrupted
him — working in a testing laboratory
for storage batteries.

Philco's parts and service division
started with Bob Herr, and Bob has
been the dominating force ever since.

After serving an apprenticeship in
the lab, testing storage batteries, he
moved on to radio batteries when they
became important commercially. From
that point, he soon took charge of
testing of socket powers when Phileo
moved into that field.

During the interim, Bob had been
continually studying at night, both at
home and at school.

Educational work

When Phileo moved into the radio
field, Bob Herr found his knowledge
stood him in good stead. He spent five
years traveling into every nook and
cranny of the U.S.A., engaged in "edu-
cational" work with Phileo distribu-
tors. In fact, he and Sayre Ramsdell,
now vice-president, and Harry Boyd
Brown, now national merchandising
manager, were the trio who took the
first Phileo radio set, the old Model
511, around the country for presenta-
tion at dealer meetings.

From these years of traveling, Herr
discovered the parts requirements and
service needs of the radio retailer.

When he returned to Philadelphia,
dealers and distributors began to write
in, asking for parts and information
on service. Philco's parts and service
division rapidly began to form around
this flood of inquiries until it now does
an annual business totaling millions,
with almost 15,000 different parts in
stock and 125 men working on some
phase or another of parts merchan-
dising.

Completely directing all this activity
is Herr, the original parts and service
division.

Bob's second and third biggest in-
terests in life are ocean fishing during
the summer, and indoor tennis dur-
ing the winter.

What's his biggest interest? You
guessed it — radio.

TESTIMONIALS TELL ALL

Almost every radio dealer has list-
ened to grateful words after he licked
interference on a receiver. But it re-
mained for the Sico Electric Radio Co..
258 Lexington Avenue, New York City,
to get it in writing.

In the front of their window, Sico
displays six impressive testimonials
from thankful Murray Hill residents.
The framed letters feature Sico's abil-
ity to analyze purely local condition?
that play hob with Gotham reception.
One puff mentions a check for $225 in
payment of a job, which is sure to im-
press prospective service customers.

The Utah Service-Pak
consists of this cabinet
plus a stock of 79 essen-
tial replacement parts.

Sold only through recognized jobbers.

pVERY active service man
■*-J should have one of the new
Utah Service-Pats — for building
bigger profits and maintaining
a normal stock of essential
parts economically.

The new Service-Pat provides
important economies—it saves
time and space — it reduces costs
— it safeguards parts — it per-
mits a perpetual inventory to be
kept easily.

Ask your jobber to show you
the attractive kit — it is 17" x. 39"
x 10". In one convenient, com-
plete, easy-to-keep-up minia-
ture stock room you can stock
practically all your replacement
parts essentials. The following
high-grade Utah parts are in-
cluded: 35 Assorted 10- Watt
Vitreous Resistors, 6 Assorted
^o-Watt Adjustable Vitreous
Resistors, 16 Assorted Volume
Controls, 6 Volume Control
Switches, 3 Assorted Chokes, S
Assorted Audio Transformers,
3 Assorted Universal Output
Transformers, 4 Assorted Power
Transformers, 1 5" Electrody-
namic Speaker. The Utah Ser-
vice-Pak also accommodates
condensers, vibrators, etc., to
complete the stock of essential
parts.

So service man should be
without this kit of minimum
stock essentials. The Utah Ser-
vice-Pak Is Priced So Low You Can't
Afford to Be Without It.

Tear this page out as a re-
minder to ask your jobber to
show you the new Utah Service-
Pak. If he doesn't have one,
write us direct for complete in-
formation.

UTAH RADIO PRODUCTS CO. "JS £ 93

CHICAGO, ILL • Cable Address, UTARADI0- CHICAGO

February, 1939

AUTO ANTENNAS <*-

NEW! <-

DIFFERENT!
PATENTED!

No DRILLING ... NO
MARRING OF CAR!

Antennas are m^de of ALL BRASS
STAINLESS STEEL, and guaranteed
rustproof for the life of the car. Last
word in value . . . good looks . . .
and easy installation. No drilling.
And there are 8 more powerful reasons
why you should demand ICA Universal
Bracket Cowl Antennas. WRITE FOR
8-PAGE ILLUSTRATED FOLDER now
while you think of it.

INSULINE CORP.
OF AMERICA

25 PARK PLACE
NEW YORK, N. Y.

BOOK REVIEWS

RADIO TROUBLE-SHOOTER'S
HANDBOOK

By Alfred A. Ghirardi

The new Ghirardi handbook features
274 pages of receiver case histories for
over 3,300 models. The most likely
difficulties are listed for numerous
symptoms for each model.

Almost 50 pages are devoted to I.F.
peaks for practically every known re-
ceiver model. And to aid the ser-
viceman in spotting defects, there are
trouble-shooting charts for both auto
and home sets.

Other sections deal with auto-radio
installation, elimination of ignition in-
terference, and wiring diagrams of au-
tomotive electrical systems. Resistor
charts, color coding, conversion charts,
radio formulae, tables, and tube char-
acteristics are handily arranged.

518 pages, SV2 x 11 inches, go to make
up the book which is priced at $3.
Published by Radio & Technical Pub.
Co., New York, N. Y. — Radto Today.

The third edition of "Photoelectric
Cell Applications" is now available
from Pitman Publishing Corp., 2 W.
45th St., N. Y. City, cost $4. Written
by R. C. Walker and T. M. C. Lance,
it deals with technical and industrial
uses of the cell.

LIGHTWEIGHT
COMPACT
PORTABLE

THOUSANDS of ONAN ELECTRIC PLANTS are
supplying ALTERNATING CURRENT all over the
World, for Lighting, Operating All Appliances and
Powering RADIO TRANSMITTERS and RECEIVERS
for Amateur and Commercial Operators.
PORTABLE ONAN PLANTS are Operating Public
Address Systems, Sound Truck Apparatus, Moving
Picture Projectors, etc. Others are installed in
Public and Private Buildings, to provide Electric
Service in case of Power Line Failure. Many of
these have prevented financial losses and even loss
of life in such Emergencies.

ONAN ELECTRIC PLANTS are Dependable, Econom-
ical and Long-lived. Types from 350 to 5,000 Watts
carried in stock. Models include 110 or 220 Volt,
AC— 12, 32 and 110 Volt DC— also Dual Voltage
AC-DC Units. Furnished in either Manual, Full
Automatic or Self-Starting Types. Shipped READY
TO RUN. Prices start at $99.

WRITE FOR DETAILS AND PRICES

D. W. ONAN & SONS

596 Royalston Ave. Minneapolis, Minn.

* MISS JONES

led

is marnea now . . .

She'll tell her husband how 300c! your service
has always been and he too will have you do
their radio repairs. That's the way business grows.
Use dependable Ward Leonard Replacements.
They stand up, thus help make satisfied cus-
tomers. Send for Price List 507.

WARD LEONARD ELECTRIC CO.

40 SOUTH STREET, MOUNT VERNON, N. Y.
Please send me Price List 507.

Name

Firm

Address

City State

"DYNAMIC CONDUCTANCE"
TUBE TESTER

• Consolidated is proud to offer the new, up-to-the-
minute Model 9000 "Dynamic Conductance" Tube
Tester. Engineered to give top performance. Built
to take full advantage of greater accuracy afforded by
dynamic mutual conductance circuit. Sells for only
$37.50. See your jobber today!

- = ASSOCIATED ■ , ^

516 S. PEORIA ST. CHICAGO, ILL.

Radio Today

. INDEX •

ADVERTISEMENTS

Page

AEROVOX CORP 46

AMER. TELEV. & RADIO CO 49

AMPERITE CO 5

ARCTURUS RADIO TUBE CO 42

ASTATIC MICROPHONE LAB., INC 55

CENTRALAB 52

CLAROSTAT MFG. CO., INC 56

CONSOLIDATED WIRE & ASSOC. CORPS... 54

CORNELL-DUBILIER ELEC. CORP 52

CROSLEY CORP 34, 35

CROWE NAME PLATE & MFG. CO 46

GALVIN MFG. CORP Cover IV

GENERAL ELECTRIC CO Cover II

GENERAL INDUSTRIES CO 45

HYGRADE SYLVANIA CORP 2

INSULINE CORP. OF AMERICA 54

INTERNATIONAL RESISTANCE CO 50

JANETTE MFG. CO 40

KEN-RAD TUBE & LAMP CORP 52

MALLORY & CO., INC., P. R 1

MEISSNER MFG. CO 4

MILLION RADIO & TELEV. LABS 44

NATIONAL UNION RADIO CORP 51

OHMITE MFG. CO 49

ONAN & SONS, D. W 54

PHILCO RADIO & TELEV. CORP.

24, 25, Cover III

PIONEER GEN-E-MOTOR CORP 42

PRESTO RECORDING CORP 45

RADIO CORP. OF AMERICA 3

RADIO SERVICEMEN OF AMERICA. INC... 44

RAYTHEON PRODUCTION CORP 21

RCA MFG. CO., INC 28. 29, 30, 31

READRITE METER WORKS 50

RIDER, JOHN F 56

SERVICE INSTRUMENTS, INC 39

SIMPSON ELEC. CO 38

SPRAGUE PRODUCTS CO 40

SPRAYBERRY ACADEMY OF RADIO 55

STAR MACHINE MFRS., INC 48

TRANSFORMER CORP. OF AMERICA 47

TRIPLETT ELEC. INSTRUMENT CO 48

TUNG-SOL LAMP WORKS, INC 49

UTAH RADIO PRODUCTS CO 53

WARD LEONARD ELEC. CO 54

WARD PRODUCTS CORP 56

WEBSTER-CHICAGO 43

WHOLESALE RADIO SERVICE CO.. INC.. 50

While every precaution is taken to insure
accuracy, we cannot guarantee against the
possibility of an occasional change or
omission in the preparation of this index.

JOBBERS

LOUISVILLE, Ky— Peerless Sound
Equipment Co. moved to 912 S. Second
St., and added Aerovox condensers to
its lines. The new location triples
Peerless' room and provides for ade-
quate parking facilities.

MEXICO CITY— Famed night club
El Patio was turned into a convention
hall for 75 Philco dealers at a recent
meeting sponsored by Philco-Bush, S.A.
and American Steel Export Co. Carlos
Bush was toastmaster.

Farver Radio Supply Co., 534 Second
St., Portsmounth, O., announces the
recent modernization of their store
and the addition of new lines of stock.
They are soon to bring out a complete
new winter and spring catalogue.

The Chicago Musical Instrument Co..
30 E. Adams St., Chicago, 111., has
been made distributor for a new line
of sound recording equipment and
discs made by the Presto Recording
Corp. The selling price is $275 to
$595.

Herbert H. Horn, 1201 S. Olive St.,
Los Angeles, is now exclusive distrib-
utor in Southern California for Ad-
miral radios.

Presto Recording Corp. has named
Chicago Musical Instrument Co., 30
E. Adams St. to handle its new record-
ing equipment and discs.

American Record Corp.. new CBS
affiliate, has chosen the Roycraft Co..
1625 Hennepin Ave., Minneapolis, as
its northwest distributor, covering Min-
nesota, Iowa, North and South Dakota
and western Wisconsin. E. T. Christ-
man has been named manager of the
new department, which will handle Co-
lumbia, Brunswick and Vocalion discs.

SOUTHERN JOBBERS STIR
INTEREST IN RECORDS

The merchandising of records in the
Baltimore and Washington areas got
a boost recently when Southern Whole-
salers, RCA distributors there, held a
big dealer meeting on the subject of
promoting Bluebird records.

Tom Joyce, RCA Victor advertising
manager, appeared at the meeting with
a dramatically illustrated talk on "the
scientific and technical contributions
which have greatly improved the qual-
ity of recording and reproduction." Mr.
Joyce also pointed out that radio was
the friend, and not the enemy, of the
phonograph, declaring that "Millions
of people daily hear fine dance music,
opera, symphony, etc.; thousands of
those who listen will want to hear the
music again and again. And that means
more record sales."

Also on the program were J. M. Wil-
liams, H. P. Brightman, William E.
O'Connor, William J. Kelley, Edward
Denham, Joseph Camp and A. J. Mc-
Gettrick.

D^DT>S^J^DK

!
i

H^crf™^*" ■*!

lit

■ i

■

Dramatically New!

Astatic MIKE -LITE

Designed to Meet the Modern De-
mands of Orchestras, Dance Bands,
Entertaining Artists and Speakers.

• This is a beautiful, high quality,
Astatic crystal microphone with two ad-
justable spotlights that throw a flatter-
ing halo of soft, warm, shadowless light
upon the features of entertaining artists
and speakers. Complete with Model 1-3
Crystal Microphone, as illustrated, stand,
transformer and cables, ready to plug in
any light socket, $62.50. Prices with
other Astatic Microphones on request.
Lamp assemblies may be purchased sep-
arately if desired.

See Jobber or Wrife for Literature

Astatic Microphone Laboratory, Inc.

830 Market St. Youngstown, Ohio

Licensed Under Brush Development Co. Patents
Astatic Patents Pending

SERVICEMEN
BOOST YOUR SERVICE
PROFITS -

• Radio is rapidly becoming
more technical. Competition demands
that you know your "stuff". You must
have a better- than- average technical knowl-
edge to do more jobs quicker and with
greater efficiency.

That's why SPRAYBERRY ADVANCED
"MASTER SERVICE TRAINING" was de-
veloped. It was the first training (estab-
lished 1932) of its kind for men already in
the Service business, and it is still by far
the finest, most practical and most complete.
Includes over 50 new lessons, clear and sim-
ply written, on almost every essential Radio
repair subject. Including latest TELEVISION
instruction. It's a compact, "all-meat" type of
Training in Set Testing, Repairing, Parts
Testing, Trouble Shooting, etc.

00 BETTER JOBS

QUICKER

Bb It is not a beginner's course, it is writ-

■ ■ **n f°r men a^cady in the Service business.
"P ■ It shows you the easiest ways of doing the
hardest jobs. Shows you tinre-saving short-
cuts besides training you in actual business-getting
methods. Many Servicemen have easily paid for this
splendid Course out of increased earnings. Sold »n
terms as low as $2.00 down — $3.00 per month with
iron-clad MONEY-BACK Agreement.

Don't fall into the rut of being satisfied with your
present earnings. Self-improvement is the surest way
to greater usefulness and bigger pay. I>et me send you
complete information at once. For your own sake,
don't put it off.

RUSH Coupon for FREE Facts

r ^—^—^—^— — ^—^—^—^— — — — — —

I SPRAYBERRY ACADEMY OF RADIO
1400-B University Place, N. W.

I Washington, D. C.

Please send, without obligation, complete de-
tails of your MASTER SERVICE COURSE.

Name

I Address

| City State

I (Paste on penny postcard or mail in envelope.) |

February, 1939

John F. Rider, recognizing the dif-
ficulty presented by the many de-
velopments in Radio will, during the
year, release a long list of new
books especially written for the
serviceman. Know Theory! Keep
Ahead of a Fast Moving Industry.

Books on this timely subject will cover
all phases — including Light — Photo-
Electric. Cells — Synchronization.

1Uw?o

• •

The high state of development in this
field makes it necessary that you know
its theory. Rider will give it to you.

liaAjUb SiAAAjUtW

There will be SIX new books that will
tell, in the easy to understand Rider
style, how to save time in servicing.

UAl/L Ok CtiWlAi,

Rider Manual Volume X will be issued

in the Fall — covering 1939-40 sets.

Many New Features!

404 Fourth Ave.
New York City

Leon Adelman, popular Cornell-
Dubilier sales executive, whose
smiling countenance is known
to parts-jobbers and radio men
in every state in the U. S.

United Transformer Corp. took pos-
session of a new and larger plant at
150 Varick St., N. Y. City, as of Feb.
1. Offices are there, too, and the set-
up is thirty times bigger than UTC
original home, opened in 1934.

FREQUENCY MODULATION
EXPERIMENTAL

(Continued from page 17)

Major Armstrong states that there
will be but little increase in the cost
of producing a radio set that will
handle both frequency and amplitude
modulated broadcasts on the ultra-
high frequencies. So from the eco-
nomic angle there is nothing to feai*.

With the frequency - modulated
transmissions the dealers will be in
a position to demonstrate real high-
fidelity and static-free reception. With
better reception, it is very likely that
the public will again turn to higher-
priced sets capable of receiving the
full benefit of the possible higher fi-
delity. But all this is in the future.

Also these TJ-H-F receivers can be
used to receive the audio part of the
television broadcasts, so when these
sets for frequency modulation come
of age, they will fit perfectly into the
tele set-up.

But all these optimistic possibili-
ties about frequency-modulated trans-
missions are not going to buy today's
bread and butter. Smart dealers will
recognize it only as something for the
future — they will sell today's present
receivers and broadcasting system.
They will explain to the public that
they should buy a radio set today, for
they will continue to use it for years
to come — that before it becomes obso-
lete because of changes in the broad-
casting system, they will want a new
set.

Plug-In

RESISTORS
for any set

CLAROSTAT pioneered
this handy type of
voltage-dropping resis-
tor for AC sets.

Largest line of exact-
duplicate replacements.

Comprehensive listings
including cross-index
of different type num-
bers.

Minimum number of
universal types for
servicing most sets.

Handy Plug-In Resis-
tor Tester. Indispen-
sable. Only $7.45 deal-
er's net cost.

J^filr local Jobber to show you the
■£»»■»■ new Plug-In Resistor Tester
and complete line. Ask for latest listing.
Or write direct.

CLAROSTAT

■^CLaROSUl

\®4

>1 \ > I IK Tl III .N i. < O.

Inrurpiifnlcil

2»r» Xorlli Sixth SI.
Ilrooklvn. >. Y.

AERIALS

ARE

EASY TO SELL
-EASY TO INSTALL

Write

for new catalog of Ward's
complete line of low-priced
manufacturers - approved
aerials for car and home-
also get on mailing list for
free magazine packed with
selling and service tips.

PRODUCTS
CORR

WARD BLDG.

CLEVELAND, 0.

Radio Todav

•

|Hi

STORE Traffic — that's what you want !
And that's what Philco brings the radio
and appliance dealers of America in a
COMPLETE new line of Philco Dry Batter-
ies FOR ALL PURPOSES. Radio batteries,
as always; but now, in addition, dry cells
for every conceivable purpose — flash lights,
door bells, ignition, everything! There is a
tremendous demand for dry cell replace-
ments. They mean quick, easy sales — good
related items to attract people to your
store . . . Big Repeat Sale items!

For over a quarter-century, Philco has been
identified as a leader in the battery field.
The name PHILCO — in the battery industry
as well as in the radio industry — always has
been synonymous with the highest stand-
ards of design, manufacture and dependable
service. Today, in its new, complete line of
Dry Batteries, Philco offers the advantage
of special formulas and improved construc-
tion developed in the great Philco research
laboratories. Ask your Philco distributor
now for a catalog giving full information.

PHILCO RADIO & TELEVISION CORPORATION

6 TUBES... 4 PUSH-BUTTONS
FITS ALL CARS

This outstanding 2-unit "Leader" is the talk of the
auto radio industry. Look what you can offer
your trade at the lowest price in Motorola history.
4-station automatic tuning — each button can be set
for any station in any sequence and as close
together as desired. Also Manual Tuning. 6 Tubes —
using latest Loktal compact type. Separate
oversize Electro-Dynamic Speaker.

For 1939 Motorola has a complete line of
receivers to Fit and Match every car. Priced
from $24.95 to $69.95.

NOW! GET OFF TO A FLYING START
MAKE BIG PROFITS SELLING MOTOROLA

""trie Pushbutton
Controls that Ffff and
Mafch *• Instrument
Panels of All 1939 Cars

GALVIN MANUFACTURING CORPORATION • CHIC

WORLDS FAIR NUMBER Combined with RADIO TRADE DIRECTORY
Time-Map of Radio. Looking Ahead. * * * n^LJ

Sound and Parts Opportunities #Vl/\lvv*l

Ooei the kulhtes

DUMPING

POOR CABINETS

PRICE CUTTING

PERIOD-STYLED RADIO

ou want

an EXTRA MARKET

with NEW SELLING POWER

and EXCEPTIONAL PROFITS

plus

PROTECTION OF INVENTORY
RELIEF FROM CUT-PRICE COMPETI-
TION and a line that NEVER BECOMES
OBSOLETE

ett we

tebeat

the way to get this extraordinary mer-
chandising advantage is to FEATURE
AND PUSH

&£nmswick^

—RADIO AND COMBINATIONS

IN PERIOD FURNITURE
—GOOD TWELVE MONTHS IN

THE YEAR

A MERICAN homemakers are more furniture conscious today than
-*-*- ever before. They will buy higher priced radios and phonograph
combinations if they are housed in period-style furniture that har-
monizes with their home decorations. When they buy Brunswick
radios they do not need to buy two pieces of furniture when they
only require one.

That there is a definite need for radios and phonograph combinations
in period-style furniture is evidenced by the tremendous amount of
publicity given the Brunswick models in magazines and newspapers.
(Housefurnishing editors know what the public wants and considered
it news for their readers to tell them about the Brunswick radios and
phonograph combinations in authentic period furniture cabinets.)

Go after every furniture-minded buyer in your market. Let them know
you sell Brunswick radios and phonograph combinations in authentic
period furniture commodes and tables that will harmonize with the
furniture in their home.

It will pay you well to vigorously merchandise Brunswick radio and
phonograph combinations — you make more profit on Brunswick than
on other makes and you will definitely lift the price level in your radio
department.

LIST PRICES FROM $49.50

Send for Illustrated Folder

BRUNSWICK RADIO DIVISION

Mersnton Brothers Corporation
Executive Sale* Offices: 206 Lexington Avenue, New York City

jgtUHSuritk - A Dependable Name for 93 years

Best! by Test

Insist on Mallory—
Buy the best —
They cost no more !

Mallory Vibrators have won overwhelming pref-
erence as original equipment in the majority of
auto radio receivers by "Show Down" tests. Tests
and long life records have settled the question
of "what vibrator to use" indisputably in their
favor. Manufacturers find them better. That's
why it is no wonder that Mallory Replacement
Vibrators lead the field.

Only the Second Edition Mallory- Yaxley
Radio Encyclopedia gives you all data on
every Vibrator application. 1 1 covers every
servicing problem — you cannot afford
to be without it. Ask your distributor.

P. R. MALLORY & CO., Inc.
INDIANAPOLIS, INDIANA

Cable Address -PELMAUO

RADIO TODAY, March, 1939, Vol. V, No. 3, published monthly by Caldwell-Clements, Inc., 480 Lexington Ave., New York, N. Y. Subscription
price U. S. and Latin American countries, $1.00 for 2 years; Canada: $1.25 for 2 years. All other countries. $2.00 for 2 years; single copy, March
Directory Issue, 25c. Entered as second-class matter July 24, 1936, at the post office at New York, N. Y„ under the Act of March 3, 1879. Printed
in U.S.A. Member of A. B. C. Copyright 1939 by Caldwell-Clements, Inc.

COST-SAVERS
TIME-SAVERS
PROFIT-MAKERS

Tte M*r UTAH

Sewtce-Pak

More profitable servicing is made possible by the new Utah
Service-Pak. Every active service man needs one — should have
one. And it's priced so low you can't afford to be without it.

The Utah Service-Pak includes a stock of essentials and
accommodations for additional parts which are basic neces-
sities for normal radio servicing. The attractive kit, 17" x 39"
x 10", is actually a complete, convenient, easy-to-keep-up
miniature stock room. It provides important economies — it
saves time and space — it reduces costs — it safeguards parts —
it permits a perpetual inventory to be kept easily.

Make the savings provided by the new Utah Service-Pak
and add them to your profits. Phone or write your jobber
today — ask him to show it to you. If your jobber can't supply
you, write us for complete information.

Sold only through recognized jobbers.

UTAH RADIO PRODUCTS CO., Chicago,///.

Cable Address — UTARAD I O-CH I CAGO

DEALERS NET PRICE $2995

Including Cabinet

THE NEW UTAH SERVICE-PAK

contains the following high-grade
UTAH products: 35 Assorted 10
Watt Vitreous Resistors, 6 Assorted
25-Watt Adjustable Vitreous Re-
sistors, 16 Assorted Volume Con-
trols, 6 Volume Control Switches, 3
Assorted Chokes, 5 Assorted Audio

Transformers, 3 Assorted Universal
Output Transformers, 4 Assorted
Power Transformers, 1 5" Electro-
dynamic Speaker. And it will ac-
commodate UTAH vibrators, con-
densers, etc.. to complete the nor-
mal service stock.

ASK YOUR JOBBER

IF HE CAN'T SUPPLY
YOU — WRITE US

RADIO TODAY

Model CH-246 (In Ivory Plaskon) • 5-Tube
AC-DC Superheterodyne. (7-tube perform-
ance) • American Broadcasts and Police Calls
• Electro Dynamic Speaker • Automatic
Volume Control • Built-in
Antenna • Streamlined ivory
plaskon cabinet

$12.95

Model CE-259 — SELF-POWERED PORTABLE
— For Instant Operation — Indoors and Out-
doors— 5-Tube Superheterodyne • American
Broadcasts, Police • Automatic Volume Con-
trol o Permanent Magnet Dynamic Speaker
• Built-in Antenna. Rugged case covered
with durable tan and brown
material. Weighs only 15

lbs

COMPLETE

$29.95

Now — Build PLUS

Business with the
Sensational

"EMERSONETTE"

In Walnut.
Red, Green, Ivory 50r Extra

Making merchandising history —
opening up new avenues to retail
profit — stepping up business on ALL
Emerson Models — no wonder all of
America — including all WISE deal-
ers—is going EMERSON!

Get on the bandwagon and
watch your safes lump!

Model BM-242 — COMBINATION RADIO-
AND-PHONOGRAPH. 5 Tubes (incl. ballast
tube) AC • American Broadcasts, Police •
Electro Dynamic Speaker • Automatic Over-
load Control • Built-in Antenna.
Phonograph: Constant Speed Electric Motor
for AC Operation • Crystal Pick-up • Plays
all size lecords up to and in-
cluding 12-in. • Hand-rubbed
walnut finish cabinet

$29.95

Ask Your EMERSON Distributor NOW for New Broadside With Complete Details of EMERSON "Multiple Sale" Proposition

EMERSON RADIO AND PHONOGRAPH CORPORATION

World's Largest Maker of Small Radios

111 Eighth Avenue, NEW YORK, N. Y.

Cable Address: EMPHONOCO, N. Y.

MARCH, 1939

NEW
STREAMLINED FOR SALES ACTION!

Six
Sizzling

New
Numbers

G-86

NEW G-E WIRELESS
RECORD PLAYER

No Wires — No Con-
nections to Radio

Reproduces recorded music through the loud-speaker
of any radio — electrically. Operates from any loca-
tion— within hearing distance of radio set. No
wires — no connections to radio. Turns any radio
into a modern-type radio-phonograph combination.
Priced to sell in big volume.

ANNOUNCING TH

CaVy&i

E N*w q_E

No oerio«^no g
Req„iPes no "House Cu,

l'9ht We'9ht-Eosy

to carry!

Trent";

Light weight

fnm "s««ge. jU5t -l , . in the house- c «ny room

«* vacate fons - for T *">* Circuit A™ Super««ero<iyne

ling - Picnicking * For ^ 4 Tubei Self " Beaffi-*-scope

watch the G-E «r,
*• P°«ab,e radios"0"'" '"" —T «U

GENERAL @@ ELECTRIC

R4DIO TOD4f

BtOCKAPt THE WEST ROAD/
?T Tv^O MEN AND A WOMAN.'
^ BE CAREFUL! THEY'RE KILLERS!

Illinois Police Radio Blockade
Cuts Crime Careers Short!

The "radio blockades" of the Illinois State Police and police of many
other states have become famous throughout the country. In Cook County.
Illinois, the blockade begins in the "well-equipped police station WQPC pictured
below. Once the alarm is sounded, every road is blockaded immediately — cutting
off all escape channels for fugitives.

Fighting crime is no game for "'panty-waists." Police must be tough and
efficient. Squad cars must be swift and sturdy. And radio tubes must be de-
pendable— and ready for emergency flashes.

Anywhere sturdiness and long life under adverse conditions are required
— you will find RAYTHEONS. Yet they cost no more than the second-best tube.

RAYTHEON is your guarantee of the best turnover of any tube invest-
ment!

« * * I

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RAYTHEON

NEWTON. MASS. • NEW YORK • CHICAGO • SAN FRANCISCO • ATLANTA

"WORLD'S LARGEST EXCLUSIVE RADIO TUBE MANUFACTURERS

MARCH, 7939

PROFIT DEPENDABILITY: Sylvania quality is your insurance against kick-
backs— and that means dependable profits for you! Sylvania gives you a full
line of powerful sales-promotion items— to help you help your business!

The success of any retailing business depends
largely on the brand -merchandise sold. That is
why it's so important for radio tube retailers to
feature a line that offers 3-way dependability—
dependability in company, product, and above

all, in profit. You need full measure on each.

Take stock . . . then take Sylvanias. For you get
"all three" if you sell the Sylvania line— not only
company and product dependability— but profit

DEPENDABILITY, too!

Hygrade Sylvania Corp., Emporium, Pa. • Also makers of Hygrade Lamp Bulbs.

SELL SYLVANIA

SET- TESTED RADIO TUBES

RADIO TODAY

FINCH

M FIRST
in FACSIMILE

and proven leader ship I

The SYSTEM is PROVED-
STATIONS are ON THE AIR-
The MARKET is READY-

MANUFACTURING
BROADCASTING
MERCHANDISING

Under license by Finch Tele-
communication Laboratories, Inc.

FI7VCH Firsts

FIRST to open the NEW field for
HOME and NETWORK fac-
simile broadcasting.

FIRST system placed in actual op-
eration by a MAJORITY of the
MAJOR facsimile broadcasting
stations.

FIRST to PERFECT automatic,
FULLY VISIBLE, CONTIN-
UOUS-FEED HOME RE-
CORDERS requiring neither
liquids nor carbon transfer
sheets.

FIRST and only company to DE-
VELOP an AUTOMATIC,
SELF - SYNCHRONIZING
METHOD which permits home
facsimile recording in ALL AC
or DC POWER AREAS or for
BATTERY OPERATION.

FIRST to OPEN the NEW field
for facsimile broadcasting in
AIRCRAFT, POLICE and
OTHER MOBILE SERVICES.

Facsimile is HERE . . . NOW!
and FINCH is the Dominant System!

The FINCH FACSIMILE SYSTEM is the choice of the nation's
leading broadcasters, communication companies, manufacturers and
foreign governments. They prefer it — and pay a premium to get it.

One reason for FINCH superiority is this: it is the only system
that can be operated on ANY POWER SUPPLY— AC, DC OR
BATTERY. This is due to its automatic, self-synchronizing sys-
tem. The farmer with his windpower gets the same fidelity of
reproduction as the city man with his house current.

FINCH enables you to enter this tremendous new field — at the
very start — with proven equipment. Remember, RADIO had to
await the growth of broadcast stations. And TELEVISION is
still awaiting actual transmission. But FACSIMILE is on the air
NOW — transmitted by fifteen broadcast stations throughout the
nation, using Finch equipment.

Facsimile brings to the home what our great newspapers have had
for years — pictures by radio. Also news bulletins, sketches,
comics, advertisements — anything printable. Amazing as the prog-
ress has been, Facsimile is only on the threshold of its great place
in modern life. This is the time to start — and FINCH is the sys-
tem to START WITH. Write for complete information, demon-
stration, etc.

Facsimile Broadcast Stations Using the Finch System

Call

Power

Letters

Location

Frequency

Owner

Watts

WLW

Cincinnati

700 Kc

Crosley Corporation

50 000

WOR

Newark, N. J.

710 Kc

Bamburger B'casting Co.

50,000

WGN

Chicago, III.

720 Kc

WGN Inc.

50.000

WHO

DesMoines, la.

1000 Kc

Central B'casting

50.000

WSM

Nashville, Tenn

650 Kc

Nat'l Life & Ins. Co.

50.000

KSTP

St. Paul, Minn.

1460 Kc

Nat'l Battery B'casting

25.000

WWJ

Detroit, Mich.

920 Kc

Detroit News

5.000

WSAI

Cincinnati, 0.

1330 Kc

Crosley Corporation

5,000

WCLE

Cleveland, 0.

610 Kc

Cleveland Plain Dealer

500

WHK

Cleveland, 0.

1390 Kc

Cleveland Plain Dealer

2.500

WGH

Newport News,

Va. 1310 Kc

Hampton Roads B'casting

250

W8XAN

Jackson, Mich.

Sparks-Withington Co.

W2XBF

New York City

42.6 Mc

W. G. H. Finch

1,000

W2XUP

New York City

25.7 Mc

Bamburger B'casting Co.

100

WXNU

Cincinnati, 0.

26. Mc

Crosley Corporation

1,000

WSXNT

Cincinnati, 0.

31.6 Mc

Cleveland Plain Dealer

100

W10XGU

Miss Facsimile.

Cruiser 31.6 Mc

W. G. H. Finch

250

W10XDF

Plane NC9746

31.8 Mc

W. G. H. Finch 15 and 30

FINCH TELECOMMUNICATION LABORATORIES

INC.

1819

BROADWAY.

NEW YORK

Circle 6-8080

Plant and Aircraft Laboratory, Bendix, N. J.

View of Finch

Facsimile

Recorder

with cover

removed

MARCH, 7939

A Duck Can't Fly on One Wing!

nor can a dealer operate
satisfactorily on one special!

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^DELIVERED AND INSTALLED... 5-YEAR PROTECTION PUN $5.00 ADDITIONAL... PRICES SLIGHTLY HIGHER IN SOITH AND WEST

THE CROSLEY CORPORATION

POWEL CROSLEY, Jr., Pres. CINCINNATI

RADIO TODAY

giving them a prestige created by rarity of design, materials and craftsmanship —
and by the limitations of production which make them definitely LIMITED
EDITIONS — a series of models offered for only one season at the most — never
to be shown again in the exclusive Sparton line. Each Sparton model featured
in this Classic line will be tagged, LIMITED EDITION with pertinent information
printed thereon, giving the nature of the woods used in its construction, the
source of .the woods, type of chassis and number of tubes.

BEAUTY IS GIVEN MOTION
By the Swirl of Rare Imported Woods

These superb cabinets were designed by Sparton craftsmen using combinations
of New Guiana wood with Zebra wood inlay from British Guiana; Brazilian
Rosewood, dark in color with heart-figured grain; Satinwood from East India,
yellowish brown in color with a satiny lustre; rare quartered mahogany with
beautiful mottled grain, and fine walnut, warm brown in color combined with
dark overlay — the most highly prized cabinet woods blended by skilled artisans
to form modern versions of period themes in perfect harmony with today's
decorative modes.

New Features

Sparton Classic Radios embody the
ideal of perfection in sound reproduc-
ing instruments from the carefully en-
gineered superheterodyne chassis to
the fine speaker which makes audible
Radio's Richest Voice. All are full
range superheterodynes using the New
Type Bantam Tubes.

Amazing LOW PRICES

Despite the exclusive styling of SPAR-
TON Classic Radios they are priced to
compete with the lowest priced models
of conventional design.

Cibinet of New Cuiana wood with Zebra wood
inlay— concealed grill — 5-Tubc AC-DC superhet-
erodyne with AVC — dial light — 4-inch electro
dynamic speaker — 6" high — 5 deep— 8J4" wide.

With or Without
Underwriter Approval

Write TODAY for
INFORMATION

■WITHING

M4RCH, 7939

TWO NEW PHILCO PRODUCTS

. . . new opportunities to profit with Philco I

til

g1ves 26«/o more qu.cKY ^

A ref rise-tor that^^er Doo^es 26 ^ ^ refri^
teatur^he shelf ^ ^ convenience ^ and Uy

:;::r^7r^::::"otth

fl„ **. 4— 35SU*. ^tributor, -eluding

of any good retr g dlSt„b handislng

Get the compete story lS1Bg and

.. * Philco's big r>a<- ^„„servador Keirig j plan.

det:;iis° ** wai brinot srffic *» *-* ,Round

cta0y„- -ore! A Part ___^-— — \

pORTABtt AIR «•

• „ and Philco,

lng, aslo- -" p«c «package^«tt

, good radio. J° size.r?rand easily

conditioners for Q™***? * J, tech-

as jl50,or ^^tuing, P^mbmg°
installed . ■ • needed. _

nical knowledge n opportunity'. ^°

.„«al profit opp" rY home

A r^T . £»U Profit.- • -%!l eager
TRADE-INS • • ^ communlty *
and office in your

prospect. ^tfc powert**

. i \mkCool-v<ave a bart of

Yhilco backs lor*bandising ■ ■ • • *

«<^ff "a/ y r/r >Ro«^ *ro8ram-

the Vhilco AH

to sell
(or only

$15

DOWN!

Easily installed
in homes and
offices in less
than 30 minutes.

Wooel40-CW

For full details write, wire or phone your Philco distributor now.
Or address Philco Radio & Television Corporation, Philadelphia, Pa.

I l>H0N0CRAPHS

-4

PARrsJ^^Mat*moms (J-jBATr^

J —

o i-.- 1» CjT-/-- vV-.i*»^* -^.•jt-wi-Vt-'*--, r"---^ r*.i

itrthk&&***f}i&L'i,1

PHILCO ALL YEAR' ROUND

R4DJO TOD»r

©C1B 411017 fe

MR 28 1939 "

mm »#

Includins TELEVISION TODAY

MARCH, 1939

Mw---?xm(BenepuiotHo.1

In the days of ancient Rome, men
counted it a privilege to be citizens
of the Roman Empire. Civis Romanus
sum was a phrase which indicated the
highest distinction of the day.

And a similar distinction falls upon
all the men in Radio — whether they
supply the programs, or furnish the sets
with which millions listen.

• • •

Every radio man feels instinctively
a pride in his part in radio's great
achievements. Every radio man knows,
too, that his very vocation assumes a
a certain glamor among all with whom
he comes in contact.

For radio has proven itself without
parallel as a public benefit. It has
educated and entertained millions. It
has elevated public taste. It has sum-
moned new worlds of fine music to city
tenements and remote villages.

It has speeded news, and brought
stirring world events to the most iso-
lated listeners, even before the chan-
celleries of Europe knew the next turn
in international affairs. It has supplied
vivid drama, — both stage and real.
It has saved lives, at sea and in the
air. It has opened new social frontiers.
It has provided powerful new tools for
social betterment. All this it has done
at little or no direct cost to those

served most.

• • •

Meanwhile radio advances to new
fields of usefulness and service. New
undiscovered lands of radio possibilities
remain to be opened up. Radio's pub-
lic benefits expand and expand.

Measured by any yardstick, radio
is the twentieth century's supreme gift
to mankind.

Radio is Public Benefactor No. 7.

EDITOR, Oresles H. Caldwell; PUBLISHER, M. Clements; MANAGING EDITOR, Vinton K. Ulrich ; STAFF, Darrell Bartee, N. McAllister,
G. H. Mayorga, M. H. Newton, R. A. Neubauer, B. V. Spinetta; SALES MANAGER, M. E. Herring; R. Y. Fitzpatrick, 201 N. Wells St., Chi-
cago, 111. i CALDWELL-CLEMENTS, INC., 480 Lexington Ave., NEW YORK, N Y. Telephone PLaza 3-1340. Vol. V, No. 3. Copyright 1939.
Member Audit Bureau Circulations Front Cover Design by Alan Foster

Uestetdok

A Chart Tracing the History of Radio, Its Progressive Inventions,

PERIOD OF DISCOVERY OF RADIO FUNDAMENTALS

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MARCH, 7939

Sadie took Batk

Early days of wireless. Inventions and patents. Broadcast-
ing predicted. KDKA starts. Radio chaos. AC sets. Pro-
duction troubles. New improvements. "Radio is free I''

Winter's bite was in the air as two
young men huddled 'round a tele-
graph key that frosty noon thirty-
seven years ago. Outside the modest
cabin a huge kite bobbed in the
breeze, holding aloft its thin strand
of wire. Within, two pounding hearts
made the only noise.

Suddenly the wireless circuit whis-
pered and the young man clamped a
telephone receiver to his ear. He
listened carefully, tensely, as three
brief vibrations ticked in his ear. He
kept on listening, afraid to believe
what he had heard. Then he passed
the earpiece to his companion.

"Do you hear anything, Kemp?"
His voice trembled in spite of his
efforts to make it casual.

Kemp held the phone to his ear.

"Yes!" he exclaimed. "Three dots!
Why, that's England!"

Such was the scene on Dec. 12,
1901, when Guglielmo Marconi and
his assistant, G. S. Kemp caught the
first trans-oceanic wireless signals in
a small cabin near St. Johns, New-
foundland. Next day, the world knew
that words had been transmitted
through thin air, and marvelled, even
as cable companies shivered with fear
and forced the Canadian government
to oust Marconi from the land.

Dr. Lee de Forest today. The radio
inventor at his home in Los Angeles.

Behind the young Italian scientist
were years of hard work in experi-
menting. Further back was the dis-
covery of electro-magnetic waves by
Heinrich Hertz — the phenomena that
led to wireless. And there was Thom-
as Edison's work in lamp-filament
emission, which was to lead to James
Fleming's "valve" and Lee de Forest's
three-element tube.

That was Marconi's first victory,
and he was confident that wireless
held a great future. Calmly he packed
up his equipment and went to Maine
to continue his experiments with the
crackling "bug" that flung messages
into the air. But even Marconi could
not dream of things to come in wire-
less and its successor, radio. For
nineteen years wireless progressed
steadily, and then streaked like a
comet to make household radio pos-
sible— and change the life of the
world.

PIONEERS OF RADIO

But between Marconi and radio in
the home were many men, many in-
ventions, millions of dollars, heart-
break and hard work.

Reginald Fe-senden. brilliant, un-
commercial scientist spent two mil-
lion dollars and years of patient toil
developing the heterodyne circuit, the
continuous spark transmitter and oth-
er inventions. From tbe Schenectady
laboratory of General Electric in
1907 came the high-frequency alter-
nator, invented by a sturdy Scandina-
vian genius, Ernest W. Alexanderson,
a discovery that made wireless some-
thing more than a confusion of roars
and squeals. There was Lee de For-
est who fought the new science's? prob-
lems and patent battles over his am-
plifying tube with equal gusto. In
1910 he was broadcasting Caruso's
voice, and six years later he was to
-i-inl out election returns from the
Bronx, anil the voice of Vaughn de
Leath. Another prober into wireless
secrets was Edwin H. Armstrong,
whose discovery of tbe "feed back" or
regenerative principle in 1912 made
possible the advancement of radio.

David Sarnoff, too, was in the van-
guard of radio pioneers. Starting in
190fi as an office boy with the Amer-
ican Marconi Company, he rose
steadily in the wireless world, and in
1910 had the temerity to forecast
home radio. Along these lines he
wrote to his bos-. Edward J. Nally,

general manager of the wireless com-
pany:

"I have in mind a plan of develop-
ment which would make radio a
'household utility' in the same sense
as the piano or phonograph. The idea
is to bring music into the house by
wireless. . . . The receiver can be de-
signed in the form of a 'Radio Music
Box,' supplied with amplifying tubes
and a loudspeaking telephone. The
box can be placed on a table in the
parlor or living room, the switch set
accordingly and the transmitted
music received. There should be no
difficulty in receiving music perfectly
when transmitted with a radius of 25
to 50 miles."

SARNOFF'S VISION

Not only did Sarnoff call the turn
years ahead of time, but with re-
markable accuracy. He figured sets
to be sold at $75 would yield $75,000,-
000 over a period of three years. Ac-
tually, RCA got that amount during
its first three years of manufacturing
home receivers.

The Sarnoff prophecy was slowed in
fulfillment by the World War. But
when hostilities had faded, radio
spurted ahead. In 1919, the General
Electric Company was about to sell
some of its Alexanderson alternators
to the British Marconi Company
when U. S. Navy officials, Admiral
W. G. H. Bullard and Commander
Stanford Hooper, prevailed on them
not to sell even though the business
meant much in the post-war depres-
sion. These Navy men got the ear of
Owen Young, legal generalissimo of
the electrical firm and convinced
him of the need of keeping American
supremacy in wireless.

BROADCASTING STARTS

Out of these events came the for-
mation of the Radio Corporation of
America on Nov. 20. 1919, with Ed-
ward Nally as president. At first,
RCA confined itself to communica-
tions business ; it was the rival
Westinghouse Electric that initiated
broadcasting to the home. Dr. Frank
Conrad started it all with his uro-
grams on 8XK. He built up such a
group of listeners that the Home De-
partment Store in nearby Pittsburgh
advertised the sale of receivers. Con-
vinced by this event that home radio
was on the way, Westinghouse's Vice

RADIO TODAY

President Harry P. Davis agreed to
the construction of a radio station —
KDKA. When, on Nov. 2, 1920.
people tuned in on the Pittsburgh
wave-length to learn — hours ahead of
newspaper stories, that Harding had
defeated Cox for the Presidency.
home radio was launched jn a big-
way.

Then began the mad scramble. Be-
fore KDKA there had been perhaps a
half-dozen manufacturers of radio
components and some 30.000 ama-
teurs and experimenters. Bv the end
of 1921, 60,000 sets had been sold, and
in the next twelve months some 1,500
manufacturers jumped into the busi-
ness and sold the staggering number
of 1,500.000 sets for a total of $60.-
000,000.

EVERYBODY'S BUSINESS

Chaos was a mild word for the sit-
uation. Everyone sold radios —
plumbers, florists, drug and candy
stores, blacksmiths, and even under-
takers clamored for sales franchises.
In 1922 and 1923 as the IJY199 and
UV201-A tubes emerged to push the
crystal sets into the background, the
U. S. went radio mad.

Broadcasting, too. was making
great strides. From the rate of two
stations per month on August 1, 1921,
the number mounted to 99 new ones
per month on May 1, 1922, at an ap-
proximate cost of $50,000 each. And
this despite the fact that broadcasting-
then offered no source of revenue.
First station to be licensed by the
Department of Commerce was WBZ
of Spring-field, Mass., on Sept. 15.
1921. Soon followed WEAF. owned
and operated in New York City by
the American Telephone & Telegraph
Co., and WJZ, a third station of
Westinghouse.

There were other important firsts;
the first broadcast of a fight — the
Jack Dempsey-Georges Carpentier
tussles at Boyle's Thirty Acres in
Xew Jersey as announced by Major
J. Andrew White. The first experi-
ments, again by Dr. Conrad, in short-
wave broadcasting. The first in-
fringement suit brought by RCA to
establish its right to license manu-
facturers— against the A. II. Grebe
Co. The first chain broadcast — Jan.
4. 1923, linking WEAF and WNAC
of Boston.

OVERPRODUCTION

While Secretary of Commerce Her-
bert Hoover was trying to stabilize
broadcasting by assigning wave-
lengths in 1923, the radio industry
still was at sixes and sevens. In-
stallment buying moved in. But the
trade cycle went something like this :
new models in the fall with such en-
thusiasm on their reception that man-
ufacturers overproduced : slump in
sales for the early part of the year to
be followed by cut prices in the sum-
mer. Tremendous quantities of sets
were dumped in this manner. . . .
Despite the commercial chaos, radio

Edwin H. Armstrong, "feed-back"
and superheterodyne inventor, with Dr.
W. R. G. Baker of GE, tests new fre-
quency modulation.

continued to boom. The neutrodyne
circuit and Armstrong's superhetero-
dyne, introduced in 1924, skyrocketed
sales.

Besides there was too much in the
air to be missed. During 1925 and
1926 stations continued to improve
and grow more powerful. The Xew
York Philharmonic Society was put
on the air by Steinway Piano Co.
Atwater Kent astonished fellow radio
manufacturers by sponsoring an hour
of singing by Metropolitan Opera
stars. And on Nov. 21. 1926, the Na-
tional Broadcasting Company was
formed, and better programs at once
resulted.

A year later, when the dynamic-
speaker and the house current radio
made their bow. Byrd was detailing
his exploits in the Antarctic via
short waves to Westinghouse in
Pittsburgh. And by that nine, radio

sales had grown from $2,000,000 in
1920 to $500,000,000 and there now
were TOO radio stations. But the
number of manufacturers had shrunk
to 542.

In 1929, the screen grid tube ap-
peared to give radio sales a shot in
the arm, and also saw the formation
of the Columbia Broadcasting Sys-
tem. By the next year, NBC and
CBS boasted 200 stations in their na-
tion-wide chains. In 1933 NBC
moved into spacious studios at Rocke-
feller Center, which soon became
known from coast to coast as Radio
City. WLW chose 1934 to try out its
new power of 500,000 watts, and
everyone predicted a rise of super-
stations.

SALES HIT 8 MILLION

As the upturn came in business,
radio sales got better, and in 1935,
RCA set aside a million dollars for
television experiments. The next
year, 1936, saw radio reach a high
point with the sale of 8,250,000 sets
in twelve months.

Although by 193T, the number of
radio manufacturers had been cut to
some 150, improvements in sets went
right ahead. There were such things
as automatic frequency control and
push-button tuning to intrigue buy-
ers. But that was rivalled in 1938
when wireless remote controls and
record players, and even television re-
ceivers were put on the market.

Today, Radio looks back on a brief,
hectic but astounding history. From
a thing for the laboratories and ex-
perimenters, it has become a house-
hold necessity. There are some 41.-
000,000 sets in use. and broadcasters
spend about $180,000,000 a year to
provide programs for these sets.
While the printed and spoken word
is censored and changed to totalita-
rian will in other countries, Amer-
ican radio has emerged untrammeled
and free.

David Sarnoff and the late William Marconi, during the latter's visit to America.
The Italian pioneer of wireless died in Rome, July 20, 1937.

MARCH. 7939

JUutic OuuettukUies Ahead

Radios everywhere. Pocket receivers. Office radios.
Facsimile and television. Personal wavelengths.
Universal communication. Extending other senses.

Purchase of a new radio was far
from the mind of Joe Doakes as he
left his office on a fall day in 1941.
Joe's gray matter was concerned only
with the fact that the World Series
and a business trip to Boston con-
flicted.

Joe liked baseball, but he wanted
his job, too. All of which didn't stop
him from muttering under his
breath at such ill luck. Thinking
dolefully of a world in which business
cut such a wide swath out of pleasure,
Doakes turned into Larry Mahon's
radio shop, figuring on hearing an in-
ning or so before catching his train.

"Just my luck, Larry," he grum-
bled. "Here are the Yanks and
Giants practically locked in deadly
combat, and my boss flags me for
Boston."

The radio man grinned in sympa-
thy, then reached for a tiny package
on a display stand. It was no big-
ger than a prayer book. Mahon flicked
a button on it, pressed it to the ear
of his disgruntled friend.

"Say — it's a radio," he cried. "And
I can hear the Series ! Oh, boy !
Score's three-two in the fifth.''
Doakes clutched the miniature radio
to his ear. "Gosh, this is just the
thing for my trip !"

"And you can have it, too — for ten
dollars," the radio man replied.

Doakes didn't hesitate a moment.
He pulled a ten-spot out of his pocket
and tossed it to the dealer. "Just
what I've always wanted." he shouted,
dashing for his train.

RADIOS GREATEST YEAR

His excited customer gone, Radio-
man Mahon smiled to himself. Pocket
radios certainly were going like the
proverbial hot cakes, and it looked as
though they'd furnish a nice share of
1941 profits. Besides, there were tele-
vision receivers, still in the class field,
but going better each year. Combina-

Pocket receiver employing bantam
junior tubes, being used experiment-
ally by Salem (Mass.) police.

tions and records were selling well
and people had caught on to the idea
of "radio in every room" and were
Iniying small sets for just that pur-
pose. And to round out things nicely,
records were selling faster than they
could be pressed.

"It's a great year," mused Mahon.
"This business is getting better every
day."

And he was right. Industry statis-
ticians in October. 1941, predicted a
15-million-set year. Pocket radio had
swept the country; television stations
were being erected in all large cities,
and a million video receivers had
been sold. Of course they hadn't dis-
placed radio receivers, which were
1 ictter than ever — with a tuning at-
tachment that had captured the pub-
lic's fancy. From his armchair, the
radio owner had merely to announce

the call letters of the station he want-
ed to hear, and the set automatically
tuned to the corresponding wave-
length !

On television stations throughout
the country, news and stage programs
were being broadcast each night. In
sound broadcasting four giant net-
works were sending out elaborate
radio programs. But the chain sys-
tem hadn't hurt local stations. Ad-
vertisers found "spot" announcements
to their advantage in districts where
their product had special appeal.
More than a dozen super-stations of
500 kilowatt strength, flung their sig-
nals to the air.

FACSIMILE ARRIVES, TOO

Facsimile had become an active
factor in American life. Newspapers
of the air were broadcast on a sub-
scription basis to homes in suburbs
and country. City folk who couldn't
wait for papers also subscribed to this
service that printed the news right in
their home, hot off the linotype. Re-
porters groaned — for "sooops" were
less than minute wonders. Exclusive
news was quickly grabbed up by the
opposition, flashed in radio broadcasts
and in facsimile.

Auto radio was at a new peak for
reception and compactness, and was
standard equipment on even the low-
est priced cars. One manufacturer
was rumoring that next year, 1942.
he would put out an automobile tele-
vision set.

Farm radios graced every rural
home, many with facsimile attach-
ments. Portable sets were now con-
sidered a necessity in every comfort-
able home.

RADIOS EVERYWHERE
i

Office radios, too, had become a
potent sales factor, a million of them
being sold early in 1941 when the
Soviet Russia-Germany crisis devel-
oped.

While peace trembled in the bal-
ance, radio again proved its vital ne-
cessity to American life — even as it

The RCA Building at "The World of

Tomorrow" — New York World's Fair

— is in form of a radio tube.

RADIO TODAY

r-~— — - "TL

- rd

<*V

^11

JP '

::^*j

Crosley Building at N. Y. Fair, where facsimile and radio will be shown.

had in 1938 when Fuehrer Hitler met
Chamberlain at Munich. This time,
radio dealers were smart. They
equipped innumerable business offices
with sets, especially radios of the
silent type resembling office tele-
phones. These office radios localized
reeeption and didn't disturb other
workers. And so radio men cashed in
on the crisis.

Leaders of the television-radio in-
dustry were equally enthusiastic
about the future. Volume was boom-
ing, but overproduction was under
control. Merchandising problems had
been simplified. Radio dealers were
now "Home entertainment mer-
chants," handling small and large
radios, combination sets, records,
home-movie projectors, television and
facsimile receivers, electronic pianos,
and all the marvelous new musical de-
vices which, at the flick of a switch,
could reproduce the tones of any fa-
miliar string or wind instrument.

Radio was fulfilling the dreams of
its most ardent builders anrl devotees.

LOOKING FURTHER AHEAD

Meanwhile, as we turn our backs on
1941 and look further ahead, we find
progress in radio rushing along on a
dozen far-flung fronts.

Of widest promise, perhaps, is the
field of ultra ultra short waves — tiny
radio oscillations measuring hundreds
and thousands to the inch. Here lie
a wealth of channels ready for use. as
fast as apparatus is developed. For
it must be remembered that each time
the wavelength is halved, there are
immediately opened up twice the total
number of frequencies, or as many
more radio frequencies as were pre-
viously available in all the former
spectrum !

New broadcasting and communica-
tion possibilities crowd before us here.
Not only can each individual have his
own radio receiver; every inhabitant
might conceivably have his own spe-
cial wavelength, and his own radio
transmitter, capable of "calling" the
micro-wave channel of any person he
might want to reach. Tn our most

"Spirit of Electricity and Radio," as
depicted by Rockwell Kent for the
General Electric exhibit at N. Y. Fair.

intensely developed American metrop-
olis live not more than nine million
people. Yet nine million frequency
channels could be easily available in
this rich new frontier region of the
electro-magnetic spectrum. So that
each inhabitant could have his own
individual phone connection through
the ether.

PLENTY OF CHANNELS

Such availability of ample radio
channels would lift the restrictive
"ceiling" which has always hung
everywhere over radio and choked its
widest use. Plentiful channels at
last would open radio applications to
really widespread use in every activ-
ity of industry, business and home.
Besides telephones and intercom-
munication systems, there are all the
opportunities for machine remote
control. Teletypewriters and ac-
counting machines, instead of usiug
carbon copies, might turn out "orig-
inals" at half a dozen points — head
office, shipping room, accounting de-
partment, and branch offices con-
cerned.

Shortwaves might offer new oppor-
tunities even for power distribution
and transmission. Original minds
have not ceased to look for wavs to

supply actual driving power to ma-
chines, ships and airplanes through
power beams from reflector transmit-
ters. When one recalls that all the
energy we have on earth, arrived here
as "beam power" transmitted oyer
very short waves of the electro-mag-
netic spectrum, and that our autos
and planes today operate on the resi-
due of this energy, captured through
age-long processes of tree growth, an-
imal life and petroleum production,
it is not so unthinkable that our au-
tos and airplanes may some day be
operating directly by radio power!

EXTENDING FACULTIES

Radio so far has largely worked
chiefly to extend the human faculties
— to give new amplification to our
senses of hearing and touch and lat-
terly of seeing. In the last-named
field, it may eventually give us super
telescopes, with magnification possi-
bilities, which will make the new
200-inch glass on Mt. Palomar, as
inadequate as a 1920 crystal set!
(which is its true optical prototype.)

Radio may extend our other senses
and faculties. Smell and taste seem
to be, at bottom, oscillation senses, as
sound and sight are. Create the right
olfactory and gustatory frequencies,
and radio men may be able to let the
television audience also sniff the rare
perfumes of Arabia — taste the man-
goes of the tropics for themselves !

Along with television — Tel-olfac-
rion? Tele-gustation? Why not?

LIMITLESS POSSIBILITIES

Radio men still move in a field of
limitless possibilities.

Radio's chief assets are yet un-
known.

Radio manufacturers, distribu-
tors, dealers and service men still can
look forward to an unending parade
of new developments — new radio prod-
ucts on which to cash in !

MARCH. 7939

Sound is as important as lighting at the Court of the Seven Seas in Golden Gate Exposition.

faiqlA hlwte in Setting Sound

Public*s demand for better hearing achieved with
amplifiers. Unlimited sound possibilities exist in
industrial, educational and entertainment fields.

With the surface hardly scratched,
Sound has an extremely optimistic
outlook, according to leading sound
merchandisers and manufacturers.
New uses are heing found every day
that are forever increasing the num-
ber of potential prospects. Because
all this amplifier equipment uses
radio components, this sound business
will remain in the hands of the radio
industry as long as they go after it.

As in the lighting and illumination
field, where light intensities have con-
sistently increased; there is likewise
in sound, a growing need for increased
sound levels or intensities. Persons
should not have to strain to hear
what is being said or going on. The
fact that ordinary noise levels around
us are getting greater will unques-
tionably help to boom sound.

INDUSTRIAL POSSIBILITIES
UNLIMITED

Main use of sound will probably be
in the entertainment and educational
fields, and industrial applications.
While the first two uses are quite well
defined, the industrial possibilities
are only now beginning to be discov-

ered— and how these possibilities can
be increased and developed depends
entirely upon the resourcefulness of
radio and sound men.

Practically every time a group of
several dozen or more persons get to-
gether, there is a need for sound. Nu-
merous tests have been made that
show when an audience is noisy, it
is usually because they cannot hear
well — and consequently they shift
about noisily or disregard the main
program and talk to their neighbors.
In some circumstances there have
been reductions in the background
noise of more than 10 decibels after
the sound system is turned on. (And
for those tbat don't know, 10 DB is
a sound level ratio of 10.) Every
meeting place, therefore, is a pros-
pect for sound.

Entertainment places, one of today's
largest sound users, will in the fu-
ture continue to demand sound.
Patrons must be able to hear well for
proper enjoyment of what's going on.
Because many of these installations
have been made using cheap or im-
proper equipment, there will be many
modernizations and replacement of
this equipment in years to come.

MAINTENANCE AND
MODERNIZATION

Many of the components in even
the better of the old systems, such as
microphones and speakers, are quite
crude when compared with today's
new and improved types. Mainte-
nance and modernization are, and will
continue to be, good bets for the
technically inclined sound men.

Exhibits of all types require sound
if they are going to attract the full
quota of observers. At the N. Y.
World's Fair and the Golden Gate
Exposition there are hundreds of
sound systems helping to increase thf
capacity of the various free and paid
exhibits.

ANIMATED DISPLAYS THAT TALK

Animated displays should use sound
to tell the story and attract attention.
At the Chrysler Salon in New York,
speakers are installed in the cars
which tell about the features of the
cars as the hood, doors, etc., open and
close. In these displays, records are
employed, but live talent has been
used in other places with startling
results.

RADIO TODAY

Public speakers, politicians, min-
isters, etc., no longer have to confine
their talks to a single auditorium. By
using telephone wire connections or
recordings with an amplifier at the
remote points, it is possible to de-
liver talks when it is impossible to be
present in person. When recordings
are used, there is the further advan-
tage, that the talk can be reproduced
time and time again. In this day and
age when time is so valuable, it is
logical to expect a great increase in
the use of "canned" and remote de-
livery of speeches.

CENTRALIZED SYSTEMS PROFITABLE

Schools and institutions of all
types appear to be some of the best
prospects for sound. Centralized sys-
tems are available for every require-
ment at a wide range of prices. Edu-
cational authorities agree that sound
is a necessity if schooling is to keep
pace with tempo of today and the fu-
ture.

With only 7 per cent of the schools
equipped with sound, the possibilities
are there! The question is whether
or not the sound industry is capable
of merchandising the proper equip-
ment.

In industry, employee relationship
is more important than ever. Music
and sound have proved extremely help-
ful in this relationship — so helpful
that any industrialist is willing to
give audience to your proposal. The
foremost authorities on the subject
believe that it is possible to develop
this volume far above expectations.

PUBLIC APPRECIATES SOUND

From Webster-Chicago's General
Manager D. MacGregor comes this
significant prediction, "During the
next five years, the sound business
should win general public favor by
reason of constantly improved qual-
ity.

"Now, with manufacturers gener-
ally supplying apparatus of higher
quality; and with a growing corps of
fairly expert sound men in the field,
the public will come to know what
can really be accomplished by sound.
The result should be reflected in the
sales curve of every sound system
manufacturer, with the greater por-
tion of the business going to the in-
dustrial and institutional fields."

Optimistically, George Cole of
RCA's Commercial Sound Sales com-
ments, "New applications and uses of
sound, naturally, lead to refinements
of existing equipment and develop-
ment of new apparatus. This in turn
opens new and hitherto unsuspected
uses.

"In addition to the current well-
known applications of sound systems,
we feel now that its use in industry
presents sales opportunities of large
proportions."

Sam Ruttenberg of Amperite be-
lieves, "Sound amplification will ex-
pand mainly in two directions. First

MARCH, 1939

Every city and town is a sound prospect.

the increased use for entire stage and
distant pickup, and secondly increased
use of Kontak microphones for not
only boosting the volume but the
quality of string instruments such as
violins, pianos, guitars, etc. Installa-
tions of simpler systems will be done
more and more by radio servicemen
and radio and musical dealers. The
more complicated systems will only
be handled by sound specialists."

ARCHITECTS RECOMMENDING
SOUND

"We find that practically all new
public buildings, projected by Gov-
ernment or private interests, particu-
larly schools, hospitals, courthouses,
assembly halls, etc., embodied sound
systems in the original construction
plans," states David Bogen, manufac-
turer of sound systems.

"Invariably the specifications call
for elaborate systems and the sound
equipment manufacturer who wants
to share in this business will have to
build better planned and better bal-
anced systems. This should lead to a
decided trend of quality in the trade
and raise it to a higher plane."

In sound as in every other com-
modity, there is the merchandising
problem. Who is to handle the busi-
ness and how, is still a matter of
question.

MERCHANDISING PROBLEMS

"Merchandising must be more care-
fully studied in the future than in
the past years," is the advice of R. E.
Potts of Bell, "There has been too
great a tendency on the part of the
jobber to deal in package goods which
he can place in the hands of the deal-
ers without any constructive effort on
his part.

"The success in sound is dependent
on intelligent study on the part of
the jobber of the needs of the con-
sumer. The day of 'behind-the-
counter' sales is going. Jobbers are
in a position to cash in only if they
conscientiously aid their dealers with
technical suggestions.

"Education and industry are a
challenge to our ingenuity and sales

Perisphere at N. Y. World's Fair forms
the horn of the largest speaker ever
made. Built by RCA it employs 36 re-
producers with a response from 20 to
10,000 cycles

ability." In conclusion Mr. Potts
states, "No longer will our customers
come to us — we must carry our plan
of merchandising to their door."

"There is no doubt in anyone's
mind but that the sound business is
going to expand very greatly in the
next few years. The applications and
needs for sound equipment are in-
creasing daily, even to a point where
they are actually being retarded due
to the lack of proper distribution fa-
cilities," comments Hubert Shortt,
President of Transformer Corp. of
America, "All of the principles ad-
hered to in the merchandising of re-
placement parts, radio sets and similar
items cannot be applied to sound sell-
ing.

"Until proper cognizance is taken of
these facts, the haphazardous methods
employed by sound distributors will
continue to exist. The present 'radio'
outlets for sound equipment are not
properly set up to handle sound equip-
ment merchandising and unless they
amend their ways very shortly, the
major portion of sound equipment
selling will be handled by concerns
other than those considered to be in
the radio industry. Sound equipment
selling is no longer an 'on the shelf
proposition, even when it is carried
as a side line. A different sales ap-
proach is required for sound equip-
ment selling."

j&wftfcf Mead m PMts

Millions of extra sets to be sold for television, fac-
simile, frequency modulated broadcasts. Thousands
of U-H-F transmitters to provide program service.
Radio pianos and industrial controls need radio parts.

Never before has the outlook for
the radio parts industry been as
bright as now. Uses for radio parts
have gone far beyond the horizon
marked by receivers, for such parts
are now being used in television, fac-
simile, sound systems, electronic mu-
sical instruments, industrial control
systems, and other radio-tube devices.
Then too, there has been established
a fair degree of mechanical and elec-
trical standardization, resulting in a
better opportunity for economical
manufacture.

TELEVISION BOOM

Television receivers with their
some 25 to 30 tubes, are equivalent in
the number of parts to a couple of
10-tube broadcast receivers and a
cathode-ray oscilloscope. In televi-
sion sets there are really two com-
plete receivers — one for the video,
another for the audio. Then to make
the picture tube function there must
be sweep circuits, filters for separat-
ing synchronizing signals, and a high-
voltage power supply.

For volume-control manufacturers,
television should precipitate a boom,

since up to 13 variable controls are
used, as compared with a maximum
of two in a sound receiver. Likewise
tube manufacturers should rejoice, for
25 or more tubes are used. Similar
examples can be listed for every other
type of parts, but it suffices to say
that in a television receiver, each tube
requires as many if not more parts
than a tube in an ordinary all-wave
receiver. Fortunately, for the parts
jobbers and servicemen practically all
of the parts, except a few of those in-
volved in the cathode-ray circuits and
the tuned coils, are the same as those
used in every-day radio work.

While facsimile at present is be-
ing peep-swished on the broadcast
band, thus permitting the use of
standard receivers with a facsimile
attachment, in the future much fac-
simile will be sent out on the ultra-
high frequencies. The use of these
frequencies means that there will be
a great demand for ultra-high-fre-
quency receivers to operate the fac-
simile printers. Considerable num-
bers of radio parts are used in the
facsimile printers, even though they
are mainly mechanical in operation.
It is likely, however, that many of the

"Radio" piano developed by Miessner, using amplifiers and loudspeakers to provide
great depth of tone and volume.

radio parts manufacturers will sup-
ply the mechanical parts for the print-
ers, thus keeping the entire manufac-
ture in the radio trade.

ULTRA-HIGH FREQUENCIES

Ultra-high-frequency receirers are
going to be needed for the reception
of frequency modulation transmis-
sions as well as for facsimile. The
number of U-H-F sets that will be
sold in the next several years is prob-
ably in the tens of millions. And it
should be remembered that these sales
will be in addition to the regular
number of sets sold for use on the
standard broadcast band.

Pocket radios, predicted many
months ago by Radio Today have now
reached the experimental stage, and it
has been proven that they are practi-
cal. Extremely small tubes about
three-quarters of an inch in diameter
have been developed for dry cell op-
eration. Merchandising experts be-
lieve that several million of these sets
can be sold each year, so that Mr.
and Mrs. Public can have radio re-
ception everywhere they go. Since
these sets are primarily portables and
depend on batteries for operation,
they will not be used appreciably at
home. Instead the regular power-line
operated receiver will be employed.
Thus, it should be noted that the
pocket radio will be an extra radio —
it will not supplant any of the pres-
ent sets.

HEAVY DEMAND ON BATTERIES

Since the battery pocket sets must
be compact and light, very small bat-
teries will be used. Naturally there
will be a constant demand for new
batteries as the old ones wear out.
With millions of these pocket sets in
daily use, battery manufacturers will
have a market greatly in excess of
that which existed when the home-
type battery set was at its height.
Dealers and jobbers will have an item
that will bring every set owner to
their stores at regular and often in-
tervals.

To provide program service for fac-
simile, television, and frequency-
modulated sound transmissions is go-
ing to requh'e an immense expansion
program in the broadcasting industry-

RADIO TODAY

Actual size of bantam jr. tubes just
developed by Hytron for ultra-com-
pact receivers and devices.

Predictions have been made that
there may be a thousand television
stations in a few years compared to
the present 765 broadcasting stations
we now have. Then there must be
U-H-F stations for facsimile and fre-
quency modulation. A total of 10,000
more stations within five to ten years
is entirely possible. That means an
average annual sale of parts in excess
of the total number of parts now in
use in broadcasting.

TRANSMITTERS GALORE

Then to. provide remote tele pick-
ups, there must be available at each
television station at least several mo-
bile television transmitters. And
should radio links be used to form
television chains, a few more thou-
sand relay transmitters will be needed.

In addition to radio's entertain-
ment possibilities, there is the com-
mercial aspect. Today all commercial
airliners have 2-way radio communi-
cations. In a few more years when
the public takes to the air and there
are a few million private planes, it
will be necessary for all private planes
to have 2-way radios. With the air
thick with planes in the vicinity of
airports, radio will be essential in
order to properly direct traffic and
effect safe landings. Several million
2-way radios will give the parts peo-
ple something to keep busy — natu-
rally special light-weight designs will
be needed, but such problems are
easily solved.

Government figures show that there
are now almost 250,000 numbered
motorboats — boats that are used for
pleasure on U. S. waterways. Here
is an expanding market for radio that
hasn't been scratched. Two-way radio
installations will be used in a large
percentage of these boats because of
the safety angle. Others will have a
radio only for its entertainment value.
Every radio sold, means dozens of
parts for the initial building, and
later parts for replacement when the
set needs repairing.

Straying away from straight radio
applications, there are sound and

electronic musical instruments which
require hi-gain amplifiers having
more parts than our average present-
day radio set. The day is approach-
ing when it will be considered just as
essential that an audience hear with-
out ear-strain, as it is that we see
without eye-strain. Sound will be
considered as necessary in large rooms
and auditoriums as proper lighting.
Amplified and electronic musical
instruments, just now in infancy, are
raising a man-sized sound for recog-
nition in the musical world. Elec-
tronic organs have won acceptance in
the past several years. Now there are
pianos, stringed instruments, and
combination instruments giving piano,
organ string, and wind effects from
one keyboard. All these instruments
use amplifiers, and many of them have
electrical filters for giving various
overtone effects.

"RADIO" PIANOS

About 15 years ago, when pianos
were expensive, some 400,000 units
were sold, all of which are obsolete.
In 1938 about 100,000 pianos were
sold, and for 1939 expectations are
for a 25 per cent increase. Electronic
pianos should be able to corner this
entire market and develop more sales,
since it is anticipated that the "radio"
pianos can be sold for a fraction of
the cost of a standard one; yet the
tone of an electronic piano compares
with the finest grand piano. Close to
a million electronic pianos a year, a
few years from now is entirely pos-
sible. Then there are all the other
versions of electronic musical instru-
ments to be sold.

Industrially, there are numerous
devices requiring radio parts that are
being developed and tried out. The
most spectacular ones being photo-
cell control of operations. Many au-
thorities are predicting a rapid rise

New circuits and features provide parts
manufacturers with an ever-growing
market. Pictured is the Admiral Aero-
scope loop antenna.

in the use of electronic devices in in-
dustry as soon as the various engi-
neers get acquainted with the devices
and what they will do.

MEDICAL FIELD

In the medical field there are the
cardiograph and diathermy that have
won tremendous acclaim. While in
numbers the cardiographs are few,
each unit calls for an exceptional
number of radio parts. Diathermies,
on the other hand, are devices that
many claim can be sold to the public.
This being true, there is a tremendous
market on tap. Companies offering
diathermy machines for sale to the
public, report sales far beyond their
fondest hopes. Machines, inciden-
tally, sell for upwards of $150.

And if it were not for limited space,
it would be possible to continue ad
infinitum giving illustrations of how
the demand for radio parts will ex-
pand in the future. Certainly, the
future of the radio parts industry is
excellent.

The Hammond Novachord employs a host of radio parts to provide amplification
and reproduction of piano and other tones.

MARCH, 7939

UMu} % jo* Bine* PwfUs

How a prospect with $9.95 ideas can be sold a hundred-
dollar radio, how a dealer may reach the consumer who
can afford higher priced sets is told by sales experts.

To help radio dealers make greater
profits by increasing their dollar vol-
ume, leading radio merchandisers are
explaining their methods for the bene-
fit of Radio Today's readers. These
exceptionally successful dealers have
found out that the problem of selling
up is, after all, only a matter of actual
selling. Manufacturers, ever on the
alert, are helping solve the sales prob-
lems by supplying the right merchan-
dise and suitable promotion aids.

To the man used to quibbling about
a twelve-cent sales tax, sales of $2,500
seem out of the question, but to Mr.
Kolmetz of Liberty Music Shop, New
York City, they're all in the day's
work. Here are some of his ideas on
how to chase the ever elusive big sale.

GOOD REPUTATION IMPORTANT

Spend most of your advertising
money to promote lines that put cash
in your till and create a good reputa-
tion. When people spend big money,
they go to a store which has their
confidence.

Cater to your women buyers. They
buy when they want a radio, price is
secondary; but they must have ex-
cuses for spending large sums, both
for themselves and friend hubbie.
Provide them with plenty of reasons,
such as: the savings you give them,
the better reception on large consoles,
how their friends will admire the more
beautiful set.

Play a classical recording on the

best combination you have and point
out the better tone, the richer obli-
gates. If they don't appreciate it,
they won't admit it and are impressed.
If they do like good music, you've
made a sale. No one who really ap-
preciates fine music will buy an in-
ferior instrument.

Above all don't be afraid of the
sound of hundreds of dollars, let the
price come quietly as though it were
chicken feed. Always remember you're
selling quality and let them know that
the more they pay the more they get.
Too many salesmen make the mistake
of regarding the $300 set as a mu-
seum piece, too valuable to even men-
tion to the casual buyer, reserved for
a dream millionaire who'll drop in
and say "I want that one."

PERIOD MODELS FOR
PARTICULAR BUYERS

R.C.A., Philco, Stromberg-Carlson,
Capehart, Brunswick and Ansley are
promoting period furniture radios in
an attempt to climb out of the 1938
price cellar.

The idea, while new, is not untried
and it should be sold to every person
who takes pride in the furnishing of
his home. A travel agency doesn't
sell a prospect for a Bermuda cruise
an excursion on the Albany night
boat. Far-sighted radio dealers don't
sell a man who can afford to buy
other quality merchandise, a radio
set to hide behind the bookcase.

"People with well furnished homes
have been buying midget radios be-

LimtTED

EDITIOnS b,

Rare woods and limited production make these Spartons truly unique.

Hepplewhite by Brunswick features a
6-tube chassis with push-button tuning.

cause they're easily hidden, but they'd
buy a higher priced set if it harmon-
ized with the rest of the furniture,"
says H. L. Weisburgh of Mersman
Bros., makers of Brunswick radios.
After talking with thousands of deal-
ers and consumers — and being in the
selling game himself — he's well qual-
ified to sound off on how it's done.
He cites Emporium, of San Francisco,
Cal., as a typical example of what can
be accomplished by "being on the
button." _

Featuring clever cartoons and
snappy copy, Emporium advertises
period furniture radios as the sets
for the discriminating buyer. "If
your radio fights your furniture, you'll
appreciate the new Brunswick radios,"
they flash. Orders are coming in every
week and call it "selling up" you
must, because Emporium is continu-
ally tapping the high-mark-up market.
Will you hear further?

"Radio sets with cabinets as occa-
sional pieces in Duncan Phyfe, Chip-
pendale or other period styles are cer-
tainly a means of getting bigger profit
and greater sales. Our 1500 dealers
state definitely that people can be
(Continued on page 89)

R4DIO TODAY

People everywhere are excited about television; they want to know when, how and where they

can buy television sets. Picture shows the crowds which daily pour into the television exhibit

at the San Francisco World's Fair which opened in January.

jfcfc tout Uterisiok hdd I

In television we are launching a new in-
dustry.

Starting fresh, let us see that television
avoids the mistakes and pitfalls that have
cursed radio.

As radio men, we have had bitter experi-
ence in the past. We know where disaster
lies. Let's insist that television's course be
charted to avoid these troubles — from the
beginning.

With the new art soon to be put before
the buying public, let us plan its sales and
business structure soundly. Let us banish
forever any possibilities that this great ser-
vice may be marred by the business evils

that have beset the sale of radio.
* * *

Television is the newest, greatest, most
complex service devised by man. Already
we can see that it is more than a mere tech-
nical art, even though it combines the latest
knowledge of electrical engineering, chem-
istry, physics and electronics.

For television will — we now realize — like
its older brother, radio, involve undreamed
social, political and international complica-

O. H. CALDWELL

Editor Radio Today

Former Federal Radio

Commissioner

tions. As television grows, its impact will
be felt in the whole gamut' of human emo-
tions and relations.

* * *

It is important then, that the business
structure of the new art be set up right from
the very start. Models, prices and discounts
must all be planned carefully. A television
Code of Ethics is in order. Certainly, this
is a time to call together all those who will
have a hand in this new art, to combine
ideas, and to see that no careless "monkey-
wrench" is tossed into the shimmering
structure now being erected.

Perhaps patent control can effect the co-
ordination so much needed. Perhaps Wash-
ington— sensing a new industry which can
help roll back the recession — will help by
authorizing sessions looking toward sound
business planning.

But the time for action is now. Televi-
sion must be planned right, from the start.
Or evils and dismay may beset it through
all its future years.

0. H. CALDWELL,
Editor, Radio Today

On April 30th, with the opening of the N. Y. World's Fair, television broadcasting will start in the New
York area, and the Television Era will begin.

In April, appropriately, Radio Today will issue its Television Selling Number, featuring television sets,
attachments, prices, discounts, and what radio men need to know about television installation and servicing.

WATCH FOR RADIO TODAY'S "TELEVISION SELLING NUMBER", APRIL, 1939

Push-button superhet.

•k AC-DC, 5-tube superhet, port-
able house radio tuning 540 to 1,650
kc. Has six-station automatic tun-
ing, built-in antenna, 5 inch dy-
namic speaker. Bakelite cabinet in
walnut or ivory finish. Model 519.
Belmont Radio Corp., 1257 Fuller-
ton Ave., Chicago — Radio Today.

Dry electrolytic kits

Handy kits containing six or
twelve Sprague atom condensers,
take little space in service kit. Will
safely replace larger ones. Catalog
available. Sprague Products Co.,
North Adams, Mass.— Rapto Topay.

AC-DC chokes

* Replacement chokes for AC-
DC receivers. Designed with resist-
ances of 200, 250, 300, and 350 ohms.
Produce minimum voltage drop.
Catalog No. 400 available. Thor-
darson Elec. Mfg. Co., 500 W. Hu-
ron St., Chicago, 111. — Rapio Topay.

Companion set

4-tube portable super-het tuning
550 to 1,500 k.c. Built-in antenna,
fine selectivity and tone quality.
Self-contained, long-life batteries.
Stewart-Warner Corp., 1826 Diver-
sey Pky., Chicago. — Rapto Topay.

Substitute speaker and
vibrator tester

* Universal - type substitute
speaker with meter calibrated in
watts output. PM-type speaker
with output transformer for match-
ing loads from 2000 to 30,000 ohms.
Field resistance from 300 to 10,000
ohms. Vibrator tests under actual
operating conditions. Complete A
battery circuit for auto radio test-
ing. Model TS-50. Hickok Elec-
trical Instrument Corp., 10514 Du-
pont Ave., Cleveland, Ohio. — Rapto
Topay.

Hunt Hew Ukqs

Latest news of radio products from manufacturers

".,' '

Univex projector

500-watt 8-mm. projector with ef-
ficient cooling system. Projects up
to 5x7 ft. using high-speed lens of
F:1.6. Threaded focusing adjust-
ment. G-E pre-focused lamp socket,
heavy duty AC-DC universal motor
with variable speed control. $42.50
list. Universal Camera Corp., 32-46
W. 23rd St., New York, N. Y.—
Rapto Topay.

Tubular capacitor

Paper tubular capacitor, supple-
menting old type DT "Dwarf Tiger."
Impregnated in Dykanol "D," no
additional price. Approximately
fifty capacities available in 400, 600.
1,000, and 1,600-volt ratings. Catalog
No. 165A on request. Cornell Dubl-

lier Elec. Corp., S. Plainfield, N. J.
— Rapto Topay.

Television oscillator

* Ultra-high-frequency test os-
cillator designed for servicing tele-
vision receivers. Tunes 22 to 150
megacycles in one continuous band.
Overall accuracy better than 2 per
cent. Uses inductance type tuning.
Dial turns 16 revolutions. Battery
operated— weight 16 lbs. Rod-type
antenna and conventional output
through resistance attenuator. Pro-

»» *

vision for crystal operation and ex-
ternal modulation. Provides signal
when stations are not on the air.
Model 787. Weston Electrical In-
strument Corp., 614 Frelinghuysen
Ave., Newark, N. J. — Rapto Topay.

Rider electronic

volt-ohmmeter

* Multi-range DC voltmeter
having 16-megohm constant-
input resistance. Voltage ranges
of 0/5/10/25/100/250/500/1000/2500/
5000 at 2 per cent accuracy. Resist-
ance ranges of 0/1M/10M/100M/1
meg/10 meg/100 meg/lOOOmeg. Elec-
tronic circuit using push-pull ar-
rangement statically and dynami-
cally balanced. Zero adjustment
does not require resetting when
changing ranges. Permits voltage
measurements in all circuits under
dynamic operating conditions. Sta-
bilized self-contained power supply,
AC operated. Rider Volt-Ohmyst —
net $57.50. Service Instruments,
Inc., 404 Fourth Ave., New York,
N. Y— Rapto Topay.

RADIO TODAY

Transitone compact

* 5-tube AC-DC superhet cover-
ing broadcast band, state and mu-
nicipal police calls. Dynamic
speaker, AVC, built-in aerial. Ap-
proved by Underwriters' Labora-
tories. Solid walnut cabinet — mod-
el TP-12. Philco Radio & Tele
vision Corp., Tioga & C Sts., Phila-
delphia, Pa. — Radio Today.

All-purpose portable

* Five tube portable receiver
operates oh batteries or AC-DC line.
Weather-proofed, aero-luggage case
with carrying handle. Built-in loop
and connection for external antenna.
Tuning range 550 to 1,700 kc, air-
plane type dial, 5 inch speaker
Lafayette Model CC-55. Wholesale
Radio Service Co., 100 Sixth Ave..
New Vork, N. Y. — Radio Today

Lamp and radio combination

* Combined lamp and five
tube super-het designed in 8
types. Chassis concealed in base
Large dynamic speaker below re-
flector bowl. Self-contained an-
tenna. AC-DC operation. Tunes
1750-540 kc. 10 kc. selectivity.
Has AVC. Radio Lamp Co. of
America, 1313 W. Randolph St.,
Chicago, 111. — Radio Today.

Generating plants

Water-cooled AC generating plants
operating on gasoline, natural or
manufactured gas, 1,500-watt ca-
pacity, supplied in manual, self-
starting or full automatic types.

Metal housing, easy accessibility to
accessories, little sound or vibration
while running. Model "W15. D. W.
Onan & Sons, Minneapolis, Minn. —
Radio Today.

Lighted microphone stand

"Mike-Lite" has adjustable lights
with rose-tinted, frosted lens on
either side of microphone, no glare
or shadows. Chromium plated,
equipped with 25 ft. shielded cable
and AC cord, transformer. Assem-
bly folds flat, lists from $62.50 to
$77.00 depending on type of micro-
phone. Astatic Microphone Lab.,
Inc., Youngstown, Ohio— Radio To-
day.

Complete service kit

■k Service-Pak contains stock of
essential parts for radio servicing:
Including resistors, volume controls
& switches, audio, output & power
transformers and 5 inch electro-
dynamic speaker. Accommodations
for extra parts, over-all size 17 x 39
x 10 inches. Price to dealer $29.95
complete. Utah Radio Prod. Co..
820 Orleans St., Chicago, 111. — Radio
Today

Bantam Jr. sockets

* Molded sockets for bantam
Junior tubes available in black or
mica-filled bakelite, accommodate
5 & 6 prong tubes. Sockets are com-
pact, mount in plain % inch round
hole, held by retainer ring. Adapt-
ers and analyzer plugs available.
American Phenolic, 1250 Van Buren
St., Chicago, 111. — Radio Today.

Multi-range

push-button tester

* Automatic push-button AC-DC
tester incorporating 29 ranges. All
measurements, except 3,000 v. AC-
DC, obtained from two polarized
tip jacks. Simple to operate 3-inch
D'Arsonval meter. Housed in com-
pact wooden case. Series 870, $16.95
net. Precision Apparatus Co., 821
E. New York Ave., Brooklyn. N. Y.
—Radio Today.

RCA shows its handsome radio-phonograph console Victrola with crystal pick-
up, electric tuning, constant-speed motor, lovely lady — no telephone number.

MARCH, 1939

Auto Iodic Iktwd Scans

Increased motoring to N. Y. and San Francisco fairs
to hike demand for auto sets. 23 million car owners
are prospects for 1939. More new sets announced.

Some twenty million American mo-
torists who are already sold on the
value of radio, but do not yet have an
auto radio, are even now looking for-
ward to summer pleasures. To the
radio dealers, these twenty million
used-ear owners represent a prolific

Philco's 933 features one push button
for tuning five stations.

A>\^\i\^(*"

G-E's single-unit super-het has touch
tuning, variable antenna adjustment.

United Motors stresses adaptability
in this Delco push-button model.

source of sales for the next few
months. By stressing the features of
the new auto-radio sets in terms of
summer enjoyment and pointing out
the exceptional values obtainable for
a small cost, the dealer can do much
to increase his spring and summer
profits.

Dealers should contact the millions
of persons who will be motoring to
the World's Fair and the San Fran-
cisco Exposition. These motorists
will be traveling long distances and a
radio will serve to reduce the mo-
notony. And for those driving at
night, the radio will be an invaluable
aid in keeping the driver awake.

23 MILLION AUTO-RADIO
PROSPECTS IN 7939

To help sell the twenty million car
owners who do not own an auto radio
now, the radio manufacturers have an-
nounced sets suitable for every car
and every pocketbook. And for the
new-car trade, many of the radio com-
panies are producing custom sets that
match the instrument panel of the car.
While the new cars will probably num-
ber only three million, these prospects
generally have and are willing to buy
the more expensive radio sets. Instal-
lation in new cars shouldn't be over-
looked because of the comparatively
limited market — the unit sale, less in-
stallation, will probably average twice
that of the used-car market.

New. auto lines announced this
month are Delco, General Electric,
and Philco, which are illustrated and
described on this page. Previous an-
nouncements and specifications, in-
cluding Admiral, Arvin, Howard,
RCA-Victor, and Troy, appeared on

pages 10 and 11 of the February Ra-
dio Today.

Philco is featuring several models
for installation in any make car. Cus-
tom controls are available without
extra charge for those sets suitable
for instrument panel mounting. A
2 - unit push - button receiver, for
universal mounting is being pushed
for the lower-priced installation — it
lists for $39.95. A single push-button
selects five stations and has a position
for manual tuning.

UNIVERSAL MOUNTING SETS

General Electric is promoting a
single-unit receiver for mounting
under the instrument panel. Set has
touch tuning with five buttons as
shown in the illustration.

Automatic permeability tuning is
but one outstanding Delco feature for
1939. These sets do not use a vari-
able condenser for tuning, but con-
tinuously-variable, inductances with
movable iron cores. Both universal
mounting and custom-type sets are
available for all cars.

Other features of the 1939 sets are
improved antennas, simplified instal-
lation, improved appearance, and
lower prices, all of which make the
new auto radios easier to sell. Radio
dealers everywhere can easily find out
who their prospects are from the lists
of automobile registrations that are
available.

Locating leads from registration
lists, incidentally, is one of the best
methods of nailing actual customers
for auto radios. All effort and ex-
pense are then concentrated on peo-
ple who are most interested and most
able to purchase the product.

Admiral model 55 by Continental has
slide-rule dial and sub-dash mounting.

1939 Auto Radio Specifications— Cont'd

No. Watts Amps. Speaker

Model List of audio batt. ■

No. price tubes power drain Size Location trol controls tuning

Tone Type Push
con- tuning button

General Electric Co., 1285 Boston Avenue., Bridgeport, Conn. — "G-E"

GA-62 NS 6 NS

Transitone Automobile Radio Co.

In set

Tioga and C Streets, Philadelphia, Pa.-

936

$29.95

6-GL

In set

937

49.95

6-GL

In set

938K

69.95

7-GL

Cowl

933

39.95

6-L

Choice

No
Yes
Yes
Yes

United Motors Service, 3044 W. Grand Boulevard, Detroit, Mich. — "Delco'
R675 NS 5-MG 3J4 6.3 5 In set No

R676 NS 5-MG 4 &y2 6 In set Yes

R677 NS 6-MG 4J4 7 NS Choice Yes

R678 NS 6-MG 5 7 8 Cowl Yes

Direct
'Philco"

Remote
Remote
Remote
Direct

Direct
Remote
Direct
Direct

Yes

No
Yes
Yes
Yes

Yes
No
Yes
Yes

RADIO TODAY

OUTSTANDING

The Webster Electric Amplifier Assures
a Complete High Quality Mobile Sound System

When you buy a Mobile Sound System you
might just as well get outstanding appear-
ance as well as outstanding performance.
You very definitely get both in this fine
Webster Electric unit.

Note the illustration. Have you ever seen a
better looking unit? Follow the arrow and
see how simple it is to change for either
110- volt operation or 6- volt battery opera-
tion. It is convenient, too. Four speaker re-
ceptacles are provided with change-over
switch for matching impedance. The power
output is 20 watts at 5% harmonic distor-
tion. Gain: 130 D. B. for microphone; 91
for phono unit.

The complete system includes amplifier
with turntable and crystal pick-up; hand
type crystal microphone with shielded cord
and plug; two P.M. dynamic speakers with
cords and plugs; set of matched tubes and
power packs for operation off of 110- volts
A.C. and 6-volts D.C. and battery connect-
ing cord.

Write for complete specifications on com-
plete line of amplifiers and portable sys-
tems. It is a well-known fact that you can-
not secure anything better than Webster
Electric quality — at moderate prices.

WEBSTER ELECTRIC COMPANY

Racine, Wisconsin . . . U. S. A. . . . Established 1909

Export Dept., 100 Varick Street, New York City

Cable Address "ARLAB" New York

"Licensed by Electrical Research Products, Inc., under U. S. Patents of American
Telephone and Telegraph Company and Western Electric Company, Incorporated."

Webster

Electric

"Where Quality is a Responsibility and Fair Dealing an Obligation'

MARCH, 7939

TmuU Washes

Parts Show at Chicago,
June 14-77

Wednesday, June 14, and Thursday,
June 15, will be Jobber Days at the
1939 National Radio Parts Trade Show
at the Stevens Hotel, in Chicago. Fri-
day, June 16, and Saturday. June 17,
will be given over to the general trade,
with the servicemen carrying on their
principal activities on Friday, and the
amateurs on Saturday.

This is the first time in the history
of radio trade shows that specific days
have been set aside for various sec-
tions of the radio parts industry. Job-
bers will thus have an opportunity to
discuss problems with their manufac-
turers, and on general trade days, serv-
icemen and amateurs will find the
booths manned by technicians who are
familiar with the problems of the tech-
nical groups.

More than a hundred manufacturers
had contracted for over 130 booths in
the 1939 Show by the first of March.

Ken Hathaway of the Show Corpora-
tion reports that the number of exhibi-
tors, as well as the amount of space
contracted for, is running ahead of last
year's record by nearly a month.

When you visit
N. Y. World's Fair

Radio Today offers to its subscribers,
readers, and friends in the industry
the complete facilities of a service bu-
reau that will handle everything nec-
essary for comfort and enjoyment dur-
ing your visit in New York to see the
World's Fair as well as New York
City, the great metropolis.

•/. Earl Smith, Southern representative for Meissner, reviewing his '38

sales reports ichich show him winner of sales contest. W. F. March,

Meissner sales manager, and Mrs. Smith standing at left. Albert Reid

of Mr. Smith's office standing at right.

This bureau is located in the heart
of New York, one block from Times
Square, and offers tours with room
assured in either hotel, residence club,
or private home.

The hotels and residence clubs are
located in Manhattan, and the rooms
in private homes are located in Queens
County near the site of the World's
Fair. All rooms in private homes are
located within fifteen minutes' ride of
the Fair Grounds.

Also included are NBC broadcasting
or television studio tours at Radio
City, with grand sightseeing tour of

Dallas dinner party — left to right: E. Wilkinson, of Wilkinson Bros.;
Mrs. Ray Carson; M. B. Patterson, Sylvania rep; P. S. Ellison, Syl-
vania Sales & Ad. Mgr.; Mrs. E. Wilkinson; Ray Carson, Sylvania rep;
Mrs. M. B. Patterson ; celebrating visit of Mr. Ellison on his country-
circling trip. He returns this week to New York after traveling through
twenty-seven states visiting Sylvania distributors.

New York and admission to the Fair.
Radio Today suggests that radio
men avail themselves of the services
of the Central Sightseeing Bureau,
Inc., 55 West 42nd Street, New York,
telephone LOngacre 5-3940. No charge
is made by this bureau for services
rendered.

Facsimile network
formed by MBS

That Facsimile transmission and re-
ception is no longer "around the cor-
ner" has been conclusively demon-
strated by the formation of a Fac-
simile network which began operations
on March 11. The three Mutual sta-
tions WGN, WOR, and WLW making
the chain have been transmitting fac-
simile locally for more than a year
and will alternate 30 minute period
presentations from 2 to 3:30 a.m.
EST.

J. R. Poppele, chief engineer of WOR
states that while many problems have
yet to be solved, broadcasters and man-
ufacturers of facsimile receivers are
in a much more encouraging position
than were the pioneers of radio. Of
interest to servicemen and dealers is
his comment that about $15.00 per
year will be spent by the owner of a
facsimile receiver for paper, parts and
service.

Further indication that facsimile is
hot, is the news that Finch Telecom-
munications Labs, have engaged Harry
Bressler, famous artist to handle spe-
cial cartoons for facsimile programs.

Ralph H. hinder has been appointed
Sales Promotion and Advertising Man-
ager of the American Record Corp.,
New York City.

RADIO TODAY

The Big

fsm-m

.OM coast to coast the best Parts Jobbers now

'have complete stocks of Meissner Vibrators
— the finest that money can buy.

No expense has been spared to make the
Meissner name mean "tops" on vibrators just as
it always has on coils.

The Meissner line is complete, a model for
every replacement — all extensively field tested.

Each Meissner Vibrator is manufactured, tested
and age d on the shelf at the factory. Then it is
tested again to be sure the metallurgical changes
have not impaired its efficiency or uniformity.
We believe this expensive safeguard is not done
by any other vibrator manufacturer. It is your
GUARANTEE of top quality. And, of course,
Meissner Vibrators cost no more than less re-
liable <

_ _k

FREE copy of the Vibrator Replacement Guide. With its
aid you can tell in a minute exactly which vibrator to
use in what set for top efficiency. jf <§§§§

MEISSNER MFG. CoN^^^

IMt. Carmel, Illinois, Dept. T-3
pppp copy of the Vibrator Replacement Guide
nCC is to be mailed to the address given below.

MT. CARMEIJUINOIS J "-

»PLETE RECEIVER KITS * 1. F TRANSFaRfttERS J Address
SERVICE PARTS * DIMS • SWITCHES • TUNING UNITS J cit" ****- |

"A FAMOUS NAME FOR TWO DECAPEs""""

MARCH. 7939 29

U.S. Bwdtestittf Station*

Revised to March 7, 1939, from official records of the Federal
Communications Commission and compiled by Radio Today

Call

Location

KABC San Antonio. .Tex 1420 H
KABR Aberdeen ...S.D. 1390 H

KADA Ada Okla 1200 H

KALB Alexandria ...La 1210 H

KALE Portland Ore 1300 0

KAND Corsicana ...Tex 1310 H

KANS Wichita Kan 1210 H

KARK Little Bock ..Ark 890 M

KARM Fresno Cal 1310 H

KASA Hk City Okl 1210 H

KAST Astoria, Ore 1376 H

KATE Albert Lea... Minn 1428 H

KAWM Gallup N.M. 1500 H

KBIX Muskogee Okl 1500 H

KBND Bend Ore. 1310 H

KBPS Portland Ore 1420 H

KB ST Big Spring ..Tex 1500 H
KBTM Jonesboro ...Ark 1200 H
KCKN Kansas City .Kan 1310 H
KCMC Texarkana ...Tex 1420 H
KCMO Kansas City ..Mo 1370 H

KCRC Enid Okla 1360 K

KCRj Jerome Art 1310 H

KDAL Duluth Minn 1500 H

KDB Santa Barb ..Cal 1500 H

KDFN Casper Wyo 1446 M

KDKA Pittsburgh ....Pa 980 W
KDLR Devils Lake N.D. 1210 H

KDNT Denton Tex. 1420 H

KDON Monterey Cal 1210 H

KDYL Salt Lake City.U. 1290 0
KEOA Los Angeles ..Cal I430O

KEEN Seattle Wash 1370 H

KEHE Los Angeles ..Cal 780 0
KELA Centralla ..Wash 1440 M

KELD Eldorado Ark 1370 H

KEL0 Sioux Falls .S.D. 1200 H
KERN Bakerafield ...Cal 1370 H

KEUB Price Utah 1420 H

ICSX Portland Ore 1 180 g

KFAB Lincoln Nebr 770 T

KEAP. Loi Angeles ..Cal 1300 O
KFAM St Cloud... Minn. 1420 H
KFBB Grew Falls .M»nt 1280 O

SEEL Abilene Kan 1050 •

KFBK Sacramento ...Cal 1490 T
KFDM Beaumont -. ....Tex 566 M
KFDY Brookings ...S.D. 7800

5££k DeI>Ter Col 929 M

5EIS st- Joseph Mo 680 R

KFGO Boone Iowa 1376 H

KFH Wichita Kan 1308 0

KF Los Angeles ...Cal64»W

KF 0 Spokane ...Wash 1120 H
KFIZ Fond du Lae.Wls 1420 H
KFjB Marshalltown .la 1200 H
KFJI Klamath Falls, Ore 1210 H
KFJM Grand Forks .N.D. 1410 M
KFJZ Fort Worth ..Tex 1370 H

Slstl Greeley Col 880 M

5*£» Lawrence Kan 1220 O

KFNF Shenandoah la 898 M

KF0R Lincoln . ...Nebr 1210 H
KFOX Long Beach . .Cal 1256 O

VrcEh, g"01111 Tex 1310 H

SZZX Fo" Sml«> ..Ark 1216 H

gFPY Spekane Wash 890 O

KS5 Anchorage .Alaska 780 K
5E5X t840 Francisco .Cal 610 0

KFRO Longview Tex 1370 K

KSn °°>umbla Mo 630 M

5EI2 £aB D1<*» Cal 600 O

5cnn iS* Aageles ..Cal 1120 M

IfFvn ?ayt?° i Me 550 M

i^y.S L*s Angeles ..Cal 1000 O
lyl Cape airardeau.JIo 1210 H
JSfj»? Hollywood ... .Cal 950 O

KFXD Nampa Idaho 1200 H

5rCi. Grand June ..Col 1200 H
5EJJJ San Bernardino Cal 1210 H

wcZo Lubbock Tex 1310 H

5«IR B1«n>arck N.D. 550 O

S5 * Spekane Wash 1470 8

5S2 Iac"^.. AT1I370H

■rami §?2 3*g0 •c«1 ,330 »
kcSv Ketchikan .Alaska 900 M
Vc?a Springfield ...Mo 1230 M
•>>/?■• P«orab . ...Iowa 1270 H

KGCX Wolf Point .Mont 1450 O

kbRm £er£" FM Mlnn ,200 H

SsSly Stockt(m CalllOOO

5U5 Sterling Col 1200 H

KHER Long Beach ..Cal 1360 O
KJE2 KallspeU . ..Meat 1310 H

DSrf ^wnee Okl 1420 H

KGF Brownsville ..Tex 1500 H
2%Z1 Lo» Angelee ..Cal 1200 H
sSEh. Rl,swell ....N.M. 1370 H

Stf.* Kearney Neb 1310 H

JSSJTX Pierre 8. D. 830 J

KOGF Coffeyrllle ...Kan 1010 O
KGGM Albuquerque N.M. 1230 O

Location

fcS

KGHF Pueble Col 1320 M

KGHI Little Bock ..Ark 1200 H

KGHL Billings Ment 780 0

KGIR Butte Ment 1340 0

K6IW Alamosa, Cole 1420 H

KGKB Tyler Tex 1500 H

KGKL San Angelo ..Tex 1370 H
KGKO Wichita Falls. .Tex 570 O
KGKY Scotts Bluff ..Neb 1500 H
KGLO Mason City ...la 1210 H

KGLU Safford Ariz 1426 H

KG MB Honolulu .Hawaii 1320 O

KGNC Amarillo Tex 1410 O

KGNF N. Platte Neb 1430 O

KGNO Dodge City ..Kan 1340 K
KGO San Francisco .Cal 790 S
KGU Honolulu . .Hawaii 750 R
KGVO Missoula ...Mont 1260 O

KGW Portland Ore 620 O

KGY Olympla ...Wash 1210 H

KHBC Hilo Hawaii 1400 K

KHBG Okmulgee .. .Okla 1210 H
KHJ Los Angeles . . .Cal 900 O

KHQ Spokane Wash 590 O

KHSL Chico Cal 1260 K

KHUB Watsonville ..Cal 1310 K

KICA Clovis N.M 1370 H

KID Idaho Falls Idaho 1320 M

KIDO Boise Idaho 1350 O

K1DW Lamar Col 1420 H

KIEM Eureka Cal 1450 M

KIEV Glendale Cal 850 K

KINY Juneau Alaska 1430 K

KIRO Seattle Wash 650 K

KIT Yakima Wash 1250 M

KITE Kansas City. .. Mo 1530 O
KIUL Garden City .Kan 1210 H

KIUN Pecoa Tex 1370 H

KIJP Durango Col 1370 H

KJBS San Francisco ..C 1070 M

KJ R Seattle Wash 970 S

KLAH Carlsbad ...N.M. 1210 H
KLBM La Grande ..Ore 1420 H
KLCN Blytheville ...Ark 1290 H

KLO Ogden Utah 1400 M

KLPM Minot N.D. 1360 M

KLRA Little Bock . .Ark 1390 O

KLS Oakland Cal 1280 K

KLUF Galveston ...Tex 1370 H

KLX Oakland Cal 880 O

KLZ Denver Col 560 O

KMA Shenandoah la 930 O

KMAC San Antonio .Tex 1370 H
KMBC Kansas City ...Mo950O

KMED Medford Ore 1410 K

KMJ Fresno Cal 580 O

KMLB Monroe La 1200 H

K.MMJ Clay Center ...Neb 740 O

KMO Tacoma Wash 1330 O

KMOX St. Louis ....Mo 1090 W
KMPC Beverly Hills ..Cal 710 M
KMTR Los Angeles ...Cal 570 O

KNEL Brady Tex 1500 K

KNET Palestine Tex 1420 H

KNOW Austin Tex 1500 H

KNX Los Angeles .Cal 1050 W

KOA Denver Col 830 W

KOAC Corvallls Ore 550 O

K O A M Pittsburg Kan 790 0

KOB Albuquerque N.M. 1 180 T
KOBH Rapid City .S.D. 1370 H

KOCA Kilgore Tex 1210 H

KOCY Okla. City. . .Okla 1310 H

KOH Rene Nev 1380 M

KOIL Omaha Neb 1260 O

KOIN Portland Ore 940 O

KOKO La Junta Col 1370 H

KOL Seattle Wash 1270 O

KOMA Okla. City ...Okl 1480 S

KOME Tulsa Okla 1310 K

KOMO Seattle Wash 920 O

KONO San Antonio ..Tex 1370 H
KOOS Marshfleld ...Ore 1200 H

KORE Eugene Ore 1420 H

KOTN Pine Bluff ...Ark 1500 H
KOVC Valley City .N.D. 1500 H

KOY Phoenix Ariz 1390 O

KPAB Laredo Tex 1500 H

KPAC Port Arthur .Tex 1260 M

KPDN Parana Tex 1310 H

KPFA Helena Mont 1210 H

KPLC Lake Charles ..La 1500 H

KPLT Paris Tex 1500 K

KPMC Bakersfleld ...Cal 15500
KPO San Francisco .Cal 680 W

KPOF Denver Col 880 0

KPPC Pasadena Cal 1210 H

KPQ Wenatchee . .Wash 1500 H

KPRC Houston Tex 920 0

KQV Pittsburgh Pa 1380 M

KQW San Jose Cal 1010 O

KRBA Lufkin Tex 1310 H

KRBC Abilene Tex 1420 H

Location

KRE Berkeley Cal 1370 H

KRGV Weslaco Tex 1260 O

KRIC Beaumont Tex 1420 H

KRIS Corpus Christi.Tex. 1330 M
KRKD Los Angeles ..Cal 1120 M

KRKO Bverett Wash 1370 F

KRLC Lewiston . . .Idaho 1390 K

KRLD Dallas Tex 1040 T

KRLH Midland Tex 1420 H

KRMC Jamestown ..N.D. 1370 H

KRMD Shreveport La 1310 H

KRNR Boseburg Ore 1500 H

KRNT Des Moines ...la 1320 O
KROC Bechester ...Minn 1310 H

KROW Oakland Cal 930 O

KROY Sacramento ...Cal 1210 H
KROA. Santa Fe ...N.M. 1310 H

KRRV Sherman Tex 1310 K

K RSC Seattle Wash 1 1 20 K

KSAC Manhattan Kan 580 M

KSAL Salina Kan 1500 H

KSAM Huntsville Tex 1500 H

KSAN San Francisco Cal 1420 H

KSCJ Sioux City la 1330 O

KSD St. Louis Mo 550 0

KSEI Pocatello Ida 900 K

KSFO San Francisco .Cal 560 O
KSL Salt Lake City. U 1 130 W

KSLM Salem Ore 1370 H

KSO Des Moines la 1430 0

KSOO Sioux Falls... S.D. II 10 S

KSRO Santa Rosa Cal 1310 H

KSTP St. Paul Minn 1460 T

KSUB Cedar City .Utah 1310 H

KSUN Lewell Ariz 1200 H

KTAR Phoenix Ariz 626 O

KTAT Ft. Worth ...Tex 1246 0

KTBC Austin Tex 1120 0

KTBS Shreveport La 1456 0

KTEM Temple Tex 1370 K

KTFI Twin Falls ..Ida 1240 0
KTHS Hot Springs ..Ark 1040 T

KTKC Visalia Cal 1190 K

KTMS Santa Barbara Cal 1220 M
KTOK Oklahoma City Okl 1370 H

KTRB Modesto Cal 740 K

KTRH Houston Tex 1290 O

KTRI Sioux City la 1420 H

KTSA San Antonio ...Tex 550 0
KTSM El Paso .... .Tex 1310 H

KTUL Tulsa Okla 1400 O

KTW Seattle Wash 1226 O

KUJ Walla Walla Wash 1370 H

KUMA Yuma Ariz 1420 H

KUOA Siloam Springs Ark 1260 S
KUSD Vermillion ...S.D. 890 M
KUTA Salt Lake City.. U 1500 H

KVCV Redding Cal 1200 H

KVEC San Luis Obispo.Cal 1200 H
KVGB Great Bend Kan 1370 H

KVI Tacom8 Wash 570 O

KVNU Logan U 1200 H

KVOA Tucson Ariz 1260 0

K VO D Denver Col 920 M

KVOE Santa Ana ...Cal 1500 H

KVOL Lafayette La 1310 H

KVOO Tulsa Okla 1 140 V

KVOR Colo. Springs .Col 1270 0
KVOS Belllngham .Wash 1200 H
KVOX Moorhead .Minn 1310 H
KVRS Rock Springs. Wyo 1370 H

KVSO Ardmore Okla 1210 H

KWBG Hutchinson .Kans 1420 H

KWEW Habbs N.M. 1500 H

KWG Stockton Cal 1200 H

KW1B Globe Ariz 1210 H

KWJJ Portland Ore 1060 M

KWK St. Louis ....Mo 1350 O

KWKH Shreveport La 850 T

KWLC Decorah la 1270 H

KWLK Longview Wash 780 K

KWNO Winona Minn 1200 K

KWOC Poplar Bluff... Me 1310 H
KWOS Jefferson City Mo 1310 H
KWSC Pullman ... .Wash 1220 O
KWTN Watertown ..S.D. 1210 H

KWTO Springfield Mo 560 S

KWYO Sheridan ....Wyo 1370 H

KXA Seattle Wash 760 K

KXL Portland Ore 1420 H

KXO El Centre ....Cal 1500 H

KXOK St. Louis Mo 1250 O

KXRO Aberdeen ...Wash 1310 H

KXYZ Houston Tex 1440 O

KYA San Frsnclsco .Cal 1230 0

KYOS Merced Cal 1040 K

KYSM Mankato Minn 1500 H

KYVV Philadelphia ..Pa 1020 T

WAAB Boston Mass 1410 M

WAAF Chicago 111920 0

WAAT Jersey City ...N.J. 940 M

WAAW Omaha Neb 660 M

WABC New York ...NY. 860 W

Location

. 3. &H

POWER 56 75 100 150 200 258 300 500 750 1000 1500 2000 2500 5000 10000 15000 25000 30000
CODE FGHIJKLMNO P 0 R ST UVW

WABI Bangor Me 1200 H

WABY Albany N.Y. 1370 H

WACO Waco Tex 1420 H

WADC Tallmadge ..Ohio 1320 0

WAGA Atlanta Ga 1450 M

WAGF Dothan Ala 1370 K

WAGM Presoue Isle .Me 1420 H

WAIM Anderson S.C. 1200 H

WAIR Winston- Salem N.C 1250 K

WALA Mobile Ala 1380 M

WALR Zanesville ..Ohio 1210 H

W A ML Laurel Miss 1310 H

WAPI Birmingham ..Ala 1140 S
WAPO Chattanooga Tenn 1420 H
WARD Brooklyn ...N.Y. 1400 M
WASH Grd Rapids Mich 1270 M

WATL Atlanta Ga 1370 H

WATR Waterbury ..Conn 1190 H

WAVE Louisville Ky 940 0

WAWZ Zarephath ...N.J. 1350 M

WAYX Waycross Ga 1200 H

WAZL Hazleton Pa 1420 H

WBAA West Lafayette Ind 890 M
WBAL Baltimore ....Md{ '°|° J

wBA? Fort Worth ...Tex 800 W
WBAX Wllkes-Barre .Pi 1210 H
WBBC Brooklyn . . .N.Y. 1400 M

,WIBH Bichmond Va 1210 H

WBBM Chicago TU 770 W

WBBR Brooklyn ....N.Y. 1300 O
WBBZ Ponca City ..Okla 1200 H
WBCM Bay City ..Mich 1410 M

WBEN Buffalo N.Y. 900 0

WBEO Marquette ..Mich 1310 H
WBHP Huntsville ...Ala 1200 H
WBIG Greensboro ..N.C. I440O
WBIL New York ...N.Y. 1 100 S
WBLK Clarksburg W.Va 1370 H

WBLY Lima Ohio 1210 H

WBNO New Orleans . .La 1420 H
WBNS Columbus ...Ohio 1430 0
WBNX New York ..N.Y. 1350 0

WB NY Buffalo N.Y. 1370 H

WBOW Terre Haute .Ind 1310 H
WBRB Bed Bank ...N.J. 1210 H
WBRC Birmingham . .Ala 930 0
WBRE Wllkes-Barre .Pa 1310 H
WBRK PUtsfleld ..Mass 1316 H
WBRY Waterbury .Conn 1530 O
WBT Charlotte ...N.C. 1080 W

WBTM Danville Ya 1370 H

WBZ Boston Mass 999 W

WBZA Springfield . .Mass 990 0

WCAD Canten N.Y. 1220 M

WCAE Pittsburgh Pa 1220 0

WCAL Northfield . ..Minn 760 S

WCAM Camden N.J. 1286 M

WCAO Baltimore Md 666 M

££AP. Anbury Park. N.J. 1286 M
WCAT Rapid City ..S.D. 1266 H
WCAU Philadelphia ..Pa 1176 W
WCAX Burlington ....Yt 1268 H

WCAZ Carthage Ill 1676 H

WCBA Allentown .. .Pa 1446 M

WCBD Chicago Ill 1080 S

V/CBM Baltimore Md 1376 H

WCBS Springfield HI 1426 H

WCCO Minneapolis .Minn 816 W

WCFL Chicago Ill 970 S

WCHS Charleston ..W.V. 580 M
WCHV Charlottesville. Va 1428 H

WCKY Covington Ky 1490 T

WCLE Cleveland ... Ohio 610 M

WCLO Janesville Wis 1200 H

WCLS Jellet Ill 1310 H

WCMI Ashland Ky 1310 H

WCNW Brooklyn ...N.Y. 1500 H

WCOA Pensacola Fla 1340 M

WCOC Meridian Miss 880 0

WCOL Columbus ...Ohio 1210 H

WCOP Boston Mass 1120 M

WCOU Lewiston Me 1210 H

WCPO Cincinnati ..Ohio 1200 H

WCRW Chicago Ill 1210 H

WCSC Charleston ...S.C. 1360 M

W CS H Portland Me 940 O

WDAE Tampa Fla 1220 O

WDAF Kansas City ...Me 618 0

WDAH El Paso Tex 1310 H

WDAN Danville .. . .Ill 1500 K
WDAS Philadelphia ..Pa 1370 H

WD AY Fargo N.D. 940 0

WDBJ Roanoke Va 936 0

WDBO Orlando Fla 586 O

WD EL Wilmington ..Del 1120 K

WD EV Waterbury Yt 556 M

WDGY Minneapolis .Minn 1180 0

WDNC Durham N.C. 1500 H

WDOD Chattanooga .Tenn 1280 0

WDRC Hartford Conn 1330 0

WDSU New Orleans ..La 1250 O
WDWS Champaign ...111 1370 H

WDZ Tuscola Ill 1020 K

WEAF New York ...N.Y. 660 W
WEAN Providence ...B.I. 780 0
WEAU Eau Claire . .Wis 1050 O
WEBC Duluth Minn 1290 O

Location

s u.

WEBQ Harrisburg ....HI 1210 H

WEBR Buffalo N.Y. 1310 H

WEDC Chicago Ill 1210 H

WEED Rocky Mt. ..N.C. 1420 H

WEEI Boston Mass 590 0

WEEU Reading Pa 830 0

WELI New Haven ..Conn 900 M
WELL Battle Ck ..Mich 1420 H
WEMP Milwaukee ...Wis 1318 H

WENR Chicago Ill 870 W

WEOA Evansville ...Ind 1370 H

WESG Elmlra N.Y. 1040 0

WEST Easton Pa 1200 H

WEVD New York ...N.Y 1300 O

WEW St. Louis Me 760 0

WEXL Royal Oak ..Mich 1310 F

WFAA Dallas Tex 800 W

WFAM South Bend ..Ind 1200 H
WFAS White Plains N.Y 1210 H
WFBC Greeavllle ...S.C. 1300 0

WFBfl Altoona Pa 1310 H

WFBL Syracuse N.Y. 1366 0

WFBM Indianapolis ..Ind 1230 0
WFBR Baltimore ....Mdl270M

WFDF Flint Mich 1310 H

WFEA Manchester .N.H. 1340 M
WFIL Philadelphia . . .Pa 560 0

WFLA Tampa Fla 620 0

WFMD Frederick Md 900 M

WFOR Hattiesburg Miss 1370 H
WFOY St. Augustine Fla. 1210 H

WFTC Kinston N.C. 1260 H

WG A L Lancaster Pa 1500 H

WGAN Portland Me 640 M

WGAR Cleveland ..Ohio 1450 O

WGAU Athena Ga 1310 H

WGBB Freeport ....N.Y. 1210 H

WGBF Evansville Ind 630 M

WGBI Scranton Pa 880 V.

WGCM Miss. City .Miss 1218 H

WGES Chlcage I1L 1366 M

WGH Newport Newa Ya 1316 H

WGIL Galesburg Ill 1500 K

WGL Ft. Wayne ...lad 1370 H

WGN Chicago Ill 720 W

WGNY Newburgh ..N.Y. 1210 H

WGPO Albany Ga 1420 H

WGR Buffalo N.Y. 550 0

WGRC New Albany .Ind 1370 K

WGRM Grenada Miss 1210 H

WGST Atlanta Ga 890 0

WGTM Wilson .. ..N.C. 1310 H
WGY Schenectady . .N.Y. 790 W

WHA Madison Wis 949 S

WHAI Greenfield ...Mass 1210 K
WHAM Bechester ..N.Y. 1150 W

W HAS Louisville Ky 826 W

WHAT Philadelphia ..Pa 1310 H

WHAZ Trey N.Y. 1380 0

WHB Kansas City ...Mo 860 0

WHBB Selma Ala 1500 H

WHBC Cantos Ohio 1200 H

WHBF Beak Island ..111 1210 H

WHBI Newark N.J. 1250 0

WHBL Sheboygan ...Wis 1300 K
WHBQ Memphis ...Tens 1370 H

WHBU Anderson Ind 1210 H

WHBY Green Bay ...Wis 1286 H

WHDF Calumet Mloh 1378 H

WHDH Boeton Mass 830 0

WHDL Olean N.Y. 1400 K

WHEB Portsmouth .N.H. 740 K
WHEC Rochester ...N.Y. 1430 M

W HFC Cicero HI 1420 H

WHIO Dayton 0 1266 0

WHIP Hammond Ind I486 S

WHIS Bluefleld ...W.V. 1410 M
WHJB Greensburg ....Pa 620 K
WHK Clerelaad ....Ohio 1390 0
WHKC Columbus ...Ohio640M
WHLB Virginia ...Minn 1370 H
WHLS Port Huron .Mich 1370 K

WHMA Anniston Ala 1420 H

WHN New York ..N.Y. 1016 0
WHO Des Moines ...la 1000 W
WHOM Jersey City .N.J. 1450 K

WHP Harrisburg Pa 1430 M

WIBA Madison Wis 1280 0

WIBC Indianapolis ..Ind 1050 0

WIBG Glenslde Pa 970 H

WIBM Jackson Mich 1370 H

WIBU Poynette Wis 1210 H

WIBW Topeka Kan 580 0

WIBX Utlca N.Y. 1200 H

WICA Ashtabula Ohio 940 K

WICC Bridgeport ..Conn. 600 M
WIL St. Louli ....Mo 1200 H

WILL Urbana Ill 580 S

WILM Wilmington ..Del 1420 H

WIND Gary Ind 560 0

WINS New York ...N.Y. 1180 0

WIOD Miami Fla 610 0

WIP Philadelphia ...Pa. 616 0
WIRE Indianapolis ..Ind 1400 0

WIS Columbia S.C. 560 0

WISN Milwaukee ...Wis 1120 K
WJAC Johnstown ....Pa 1310 H

RADIO TODAY

Call

Location

£.2 fe

£a 1 £

WJAG

..Neb 1060 0

WJAR

Providence

..R.i. 890 O

WJAS

Pittsburgh .

...Pa 1290 O

WJAX

Jacksonville

...Fla 900 O

WjBC

Bloomlngton

..111 1200 H

WJBK

Detroit

.Mich 1500 H

WJBL

...IU 1200 H

WJBO

Baton Rouge

..La 1120 M

WJBW

New Orleans

..La 1200 H

WJBY

..Ala 1210 H

WJOX

..Miss 1270 O

WJEJ

Hageratown .

..Md 1210 H

WJHL

Johnson City. Tenn 1200 H

WJIM

Lansing ...

.Mich 1210 H

WJJD

...III 1130 U

WJMS

Irenwood . .

Mich 1420 H

WJNO

WPalm Beach

Fla. 1200 H

WjR

Detroit

.Mich 750 W

WJRO

Tuscaloosa .

..Ala 1200 K

WJSV

Washington .

.D.C. 1460 T

WJTN

Jamestown .

N.Y. 1210 H

WJW

.Ohio 1210 H

WJ2

New York: .

.N.Y. 760 W

WKAO

San Juan . .

.P.R. 1240 0

WKAR

E. Lansing

.Mich 850 0

WKAT

Miami Beach Fla I.5WI J

WKBB

E. Dubuque

...111 1500 H

WKBH

WKBN

Toungstown

.Ohio 570 M

WKBO

Harrlsburg

..Fa 1200 H

WKBV

Richmond . .

..Ind 1500 H

WKBW Buffalo

.N.Y. 1480 S

WKBZ

Muskegon . .

Mich 1500 H

WKEU

..Qa 1500 H

WKOK

..Pa 1210 H

WKRC

Cincinnati .

..Ohio 550 O

WKST

New Castle

..Pa 1250 K

WKY

Okto. Cltj .

...Okl 900 O

WKZO

Kalamazoo .

..Mich 590 O

WLAO

Nashville . . .

.Tenn 1470 S

WLAK

Lakeland . .

..Fla 1310 H

WLAP

Lexington . .

..Ky 1420 H

W LAW Lawrence Mass 680 0

WLB Minneapolis ...Min760S

WLBC Muncie Ind 1310 H

WLBL Stevens Pt Wis 900 S

WLBZ Bangor Me 620 M

WLEO Erie Pa 1420 H

WLLH Lowell Mass 1370 H

WLNH Laconia . ...N.H. 1310 H

WLS Chicago Ill 870 W

WLTH Brooklyn .. .N.Y. 1400 M
WLVA Lynchburg ....Val2fl0H
WLW Cincinnati ... Ohio 700 W
WMAL Washington ..D.C. 630 K

WIYIAft Chicago Ill 670 W

WMAS Springfield .Mass 1420 H

WMAZ Macon Ga 1 180 0

WMBC Detroit Mich 1420 H

WMBD Peoria Ill 1440 0

WMBG Richmond Va 1350 M

WMBH Joplin Mo 1420 H

WMBI Chicago Ill 1080 S

WM BO Auburn N.Y. 1310 H

WMBR Jacksonville ..Fla 1370 H

WMBS TJniontown Pa 1420 H

WMO Memphis Tenn 780 0

WMCA New York ...N.Y. 570 0

WMEX Boston Mass 1500 H

WMFD Wilmington .N.C. IJ70 8
WMFF Plattsborg ..N.Y. 1310 H

WMF6 Hlbbing Minn 1210 H

WMF J Daytona Bch .Fla 1420 H

WMFO Decatur Ala 1370 H

WMFR High Point .N.C. 1200 H
WMIN St. Paul ...Minn 1370 H
W M M N Fairmont ...W.Va890O

WM PC Lapeer Mich 1200 H

WMPS Memphis ...Tenn 1430 M

WMSD Sheffield Ala 1420 H

WMT Cedar Rapids ..la 600 0
WNAC Boston ......Mass 1230 0

WNAD Norman Okl 1010 0

WNAX

WNBC

WNBF

WNBH

WNBX

WNBZ

WNEL

WNEW

WNLC

WNOX

WNYC

WOAI

WOO

WOI

WOKO

WOL

WOLS

WOMI

WOMT

WOOD

WOPI

WOR

WORC

WORK

WORL

WOSU

WOV

WOW

WOWO

WPAD

WPAR

WPAX

WPAY

WPEN

WPG

WPIC

WPRA

WPRO

WPRP

WPTF

WQAM

Yankton
New Britain
Binghamton
New Bedford
Springfield .
Saranac Lake
San Juan . .
New York..
New London
Knoxville .
New York .
San Antonio
Davenport .

Ames

Albany . . .
Washington
Florence
Owensboro
Manitowoc
Gd Rpds .
Bristol . . .
Newark . . .
Worcester

York

Boston . . .
Columbus .
New York .

Omaha

Ft. Wayne

Paducaa . .

Parkersburg

ThsmasvlUe

Portsmouth

Philadelphia

Atlantic City

Sharon

Mayaquez . .
Providence

Ponce

Raleigh

Miami . . . .

..S.D. 570 0
Conn 1380 K
.N.Y. 1500 H
Mass 1310 H
...Vt 1260 0
N.Y. 1290 H
.PR. 1290 0
.N.Y. 1250 O
Conn 1500 H
.Tenn 1010 0
..N.Y. 810 0
.Tex 1190 W

la 1370 H

la 640 S

.N.Y. 1430 M
.D.C. 1230 0

. .S.C. 1200 H

. ..Ky 1500 H
..Wis 1210 H

.Mich 1270 M
.Tenn 1500 H
..N.J. 710 W

.Mass 1280 M
...Pa 1320 0

..Mass 920 M

...Ohio 570 N
.N.Y. 1130 0
...Neb 590 0

...Ind 1160 T

...Ky 1420 H
W.Va 1420 H
...Ga 1210 H
.Ohio 1378 H
...Pa 920 0
.N..T 1100 S
...Pa 780 K
.PR 1370 H
..R.I. 630 M
.PR. 1420 H
..N.C. 680 S
...Fla 560 0

WQAN Scranton Pa 880 M

WQBC Vicksburg ...Miss 1360 0

WQDM St. Albans ...Vt 13900

WQXR New York .N.Y. 1550 0

WRAK Williamsport ..Pa 1370 H

W RAW Reading Pa 1310 H

WRBL Columbus Ga 1200 H

WRC Washington ..D.C. 950 0

WRDO Augusta Me 1370 H

WRDW Augusta Ga 1500 H

WREC Memphis Tenn 600 0

WREN Lawrence Kan 1220 0

WRGA Rome Ga 1500 H

WRJN Racine Wis 1370 H

WRNL. Richmond Va 880 M

WROK Rockford Ill 1410 M

WROL Knoxville ...Tenn 1310 H

WRR Dallas Tex 1280 M

WRTD Richmond Va 1500 H

WRUF Gainesville Fla 830 S

WRVA Richmond ValllOS

WSAI Clneinnatl ...Ohio 1330 0

WSAJ Grove City Pa 1310 H

WSAL Salisbury Md. 1200 K

WSA N Allentown Pa 1 440 M

WSAR Fall River . .Mass 1450 0

WSAU Wausau Wis 1370 H

WSAY Rochester ...N.Y. 1210 H

WSAZ Huntington .W.Va 1190 O

WSB Atlanta Ga 740 W

WSBC Chicago Ill 1210 H

WSBT South Bend ..Ind 1360 M

WSFA Montgomery ..Ala 1410 M

WSGN Birmingham . Ala 1310 H

WSIX Nashville ...Tenn 1210 H

WSJS Winston-Salem NC 1310 H

WSLI Jackson Miss 1420 H

WSM Nashville Tenn 650 W

WSMB New Orleans ..La 1320 0

WSM K Dayton Ohio 1380 j

WSNJ Bridgeton N.J. 1210 H

Call Location 5* J

fe.3 P.

W80C Charlotte ...N.C. 1210 H
W8PA Spartanburg ..S.C. 920 0

WSPO Toledo Ohio 1340 0

WSPR Springfield .Mass I 140 M
WSTP Salisbury ...N.C. 1500 H

W3U I Iowa City I a 880 H

WSUN St. Petersburg Fla 620 0
WSVA Harrisonburg . .Va 550 11

WSVS Buffalo N.Y. 1370 F

WSYB Rutland Vt 1500 H

WSYR Syracuse N.Y. 570 O

WTAD Quincy 111900 0

WTAG Worcester . . .Mass 580 0
WTAL Tallahassee ...Fla 1310 H
WTAM Cleveland . . .Ohio 1070 W
WTAQ Green Bay . .Wis 1330 O

WTAR Norfolk Va 780 0

WTAW College Sta ..Tex 1120 M
WTAX Springfield ....D1I2I0H
WTBO Cumberland ...Md800K
WTON Minneapolis ..Min 1250 0
WTEL Philadelphia ..Pa 1310 H
WTHT Hartford ...Conn 1200 H
WTIO Hartford ...Conn 1060 W

WTJS Jackson Tenn 1310 H

WTMJ Milwaukee Wis 620 O

WTMV E. St. Louis. Ill 1500 H

WTNJ Trenton N.J. 1280 M

WTOC Savannah Ga 1260 0

WTOL Toledo Ohio 1200 H

WTRC Elkhart Ind 1310 H

WVFW Brooklyn ...N.Y. 1400 M
WWAE Hammond ....Ind 1200 M

WWJ Detroit Mich 920 0

WWL New Orleans ...La 850 T
WWNC Asheville . . . .N.C. 570 0
WWRL Woodslde ...N.Y. 1500 H
WWSW Pittsburgh ... .Pa 1500 H
WWVA Wheelng .. .W.Va. 1 160 8
WXYZ Detroit Mich 1240 0

UmetumGteateit

ytpvkGoHma

\ Va£ue!

OnC*/ '/1000th Second
Candid Undek
f/OO^s

NEW! FASTER
f4.5 LENS!

NEW! Built-in
VIEW-FINDER

♦

FOUR Good Reasons Why A
VmIvzX Department Means

BIG PROFITS

SMALL INVESTMENT! UniveX cam.

eras and accessories are the lowest-priced in
all photographic history! It takes a small in-
vestment to stock and display the full line.

LITTLE SPACE REQUIRED! Be-

cause UniveX cameras and projectors are
amazingly compact and streamlined— a dra-
matic, eye-compelling display can be presented
on one counter — or in one small booth!
NO SERVICING! UniveX cameras and
projectors are easy to understand; simple to
operate! No technical knowledge is needed on
the part of your clerks. And you have no
servicing problems, for all servicing is handled
by your customers direct with the factory!

NATIONALLY ADVERTISED! Con-
sistent, dynamic advertising tells the dra-
matic UniveX story of value, performance
and results in the magazines read by your
customers! Your UniveX counter and win-
dow displays will bring in more traffic . . .
more sales . . . more profits!

For complete details regarding UniveX prod-
ucts, prices and promotional plans write
Universal Camera Corporation; New York,
Chicago, Hollywood.

FAIR TRADE PROTECTED IN 43 STATES

TRICOR f3.5 LENS

Photoflash Synchronizer Built-in

Automatic Film Transport

Here's the only completely AJI-Anwnan Made
camera that gives you the speed, the performance
and the prize-winning results you d expect only
from the most expensive foreign makes! Thmk ot
halting a 200-mile-per-hour racing automobile. A
shutter with l-lOOOth-of-a-second speed gel' .(-true,
sharp, clear! Think of taking perfect nighttime shots
-indoors or out! The built-in photoflash synchronizer
snitch mokes it eosy! Think of cutting your negat.ve
costs in half! The most economical UnntX 33 mm.
film, makes it possible!

No longer need you envy those who own expen-

■ sive foreign-made speed

cameras. See the amaz-
ing UniveX Mercury
today! Many dealers
offer convenient, easy-
payment terms. Or
send coupon for FREE
booklet!

CHECK THESE
FEATURES!

Allmet.1 focal plan* .hutter:
I Built-in opliccl view-6nderl
i Automatic film iraneport —

double expoturea itnpoeaible!
i Interchangeable 1

When you visit the New York
World's Fair, don't mitt the
dramatic presentation of the
entire UniveX line in the
Communications Building)

USES 69< FILM!

Here's the new 1939 movie cam.
era that gives you the simplicity
of operation ... the dependable
performance ... the thrilling
life-like results you'd expect only
from high-priced cameras.

So dependable is this new
i i~;..' — T •, UniveX. with fast /4.5 lens and
built-in optical v„w.finder- ,ha, we mee

satisfactory results, or a new roll of film free "
Mov.es are easy to take with the new UniveX'

Ifcai 'Va " "£'"* snaPsh°'*! And with the 69r
I UniveX film roll, your movies actually cost less
than snapshots!

I flllvAmV'"'s Rr«'«< movie value, because
„ , makcs m°re m°"' cameras than any other
manufacturer. Ask your dealer today to show you

■o„aTvah0na,,J,rW "W UnivtX wi,h '» "na-
tional h.gh.pnced features. Many dealers now offer
the new UniveX on convenient easy payment terms.

UNIVIX MOVII
CAMIIA MICIS
1TART

*925

•■US id.. ... **"•« rem

"■Mill,,, (M

c«"l»ra.

'emlii

Reproductions of typi-
cal UniveX ads which
are now appearing tn
National Magazines.

lU. Sncatt To Oum The

NEW 1939 UnivtX

MARCH. 1939

7939 JUNE 79391

WED

THU

FRI

SAT

OPEN these two
days to Jobbers,
Manufacturers,
Manufacturers'
Agents, and Manu-
facturers' Engi-
neers only. ^^^^^

OPEN on these
two days to Serv-
icemen, Amateurs,
Retailers, Students
and others.

tyr me^%

National Radio Parts Trade Show

Sponsored by Radio Manufacturers Association and Sates Managers Club
^Executive Office— 53 West Jackson Boulevard, Chicago, Illinois

RADIO TODAY

Jlodw Hmes-?Mst mi Pjiesad

Including receiver designations that have come and
gone, — as makers have dropped out of business,
entered other lines, or adopted new tradenames

Radio-set trade names still being used — Bold face.
Radio-set trade names no longer being used — Light face.
Manufacturers no longer using tradename, but
still operating — *Ligbt face with asterisk.

Abbey
ABC

AC Dayton

Ace

Acme

Acratone

Ad-a-unit

•Adler-Boyal

Admiral

Admiralty

Adrola

Advance

Aer-A-Dyne

Aero

Aerodyne

Aeronautic

Aeronautical

Aeroking

Aeromaster

Aetna

Ainsworth

Air Castle

Airex

Air King

Air Line

Airmaster

Air-Ora

Air Pilot

Airtone

Airtune

Ajax

Aladyne

Algo

All-Amax

All-American Mohawk

Amaco

Ambassador

Amborola

Ambu

Amerex

American

American Beauty

•American -Bosch

American Television

Amertron

Ampiola

Amplex

Amrad

•Amsco

Andrea

Angelus

Ansley

Apex

Apollo- Dyne

Appleby

Appel-Henderson

Aragain

Arborphone

Arcadia

Argus

Ariel

Arionola

Aristocrat

Arlington

Arkay

Arrow

Artae

Astral

Arvia

Arvin

Atchison

Atec

Atlas-Colonial

A.T.R.

Atwater-Kent

Audiola

Audio-Tone

Aurophone

Aurora

Austin

Autocrat

Automaster

Automatic

Autophc-ne

Autovox

Aztec

Babv Grande

Baird

Balder

Baldwin

Balkeit

Barblev

Barfield

Barker

Bat-By-Les

B & P

Bear Cat

Beavertone

Bee-Zee

Belle-Claire

Bell

Bell-Knap

Belmont

Bendix

Berkshire

Berstan

Bestone

Betta-Tone

Big Six

Biltmore

*Birnbach

Blair

Blue Bird

Blue Streak

•Bosch

Bosworth

Brandes

Branston

Breco

Bremer-Tully

Breting

Brown Teletone

Brown & Manhart

Browning

Browning-Drake

*Bruno

Brunswick

Bryant

Buckeye

Buckingham

Buckwalter

Buick

Bulova

Bush &

B. W.

..—

Lane

Cadillac

Caladyne

Calvert

Cameo

Capehart

Capital

Cardinal

Cardinola

Carldal

Carillon

Carol-Dyne

Carteret

Caruso

Case

Cascade

Cavalier

Cavalcade

Celeste

Central

Century

Champion

Chaniplain

Chanticleer

Chatham

Chevrolet

Chief tan

Chrysler

Cincodyne

Circulex

Clago

Claradyne

Claratone

Clarion

Clearbrook

Clearfield

Clear-o-dyne

Cleartone

Cleveland

Climax

Clinton

Cole

•Colonial

Columbia

Combidyne

Compendyne

Cora Rad

Concerdyne

Concert Grande

Concertola

Concourse

Consolette

Ccnsomello Grand

Continental

Corcoran

Corona

Coronado

Cosmopolitan

Counterphase

Country Gentlemen

Courrier

Crescentyne

Crimp-O-Dyne

Crosley

Crown

Crusader

Curkoid

Davis

Davison-Haynes

Day Fan

•Dayrad

Dayton

Deem

De-Exer

Defiance

He Forest

Deltrickson

•DeJur

Delano

Delco

De Luxe
Derby

Deresnadyne
De Soto
Detrola
TTeWaTd
DeWitt-LaFram:e'
Dexter
Dial Less
Diamadyne
Diamond T
Diamonola
Diana

Dimmock-B' gart
Distantene
: Dodge
Doerle
Dolores
DorainAire
Dow
Dray
Drexel
•Dubilier
Dumont

Duncan-Stern field
Dunn
Dunn-Hall
Duodyne
Duotone
Duotrola
Du-Ra-Co.
Dymac
Dynaphone

Eagle

Eaglet

Earl

Eastern

Echo

Echophone

Ecodyne

Edco

Edison

Edison Bell

Eisemann

Electradyne

Electrola

Electrotone

Elektric

Eling

Elkay

Elmco

El-Rey

Emerson

Enter son ette

Emmons-Premler

Empire

Ensign

Equidoron

Equidyne

Erla

Eschner

Escodyne

Espey

Essex

Eveready

Fada
Fadalette
Fairbanks -Morse
Fairview
Faraday
Faraway
Farrand

Fearless Simplex
Federal
Fenway

Ferguson ^^^^^
Ferranti
Ferrodyne
Finch
Fine-Arts
Firestone
Fischer-Smith
' - Elex-O-Dyne
Fleetwood
Forbes
Ford
Fordson
Franklin
Freed

Freed-Eisenrann
French
Freshman

Freshman Masterpiece
Frontinac

Galvia

Gamble-Skogmo

Gardner

Garod

Gar-Shear-Dyne

Gaylord

General

General American

General Auto

General Electric

General Five

General Motors

•General Radio

General Television

Gilfillan

Globe Trotter

Gloritone

Gold Medal

Gold Seal

Gold Star

Goldcrest C'ear-OtDyne

Golden-Leutz

Goldentone

Goldfinch

Goodyear

Gordon

Gossard

Goulding ;

Glares & Jones

Grebe

Grand Rapids

•Graybar

Greeley

Green Seal

Greenwich

Grimes

Grossman

Griinow

Gulbranson

Haigis
Hail

•Halldorson

HaMicrafters

Halowat

Halson

Hammarlund

Hammarlund-Roberts

Harding

Harley-Davidson

Harmonic

Harmonson

Harold Bell

Harmony

Hartman

•Hatry & Young

Hemco

Henderson

Herald —

Heraldyrte He Luxe

Herzog

Hetro

H.F.L.

Hilltop Six

Hi-Lo

Hi-Power

Hollywood

Holmes

Hoodwin

H oward

Hubco

Hudson

Hudson-Ross

Hubert

Huntington-Williams

Hupmobile

Hy-Pex

Hy-Tone

I-C

•I C A

Illinois

Imperial

Indian ^^

Inductrole

Inland

Irmilette

International

International Ba''

Interocean

Ion

Irving

Isofarad

Jacksqn

Jarkson Bell

Jefferson-Travis

Jenkins

Jewell

Jewett

Jolley

Jones

J iist -Rile

Kaar

•Kadette

Kanawha

Karadio

Kardonstrip

Kayo

Keller-Fuller

Kellogg

Kenman

Kennedy

Kent

Keystone

King

King Cole

King-Hinners

Kingston

Kirk Recreation

Kismet

Kisonet

Klitzen

Knight

Roister

Lacault

Lafayette

Lamb

Lance

Lang

LanSing

Lark

Larkin

La Salle

Lasco

Lascodyne

Laurehk

Layton

Learadio

Le Bron

Le Calle

Leich

Lemco

Le. Mor

Lenford

Lester

Lent?

Lewiri

Lexington

Litwrt; . -

Lincoln

Little Giant

Lloyd C. GretR-

Lionel

London

Loftte-Wliite

Logodyne

Lnrtfforia -

L'Tatro

Luxcr

Lyric

Nracadyne

Macy

Madison-Moore

Magnadyne

Magnatone

•Magnavox

Magnutrol

Main

Majestic

Major

Yanning-Hall

Manhart

Marathon

Mareoniphon*

Marcophor.e

Marine

Mariin

Marlodyue

Marwol

Master

Masterdyne

M/asterpiece

Masterola

May

Mayfair

Mayflower

M&volian

McMurdr-Silver

McMillan

Meco

Meissner

Melburn

Melco-Supreme

Mel-O-Dee

Melody

Melody King

Melodyne

Mell-O-Tcne

Mercury ^B

Mercedes

Merrell

Meteor

Microdyne

Midwest

Mikado

Minerva

Minuet

Minute Man

Hlrzco

Mirro-dyne

Mission Bell

Mcbiletlt

Mohawk

Monarch

MonooTTie-

Monrona

Montrodyne

Montroset

Mo-Re-Co

Morradyne

Morton & Bork

Motomaster

Motorola

Motoset

Motortone

Murdock

Musique

Mutual

Mysto

Nash

Nassau

National

Nazeley

Neo-Dyne

Nestor

Neutrodyne

Neuway

Neutrowound

Newlands

Newport

Niagara

Nightingale

Neutrola

No-Bat-Ry

Noblitt-Sparks

Nocturne

No-Dial

Norco

Norden-Hauch

Northwest

Novadyne-'"

Noveo

Nunn-Landon

Nu-Toae

Nyaccoflex

Obermiller
Oard
Octo

Octophase
Okay

OldsmoLile
O'Neill
•Operadio
Orator ■
Oriole
Orpheon
Orpheus
Ortho
-Orthofyrre
Ortho-Sonic
Oslo

Ostermeier
Overtone
Ozarka

Pacific

Packard

Packard Bell

Padre

Page

Parkin

Parla

Pathe

Parmak

Patterson

Paulson & Hoppi

Peak

Pearl

Peerless

Pelrad

Pelradyne

Perm C

Penrad

Perasco

Perfectone

Peter Pan

Philco

Philmore

Philharmonic

Phusiflex

Pierce Arrow

•Pilgrim

Pilot

Pioneer

Plaza

Pliodvne

Plio-6

Plymouth

Potydyne

Pontiae

Pomco

Popular

Port-o-raatie

Porto-Dvne

Port-O-Radio

Portrola

Power-Argue

Powerola Q

Powertnne

Premier

PTiess

Prima

Pritchard-Roever

Quad

Oualiphf n> -.._
Queen
Q-R

R
Radak
Radiant
♦Radian
Radiette
Radiobar
Radiodyne
Radio-Fone-O-Graf
Radiograph
Radiokeg
•Radiola
Radiophone
Radiotel
Radiotone
Radiotrope
Radiovogue
Radisto
RaDy-Namic
Radyne
Ragan-Grant
Rambler Six
Ramway

Handle

Ranger

Tanuerflex

Rapco

Taylor

Ra-Vox

Te-lek-tcr-et

Rawlings

Teleradio

Raydeluxe

Teletone

•RCA

Temple

RCA-Victor Templetone

RCI

Terry

RDX

T & H

Reactodyn

s Thermiodyne

Recepton

Thomas & Silverman

Beeeptrad

Multifiex Thomb Thumb

Regal

Thoroboro

Regenooi i

e Thorola Islcdyne

Regent

Tiffany

Reiner

Tiffany-Tone

Rentier

Tilman

Ren'wick

Timson

Republic

Tiny Tim

Revere

•Tobe

Rextron .

Todd

R F L

Tone-A-Dyne

Rich

Torodyne

Rico-Dyne

Tranadyne

Ri vr 1 i

Trans-Atlantic

Roamic

Transeontinenlal

RME

Transitone

Bobbins

Traul

Rwfeenr

Trav-ler

Rctofor

Trebor

Royal

Trego

Royal 8ist> tr. T R F

Rovale

Trianola

R, ;.

Trinity

Russell

Troubadour

RuHc

Troy
_ Tru-Dial
s True Tone

Salem

Tustin

Sampson

Truman

Sara

20th Century Air Kit

■

Sargent

Twitchell

Savil
Scott

Tyrman
Tzigan

Scout

Seery-Bartell tj
Selectodyne i-r<->
Sentinel .'«

S^Car.son [i~

SHST £Sn-

Silvey ubl'

Simon

Simple Simon V

Simpleform Valley

Simplex

Valleytone

Simpli-Dyne Van-Asche

Sincroflex

Van Sicklen

Sky-Chief

Van Staagen

Sky-Hawk

Veriphcne

Sky- Rider

Vesco

Slagle

•Victor

Sleeper

Victory

Solevy

Victrola

Solex

Viking

Somerset

Vitaradio

Songbird

Vitatone

Sonara

Voceleste

Sovereign

Voco

Sparton

Vogue

Splltdorf

Voisometer

Square T>

;al Volotone

Standard

V' ltamp

Standard*-

Standisli

Stanley

Wallace

Stanrad

Waltham

Stanwood

Ware

Star

Warner Hanson

Star-Raid

Warwick

Steirdte

Watterson

Rtelnmetz

Wave-Master

Sterling

Wav-O-Dyne

Stewart

•Webster

Stewart- VS

arner Wells

Story .1

"lark Wells-Gardner

Strontberg

-Carlson Western Electric

Studebake

r Westinghouse

Sumter

Weston

Sun

Wlreeler

Sunbeam

White

Super

Wliiteland

Superadio

Wliitestone

Superdyne

Wilcox

Superfive

Wilcox-Gay

Superflex

Wings

Superfone

Wippel-Raino

Superior

Wolverine

Superiord.

"ne Wonder

Superlator

Wondertone

Super-Rei

nartJ World

Super-Syn

rphonlc World Record

Supertone

Workrite

Superiorflt

x 'Wright De Coster

Superola

Wurlitzer

Super-Pre

Supreme

Sweeney

Sylfan

Zaney-Giil

Symphonic

Zenette

Synohroph

jse Zenith

Sypher

Zephyr

•Indicates this trade nam« is no longer being used to designate a radio set, but that manufacturer is still in business.

MARCH, 7939

####

he slept

'&SSsh3ta,

WHAT OOES 1CA ^

\\ /

RCA Tubes— the Heart of Broadcast-
ing Stations— and of Your Home Set

Imagine Rip's Surprise on Waking to
Find Radio City — First thing Rip saw
when he woke up was the RCA Building.
Amazed, he decided to investigate. So he
wandered around, puzzling at the letters
"RCA" everywhere about him. Opening a
door, he found a pretty girl and asked :

The surprised receptionist replied that
RCA is the symbol of the radio age —
that it stands for the Radio Corporation
of America, a family of organizations
engaged in services in every field of ra-
dio . . . and explained how radio had
developed from Marconi's idea. Then
she told Rip about:

Finer Reception with RCA Victor Radios
and ,RCA Victrolas

The transmitters, giant power tubes,
all the astonishing variety of broad-
casting equipment, Rip heard, were
made by the RCA Manufacturing
Company. "Fine," said Rip . . . "but
how do folks hear broadcasts?" So
the girl explained about home re-
ceivers built by RCA Victor.

The engineers who design broad-
casting equipment create RCA
Victor Radios and RCA Victrolas.
There are RCA Victor instruments
priced for every need and purse
range — from "Little Nipper Ra-
dios" and other low cost table mod-
els to glorious high fidelity consoles.

RCA's Roie in Safety at Sea
and in the Air ^^

RCA as Radio's Leading Educator

Victor and Bluebird Records offer
music lovers the greatest artists and
bands. RCA Victrola Attachments
connect to any modern radio and
play records through the radio. RCA
Victrolas combine radio and record
entertainment at prices from $19.95
to $355.00, f.o.b. Camden, N. J.

RCA's Role in Television

Radiomarine Corporation of America
supplies radio safety devices such as
the RCA "direction finder" that af-
ford protection for ships at sea. RCA
Manufacturing Company helps make
flying safer with such developments
as the "radio compass."

By training young people in technical
radio work, RCA Institutes, Inc., per-
forms a real public service in develop-
ing skilled workers for radio. RCA
Institutes Press publishes the RCA
Quarterly Review ($1.50 per year)
and other technical radio publications.

ifft, RADIO CORPORATION of

RADIO CITY, NEW YORK

RCA Manufacturing Co., Inc. National Broadcasting Company R.C.A. Communications, Inc. RCA Institutes, Inc.

The Story of the Services of RCA

R.C. A. Communications, Inc.. .a message
service with the speed of lightning

Rip learned that one member of the
family, R.C. A. Communications,
Inc., operates a world-wide radio
communications system with direct
circuits between the United States
and 43 foreign countries, and with
ships at sea. A service of immense
importance to our modern life.

RCA Victor Radio Entertainment Wher-
ever You Go or Wherever You Are

RCA Victor Auto Radios give
motorists radio entertainment
as they drive. The new RCA
Victor Pick-Me-Up Radio is
a portable set that can be car-
ried anywhere. Other RCA
Victor battery sets serve un-
wired farms and homes.

Gosh. ..said Rip... does everyone know
how much radio service is available

from RCA?

Rtp Learned of the Great Broadcast-
ing Services of NBC

And she went on to explain how
RCA Laboratories have helped
develop broadcasting and other
modern applications of radio
through research which began
with communications and has
branched out into research in
every field of radio.

Rip marveled at the contribution I
National Broadcasting Company mal
to American culture through its t
nation-wide networks and its 01
standing programs . . . the world's b
music, great plays, news and edu
tional programs, political broadcas
and many other features.

Cr*\> fk ft Millions enjoy movies more because
ViJY researcn *n RCA Laboratories helps
,1 create finer motion picture sound. RCA
Photophone equipment records sound
on film at many leading Hollywood
studios. Pictures talk at more than
5,000 theatres through RCA Photo-
phone Reproducing Equipment.

Rip learned from his charming com
panion that many towns and citie
from coast to coast are protected b
RCA police radio which makes
possible for squad cars to be on th
scene of any disturbance within onl
a few minutes.

RCA's answer is millions do — but we want every-
one to understand it even better. That's why RCA
has a comprehensive exhibit at the New York
World's Fair. In it will be displays that will show
just how much radio can mean to everyone and
dealers, especially, will see how many opportuni-
ties RCA offers for making money.

AMERICA

Radiomarine Corporation of America

It will pay you to visit the
RCA Building at the World of Tomorrow

You'll learn more about the services you
sell or can sell ! Get a thrilling picture of
how RCA puts the world's greatest radio
experience to work to create values that
mean greater sales for you. You'll under-
stand better than ever why it pays to push
the merchandise mentioned here and in the
pages which follow.

You'll see television demonstrated at the
Fair and discover how this new science will
some day put profits in your bank account.

Yes, a visit to the RCA Building will pay
in dollars and cents — because it will give
you a renewed enthusiasm that will be re-
flected in sales. For greater profits — in radio
and television — it's RCA All the Way.

Listen to the "Magic Key- of RCA" every Sunday, 2 to
3 P. M.. E. S. T., on the NBC Blue Network.

\0i 7m Mc&i RADIOS

EMb Eta

SENSATIONAL NEW MODELS DESIGNED,
STYLED AND PRICED FOR FAST SELLING!

Once again RCA Victor steps out in front with new sets
that sell. Priced right for you and for your customers!
Packed with features that make them want to buy!
Designed and styled so those who come to look will
remain to buy! Values such as these are sending RCA
Victor dealers off to a flying start towards another great
RCA Victor year. Make sure you cash in on them, too.

RCA MANUFACTURING CO., INC., CAMDEN, N. J. • A Service of the Radio Corporation of

RADIO TODAY

nn^^z

^fita*

DECIDE NOW TO BECOME ^

AN RCA VICTOR MUSIC MERCHANT-
HANDLE VICTOR AND BLUEBIRD RECORDS

The re-birth of the record business is one of the most re-
markable phenomena of recent American business history.
If you are not handling Victor (both Red Seal and Black
Label) and Bluebird Records you are missing a rare op-
portunity to make more money not only this spring— but
for years to come. Think what the record business offers:

1— Cash sales — no instal-
ment risks.
2 — Increased store traffic.
3 — No trade-ins.
4 — Repeat sales.

5— Low capital investment
— quick turnover.

6 — Stimulant to your in-
strument sales in all
price brackets.

Your RCA Victordistributor will gladly furnish information
about basic stock and plans for quick, inexpensive install-
ation of aVictor and Bluebird Record department. He will
aiso tell you the complete advertising story — radio, maga-
zines, and newspaper; and show you the many sales-making
plans that are yours as an RCA Victor Music Merchant.

GET IN THE RECORD BUSINESS THIS SPRING
SEE YOUR RCA VICTOR DISTRIBUTOR NOW!

A TREMENDOUS SALES MAKER
-THE VICTOR RECORD SOCIETY

You are familiar with the famous Victor
Record Society offer. In one short year more
than 100,000 members have joined. And —
this is important to you — not only have most
of these members continued to buy Victor
and Bluebird Records, but thousands have
graduated to higher priced RCA Victrolas.
This is just one of the many sales-mak-
ing plans which go to work for you when
you become an RCAVictor Music Merchant.

For finer radio performance —
RCA Victor Radio Tubes

VICTOR RECORDS

RCA MANUFACTURING CO., INC., CAMDEN, N. J. • A Service of Radio Corporation of America

M^RCH, 7939

THE striking RCA Victor Radio Tube display illus-
trated is the Spring Tonic your radio tube business
needs now. Use it to start a big push on RCA Victor
Radio Tubes that will mean real profits for you.

This display is only a part of the fine 1939 RCA
Victor Window Display Service which consists of:

1. Four separate 8-color window displays, each made up of
a number of individual pieces — any or all of which may
be used effectively by itself as a display for different parts
of your store.

2. Two attractive window streamers will be furnished with
each of the four window displays.

RADIO
TUBES

3. A quantity of World Series score sheets.

4. A supply of complete 1939 collegiate football schedules.
This sales-getting material will help you make more
money— not only this Spring— but all year long. Ask
your RCA Victor Distributor how you can obtain
this service. •

Listen to the "Magic Key of RCA" every Sunday, 2 to) P. M., E. S. T.

on NBC Blue Network

For finer radio performance—RCA Victor Radio Tttbes

"KCA 1/&C&I RADIO TUBES

RCA MANUFACTURING CO., INC., CAMDEN, N. J. • A Service of the Radio Corp. of America

RADIO TODAY

^^H HP / «

9Bl -^'V^!''1 -^ arc, .k]' * ■ '/

Illustrated is RCA VictorConsoleRecorderMI-12700.
This instrument records and reproduces records at a
speed of 78 or 33% revolutions per minute using
10", 12" or 16" discs. Employs inside-out or outside-
in recording methods. Visual indicator. New cutting
and recorder head with cutter-head float stabilizer.
High fidelity amplifier and speaker. Volume and tone
control. Completely self-contained, providing all nec-
essary elements for recording and £ _ _ _..,
reproducing discs and records with 3 Ag kvU
RCA Velocity Microphone ... mm >J

YOU PROFIT IN ALL THESE WAYS!

'• On the recordings made in your store.

2. On the sale of RCA Victor Recorders to your
customers.

3. On the sale of RCA recording discs.

4. On recordings made outside your store.

5. By the great increase in your store traffic— making
extra sales to those drawn by this new attraction.

6. By making sales of RCA Victrolas, RCA Victor
Radios, Victor and Bluebird Records, and many other
musical instruments for which this attraction will
create new interest.

A Profitable Brand New Business
Offered to You on a Platter!

RECORDERS

Custom recording is sweeping the
country . . . and RCA Victor offers
you now a plan to establish you as
a leader in this growing business.
Your prospects are legion for the
newRCA Victor Recorders and for
the recording service you can offer
in your store. Music Students, Pub-
lic Speakers, Business Offices,
Clergymen, Lawyers, are but a few.
Now, for the first time, you can
offer highly efficient record mak-

ing equipment by RCA Victor, the
leader in record making and record
playing instruments.

Backed by outstanding promo,
tional material, displays, and ad-
vertising, RCA Victor Recorders
mean new business. And new
profits! In addition, this business
means new stimulation to all your
musical instrument business. De-
tails from your RCA Victor dis-
tributor— or write us in Camden.

'KCA 1/iC&b RECORDERS

RCA MANUFACTURING CO., INC., CAMDEN, N. J. • A Service of the Radio Corp. of America

MARCH, 1939

Telegrams

get

through!

GET THE EYE . . .
GET ACTION!

■r

/^WESTERN UNION

NIGHT LETTERS

COST IS SMALL

RADIO TODAY

1939-1940

Including
RADIO TRADE DIRECTORY

RADIO

TODAY

CALDWELL-CLEMENTS, INC.
480 Lexington Avenue, New York

MODERN AS

THE WORLD OF
TOMORROW

LIKE the great New York World's
J Fair of 1939, Sylvania's two giant
radio tube plants are "modern as the
world of tomorrow."

Housing the most efficient produc-
tion and testing equipment known to
the industry ... a creative engineer-
ing staff second to none . . . and over
3,000 skilled workers— these two plants

(at Emporium, Pa. and Salem, Mass.)
have rightly earned for Sylvania its
position as one of the leaders in the
radio tube industry.

A guided trip through either of
these great plants will show you the
marvels of modern tube manufacture
at their best. Why not plan on visiting
us during your trip to the Fair?

FAIR FACTS: The New York World's Fair— opens April 30th , . . covers 1,216 acres
of land . . . contains 400 buildings and the world's greatest amusement park . . . cost
$150,000,000 to construct. The Trylon towers 700 feet tall, while the Perisphere will be
higher than an 18-story building.

RADIO TODAY

1939-40 RADIO YEAR BOOK and TRADE DIRECTORY

Vinton K. Ulrich,

Year Book Editor

Published annually by

CALDWELL-CLEMENTS, INC.
480 Lexington, Ave., New York, N. Y.

Orestes H. Caldwell
Editor

M. Clements
Publisher

INDEX TO PRODUCTS

Product Page

AC POWER PLANTS 66

ACOUSTIC CHAMBERS 72

ACOUSTIC MATERIALS 70

ADAPTERS, TEST 67

AIRCRAFT RECEIVERS .... 45
AIRCRAFT TRANSMITTERS. 76

ALBUMS, RECORD 63

ALIGNMENT TOOLS 67

ALL-WAVE ANTENNAS .... 47
AMATEUR RECEIVERS .... 45
AMATEUR TRANSMITTERS. 76

AMPLIFIERS & KITS 70

ANALYZERS, RADIO SET.. 67
ANTENNAS & ACCESSORIES 47
ANTENNAS, TRANSMITTING 76

ANTENNA WIRE 7S

ANNTENUATORS (Precision) 64
AUDIO OSCILLATORS... 59, 67
AUDIO TRANSFORMERS... 75

AUTO ANTENNAS 47

AUTO RADIO CONTROLS,

FITTINGS, ETC 49

CABLE REPLACEMENT

TOOLS 49

AUTO RADIO SETS 45

AUTOMATIC CODE SENDERS 74
AUTO RECORD CHANGERS.. 63
AUTOMATIC TUNING UNITS

& PARTS 48

AVIATION RECEIVERS 45

AVIATION TRANSMITTERS. 76

BAFFLES 72

BATTERIES 50

BATTERY CHARGERS .... 49
BATTERY CHARGING

RECTIFIER TUBES 66

BATTERY PORTABLE SETS 45
BATTERY PLUGS (Sec hard-
ware & misc. parts) .... 57

BINDING POSTS 57

BOOKS, RADIO SERVICE... 80
BROADCAST RECEIVERS .. 45
BROADCAST TRANSMITTERS 76

CABINET MOLDERS 69

CABINET, RADIO SET 49

CABINETS, RECORD 63

CABLE & WIRE 78

CARBON MICROPHONES ... 61

CARBON RESISTORS 64

CATHODE RAY

OSCILLOGRAPHS 59, 67

CATHODE-RAY TUBES 77

CEMENTS 62

CENTRALIZED SOUND

SYSTEMS 70

CERAMICS (Insulation) ... 58

CHARGERS. BATTERY 49

CHASSIS (Metal) RACKS

& SUPPORTS 58

CHOKES, AUDIO 75

CHOKES, R.F 50

CIRCUIT BREAKERS 74

COIL FORMS 50

COILS, I.F. & R.F 50

COIL SHIELDS 57

COILS, SPEAKER FIELD ... 72
COILS, TRANSFORMER ... 75
COIL WINDING EQUIPMENT 50
COMBINATIONS,

PHONOGRAPH-RADIO ... 45
COMMERCIAL RECEIVERS.. 45
COMM'L TRANSMITTERS... 76
COMPOSITION RESISTORS.. 64

CONCENTRIC CABLE 78

CONDENSERS, FIXED .... 50
CONDENSERS. VARIABLE.. 54
CONDENSER MICROPHONES 61
CONDENSER SPECIALTIES.. 59

CONDENSER TESTERS 67

CONES. SPEAKER 72

CONNECTORS 57

CONSOLE CABINETS 49

CONTACT MICROPHONES.. 61
CONTROLS. AUTO RADIO .. 49

CONVERTERS. ROTARY 66

CORDS. ATTACHMENT .... 78

Product

Page

Product

Page

CRYSTALS, DIAL 54

CRYSTALS, PIEZO-ELECTRIC 76
CRYSTAL CALIBRATORS

OR OSCILLATORS 67

CRYSTAL HEADPHONES ... 57
CRYSTAL MICROPHONES .. 61

DC GENERATORS 66

DECALCOMANIAS 54

DIALS & PARTS 54

DISCS 63

DRILLS 76

DRY CELLS 50

DYNAMIC HEADPHONES .. 57
DYNAMIC MICROPHONES.. 61

DYNAMIC SPEAKERS 72

DYNAMOTORS 66

ELECTRIC PHONOGRAPHS. 63
ELECTRIC TUNING UNITS

& PARTS 48

ELECTROLYTIC

CONDENSERS 50

ELECTRONIC MUSICAL

INSTRUMENTS 60

ELECTRONIC TUBES 77

ENAMELS 62

EQUALIZING, CONDENSERS 54

ESCUTCHEONS 54

FACE PLATES (See

Escutcheons) 54

FACSIMILE RADIO SETS. .. 45

FARM RADIO SETS 45

FARM RADIO VIBRATORS. 82

FELT WASHERS & GASKETS 57

FIBRE (Insulation) 58

FIELD COILS, SPEAKER... 72

FIELD EXCITERS 72

FIELD STRENGTH METERS 59

FILTERS, POWER LINE 69

FIXED RESISTORS 64

FLASHLIGHT BATTERIES.. 50

FLAT WOVEN CABLE 78

FLEXIBLE SHAFTS 49

FREQUENCY CONTROL

EQUIPMENT 76

FREQUENCY

MEASUREMENTS 76

FREQUENCY MODULATORS

(Test oscillator) 67

FUSES, INSTRUMENT 57

GAS ENGINES 66

GAS ENGINE CHARGERS... 49

GAS ENGINE PLANTS 66

GAS FILLED RECTIFIERS.. 66

GENEMOTORS 66

GLOBES. RADIO 73

GRID CLIPS 57

GRILLE CLOTHS 72

GROMMETS 57

GROUND CLAMPS 47

GUY WIRE 78

HAND DRILLS 76

HARDWARE & MISC. PARTS 57

HEADPHONES 57

HOLE CUTTERS 76

HOME BROADCASTING

MICROPHONES 61

HOME RADIO SETS 45

HOOK-UP WIRE 78

HORNS. SPEAKER 72

I.F. TRANSFORMERS 50

IMPEDANCE BRIDGES ..59,67

INDICATOR LIGHTS (See

Dials & Parts) 54

INDUCTANCE SPECIALTIES. 59
INDUCTANCE TRIMMER

UNITS 48

INDUSTRIAL CONDENSERS. 50
INDUSTRIAL RESISTORS... 64

INDUSTRIAL TUBES 77

INSULATED CABLE & WIRE 78
INSULATING COMPOUNDS.. 62

INSULATION 58

INSULATORS

Transmitter antenna 76

Receiver antenna 47

INTER-COMMUNICATORS .. 70
INTERFERENCE LOCATORS. 59
INTERFERENCE ANALYZERS 67

INTERPHONES 70

INVERTERS 82

JACKS 57

KNOBS 54

LABORATORY EQUIPMENT. 59

LACQUERS 62

LIGHTNING ARRESTERS .. 47

LINE FILTERS 69

LITZENDRAHT WIRE 78

LOCK WASHERS 57

LOGS, RADIO 73

LUGS, SOLDERING 57

MAGNET WIRE 78

MAGNETIC HEADPHONES.. 57
MAGNETIC SPEAKERS .... 72

MARINE RADIO SETS 45

MARINE TRANSMITTERS... 76

MASTER ANTENNAS 47

MECHANICAL AUTOMATIC

TUNING SELECTORS ... 48
MERCURY ARC RECTIFIERS 66

MERCURY SWITCHES 74

METALLIC RECTIFIERS ... 66
METERS (Laboratory type). 59

METERS (Servicing) 67

METAL CABINETS 49

MICA CONDENSERS 50

MICA (Insulation) 58

MICA TRIMMERS 54

MICROPHONES & ACCES... 61

MICROPHONE, CABLE 78

MICROVOLTERS 59

MILLIAMMETERS 67

MOTORS, GAS ENGINE ... 66
MOTORS, PHONOGRAPH ... 63

MOTORS, TUNING 48

MOULDED INSULATION ... 69
MOUNTING BRACKETS ... 57

MULTI-METERS 67

MUSICAL INSTRUMENTS,

ELECTRONIC&AMPLIFIED 60

NAME PLATES 54

NEEDLES, PHONOGRAPH .. 63

NEON INDICATORS 67

NOISE-REDUCING

ANTENNAS 47

NUT DRIVERS 76

OHMMETERS 67

ORGANS, ELECTRONIC .... 60

OSCILLATORS 59,67

OSCILLOSCOPES 59,67

OUTLETS. ANTENNA 47

OUTPUT INDICATORS 67

Product Page

PADDING CONDENSERS ... 50

PAINTS 62

PANELS (Metal) 58

PAPER CONDENSERS 50

PAPER (Insulation) 58

PERMANENT MAGNET

DYNAMIC SPEAKERS. ... 72

PHONOGRAPHS, ELECTRIC. 63

PHONOGRAPH MOTORS ... 63
PHONOGRAPH-RADIO

COMBINATIONS 45

PHOTO-ELECTRIC CELLS. . . 77

PICK-UPS, PHONOGRAPH.. 63
PLASTIC CABINETS (See

plastic molders) 69

PLASTICS (Insulation) 58

PLASTIC MOLDERS 69

PLIERS 76

PLUG-IN RESISTORS (Tubes) 64

PLUGS 57

P.M. SPEAKERS 72

POLICE RADIO RECEIVERS. 45

PORTABLE RADIO SETS ... 45

POLICE TRANSMITTERS ... 76

POWER AMPLIFIERS 70

POWER LINE FILTERS... 69
POWER PLANTS, GAS

ENGINE 49

POWER RHEOSTATS 64

POWER SWITCHES 74

POWER TRANSFORMERS... 75

POWER UNITS, RECTIFIER. 66

PRE-AMPLIFIERS 70

PRECISION RESISTORS ... 64

PROTECTIVE SWITCHES... 74

PUBLIC ADDRESS SYSTEMS 70
PUBLISHERS. RADIO

SERVICE BOOKS 80

PUNCHES 76

PUSH BUTTON TUNING

UNITS & PARTS 48

RACKS & PANELS 58

RADIO HARNESS 78

RADIO-PHONOGRAPH

COMBINATIONS 45

RECEIVING SETS & KITS.. 45

RECEIVING TUBES 77

RECORDS 63

RECORD CHANGERS 63

RECORD PLAYERS 63

RECTIFIER TUBES

(Receiving) 77

RECTIFIERS 66

RELAYS 74

REMOTE CONTROLS 48

RESISTANCE BRIDGES .59,67

RESISTANCE CORDS 78

RESISTANCE SPECIALTIES. 59

RESISTANCE WIRE 78

RESISTORS 64

R.F. COILS 50

R.F. GENERATORS 59, 67

RHEOSTATS 64

RIVETS 57

ROTARY MACHINES 66

SCREW DRIVERS 76

SCREWS 57

SELF-TAPPING SCREWS... 57
SERVICE MANUALS & BOOKS 80
SERVICING EQUIPMENT... 67

SET ANALYZERS 67

SETS. RADIO 45

SHIELDED WIRE & CABLE. 78
SHIELDS, COIL & TUBE. .. 57
SIGNAL GENERATORS. ..59. 67

SOCKETS 57

SOLDERING LUGS 57

SOLDER & FLUXES 76

SOLDERING IRONS &

STANDS 76

SOUND LEVEL METERS.. 59. 67

SOUND SYSTEMS 70

SPEAKER CORDS 78

SPEAKER PLUGS (See hard-
ware & misc. parts) ... 57

Product

Page

SPEAKER TESTERS 67

SPEAKERS & PARTS 72

SPEECH AMPLIFIERS 70

STAND-OFF INSULATORS.. 58
STANDARD SIGNAL

A.F. generators 59

R.F. generators 59

STANDS, MICROPHONE ... 61

STANDS. SPEAKER 72

STATION NAME CARDS ... 48

STORAGE BATTERIES 50

SUPPRESSORS 64

SWITCHES 74

SWITCHES, AUTOMATIC

TUNING 48

TABLE CABINETS, WOOD.. 49
TABLE CABINETS, PLASTIC 69

TELEGRAPH KEYS 74

TELEVISION SETS 45

TEMPERATURE COMPEN-
SATING CONDENSERS... 50

TERMINAL STRIPS 57

TEST EQUIPMENT 59, 67

TEST EQUIPMENT SWITCHES 74

TIME SWITCHES 74

TONE CONTROLS 64

TOOLS, RADIO SERVICING. 76
TOWERS & SUPPORTS

ANTENNA (Home) 47

TOWERS. TRANSMITTING.. 76
TRANSCRIPTION PLAYERS. 63

TRANSFORMERS 75

TRANSMISSION WIRE 78

TRANSMITTER INSULATORS 76

TRANSMITTERS 76

TRANSMITTING TUBES 77

TRIMMER CONDENSERS... 54
TRIMMER INDUCTANCE

UNITS (Push button) 48

TUBES 77

TUBE SHIELDS 57

TUBE TESTERS 67

TUBES. RECTIFIER 66

TUBING (Varnished) 58

TUNING CONDENSERS 54

TUNING MOTORS 48

TUNING WANDS 67

TURNTABLES, PHONOGRAPH 63

ULTRA-HIGH FREQ.

RECEIVERS 45

UNI-METERS 67

VACUUM SWITCHES 74

VACUUM TUBES 77

VACUUM TUBES (Books)... SO
VACUUM TUBE

VOLTMETERS 67

VARIABLE RESISTORS 64

VARNISHED CAMBRIC 58

VARNISHES 62

VELOCITY MICROPHONES.. 61
VERTICAL RADIATORS ... 76

VIBRATORS 82

VIBRATOR TESTERS 67

VOLTAGE CONTROL TUBES 77
VOLTAGE REGULATING

TRANSFORMERS 75

VOLTMETERS 67

VOLUME CONTROLS 64

WASHERS 57

WAVE ANALYZERS 59

WAVE CHANGE SWITCHES. 74

WAXES 62

WIND CHARGERS 49

WIRE 78

WIRE-WOUND RESISTORS.. 64

WIRESHIELD 78

WOBBULATORS 67

WRENCHES 76

M4RCH, 7939

•uLii mm

LOW PRICED for HIGHER
DEALER MARK-UPS!

Model 651—6 Tubes

6 tube (includes ballast)
AC-DC superhet. Automat-
ic volume control. Tunes
535-1750 Kcs. Plastic cabi-
net in Ivory or Walnut.

/ti s$o mudi etuieSL

Killlt & TELEVISION CORP.

2600 W. 50th ST. CHICAGO, ILLINOIS

The

ESPEY

Custom-built
PORTABLE

Completely self -
powered "Super"
with new low-drain
tubes. Built-in an-
tenna.

Choice of Finish — Airplane luggage, Pigskin, Cowhide or Alligator*
PLAYS ANYWHERE— EVERYWHERE

No external wires of
of any kind.

Powerful — superfine
reception.

Weighs only 12)4 lbs.

Weight balanced; is
not end-heavy.

Latest type batteries
in new unit-pack.

Highest quality PM
speaker.

The name ESPEY is more
than a guarantee of qual-
ity. It means individuality
in design and finish, mak-
ing every Espey receiver a
truly prized personal pos-
session. Espey sets are
sold to dealers at dis-
counts insuring a good re-
sale profit.

'Simulated
For complete details, write

ESPEY MANUFACTURING CO., Inc.

69 IRVING PLACE NEW YORK, N. Y.

LAMP and RADIO

When they see it, they want it!

• Here is a new profit-maker, for sale to homes, offices,
clubs, hotels — wherever a lamp or radio is wanted.
Strictly high grade product in both lamp and radio.
Superhet chassis concealed in base. Large dynamic
speaker below reflector-bowl. Exceptional tone. Self-
contained antenna. AC-DC operation. 1750-540 KC.
10KC. selectivity. Has AVC.

Write for Literature and Discounts

RADIO LAMP COMPANY of AMERICA

1313 W. Randolph Street, CHICAGO, ILL.

RADIO YEAR BOOK

ANNUAL RADIO TRADE DIRECTORY

Up-to-date, verified listings of manufacturers, products and trade names — a
complete buying guide. Index of products and advertisements on page 43.

RECEIVING SETS

Amateur AM

Auto A

Aviation AV

Battery, portable • ■ BP

Commercial COM

Farm F

Facsimile FAC

Frequency mod. • ■ ■ FM

Home H

Kits K

Marine M

Phonograph-radio ■ . PR

Police P

Police auto PA

Ultra high freq. . . . UHF

Television T

Television kits . . . TK

ABC RADIO LABORATORIES, 3334 N. New Jersey
St., Indianapolis, Ind., "ABC" — short wave auto
converters

ADMIRAL — Continental Radio & Television Corp.

AERONAUTICAL RADIO CO., Roosevelt Field, Min-
eola, N. Y.— AM, AV, M

AIR KING PRODUCTS CO., INC., 19 Hooper St.,
Brooklyn, N. Y., "Air King"— BP, F, H, PR

AIR LINE— Montgomery Ward & Co.

AIR MASTER— Automatic Radio Mfg. Co.

ALLIED RADIO CORP., 833 W. Jackson Blvd., Chi-
cago, 111., "Knight"— A, BP, F, K, PR, TK

AMERICAN TELEVISION CORP., 130 W. 56th St.,
New York, N. Y— T

AMPLEX RADIO CORP., 240 VV. 23rd St., New
York, N. Y.— H, PR

ANDREA RADIO CORP., 48-02 48th Ave., Woodside,
L. I., N. Y., "Andrea" — A, H, T, TK

ANSLEY RADIO CORP., 240 W. 23rd St., New York.
N. Y., "Ansley Dynaphone Combination" — H, PR

ARCADIA— Wells-Gardner & Co.
ARVIN— Noulitt-Sparks Industries, Inc.
AUTOMASTER— Automatic Radio Mfg. Co.
AUTOP HONE— Calvert Motors Associates
AUTOMATIC RADIO MFG. CO., 122 Brookline Ave.,

Boston, Mass., "Automatic," "Tom Thumb,"

"Auto-Rola," "Airmaster," "Automaster" — AM, A,

BP, COM, H, P, PA
AUTO-ROLA— Automatic Radio Mfg. Co.
BELL RADIO & TELEVISION, 125 E. 46th St., New

York, N. Y., "Bell"— A, F, H, T, PR
BELMONT RADIO CORP., 1257 Fullerton Ave., Chi-
cago, 111., "Belmont," "Freshman Masterpiece" —

A, BP, F, H, PR, T.
BENDIX RADIO CORP., 60 E. 25th St., Chicago,

111.— AV, M, P, PA
BENDIX RADIO MFG. CO., Wood Lake, Minn.— F, H
BRETING RADIO MFG. CO., 2117 Venice Blvd., Los

Angeles, Calif., "Breting" — AM
BROWNING LABORATORIES, INC., 750 Main St.,

Winchester, Mass., "Browning 83" — K
CALVERT MOTORS ASSOCIATES, LTD., 1028 Linden

Ave., Baltimore, Md., "Cavalier," "Autophone,"

"Mobilette"— A, H
CAVALIER — Calvert Motors Associates, Inc.
CAPEHART CORP., E. Pontiac St., Ft. Wayne, Ind.,

"Capehart"— PR

CAVALCADE RADIO MFG. CO., 271 7th St., San
Francisco, Calif., "Cavalcade" — A, H

CHAMPION RADIO LABORATORIES, 14553 Madison
Ave., Lakewood, Ohio, "Champion," "Victory,"
"Monarch," "LaSalle"— A, F, H

CINEMA ENGINEERING CO., 7605 Santa Monica
Blvd., Hollywood, Calif., "Cinema"— COM, M

CLIMAX RADIO & TELEVISION COMPANY, 513 S.
Sangamon St., Chicago, 111., "Climax" — A, F, H

COLONIAL RADIO CORP., 254 Rano St., Buffalo,
N. Y., "Colonial"— A, BP, H, PR

CONTINENTAL RADIO & TELEVISION CORP., 3800
W. Cortland St., Chicago, 111., "Admiral" — A, BP.
F, H, PR

CROSLEY RADIO CORP., 1329 Arlington St.. Cincin-
nati, Ohio, "Crosley"— A, BP, F, FAC, H

CRUSADER— Pacific Radio Corp.

DELCO RADIO DIV., General Motors Corp., Kokomn,
Ind. — A

DELCO — United Motors Service
DETROLA CORPORATION, 1501»„-' d Ave., Detroit,
Mich., "Detrola"— A, F, H, P.., P, UHF

DEWALD — Pierce Airo, Inc.

ALLEN B. DUMONT, 2 Main Ave., Passaic, N. J.,
"Dumont"— T

DUNN-HALL CO., 1477 W. Adams St., Los Angeles,
Calif., "Dunn-Hall," "Tiny Tim"— H, PR

DYNAPHONE— Ansley Radio Corp.

ELECTRICAL RESEARCH LABS., INC., 2222 Diversey
Parkway, Chicago, 111.. "Erla"— A, BP, F, H,
PR. T

ELECTROTONE— Harris Mfg. Co.

EMERSON RADIO & PHONOGRAPH CORP., Ill
Eighth Ave., New York, N. Y., "Emerson" — BP,
F, H, PR

ENSIGN— Espey Mfg. Co., Inc.

ERLA — Electrical Research Labs., Inc.

ESPEY MFG. CO., INC., 67 Irving Place, New York.
N. Y., "Ensign," "Espey"— BP, F, H, PR

FADA RADIO & ELECTRIC CO., 30-20 Thomson
Ave., Long Island City, N. Y., "Fada"— \, BP. F.
H, PR

FARNSWORTH RADIO & TELEVISION CORP., Mar-
ion, Ind. — H. T

F.E.C. — Foraco Corp.

FINCH TELECOMMUNICATIONS LABS., 37 W. 57th
St., New York, N. Y.— FAC

FISCHER-SMITH, 162 State St., W. Englewood, N.J.
"Fischer-Smith" — A

FORACO CORP., 2111 Woodward Ave., Detroit. Mich..
"F.E.C."— A, F, H, PR, BP

FRANKLIN— Mission Bell RaSio Co., Inc.

FRESHMAN MASTERPIECE— Belmont Radio Corp.

GALVIN MFG. CORP., 4545 Augusta Blvd., Chicago,
111., "Motorola"— A, BP, F, H, PA, PR, T

GAROD RADIO CORP., 115 Fourth Ave., New York,

N. Y., "Garod"— F, H. PR, TK .
GENERAL — General Television & Radio Corp.
GENERAL ELECTRIC CO., 1285 Boston Ave., Bridge-
port, Conn., "General Electric" — BP, COM, F,

FM, H, PR, T
GENERAL ENGINEERS, 2241 Garrett Rd., Upper

Darby, Pa., "General Engineers" — AM, BP. M, P.

PA
GENERAL TELEVISION & RADIO CORP., 257 W.

17th St., New York. N. Y., "General"— AM,

COM, H
GILFILLAN BROS., INC., 1815 Venice Blvd., Los

Angeles, Calif., "Gilflllan"— F, H, PR
GREBE MFG. CO.,- INC., 119 Fourth Ave., New York,

N. Y., "Grebe"— BP, F, H, PR
HAIGIS LABORATORIES, INC., Maple Shade. N. J

— P, PA, UHF
HALLICRAFTERS, INC., 2611 S. Indiana St.. Chi

cago. 111., "Skyrlder" — AM
HALSON RADIO & TELEVISION, INC., Meriden,

Conn., "Halson"— BP, H, PR

HAMMARLUND MFG. CO., 424 W. 33rd St., New
York, N. Y., "Super-Pro," "Pro" — AM, COM

HARRIS MFG. CO., 2422 W. 7th St., Los Angeles.
Calif., "Electrotone" — PR

HEINTZ & KAUFMAN, South San Francisco, Calif.—

COM
HETRO ELECTRICAL INDUSTRIES, INC., 4611

Ravenswood Ave., Chicago, HI, "Hetro" — A, F,

H, PR

HERBERT H. HORN, 1201 S. Olive St., Los Angeles,
Calif., "Tiffany Tone" — A, H, PR

HOWARD RADIO CO., 1731-35 Belmont Ave.. Chi-
cago, 111., "Howard"— A, AM, BP, F, H, PR

INTERNATIONAL INDUSTRIES, INC., Ann Arbor,
Mich.— H

JEFFERSON-TRAVIS RADIO MFG. CORP., 198'Mil-
burn Ave.. Baldwin, N. Y., "Jefferson-Travis" — M,
P, PA

KAAR ENGINEERING CO., 619 Emerson St., Palo
Alto, Calif., "Kaar"— AM, M

KINGSTON RADIO CO., INC., Kokomo, Ind., "King-
ston"— H

KNIGHT— AUied Radio Corp.

LAFAYETTE— Wholesale Radio Service Co., Inc.

LASALLE — Champion Radio Laboratories

LAUREHK RADIO MFG. CO., E. Michigan St..
Adrian, Mich., "Laurelik," "Musique" — BP. F, H

LEAR DEVELOPMENT CO., 121 W. 17th St., New
York, N. Y.— AV, COM

LINCOLN RADIO & TELEVISION CORP., 841 Jack-
son Blvd., Chicago. 111.. "Lincoln" — A. BP, F.
H, PR

LUXOR RADIO MFG. CO., 521 W. 23rd St., New

York, N. Y., "Luxor"— H
MAJESTIC RADIO & TELEVISION CO., 2600 W.

50th St., Chicago. 111., "Majestic"— BP, F. H,

PR, T.
MARCONIPHONE, INC., 679 Madison Ave., New York,

N. Y., "Marconiphone" — II, PR
MARINE RADIO CORP., 91 Third Ave., New York.

N. -Y.. "Marine"— AM, AV, COM, M

MEISSNER MFG. CO.. 7lh & Belmont, Mt. Carmel.
111.— AM, K

MIDWEST RADIO CORP.. 909 Broadway, Cincinnati.

Ohio, "Midwest"— F, II. I'll, BP
MISSION BELL RADIO CO., INC., 833 Venice Blvd..

Los Angeles, Calif.. "Tru-Dial/' "Franklin" — A,

BP, H, PR, P, PA
MOBILETTE — Calvert Motors Associates, Ltd.
MONARCH — Champion Radio Laboratories
MOTOROLA— Calvin Mfg. Corp.
MUSIQUE— Laurehk Radio Mfg. Co.

NATIONAL COMPANY, 61 Sherman St., Maiden.
Mass., "National"— AM, COM. UHF

NOBLITT-SPARKS INDUSTRIES, INC., Columbus.

Ind., "Arvin"— A. F. H, PR
PACIFIC RADIO CORP., 5016 S. Main St., Los

Angeles, Calif., "Pacific Crusader" — H, PR
PACKARD BELL RADIO CO., 1320 S. Grand Blvd..

Los Angeles, Calif., "Packard Bell" — A, H
PATHE RADIO & TELEVISION CORP.,' 2241 S. In-
diana Ave., Chicago, III. — H
PATTERSON RADIO CO., 1320 S Los Angeles St.,

Los Angeles, Calif.
PEERLESS RADIO MFG. CO., Division St. & Broad-
way, Albany. N. Y.. "Peerless"— AM. A, BP. F. H
PHILCO RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Philco"— A, BP, F, H,

P, PA, T
PHILHARMONIC RADIO CO., 54 W. 21st St., New

York, N. Y.— H, PR
PHILMORE MFG. CO., 113 University Place, New

York, N. Y., "Philmore"— BP, H, K
PIERCE AIRO, INC., 440 Lafayette St., New York,

N. Y., "De Wald"— A, BP, H, PR
PIERSON-DELANCE, INC., 2345 W. Washington

Blvd., Los Angeles, Calif.— AM, COM, H, M, P
PILGRIM ELECTRIC CORP., 138 5th Ave., New York,

N. Y., "Pilgrim"— A, BP, F. H

MARCH, 1939

When writing advertisers, please say you saw it in the 1939-40 RADIO YEAR BOOK

PLAY SAFE!

Before you sell or recommend an all-wave
doublet antenna system, using couplers for
a number of outlets from a single antenna
make sure it is a "MULTICOUPLER"
System, licensed under the patents of Amy,
Aceves & King, Inc.

When you sell a Master Antenna System,
be sure it's the "Multicoupler" System li-
censed under patents of AAK.

All -Wave
Doublet
Multicoupler ' '

Antenna Systems

. . . designed especially for APARTMENT
HOUSES, RESIDENCES, HOTELS and
INSTITUTIONS of all kinds. The ONLY
system that will adequately provide stand-
ard Broadcast and Short Wave reception
for an average of 20 radio sets on one
aerial, with Noise Reduction.

Our engineering service is furnished with
all installations.

Write for complete information

AMY, ACEVES & KING, inc

Consulting Engineers . Specialists in Radio

11 W. 42ND STREET NEW YORK

AERIALS

ARE

EASY TO SELL
EASY TO INSTALL

Write

for new catalog oi Ward's
complete line oi low-priced
manufacturers - approved
aerials for car and home-
also get on mailing list for
free magazine packed with
selling and service tips.

PRODUCTS
CORP

WARD BLDG.

CLEVELAND, 0.

RECEIVING SETS-Confd

PILOT RADIO CORP., 37-06 36th St., Long Island
City, N. Y., "Pilot"— BP, F, H, PR, AM, COM

P0RT0MATIC CORP., 1013 Madison Ave., New York,

N. Y., "Portomatie" — PR
PRESTO RECORDING CORP., 139 W. 19th St., New

York, N. Y., "Presto"— COM
PRO— Hammarlund Mfg. Co.

RADIOBAR CO. OF AMERICA, Trenton, N. J.— PR
RADIO ENGINEERING & MFG. CO., 26 Journal Sq.,

Jersey City, N. J.— UHF
RADIO LABORATORIES, INC., 2701 California Ave.,

SGiittlc Wash M

RADIO LAMP CO.', 1313 W. Randolf St., Chicago,

111. — H, lamp style
RADIO MFG. ENGINEERS, INC., 306 1st Ave.,

Peoria, 111., "RME"— AM
RADIOMARINE CORP. OF AMERICA, 75 Varick St.,

New York, N. Y.— COM, M
RADIO NAVIGATIONAL INST. CORP., 500 Fifth

Ave., New York, N. Y.— AV
RADIO PRODUCTS CORP., 3800 W. Cortland, Chi-
cago, 111. — A, BP, H, PR
RA0I0 TRANCEIVER LABS., 86-27 115th St., Rich-
mond Hill, N. Y., "Radio Tranceiver Labs." — AM,

BP, UHF
RAD0LEK CO., 601 W. Randolph St., Chicago, 111.,

•Radolek"— A, AM, BP, F, H, PR
RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,

"RCA-Victor"— A, AM, BP, FAC, H, M, P, PR, T
REGAL AMPLIFIER MFG. CO., 14 W. 17th St., New

York, N. Y.— F, H, BP, PR
REMLER CO., LTD., 2101 Bryant St., San Francisco,

Calif., "Remler"— F, H
J. & L. SARA CO., 123 Liberty St., New York, N.Y.,

"Sara" — H, n
E. M. SARGENT- CO., 212 9th St., Oakland. Calif.,

"Sargent" — AM, COM
SCHIRESON BROS., 226 N. Main St., Los Angeles,

Calif.— A, H, PR
E. H. SCOTT LABORATORIES, INC., 4450 Ravens-
wood Ave.. Chicago, 111., "Scott" — H, PR, F
SEARS. ROEBUCK & CO., 925 So. Homan St., Chi-
cago, 111., "Silvertone"— AM, A, BP, F, H, PR
SENTINEL RADIO CORP., 2222 Diversey Pkwy., Chi-
cago, 111., "Sentinel" — A, BP, F, H. PR, T
SETCHELL-CARLSON, INC., 2233 University Ave.,

St. Paul, Minn., "Setchell-Carlson" — BP, F, H,

M. PA
SILVERTONE— Sears, Roebuck & Co.
SIMPLEX RADIO CO., Sandusky. Ohio, "Simplex"—

F, H
SKY CHIEF RADIO CORP., 345 E. 37th St., New

York, N. Y., "Sky Chief"— H. PR
SKYRIDER— Hallicrafters, Inc.
S0N0RA ELECTRIC PHONOGRAPH CO., INC., 132

West 22nd St.. New York, N. Y., "Sonora" — PR
S0N0RA RADIO & TELEVISION CORP., 2626 W.

Washington Blvd.. Chicago. III., "Sonora" — A. BP,

F, H, PR, T
SPARKS-WITHINGTON CO., E. Ganson Ave., Jackson,

Mich., ■■Sparton"— A, F, H, PR
SPART0N — Sparks-Withington Co.
STEWART-WARNER CORP., 1826 Diversey Pkwy..

Chicago, III., "Stewart-Warner — A, BP, F, H.

PR, T
STR0MBERG-CARLSON TELEPHONE MFG. CO., 100

Carlson Rd., Rochester, N. Y., "Stromberg-Carlson"

— F, H, PR
SUPER-PRO— Hammarlund Mfg. Co.

L'TATRO MFG. CO., 417 W. Water St., Decorah.
la.— BP, F

TINY TIM— Dunn-Hall Co.

TOM THUMB— Automatic Radio Mfg. Co.

TRAV-LER RADIO & TELEVISION CORP., 1036 W.
Van Buren St., Chicago, III., "Trav-Ler" — A, BP,
F, H, PR

TREB0R RADIO CO., Pasadena. Calif.. "Trebor"—
A, H

TROUBADOUR— Ultramar Mfg. Corp.

TROY RADIO MFG. CO.. 1144 S. Olive St., Los
Angeles, Calif., "Troy"— A, BP, F. H, PR

TRU-DIAL — Mission Bell Radio Co., Inc.

TRUETONE— Western Auto Supply Co.

ULTRAMAR MFG. CORP., 303 W. Monroe St., Chi-
cago, 111., "Ultramar," "Troubadour" — A, BP, F,
H, KT, PR

UNITED AMERICAN BOSCH CORP.. 3664 Main St.,
Springfield, Mass.— A. F, H, P

UNITED MOTORS SERVICE, 3044 W. Grand Blvd.,
Detroit, Mich., "Delco"— A, F, H

UNIVERSAL BATTERY CO., 3410 So. LaSalle St,

Chicago, 111., "Universal"— A, F, H
VICTROLA— RCA Mfg. Co.

JVEW

TRIM-MAST

AERIALS

Trim mast antennas
are made in over 100
styles and types suit-
able to all kinds of
aerial installations
from Auto Radii
Home Radio.

RUST PROOF

NON DIRECTIONAL

Above illustrates our House-
top Antenna Model 3000

CHECK SOME OF THESE FEATURES
of the Extensive AVNET Aerial Line

• New Design improves per-
formance

• Double construction, long lite

• Modern, streamlined appear-
ance. PRICED RIGHT

A few territories still left for wide
awake jobbers and dealers.
Write today for our exclusive fran-
chise. Free catalog upon request.

The CHARLES AVNET CO.

Manufacturers of Home and Auto Radio Aerials
156 CHAMBERS ST. NEW YORK

RADIART

VIBRATORS now

GUARANTEED

YEAR

RBDIBRT

FIRST in Quality
FIRST in Design

PROTECTED PROFITS

RADIO YEAR BOOK

VICTORY — Champion Radio Laboratories

MONTGOMERY WARD & CO., W. Chicago & N. Larr
Sts., 111., "Air Line"— AM, A, AV, BP, COM, F.
H, M, PR

WARWICK MFG. CO., 1700 W. Washington Blvd..
Chicago, 111., "Warwick"— A, BP, F, H

WELLS-GARDNER & CO., 2701 N. Kildare Ave., Chi-
cago, 111., "Arcadia"— A, BP, F, H

WESTERN AUTO SUPPLY CO., 2107 Grand St., Kan-
sas City, Mo., "Truetone" — A, H, F

WESTERN ELECTRIC CO., 195 Broadway, New York,
N. Y., "Western Electric" — AV, M, P, PA

WESTINGHOUSE ELEC. & MFG. CO., Baltimore,
Md — P, PA

WESTINGHOUSE ELECTRIC SUPPLY CO., 150 Var-
ick St., N. Y., "Westinghouse" — BP, F, H

WHOLESALE RADIO SERVICE CO., INC., 100 Sixth
Ave., New York, N. Y., "Lafayette"— A, AM, BP,
F, H. PR

Charlotte, Mich., "Wilcox-

WILCOX-GAY CORP.,
Gay"— F, fl

ZENITH RADIO CORP., 6001 Dickens Ave., Chicago,
111., "Zenith"— BP, F, H

ZEPHYR RADIO CO., 13139 Hamilton Ave., Detroit,
Mich., "Zephyr"— A, F, H, PR

ANTENNAS & ACCESSORIES

All-wave (home) AW

Auto A

Ground clamps G

Insulators I

Kits . . . K

Lightning arresters L

Loop antennas LA

Master systems MS

Noise-reducing broadcast N

Outlets O

Towers & supports (home) . . . . .T

ABC RADIO LABORATORIES, 3334 N. New Jersey

St., Indianapolis, Ind., "ABC" — A
AIR LINE— Montgomery Ward & Co.
AIR QUEEN— Knox Porcelain Corp.
ALDEN PRODUCTS CO., 715 Center St., Brockton,

Mass., "Fade-out" — AW

ALLIED RADIO CORP., 833 W. Jackson Blvd., Chi-
cago, 111., "Knight"— AW, A, K, LA, MS

ALPHA WIRE CORP., 50 Howard St., New York,
N. Y.— AW, G, I, K, I

AMERICAN COMMUNICATIONS CORP., 1650 Broad-
way, New York, N. Y., "American" — MS, 0

AMERICAN INJECTOR CO., Detroit, Mich., "Hi-Fi"
—A

AMERICAN PHENOLIC CORP., 1250 W. Van Buien
St., Chicago, 111., "Amphenol" — 0

AMERICAN RADIO HARDWARE CO., 476 Broadway,
New York, N. Y., "Arhco"— A

AMPHENOL — American Phenolic Corp.

AMY, ACEVES & KING, INC., 11 W. 42nd St., New
York, N. Y., "Multicoupler"— MS

ARHCO — American Radio Hardware Co., Inc.

ARVIN— Noblitt-Sparks Industries

CHARLES AVNET CO., 156 Chambers St., New York,
N. Y— A

BELDEN MFG. CO., 4647 W. Van Buren St., Chicago,
TIL, "Belden"— AW, G, I, K, L

BIRCO— Birnbach Radio Co.

BIRNBACH RADIO CO., 145 Hudson St., New York,
N. Y., "Birco"— A, AW, K, MS, I

L. S. BRACH MFG. CORP., 55 Dickerson St., New-
ark, N. J., "Puratone"— AW, A, G, I, K, L, MS.
N, 0, T

BUD RADIO, INC., 5205 Cedar Ave., Cleveland, Ohio,
"Bud"— G, I, K, L, 0

CLAMPIPE— Mueller Electric Co.

CONSOLIDATED WIRE & ASSOC. CORP., Peoria &
Harrison Sts., Chicago, 111.— A, AW, G, I, K, L, MS

CONTINENTAL WIRE CO., 110 Lafayette St.. New
York, N. Y., "Continental"— AW, A. G, I, K, I,
MS, N, 0

COPPERWALD STEEL CO., 9th St. & Allegheny Ave.,
Gkssport, Pa. — G

CORNING GLASS WORKS, Walnut St., Coming.
N. Y., "Pyrex"— I

CORNISH WIRE CO., INC., 30 Church St.. New York,

N. Y., "Corwico"— AW, K
CO RWI CO— Cornish Wire Co., Inc.
DELCO RADIO DIV., General Motors Corp., Kokoino,

Ind.— A
DELCO — United Motors Service
TOBE DEUTSCHMANN CORP., Canton, Mass., "Jni-

terizer" — AW, K
EFFARSEE— Fishwick Radio Co.
ELECTRONIC PRODUCTS SPECIALTIES CO., 1623

S. Hill St., Los Angeles, Calif.— A
FADE-OUT— Alden Products Co.

FEDERAL SALES CO., 26 S. JefTerson St., Chicago,
111.— G

FILTERIZER — Tobe Deutschmann Corp.

FISHWICK RADIO CO., 139 W. 4th St., Cincinnati,
Ohio, "EfTarsee"— A, AW

M. M. FLERON & SONS, 113 N. Broad St., Trenton,
N. J., "Fleron"— A, AW, K, I

FOWLER MFG. CO., 9 Rutger St., St. Louis, Mo.— K

FULTON RADIO CORP., 100 6th Ave., New York,
N. Y.— A

GALVIN MFG. CORP., 4545 Augusta Blvd., Chicago,
111., "Motorola Booster" — AW, A

GENERAL ELECTRIC CO., 1285 Boston Ave., Bridge-
port, Conn., "GE," "V-Doublet"— AW, K, N

G.E. — General Electric Co.

GENERAL WINDING CO., 254 W. 31st St., New
York, N. Y., "Gen-Win''— AW, K, MS, N

GEN-WIN— General Winding Co.

D. H. HARRELL, 7731 Essex Ave., Chicago, HI.— N

HI-FI — American Injector Co.

HUNTER PRESSED STEEL CO., Lansdale, Pa.— A

ICA — Insuline Corp. of America

INSULINE CORP. OF AMERICA, 25 Park Place, New
York, N. Y., "ICA"— AW, A, • , I. K. L, MS, 0

ISOLANTITE, INC., 233 Broadway, New York, N. Y.,
"IsoLantite" — I

J. F. D. MFG. CO., 4111 Ft. Hamilton Pkwy., Brook-
lyn, N. Y., "J. F. D."— AW, A, K

KNIGHT— Allied Radio Corp.

KNOX PORCELAIN CORP., Knoxrille. Tenn., "Air

Queen" — AW, I
LAFAYETTE— Wholesale Radio Service Co., Inc.

LITTLEFUSE LABORATORIES, 4238 Lincoln Ave.,
Chicago, DL— ACC

P. R. MALLORY & CO., 3029 E. Washington St.,

Indianapolis, Ind., "Yaxley" — 0
MARS MFG. CO., 1512-14 56th St., Chicago. 111..

"Mars"— AW, A

MORRIS REGISTER CO., Council Bluffs, Iowa— A, G

MOTOROLA BOOSTER— Calvin Mfg. Corp.

MUELLER ELECTRIC CO., 1573 E. 31st St.. Cleve-
land, Ohio, "Clampipe" — ACC, G

MULTICOUPLER— Amy, Aceves t King

NOBLITT-SPARKS INDUSTRIES, INC., Columbus,

Ind., "Arvin"— AW, A, K
NORWEST RADIO LABS., Blaine Ave. & Hill St.,

Shelby, Mont., "Streamline," "Vertenna" — A, AW

PHILCO RADIO & TELEVISION CORP.. Tioga & C
Sts.. Philadelphia, Pa., "Philco" — AW, A, K. N,
ACC

PHILSON MFG. CO., 156 Chambers St., New York,
N. Y.— A

PIONEER SPECIALTY CO., 521 St. Jean St., De-
troit, Mich.— A

PREMAX PRODUCTS DIV., Chisholm-Ryder Co.. Ni-
agara Falls, N. Y., "Premax" — AW. K. T. A,
Ground Rods

PURATONE— L. S. Brach Mfg. Corp.

PYREX— Corning Glass Works

QUAM-NICHOLS CO., 33rd PL & Cottage Grove Ave.,

Chicago, 111., "Quam"— A, AW, K, L
RADIART CORP., Shaw Ave. at 133rd St., Cleveland.

Ohio— A
RADOLEK CO., 601 W. Randolph St., Chicago, III..

"Radolek"— A, AW, K
RCA MFG. CO., Front & Cooper Sts., Camden, N. J..

"RCA"— A, AW, K, MS

RENSON PRODUCTS CO., Conshohocken, Pa.— A
SACKHEIM BROS. CORP., 215-219 W. Illinois St.,

Chicago, 111.— G
SNYDER, INC., Noble & Darien Sts., Philadelphia,

Pa., "Snyder" — A, G. I, K

SPARTON— Sparks-Withington Co.
STANDARD TRANSFORMER CORP., 1500 N. Hal-
stead St., Chicago, 111. — LA
STREAMLINE— Norwest Radio Labs

STROMBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Rd., Rochester, N. Y., "Stromberg-Carlson"
—AW

SUPERIOR TUBE CO., Norristown, Pa.— A

TACO — Technical Appliance Corp.

o o.

* * * *

(/>

MARCH, 7939

ANTENNAS

& ACCESSORIES -cont'd

TECHNICAL APPLIANCE CORP., 17 E. 16th St.,
New York, N. Y., "Taco"— AW, K, MS

TOPSTREEM, INC., 1811 S. Lyndale Ave., Minne
apoUs, Minn., "Topstreem" — A

UNITED MOTORS SERVICE, 3044 W. Grand Blvd.,
Detroit, Mich., "Delco"— A, AW, K

V-DOUBLET— General Electric Co.

VERTENNA— Norwest Radio Labs.

BETTER satisfaction — easier
selling — with Crowe Inter-
changeable Custom-Built Con-
trols and Panel Kits — a
steadily growing line — more
complete than ever! They're
different. They EXACTLY MATCH official styling.

Thousands of auto radios in use, Crowe-equipped,
need only new Crowe Kits to fit 1939 cars. Others
need Controls and Kits for new cars. A highly
profitable, growing market. Cash-in on it!

Ask for Bulletin 230

CROWE NAME PLATE & MFG. CO.

1771 GRACE ST., CHICAGO, ILL.

• FADA • — — ^ MARVIN*

• SPARTON • HORN- DELCO- KARADI 0 •
•PHILCO-EMERSON- FIRESTONE-
•TRAVLER* STEWART-WARNER-
•PACKARD -BELL* TIFFANY TONE-
•ADMIRAL* MISSION- BELL* TROY*

VICTORY MFG. CO., INC., 2021 S. Michigan Ave.,

Chicago, 111., "Victory" — A
MONTGOMERY WARD & CO., W. Chicago & N. Larr

Sts., Chicago, 111., "Airline"— AW, A, G, I, K,

L, N, 0, T
THE WARD PRODUCTS CORP., 1523 E. 45th St.,

Cleveland, Ohio, "Ward" — AW, A, K
WHOLESALE RADIO SERVICE CO., INC., 100 Sixth

Ave., New York, N. Y., "Lafayette"— A, ACC, AW.

K, MS
WINCH ARGER CORP., Sioux City, Iowa— T
YAXLEY— P. R. Mallory & Co.

AUTOMATIC TUNING UNITS & PARTS

Face plates (See Escutcheons)

Inductance trimmer units IT

Mechanical automatic selectors. .. .MS

Push button knobs K

Push button motor

operated units (complete) PM

Push-button trimmer units comp....PT

Remote controls R

Station name cards SC

Switches . . S

Temperature compens. cond TC

Trimmer condenser units CU

Tuning motors M

ALADDIN RADIO INDUSTRIES, INC., 468 W. Su-
perior St., Chicago, 111. — IT

ALDEN PRODUCTS CO., 715 Center St., Brockton,
Mass. — K

ALLIANCE MFG. CO., Alliance, Ohio. "Alliance"— M

AMERICAN EMBLEM CO., INC., P. 0. Box 116-J

Utica, N. Y.— MS. SC
AUBURN BUTTON WORKS, Auburn, N. Y.— K

AUTOMATIC DEVICES MANUFACTURERS, 4243

West Ogden Ave. Chicago, HI.— PT, S, CTJ
4UT0MATIC WINDING CO., INC., 900 Passaic Ave..

East Newark, N. J.— IT, PT, TC, CU
CENTRALAB, 900 E. Keefe Ave., Milwaukee, Wis.,

"Centralab" — S
CROWE NAME PLATE & MANUFACTURING CO..

3701 Ravenswood Ave., Chicago, 111., "Crowe" —

MS, PM, R, SC
HARRY DAVIES CO., 1428 No. Wells St., Chicago,

ILL— K
DE-JUR-AMSCO CORP., Shelton, Conn.— MS

DELCO RADIO DIV., General Motors Corp., Kokomn,
Ind.— PM, R

ERIE RESISTOR CORP., 644 W. 12th St., Erie, Pa.,
"Erie,"— K, TC, CU

A. W. FRANKLIN MFG. CORP., 175 Varick St., New
York, N. Y., "Franklin"— MS, S, K

GEMLOID CORP., 425 4th Ave., New York, N. Y.,
"Gemloid"— SC

GENERAL INSTRUMENT CORP., 829 Newark Ave.,
Elizabeth, N. J.— MS

GENERAL MFG. CO., 8066 S. Chicago Ave., Chicago,
HI.— IT

DELCO APPLIANCE DIV., General Motors Sales Corp.,
391 Lyell Ave., Rochester, N. Y. — M

GENERAL WINDING CO., 254 W. 31st St.., New
York/ N. Y., "Gen-Win"— IT, PM, PT, CU, M

GEN-WIN— General Winding Co.

CARL GORR PRINTING CO., INC., 2615 N. Ashland
Ave., Chicago, 111. — SC

GUARDIAN ELECTRIC CO., 1625 Walnut St., Chi-
cago, 111. — R

E. I. GUTHMAN & CO., INC., 400 S. Peoria St.,
Chicago, ni., "Guthman"— IT, PT, CU

HUSHTONE— Radio Reel Co.

HUNTER PRESSED STEEL CO., Lansdale, Pa.— MS.
PM

ICA — Insuline Corp. of America

INSULINE CORP. OF AMERICA, 25 Park Place, New
York, N. Y., "ICA"— R, S, CU

KURZ-KASCH CO., Dayton, Ohio— K

P. R. MALLORY & CO., 3029 E. Washington St.,
Indianapolis, Ind., "Yaxley," "Mallory" — CU, K, S

MEISSNER MFG. CO., 7th & Belmont, Mt. Carmel,
111., "Meissner"— CU, IT, PT, R, S

MUTER CO., 1255 S. Michigan Ave., Chicago, 111.,
"Muter"— MS, S, TC

NORDENDALE MFG. CO.. 2100 Fulton St., Chicago,
III.— S

OAK MFG. CO., 711 W. Lake St., Chicago, 111.,
"Oak"— MS, S

PACIFIC RADIO CORP., 5016 S. Main St., Los An-
geles, Calif. — S

PATHE RADIO & TELEVISION CORP., 2241 S.
Indiana Ave., Chicago, HI. — R

RADIO REEL CO., Tacoma, Wash., "Hushtone" — R

SETCHELL-CARLSON MFG. CO., INC., 2233 Univer-
sity St., St. Paul, Minn., "Tunit"— R

F. W. STEWART MFG. CORP., 340 W. Huron St.,
Chicago, 111., "Stewart" — MS, K, PM, R, SC, 8

TELERADIO ENGINEERING CORP., 484 Broome St.,
New York, N. Y., "Teleradio"— IT, PT, TC, CU

TREBOR RADIO CO., Pasadena, Calif., "Trebor"— PM

TUN IT— Setchell-Carlson Mfg. Co., Inc.

UNIVERSAL MOLDING CO., 16th & Vermont 6ts..
San Francisco, Calif. — K

UTAH RADIO PRODUCTS CO., 820 Orleans St.,
Chicago, 111., "Utah" — M, S

YAXLEY— P. R. Mallory & Co.

Presenting . . .

DUAL REMOTE

Consisting of

DUAL, CONTROLS — Back seat con-
trol for use with regular dashboard
control. Includes dual control, coupler
unit and flexible shaft.

BACK SEAT CONTROLS — Single con-
trol beside rear seat of car. Either
flush, surface or recessed mounting.
Includes back seat control and flexi-
ble shaft.

FRONT CONTROLS — Combined un-
der-dash-surface mounting on in-
strument panel. Includes front con-
trol and flexible shaft. -

ACCESSORIES — Interchangeable
gears; fittings and parts.

DUCOX Controls are truly Universal.
Single unit, pre-assembled. Inter-
changeable gears for ALL CARS and
ALL SETS. Easy to obtain correct
gear ratio. Large inventory is not
necessary.

CONTROLS for AUTOS...
AIRCRAFT . . . SEACRAFT

Increase Your Sales and Profits

DUCOX Dual Remote Controls give
you a new market with new possi-
bilities of sales and profits.
With one Front Control unit and
interchangeable gears, you can
easily handle ANY auto radio re-
installation job, with minimum in-
stallation time and maximum profit.
DUCON Back Seat Controls are the
only controls on the market suitable
for mounting in the upholstery be-
side the back seat. Flush, recessed
or surface mounting available.
DUCON Dual Control assembly can
be installed without disturbing the
regular dashboard control. Both

dials read the same when either one
is turned.

DISPLAY the Dual Control in your
salesroom and natch your sales go
up! Write or wire for full details.

DUAL REMOTE CONTROL CO. • 505 GUARANTY BUILDING • DETROIT, MICHIGAN

DUCON

PRODUCTS

RADIO YEAR BOOK

AUTO RADIO CONTROLS

Cable replacement tools.... T
Control units (complete) . CU

Control heads CH

Fittings F

Flexible shafts FS

ALDEN PRODUCTS CO., 715 Center St., Brockton.

Mass., "Alden" — F
ARVIN — Noblitt-Sparks Industries
CLOVER PARTS CO., 551 5th Ave., New York. N. Y.,

"Clover" — T, F, FS
CONSOLIDATED WIRE & ASSOC. CORPS., Peoria &

Harrison Sts., Chicago, IIL— CH, CU
CROWE NAME PLATE & MFG. CO., 3701 Ravens-
wood Ave., Chicago, 111., "Crowe" — CU, CH, F,

FS, T
HARRY DAVIES CO., 1428 No. Wells St., Chicago,

HI.— CH
DELCO RADIO DIV., General Motors Corp., Kokomo,

Ind., "Delco"— CU, CH, F, FS
DELCO — United Motors Service
DUAL REMOTE CONTROL CO., 7228 Warwick St.,

Detroit, Mich., "Dual"— CU, CH, F
GEMLOID CORP., 425 4th Ave., New York, N. Y.

"Gemloid" — F
ICA — Insuline Corp. of America
INSULINE CORP. OF AMERICA, 25 Park Place,

New York, N. Y., "ICA"— FS
J. F. D. MFG. CO., 4111 Ft. Hamilton Pkwy..

Brooklyn, N. Y., "JFD"— T, FS
NOBLITT-SPARKS INDUSTRIES, INC., Columbus,

Ind., "Anin"— CU, FS
PHILCO RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Philco"— CU, CH, FS
STAR MACHINE MANUFACTURERS, INC., Hunts

Point & E. Bay Aves., Bronx, N. Y., "Star"—

CU, CH, F, FS
F. W. STEWART MFG. CORP., 340 W. Huron St.,

Chicago, IIL, "Stewart"— T, CU, CH, F, FS
UNITED MOTORS SERVICE, 3044 W. Grand Blvd.,

Detroit, Mich., "Delco"— CU
UNIVERSAL CONTROLS, INC., Division of A. W.

Franklin Mfg. Co., 2107 40th Ave., Long Island

City, L. I., N. Y— CU, CH, F, FS
S. S. WHITE DENTAL MFG. CO., Industrial Div.,

10 E. 40th St., New York, N. Y., "S.S. White"

— FS

BATTERY CHARGERS

Gas engine G

Power line (home) PH

Power line (service station) ... .PS
Wind driven W

AMERICAN TELEVISION & RADIO CORP., 300 E.

4th St., St. Paul, Minn., "ATR"— PH
ATR — American Television & Radio Corp.
AUTOMATIC ELECTRICAL DEVICES CO., 324 E.

3rd St., Cincinnati, Ohio— PH
B-L ELECTRIC MFG. CO., 19th & Washington Aves..

St. Louis, Mo.— PH
BREEZ-ELECTRIC, 440 N. Oakley Blvd.. Chicago,

IIL— W
BRIGGS & STRATTON CORP., 2711 No. 13th St.,

Milwaukee, Wis., "Briggs & Stratton" — G
CONTINENTAL MOTORS CORP., 12801 E. Jefferson.

Detroit, Mich., "Tiny Tim" — G
DELCO — United Motors Service
EICOR, INC., 515 S. Laflin St., Chicago, HI., "Util-

ite" — G, W
ELECTRICAL PRODUCTS CO., 6537 Russell St.,

Detroit, Mich.— PS
ELECTRIC STORAGE BATTERY CO., Allegheny Ave.

& 19th St., Philadelphia, Pa., "Exide"— PS
EXIDE— Electric Storage Battery Co.
F.E.C. — Foraco Corp.
FORACO CORP., 2111 Woodward Ave., Detroit, Mich.,

"F.E.C."— G. W
GEN-E-ROTOR, 614 Grand Ave., Des Moines, Iowa,

"Gen-E-Rotor," "Queen Bee," "Old Faithful" — W

HETRO ELECTRICAL INDUSTRIES, INC., 4C11 Ra-
venswood Ave., Chicago, 111. — G, PH, W

HY-TOWER— Parris-Dunn Corp.

IRON HORSE GENERATOR— Johnson Motors

JOHNSON MOTORS, Waukegan, 111., "Iron Horse
Generator" — G

KATO ENGINEERING CO., 530 No. Front St., Man-

kato, Minn., "Kato" — G, W
P. R. MALLORY & CO., 3029 E. Washington St.,

Indianapolis, Ind., "Mallory" — PH
MIDWEST MFG. & DISTRIBUTING CO.. S. 13th &

Kentucky Ave., Sheboygan, Wis. — G
MONTGOMERY WARD & CO., W. Chicago & N. Larr

St., Chicago, HI. — G, PH, PS, W
OLD FAITHFUL— Gen-E-Rotor

D. W. ONAN & SONS, 591 Royalston Ave., Minne-
apolis, Minn., "Onan" — G
PARRIS-DUNN CORP., 115 So. 15th St., Clarinda,

Iowa, "Hy-Tower" — W
PINCOR — Pioneer Gen-e-motor Corp.
PIONEER GEN-E-MOTOR CORP., 466 W. Superior

St., Chicago, 111., "Pincor" — G, W
QUEEN BEE— Gen-E-Rotor
RAYTHEON MFG. CO., 190 Willow St., Waltham.

Mass., "Recticharger" — PS
RECTI CHARGER— Raytheon Mfg. Co.
RURALITE ENGINEERING CO., Sioux City, Iowa— W
SENTINEL RADIO CORP.. 2222 Diversey Pkwy.,

Chicago, HI. — G, W

SKAGGS TRANSFORMER CO., 5894 Broadway, Los
Angeles, Calif. — PH, PS

STANDARD TRANSFORMER CORP., 1500 N. Hal-
stead St., Chicago, HI. — PS

STROMBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Rd., Rochester, N. Y. — PH

TECHNICAL PRODUCTS INTERNATIONAL, 135 Lib-
erty St., New York, N. Y., "Technipower" — G, W

TECH N I POWER — Technical Products International

TINY TIM — Continental Motors Corp.

UNITED MOTORS SERVICE, 3044 W. Grand Blvd.,
Detroit, Mich., "Delco"— PH, W

UTILITE— Eicor, Inc.

WEDGE MFG. CO., 2338 S. Michigan Ave., Chicago,
HI., "Wedge-Power" — G

WINCHARGER CORPORATION, 2700 Hawkeye Drive,
Sioux City, Iowa, "Wincharger"— W

WIND-IMPELLER ELECTRIC WORKS, Ellsworth.
Iowa — W

CABINETS

Console (wood) C

Metal M

Plastic (see elastic molders)
Table (wood) T

ADLER MFG. CO., 29th & Chestnut Sts., Louisville
Ky.— C, T

ALDEN CORP., 1 Exchange Place, Jersey City, N. J.,

"Alden"— C, T
ARCADIA— Wells-Gardner & Co.
BUD RADIO, INC., 5205 Cedar Ave., Cleveland,

Ohio, "Bud"— M

CASTLEWOOD MFG. CO., INC., 12th & Burnett.

Louisville, Ky. — C, T
CASWELL-RUNYAN CO., Huntington. Ind.— C. T
CHICAGO NOVELTY FURNITURE CO., 1750-60 N

Campbell Ave., Chicago, IIL — C
CHURCHILL CABINET CO., 2119 W. Churchill St.,

Chicago, ni.— C, T
ERIE CAN CO., 816 Erie St., Chicago, 111.— M
GRECO CABINET CO., 135 Plymouth St., Brooklyn,

N. Y.— C, T

ILLINOIS WOOD PRODUCTS CORP., 2512 So. Damen

Ave., Chicago, HI. — C, T
INSULINE CORP. OF AMERICA. 25 Park Place, New

York, N. Y.— M
JOHNSON & TITUS, 423 E. State St., Rockford, ni.

Designers
KELLOGG SWITCHBOARD & SUPPPLY CO., 6650

So. Cicero Ave., Chicago, 111., "Kellogg" — C, T
LEFEBURE CORP., 3117 1st Ave., Cedar Rapids,

Iowa — M
PAR METAL PRODUCTS CORP., 35-25 41st St..

Long Island City, N. Y., "Par-Met"— M
SHEET METAL SPECIALTY CO., 1417 W. Pico Blvd.

Los Angeles, Calif. — M

* CASTLEWOOD *

MAKERS of

± ine Cabinets

for the

Radio and Electrical Trade

• Consoles

• Table Models

• Cases for Testing Equip-
ment

• Speaker Housings

• Combination Phono • Radio
Cabinets

• Special Equipment

We are serving many of the best
known companies in America.

For thoroughly good, engineered
wood work, send your inquiries to —

CASTLEWOOD

MANUFACTURING COMPANY

N. P. BLOOM, Pres.
12th & Burnett Sts. Louisville, Kentucky

LIGHTWEIGHT
COMPACT
PORTABLE

WRITE FOR DETAILS AND PRICES

D. W. ONAN & SONS

.">i)7 Royalston Ave. Minneapolis, Minn.

MARCH, 7939

CABINETS— contd

COILS & I.F. TRANSFORMERS

BATTERIES, DRY & WET

STANDARD CABINET CO., INC., 543 Union St.,
Brooklyn, N. Y.— C, T

SUPERIOR CABINET CORP., 3611 14th Ave., Brook-
lyn, N. Y., "Superior"

UNITED CABINET MFG. CO., 629 W. Cermak Rd.,
Chicago, I1L

WARREN FURNITURE CO., Warren, Pa.,— C, M, T

WATTERSON RADIO MFG. CO., Dallas, Texas— C, T

WELLS-GARDNER & CO., 2701 N. Kildare Ave.,
Chicago, 111., "Arcadia" — C, T

WESTERN ELECTRONICS CO., 1810 S. W. Yamhill,
Portland, Ore. — C, M

AMERICAN
CONDENSERS

— ALL TYPES —

By- Pass and
Electrolytic

FOR NEW AND REPLACEMENT
SERVICE

• The ideal capacitor for replacement
service. Available in all standard types
and capacities. Built of the finest mate-
rials that for years have distinguished
American Condensers. Attractively pack-
aged for easy merchandising — and priced
to net you a substantial profit. Descrip-
tive literature and prices on request.

A COMPLETE LINE FOR THE
PARTS JOBBER

AMERICAN
CONDENSER CORP.

2508 So. Michigan Ave., Chicago, III.

THE

BROWNING

LMNE

FOR *»»

Here is the fastest
selling line in the
amateur game. Ex-
cellent merchandise,
PRICED RIGHT, de-
signed by men who
know the amateur's
problems.

Live, wide awake
Jobbers everywhere are
cashing-in on these fine units. A few territories
still open to good Ham supply houses. Write
or wire today for our interesting proposition.
Our 1939 catalog completely describes the
line. It's yours for the asking.

BROWNING LABORATORIES, INC.

750 MAIN STREET WINCHESTER, MASS.

Coil forms F

Coil winding equipment ■ ■ W

I.F. colli IF

R.F. chokes (receiving) . CH
R.F. coils (receiving) . . . RF

Transmitting T

Permeability R.F. assemblies -P

ALDEN PRODUCTS CO., 715 Center St., Brockton,
Mass., "Na-Ald"— RF

ALADDIN RADIO INDUSTRIES, INC., 468 W. Su-
perior St., Chicago, 111., "Aladdin" — IF, CH, P,
RF, T

AMERICAN PHENOLIC CORP., 1250 W. Van Buren

St., Chicago, 111., "Amphenol" — F
AM PHENOL — American Phenolic Corp.

ANACONDA WIRE & CABLE CO., 25 Broadway. New
York, N. Y.— F, IF. CH, RF, T

AUTOMATIC WINDING CO., INC., 900 Passaic Ave.,
East Newark, N. J.— IF, CH, RF

BROWNING LABORATORIES, INC., 750 Main St..
Winchester, Mass. — IF, CH, RF, T

BUD RADIO, INC., 5205 Cedar Ave.. Cleveland,
Ohio, "Bud "— F, CH, RF, T

CARR0N MFG. CO., 415 S. Aberdeen St., Chicago,
111., "Carron"— IF, CH, RF, T

COLLINS RADIO CO., 2920 First Ave., Cedar Rapids,
Iowa, "Collins" — T

CONSOLIDATED WIRE & ASSOC. CORPS., Peoria St..
Chicago, HI.— CH.IF, RF, T

C0T0-C0IL CO., INC., 229 Chapman St., Providence,
R. I., "Coto"— CH, IF, RF, T

D-X RADIO PRODUCTS, 1575 Milwaukee Ave., Chi-
cago, 111., "DX"— CH, IF, RF, T

J. E. FAST & CO., 3101 W. Pulaski St., Chicago,
111.— CH, RF

GENERAL MFG. CO., 1255 S. Michigan Ave., Chicago,
HI., "Gen-Ral"— IF, CH, RF

GEN-RAL— General Mfg. Co.-

GENERAL WINDING CO., 254 W. 31st St., New
York, N. Y., "Gen-Win"— F, W, IF, CH, RF. T

GEN-WIN— General Winding Co.

E. I. GUTHMAN & CO., INC., 400 S. Peoria St..
Chicago, 111., "Guthman"— F, W, IF, CH, RF

HAMMARLUND MFG. CO., 424 W. 33rd St.. New
York, N. Y., "Hammarlund"— F, IF, CH, RF, T

ICA — Insuline Corp. of America

INSULINE CORP. OF AMERICA, 25 Park Place, New
York, N. Y., "ICA"— F, W, IF. CH, RF, T

ISOLANTITE, INC., 233 Broadway, New York, N. Y.
"Isolantlte" — F

E. F. JOHNSON, Waseca, Minn., "Johnson"— T

P. R. MALL0RY & CO., 3029 E. Washington St.,
Indianapolis, Ind., "Mallory" — CH

MEISSNER MFG. CO., 7th & Belmont, Mt. Carmcl,
111., "Meissner" — F, W, IF, CH, RF, T

J. W. MILLER CO., 5917 S. Main St., Los Angeles,
Calif., "Miller"— CH, IF, RF

NA-ALD — Alden Products Co.

NATIONAL COMPANY, 61 Sherman St., Maiden.
Mass., "National," "N-C"— CH, IF, RF, T

N-C— National Co.

PACIFIC RADIO CORP., 5016 S. Main St., Los An-
geles, Calif.— IF, CH, RF

PEERLESS RADIO MFG. CO., Division St. & Broad-
way, Albany, N. Y., "Peerless" — T

PHILCO RADIO & TELEVISION CORP., Tioga & C
Sts., Philadelphia, Pa., "Philco"— IF, CH, RF

PRECISION INDUCTANCE CORP., 591 Broadway,
New York, N. Y.— F, IF, CH, RF, T

PREMIER CRYSTAL LABS, INC., 55 Park Row, New
York, N. Y., "Premier"— T

RCA MFG. CO., Front & Cooper Sts., Camden, N. J..
"RCA"— IF. RF, T

F. W. SICKLES CO., 300 Main Street, Springfield.
Mass., "Sickles"— CH, IF, RF

SYNTHANE CORP., Highland Ave., Oaks, Pa— F

TELERADIO ENGINEERING CORP., 484 Broome St.,
New York. N. Y., "Teleradio"— IF, CH, RF, T

TRIUMPH MFG. CO., 4017 W. Lake St., Chicago,
111.— IF, CH, RF, T

ULTRAMAR MFG. CORP., 303 W. Monroe St., Chi-
cago, 111.— CH, IF, RF

UNIVERSAL WINDING CO., Providence, R. I„ "Uni-
versal"—W

"A" blocks A

"B" .....B

"C" C

Dry cells DC

Flashlight cells FL

Storage . . . S

Battery eliminator EL

AIR CELL— National Carbon Co.

BOND ELECTRIC CORP., 146 Munson St., New Ha-
ven, Conn., "Bond" — A, B, C, DC, FL

BRIGHT STAR BATTERY CO., 200 Crooks Ave.,
Clifton, N. J., "Bright Star," "Uneedit"— A, B.
C, DC, FL

BURGESS BATTERY CO., Freeport, 111., "Burgess"
—A, B, C. DC, FL

DELCO — United Motors Service

ELECTRIC STORAGE BATTERY CO., Allegheny Ave.
& 19th St., Philadelphia, Pa., "Exide" — S

EVEREADY— National Carbon Co.

EXIDE— Electric Storage Battery Co.

GENERAL DRY BATTERY CO., Cleveland, Ohio

GEN-E-ROTOR, 614 Grand Ave., Des Moines, Iowa,
"Gen-E-Rotor"— S

GLOBE-UNION, INC., 900 E. Keefe Ave., Milwaukee.
Wis., "Globe-Union" — S

JUMBO BATTERY MFRS., Ellsworth, Iowa, "Jumbo"
— S

KATHANODE CORP., 369 Lexington Ave., New York,
N.' Y.— S

LAYERBILT— National Carbon Co.

MONARK BATTERY CO., INC., 4556 W. Grand Ave.,
Chicago, 111., "Monark" — S

NATIONAL CARBON CO., INC., 30 West 42nd St.
New York, N. Y., "Air Cells," "Eveready," "Layer-
bilt"— A, B, C, DC, FL

PHILCO RADIO & TELEVISION CORP., Tioga & C
Sts., Philadelphia, Pa., "Philco"— A, B, C, DC,
FL, S

RAY-0-VAC CO., 2317 Winnebago St., Madison. Wis .
"Ray-O-Vae"— A, B, C, DC, FL

STROMBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Rd., Rochester, N. Y.— S, DC

UNITED MOTORS SERVICE, 3044 W. Grand Blvd.,
Detroit, Mich., "Delco" — S

UNIVERSAL BATTERY CO., 3410 S. LaSalle St..
Chicago, 111., "Universal" — S

U S L BATTERY CORP., Niagara Falls, N. Y.,
"U-S-L"— S

MONTGOMERY WARD & CO., W. Chicago & N. Larr
Sts., Chicago, III., "Airline"— A, B, C, DC, FL, S

WILLARD STORAGE BATTERY CO., E. 131st St. &
St. Clair Ave., Cleveland, Ohio, "Willard"— S

CONDENSERS, FIXED

HI-

Ceramic (compensating) . C

Electrolytic dry ED

Electrolytic wet EW

Industrial I

Mica receiving M

Padding mica PM

Paper (receiving) P

Silvered mica SM

Transmittinq T

AEROVOX CORP., 70 Washington St., Brooklyn. N. Y.,
"Aerovox," "Hi-Farad"— ED, EW, I, M, PM, P,
SM, T

A I REX — Electronic Products Co.

AMERICAN CONDENSER CO., 2508 S. Michigan Ave.,
Chicago, III.— ED, I, P. T

AMNIL — Girard Continental Condenser Corp.

VICTOR J. ANDREW, 7221 S. Francisco Ave., Chi-
cago, 111.— T

RADIO YEAR BOOK

»1«

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LTRA HIGH
QUENCY SIGNALS

WHERE YOU WANT THEM

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Model 772
5000 VOLT
TELEVISION AND RADIO ANALYZER

Sensitivity 20,000 ohms-per-volt.
input impedance 100 megohms on top range.
Specially designed low-leakage jacks.
Breakdown voitage in accordance with AIBE

safety standards. . . 11,000 volts.
Current readings down to Yz microampere.

NOTE — present owners of 20,000 ohms-per-volt
analyzers can bring them up-to-date with the com-
pact WESTON 5,000 volt Televerter ... an inex-
pensive multiplying unit which fits the carrying case-

Model 669

VACUUM TUBE VOLTMETER— measures

gain in video and sound amplifying chan-
nels— peak voltages in thyraton (saw-
tooth) generators in oscillator circuits —
grid potentials on cathode ray tubes — as
well as other essential measurements in
all sound receivers.

Essential for all branches of

television, for police radio,

aircraft, maintenance trucks, etc.

SEND COUPON

FOR

COMPLETE INFORMATION

Weston Electrical Instrument Corporation
597 Frelinghuysen Ave;, Newark, N. J.
Send bulletin describing the Model 787 Ultra High Fre-
quency Oscillator and other WESTON Instruments.

Name-

Address-
City

-State-

hecan

cffevy*11

THE GREATEST
TUBE DEAL

in RADIO

IF YOU HAVE a reputable radio busi-
ness...a location free from interfer-
ence with already established Tung-
Sol agents. ..A turnover of tube stock
at least every three or four months
. ..Facilities that lend themselves to
prominent display of attractive adver-
tising material. ..A reputation for main-
taining standard prices . . . Depend-
ability for rendering prompt monthly
reports of consigned stock with
remittances for tubes already sold.

Be sure to see the salesman hand-
ling Tung-Sol Radio Tubes the next
time he calls. Listen carefully to his
story. Dealers who have qualified
as Tung -Sol Retail Agents have
found the consignment plan the
means to a profitable tube business.

TUnC-SOL RRDIO TUBES

TUNG-SOL LAMP WORKS INC., DEPT. C RADIO DIVISION • SALES OFFICES: ATLANTA • CHICAGO • DALLAS

DENVER • DETROIT • KANSAS CITY • LOS ANGELES • NEW YORK • GENERAL OFFICES: NEWARK, NEW JERSEY

RADIO YEAR BOOK

CONDENSERS, FIXED -Cont'd

ATLAS CONDENSER PRODUCTS CO., 548 Westches-
ter Ave., New York, N. Y., "Atlas Mites"— ED, P

ATOMS — Sprague Products Co.

AUTOMATIC WINDING CO., INC., 900 Passaic Ave.
East Newark, N. J.— PM

BEAVER— Comell-Dubilier Corp.

BLUE RIBBON— Curtis Condenser Corp.

CENTRALAB, 900 E. Keefe Ave., Milwaukee, Wis.— C

C-D — Comell-Dubilier Corp.

CERAMICONS— Erie Resistor Corp.

CONDENSER CORP. OF AMERICA, 2000 Hamilton
Blvd., South Plainfleld, N. J.— ED, EW, P

CONDENSER PRODUCTS, 1369 N. Branch St., Chi-
cago, 111. — ED, P

CONSOLIDATED WIRE & ASSOC. CORP., Peoria &
Harrison Sts., Chicago, III. — ED, P, T

CONTINENTAL CARBON, INC., 13900 Lorain Ave.,
Cleveland, Ohio, "Continental" — P, T

CORNELL-DUBILIER CORP., Hamilton Blvd., So.
Plainfleld, N. J., "Comell-Dubilier," "Beaver,"
"C-D"— ED, EW, I, B, PM, P, SM, T

COSMIC RADIO CORP., 699 E. 135th St., New York,
N. Y., "Cosmic," "Megrite" — ED, P

CROLITE— Henry L. Crowley & Co., Inc.

HENRY L. CROWLEY & CO., 1 Central Ave.. West
Orange, N. J., "Crolite" — ED

CURTIS CONDENSER CORP., 3088 W. 106th St.,
Cleveland, Ohio, "Standard," "Super," "Blue Rib-
bon"— ED

DE-JUR-AMSCO CORP., Shelton, Conn.— M, RT

TOBE DEUTSCHMANN CORP., Canton, Mass., "Fil-
ter-Mite," "Pluggin," "Tobe," "Micranol"— ED,
I, P, T

DOMINO— Solar Mfg. Corp.

DUMONT ELECTRIC CO., INC., 514 Broadway, New
York, N. Y., "Dumont" — ED, EW, I, M, P, T

ECCO HIGH FREQUENCY CORP., 120 W 20th St.,
New York, N. Y., "Ecco H.F." — T

ELECTRO MOTIVE MFG. CO., INC., 797 E. 140th
St., New York, N. Y.— M. PM

ELECTRONIC PRODUCTS CO., 5356 E. 9th St.. Los
Angeles, Calif., "Aires" — T

ERIE RESISTOR CORP., 644 W. 12th St., Erie, Pa.,
"Ceramicons," "Erie" — I, M, PM, T, C

EX-STAT— Tilton Electric Corp.

J. E. FAST & CO., 3121 N. Pulaski St.. Chicago
111— I, P, T

FILTERMATIC MFG. CO., 6319 Ditman St., Phila-
delphia, Pa. — M

FILTER-MITE— Tobe Deutsehmann Corp.

A. W. FRANKLIN MFG. CORP., 175 Varick St., New
York, N. Y., "Franklin"— M

GENERAL RADIO CO., 30 State St.. Cambridge.
Mass., "G-R"— Precision M, Special

G-H— Girard-Hopkins

G1RARD-H0PKINS, 1437 23rd Ave., Oakland. Calif.,
"G-H"— ED, P, T, EW

G-R— General Radio Co.

HI-FARAD — Aerovox Corp.

ILLINOIS CONDENSER CO., 1160 N. Howe St
Chicago, 111., "Illinois" — ED, I

INSULINE CORP. OF AMERICA, 25 Park Place. New
York, N. Y., "ICA"— PM, T

E. F. JOHNSON, Waseca, Minn., "Johnson"— T

KELLOGG SWITCHBOARD & SUPPLY CO., 6650 So
Cicero Ave., Chicago, 111., "Kellogg" — P

LEEDS & NORTHRUP CO., 4970 Stenton Ave.,
Philadelphia, Pa.— Precision M

LfTTLE GIANT— Solar Mfg. Corp.

MAGNAVOX CO., 2131 Bueter Rd., Ft. Wayne, Ind.,
"Magnavox" — ED, EW, P

P. R. MALLORY & CO., 3029 E. Washington St.,
Indianapolis, Ind., "Mallory" — ED, EW. I, M,
PM, P, T

MEGRITE— Cosmic Radio Corp.

MICAMOLD RADIO CORP., 1087 Flushing Ave.,
Brooklyn, N. Y., "Micamold"— ED, EW, M, PM.
P, T

MICRANOL— Tobe Deutsehmann Corp.

MINICAP— Solar Mfg. Corp.

MITES — Atlas Condenser Products Co.

MORRILL & MORRILL, 30 Church St., New York,
N. Y., "Morrill"— P, T

MUTER CO., 1255 S. Michigan Ave., Chicago, 111.,
"Muter"— C, SM

PHILCO RADIO & TELEVISION CORP., Tioga & C
St.. Philadelphia, Pa., "Philco"— ED, EW. M,
PM. P

EXACT-DUPLICATE'
Replacement Condensers

• For years, flEROVOX has pioneered the exact-duplicate idea,
despite vigorous opposition. We built up the most extensive line
covering all standard set needs, while others offered general-
utility units for make-shift replacements. No production runs
have been too small for us, even on the more special types. List-
ings, constantly expanded, have always been kept up to date.
Truly a colossal, difficult, costly job. • But now, in 1939, we
enjoy our reward: Our judgment is fully vindicated; servicemen
prefer exact duplicates; and the condenser industry at large
accords us that sincerest flattery of following in our footsteps.

• So:

Insist on EXACT DUPLICATES . . .

Your local flEROVOX jobber has the most up-to-date
listing available for your use. You can immediately select and
9 get that replacement which fits right, works right, looks

right, for a stay-put, satisfactory, profitable job. Ask for
latest catalog — or write us direct.

AEROVOX CORPORATION

New Bedfad, Mail.

Sales Offices in AN Principal Cities

MARCH. 7939

"New

CAM LEVER

DIAL

The Greatest Improvement
in Radio Dial Construc-
tion in Many Years

ELIMINATES— Strings Belts
Gears - Pulleys - Springs.

SOLVES — All Automatic and
Manual Tuning Problems.

ASSURES — Minimum Friction •
Free and Smooth Action - No Slip-
page or Play - Precision Syn-
chronization Between Dial and
Condenser - Accurate Dialing -
Perfection in Automatic and Man-
ual Tuning.

ADAPTABLE— To any Type of
Condenser, Transformer or Other
Tuning Unit.

Write for additional information

OTHER

Popular Products

ESCUTCHEONS

DIALS • DIAL SCALES

DIAL MECHANISMS

MOLDED CRYSTALS

MANUFACTURERS and ENGI-
NEERS— Our Engineering and De-
signing services are free. Let us
cooperate with you.

JOBBERS — The outstanding fea-
tures and quality of our products
have won the enthusiastic approval
of the trade. Write today for com-
plete information.

American Emblem Co.

INCORPORATED

P. O. Box 116-J UTICA, N. Y.

Sales Offices:
NEW YORK . PHILADELPHIA . CHICAGO
DAYTON . DETROIT ST. LOUIS

1914 Silver A

nniversary

1939

CONDENSERS, FIXED— cont-d

PLUGGIN — Tobe Deutschmann Corp.

POTTER CONDENSER CO., 565 W. Washington Blvd.,

North Chicago, HI., "Potter" — ED, I, P, T
PRECISION INDUCTANCE CORP., 591 Broadway.

New York, N. Y.— M, PM
RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,

"RCA Faradon," "RCA"— ED, EW, M, P, T
SANGAMO ELECTRIC CO., Springfield, 111.. "San-

gamo"— M, T

SEALDTITE— Solar Mfg. Corp.

SEVISION ENGINEERING CO., 379 Phillips Ave.,
Toledo, Ohio — P

SOLAR MFG. CORP., 599 Broadway, New York,
N. Y., "Solar," "Domino," "Sealdtite," "Tom
Thumb," "Transoil," "Transmica," "Minicap,"
"Little Giant"— ED, EW, I, M, PM, P, SM, T

SPRAGUE PRODUCTS CO., North Adams, Mass.,
"Sprague 600 Line," "Atoms" — ED. EW, M, P,
SM, T

STANDARD — Curtis Condenser Corp.

STR0MBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Rd., Rochester, N. Y.— P

SUPER — Curtis Condenser Corp.

SUPER SEAL — Girard Continental Condenser Corp.

TILTON ELECTRIC CORP., 15 E. 26th St.. New
York, N. Y., "Ex-Stat"— ED, EW. P

TOBE — Tobe Deutschmann Corp.

TOM THUMB— Solar Mfg. Corp.

TRANSMICA, TRANSOIL— Solar Mfg. Corp.

CONDENSERS, VARIABLE

-X-

Air trimmer A

Mica trimmer M

Receiver tuning . . . . RT
Transmitter tunning . TT

ALDEN PRODUCTS CO., 715 Center St., Brockton.

Mass., "Na-Ald"— M, BT
AMERICAN STEEL PACKAGE CO., Squire Ave..

Defiance, Ohio, "Defiance" — RT
ATKINS & BROWN, 215 Fourteenth St., Oakland.

Calif.. "A & B"— TT
AUTOMATIC WINDING CO., INC., 900 Passaic

Ave., East Newark, N. J. — A, M
BROWNING LABORATORIES, INC., 750 Main St..

Winchester, Mass.— RT, TT
BUD RADIO, INC., 5205 Cedar Ave., Cleveland.

Ohio, "Bud"— A, M, RT, TT
ALLEN D. CARDWELL MFG. CORP., 81 Prospect

St., Brooklyn. N. Y., "Cardwell"— A, RT, TT
D-X PRODUCTS CO., 1575 Milwaukee Ave.. Chicago.

III., "DX"— M
DEFIANCE— American Steel Package Co.
DE-JUR-AMSCO CORP., Shelton, Conn.. "De-Jur

Amsco" — M, RT
ELECTRO MOTIVE MFG. CO., INC., 797 E. 140th

St., New York, N. Y., "Elmenco"— M
GENERAL INSTRUMENT CORP.. 829 Newark Ave..

Elizabeth, N. J., "G. I."— RT
G. I. — General Instrument Corp.
GENERAL MFG. CO., 8066 S. Chicago Ave.. Chi-
cago, m. — m
GENERAL RADIO CO., 30 State St.. Cambridge.

Mass., "G-R" — Special purpose
G-R — General Radio Co.
GENERAL WINDING CO., 254 W 31st St.. New

York, N. Y.( "Gen-Win"— A, M
GEN-WIN — General Winding Co.
E. I. GUTHMAN & CO., INC., 400 S. Peoria St.,

Chicago, ni., "Guthman" — A, M
HAMMARLUND MFG. CO., 424 W. 33rd St., New

York, N. Y., "Hammarlund"— A, M, RT, TT
HYGRADE-SYLVANIA CORP., Clifton, N. J.— TT
INSULINE CORP. OF AMERICA, 25 Park Place,

New York, N. Y., "ICA"— A. M, RT, TT
E. F. JOHNSON, Waseca, Minn., "Johnson"— TT
P. R. MALL0RY & CO., 3029 E. Washington St.,

Indianapolis, Ind., "Mallory" — M
MEISSNER MFG. CO., 7th & Belmont, Mt. Carmel,

El., "Meissner"— A, M. RT
J. W. MILLER CO., 5917 S. Main St., Los Angeles,

Calif., "Miller"— A, M
NATIONAL CO., 61 Sherman St., Maiden, Mass.,

"National" — A, M. RT, TT
PHILC0 RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Phiico"— M, RT
RADIO CONDENSER CO.. Davis St. & Copewood

Ave.. Camden, N. J., "R.C.C."— RT

RCA MFG. CO., Front & Cooper Sts., Camden, N. J..

"RCA Faradon"— A, M, RT
R.C.C. — Radio Condenser Co.

RELIANCE DIE & STAMPING CO., 1260 Clybourn
- Ave., Chicago, El. — RT
F. W. SICKLES CO., 300 Main St., Springfield,

Mass., "Sickles" — A, M
SOLAR MFG. CORP., 599 Broadway, New York,

N. Y., "Solar"— M
SPRAGUE PRODUCTS CO., North Adams, Mass..

"Sprague" — M
TELERADI0 ENGINEERING CORP., 484 Broome St..

New York, N. Y., "Teleradio"— A, M
UNITED SCIENTIFIC LABORATORIES, INC., 400

Lafayette St.. New York, N. Y., "United Scientfflt

Lab."— RT

DIALS & PARTS

Complete dials O

Crystals C

Decalcomanias DE

Dial lamps L

Dial pointers P

Escutcheons E

Faces or scales F

Knobs— molded KM

Knobs— wooden KW

Name plates . N

Pilot light assemblies PL

ALDEN PRODUCTS CO.. 715 Center St., Brockton.
Mass.— D, L, E, KM

AMERICAN EMBLEM CO., INC., P. O. Box 116,
Utica, N. Y.— D, C, P, E, F

ANGELL EMBOSSING CO., 1265 Broadway, New
York, N. Y.— N

AUBURN BUTTON WORKS, Auburn, N. Y.— KM

0. AUSTIN CO., 640 Broadway, New York, N. Y.
— F, DE

BASTIAN BROS. CO., 1600 No. Clinton Ave..
Rochester, N. Y— D

BUD RADIO, INC., 5205 Cedar Ave., Cleveland.
Ohio, "Bud"— D, E, KM, KW

CONSOLIDATED WIRE & ASSOC. CORP., Peoria *
Harrison Sts., Chicago, El. — KM

CONTINENTAL-DIAMOND FIBRE CO., Newark. Del..
"Dilophane" — D

C0T0-C0IL CO., INC., 229 Chapman St., Providence,
R. I„ "Coto-Wheel"— D, KM

CROWE NAME PLATE & MFG. CO., 3701 Ravens-
wood Ave., Chicago, EL. "Crowe" — D, C, P, E. V.
KM, N, PL

CUTLER-HAMMER, INC., N. 12th St. & W. St. Paul
Ave., Milwaukee, Wis., "Cutler-Hammer" — KM

OAVEN CO., 158 Summit St., Newark, N. J.. "Daven"
— E, KM

HARRY DAVIES CO., 1428 No. Wells St.. Chicago.
El.— KM

DE-JUR-AMSCO CORP., SheltoD, Conn.— D

Gxvmic

'DWARF'

ELECTROLYTIC

• This miniature electro-
lytic— 8 mfd. 550 peak-
is typical of the new line
of Cosmic "Dwarfs." It
has the good points of
previous condensers plus the very latest developments.
Weather-protected. Mountings removable if space re-
quires. All uniform dimensions. All attractively priced.
550 V peak — 2, 4, 6, 8 mfd.
200 V peak — 4, 8, 10, 12 and 16 mfd.
200 V peak duals — 4-4, 8-4, 8-8 and 16-8 mfd.
If your jobber cannot supply, write to

COSMIC RADIO CORPORATION

699 EAST 135TH STREET NEW YORK

RADIO YEAR BOOK

FOR RADIO

Mica, Paper, Dykanol, Wet and Dry Electroly-
tics in any capacity and voltage combinations

CORNELL -DUBILIER CAPACITORS

Standardized sizes, shapes, designs to meet
every Radio and Electrical Requirement. Cat.
No. 16571 available on request.

World's Largest Manufacturers of Capacitors

CORNELL -DUBILIER ELECTRIC CORPORATION

1022 HAMILTON BOULEVARD • SOUTH PLAINFIELD NEW JERSEY

MARCH, 7939

46 Years of KNOWING HOW!

In '93 when the world was gasping at
the sights of the Chicago World's Fair,
the Fred Goat Company was founded
to pioneer important developments in
cooperation with the rnetal working and
special machinery industries. For nearly
half a century, Goat has collaborated
with engineers in a continuous pioneer-
ing service. Notable contributions were
made to radio, including the now fa-
mous form-fitting tube shields.

1939 finds Goat the leading independent
supplier of tube parts and tube shields.
This is the TENTH year of Goat service
to the radio industry. Besides cooperat-
ing with leading radio engineers, Goat
is constantly pioneering improvements
in shielding to promote better reception.
In fact, the form-fitting feature of the
Goat shield has contributed greatly to-
ward the compactness of present day re-
ceivers.

STANDARD and SPECIAL TYPES of SHIELDS for Home sets
. . . Auto radio . . . Portables . . . Amateur . . . Police . . .
Aircraft . . . Marine . . . Sound Systems . . . Intercommunicators, etc.

GOAT 1100 SERIES — FEATURING . . . Beaded top . . . Easy
assembly . . . Complete shielding . . . Sturdy construction . . . Im-
proved grounding . . . Better appearance . . . Greater stability . . .
Space saving . . . Economy. Write for catalog and samples.

GOAT RADIO TUBE PARTS. INC.

A Division of the Fred Goat Co.
314 DEAN STREET BROOKLYN. NEW YORK

Check the NEW LOCTAL TUBES with Certainty/

FOR EMISSION TYPE CHECKERS

Loctal tap octal base.

No. 988LIS List $1.25

No. 9-LO— Unwlred parts I/iot .40

FOR MUTUAL CONDUCTANCE

Adapter

•986LIS

•985LI

*986L3

"S88L3

•987LISA

-986L2S

*986L4

986LIS 985LI

TYPE CHECKERS

Tests in Socket List

1231. 7A7 6C6 $1.25

7Y4 84 1.00

35A5 43 1.00

7A6 GH6 1.00

7A8 6A7 1.25

7C6 75 1.25

35Z3 25Z5 1.00

^P-^ *>—» F0R 7-PRONG LATCH TYPE ANA-

Uri r®t LYZER PLUG AND PANEL SOCKET

^M WW No. 978LSA List $1.25

"' No. 988L2 List 1.00

tFOR TOGGLE-LOCK ANALYZER
PLUG AND PANEL SOCKET
No. 988TLNL List $1.00

No. 988L2 List 1.00

Special Adapters or special circuits available promptly.
Write us for further information.

Naald Adapters are the ones you can
safply buy. Worked out with instru-
ment and tube mfrs. Insure perfect operation over
long life period.

Loctal tubes with their small pins and base-shape,
require moldings designed to get longest possible con-
tact. Alden has provided for this maximum contact.
The increased insertions demand contacts able to
withstand severe wear with perfect operation over a
long life period. Naald patented Parallel Precision
contacts — silverplated — same type that withstood life
tests of perfect contact after more than 1,750,000
insertions, give you assurance of dependable operation.
Insist on Naald in any new equipment you purchase
— to bring your present equipment up to the mimite.
Get the best — correctly wired — correctly thought out
— with contacts which have proven themselves su-
perior in long life service.

ALDEN PRODUCTS COMPANY

DEPT. RTA BROCKTON, MASS.

A Quick Source of

DECALCOMANIAS

5 to 14-Day Delivery

One half usual time applying
We supply prominent radio manufacturers with
Decorative Transfers
Decals for marking knob and

switch positions
Dealer Window Transfers
Super quality — Highly flexible — Easy to apply
Reasonably priced

Glass and Plastic Radio Dials

For indirect and direct lighting. Instrument
and clock faces.

Process printing — glass, metal, wood, cloth,
plastics, cardboard.

Send specifications for quotation

THE 0. AUSTIN COMPANY

640 Broadway

New York, N. Y.

If It's a CANNON-BALL
It is a GOOD
HEADSET

For clarity of tone use
Cannon - Ball sensitive
phones. Assure depend-
able performance. Guar-
anteed to give absolute
satisfaction. Write Head-
set Headquarters for
folder T-4 illustrating
complete line.

C. F. CANNON COMPANY

Springwater, N. Y.

Scientifically
Built
Heavy bar mag-
nets greatly in-
crease their effi-
ciency.

DIALS & PARTS-Confd

DIAL LIGHT CO., 136 Liberty St., New York, N.Y.

DIEMOLDING CORP., Canastota, N. Y — KM

DILOPHANE — Continental-Diamond Fibre Co.

DRAKE MFG. CO., 1713 W. Hubbard St., Chicago,
111., "Drake"— Bulb Sockets, Indicator Lights — PL

DUAL REMOTE CONTROL CO., 7228 Warwick St..
Detroit, Mich., "Dual" — E

HUGH H. EBY, INC., 2066 Hunting Park Ave..
Philadelphia, Pa., "Eby" — KM

E. M. LAB., INC., 27 Jackson Ave., Long Island City.
N. Y., "Dial Drives"

ENAMEL0ID-CL0IS0NNE— Gemloid Corp.

ERIE RESISTOR CORP., 644 W. 12th St., Erie, Pa..

"Erie"— C, E, P, KM
A. W. FRANKLIN MFG. CORP., 175 Varick St.. New

York, N. Y., "Franklin"— D, E, KM

GEMLOID CORP., 425 4th Ave., New York, N. Y..

"Enameloid-Cloisonne" — D, E
GENERAL CEMENT MFG. CO., 611 Lincoln Ave..

Rockford, HI., "G-C" — Cable & belts
G-C — General Cement Mfg. Co.
GENERAL RADIO CO., 30 State St., Cambridge.

Mass. — D, KM
GORDON SPECIALTIES CO., 1104 South Wabash Ave..

Chicago, 111.— D, F, KM
HUNTER PRESSED STEEL CO., Lansdale, Pa— D,

P, E
HYGRADE SYLVAN I A CORP., Clifton, N. J.— D
ICA — Insuline Corp. of America
INSULINE CORP. OF AMERICA, 25 Park Place, New

York, N. Y., "ICA" — D, C, L, P, E, F, KM, KW
INSUR0K— The Richardson Co.

E. F. JOHNSON, Waseca, Minn., "Johnson"— P

KAAR ENGINEERING CO., 619 Emerson St., Palo
Alto, Calif., "Kaar"— F

H. R. KIRKLAND CO., 75 West St., New York. N. Y.
— Indicating lamps — PL

KURZ-KASCH CO., Dayton, Ohio— -D, KM

LIBERTY ENGRAVING & MFG. CO., 1601 W. Jef-
erson Blvd., Los Angeles, Calif. — C, P, E

MAGNAV0X CO., 2131 Bueter Road, Fort Wayne.
Ind., "Transradiart" — F

P. R. MALL0RY & CO., INC., 3029 E. Washington
St., Indianapolis, Ind., "Yaxley" — D, L, E, V,
KM

MANUFACTURERS SCREW & SUPPLY HOUSE, 215
W. Hlinois St., Chicago, 111.— KM

MEISSNER MFG. CO., 7th & Belmont Sts.. Mt.
Carmel, 111., "Meissner" — D

NATIONAL COMPANY, 61 Sherman St.. Maldeo.
Mass., "National" — D, KM

PARISIAN NOVELTY CO., 3510 S. Western Ave.
Chicago, 111.— C, F

PHILC0 RADIO & TELEVISION CORP, Tioga St C
Sts., Philadelphia, Pa., "Philco"— L, KM

PHILM0RE MFG. CO., 133 University Place, New
York, N. Y., "Philmore"— C

PREMIER CRYSTAL LABS., INC., 55 Park Row.
New York, N. Y— D, F

RADIO KNOB CO., 43 E. Ohio St., Chicago, HI —
KM

RCA MFG. CO., Front & Cooper Sts., Camden, N. I..
"RCA"— D, E, KM

RECTO MOLDED PRODUCTS, INC., Brownway &
B. & O R.R., Oakley, Cincinnati, Ohio— KM

THE RICHARDSON CO., 2738 Lake St., Melrose
Park, Chicago, 111., "Insurok" — KM

SHEET METAL SPECIALTY CO., 1417 W. Pico Blvd.,
Los Angeles, Calif. — D

STAR MACHINE MANUFACTURERS, INC., Hunti
Point & E. Bay Aves., Bronx, New York, "Star" —
E, KM

F. W. STEWART MFG. CORP., 340 W. Huron St..
Chicago, 111., "Stewart"— D, C, P, E, KM, PL

SYRACUSE ORNAMENTAL CO., Syracuse. N. Y..
"Syrocowood," "Woodite," "Syroco" — E, KW

SYR0C0 — Syracuse Ornamental Co.

SYROCOWOOD — Syracuse Ornamental Co.

TRANSRADIANT— Magnavox Co.

TUNG-SOL LAMP WORKS, INC., Radio Tube Dlv .
95 8th Ave., Newark, N. J., "Tung-Sol"— L

UNIVERSAL MOLDING CO., 16th & Vermont Sts.
San Francisco, Calif. — KM

WOODITE — Syracuse Ornamental Co.
YAXLEY— P. R. Mallory & Co., Inc.

R4DJO YEAR BOOK

HEADPHONES

Crystal C

Dynamic D

Magnetic M

BRUSH DEVELOPMENT CO., 33rd & Perkins Ave.,

Cleveland, Ohio. "Brush" — C
C. F. CANNON CO., Springwater, N. Y., "Cannon

Ball"— M
CARRON MANUFACTURING CO., 415 S. Aberdeen

St. Chicago, HI., "Carron" — D, M
CHICAGO TELEPHONE SUPPLY CO., 1142 W.

Beardsley Ave., Elkhart, Ind.
DICTOGRAPH PRODUCTS CO., INC., 580 Fifth Ave.,

New York, N. Y., "Dictograph" — M
ICA — Insuline Corp. of America
INSULINE CORP. OF AMERICA, 25 Park Place,

New York, N. Y., "ICA"— C. D, M
PAUL JARNAK, 69 W. 83rd St., New York, N. Y.—

Acoustical Earcap
KELLOGG SWITCHBOARD & SUPPLY CO., 6650

So. Cicero Ave., Chicago, 111., "Kellogg" — M
PHILCO RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Philco"— M
PHILMORE MFG. CO., 113 University Place. New

York, N. Y., "Philmore"— M
TRIMM RADIO MFG. CO.. 1770 W. Berteau Ave..

Chicago, 111., "Trimm" — M
WESTERN ELECTRIC CO., 195 Broadway, New York.

N. Y.— D, M

HARDWARE & MISC. PARTS

Binding posts BP

Connectors C

Coil shields CS

Felt washers & gaskets . . . F

Grommets G

Jacks J

Mounting brackets .... MB

Plugs P

Rivets R

Screws S

Sockets SKT

Soldering lugs SL

Terminal strips T

Tube shields TS

Washers— fibre WF

Washers— lock WL

Self-tapping screws . . . SS

ALDEN PRODUCTS CO., 715 Center St., Brockton,
Mass.— BP, C, CS, GC, P, S, SKT, SL, T, TS

AMERICAN EMBLEM CO., INC., Box 116-J, mica,
N. Y.— G, MB, SKT

AMERICAN FELT CO., 315 Fourth Ave.. New York,

N. Y— F
AMERICAN PHENOLIC CORP., 1250 W. Van Buren

St. Chicago, 111., "Amphenol"— C, BP, J, P, SKT,

TS
AMERICAN RADIO HARDWARE CO., 476 Broadway,

New York, N. Y., "Arhco"— BP, C, CS, GC, G,

MB, P, S, SL, T, TS, WF, WL

AMPHENOL — American Phenolic Corp.

ARHCO — American Radio Hardware Co., Inc.

BELDEN MFG. CO., 4647 W. Van Buren St., Chi-
cago, 111.— SL

L. S. BRACH MFG. CORP., 55 Dickerson St., Newark,
N. J.— BP, C

BUD RADIO, INC., 5205 Cedar Ave., Cleveland, Ohio,
"Bud"— BP, C, CS, GC, MB, P, S, SKT, SL, T.
TS, WF, WL

CANNON ELECTRIC DEVELOPMENT CO., 420 West
Ave. 33, Los Angeles, Calif., "Cannon"— P, SKT

CHICAGO TELEPHONE SUPPLY CO., 1142 W.
Beardsley Ave., Elkhart, Ind., "C-T-S" — J

CINCH MFG. CORP., 2335 W. Van Buren St., Chi-
cago, TJ1., "Cinch"— BP, P, SKT, SL

CINEMA ENGINEERING CO., 7606 Santa Monica
Blvd., Hollywood, Calif., "Cinema" — T

COMMUNICATIONS PRODUCTS, 245 Custer Ave.,
Jersey City, N. J.— SKT

C. T. S. — Chicago Telephone Supply Co.
HUGH H. EBY, INC., 2066 Hunting Park Ave.,
Philadelphia, Pa., "Eby"— BP, CS, P, SKT, SL

ECCO HIGH FREQUENCY CORP., 120 W. 20th St.,
New York, N. Y.— P

ERIE CAN CO., 816 Erie St., Chicago, 111., "Erie"
— CS, BP, TS

EX-STAT— Tilton Electric Corp.

FEDERAL SALES CO., 26 So. Jefferson St., Chicago,
El., "Federal"— BP, GC, G, R, S, SL, T, WF, WL

GENERAL CEMENT MFG. CO., 611 Lincoln Ave.,
Rockford, EL, "G-C"— T

G-C — General Cement Mfg. Co.

GENERAL ELECTRIC CO., 1285 Boston Ave., Bridge-
port, Conn., "G-E"— P

G.E. — General Electric Co.

GENERAL RADIO CO., 30 State St.. Cambridge,

Mass.— BP, SKT
GENERAL WINDING CO., 254 W. 31st St., New

York, N. Y., "Gen-Win"— BP
GEN-WIN— General Winding Co.
GOAT RADIO TUBE PARTS, INC., 314 Dean St.,

Brooklyn, N. Y., "Goat Form-Fitting"— CS, GC,

SL, TS
GORDON SPECIALTIES CO., 1104 South Wabash

Ave., Chicago, 111.— G, SL, T, SS
GUARDIAN ELECTRIC CO., 1625 Walnut St., Chi-
cago, 111.— T
HAMMARLUND MFG. CO.. 424 W. 33rd St., New

York, N. Y.— CS, SKT. TS
HEGELER ZINC CO., Danville, 111.— CS, TS
INSULINE CORP. OF AMERICA, 25 Park Place, New

York, N. Y— BP, C, CS, GC, G, MB, P, S. SKT,

SL, T, TS, WF, WL
E. F. JOHNSON, Waseca, Minn.— P
HOWARD B. JONES, 2300 Wabansia Ave., Chicago,

111., "Howard B. Jones"— C, P, S, SKT, SL
KELLOGG SWITCHBOARD & SUPPLY CO., 6650

So. Cicero Ave., Chicago, El., "Kellogg" — SL

LITTLEFUSE LABORATORIES, 4238 Lincoln Ave.,

Chicago, El. — Fuses & Mountings
P. R. MALLORY & CO., INC., 3029 E. Washington

St., Indianapolis, Ind., "Yaxley"— BP, C, MB, P.

SKT, T, WF, WL

AMERICAN
RADIO HARDWARE
Manufacturers e"„°.?1

All building, planning and experimentation in
radio, sound, television, etc., depends upon the
"tremendous trifles" that we call PARTS. Often
tiny, yet indispensable — a problem to the exec-
utive, engineer and experimenter until the right
SOURCE is found.

Our mission is to be that source — originative,
thorough and trustworthy. We are not jobbers.
We actually create and manufacture, producing
parts and hardware here under one roof.
We specialize in metal stampings, screw machine
parts of brass and steel, and insulating materials.
We stock a complete line of screws, nuts, wash-
ers, grommets and assorted hardware for imme-
diate shipment.

Underwriter's

approved pilot Bayonet type Spade

light socket dial light socket bolt

Terminal lug strips in
variety of sizes and lugs

Write for General Catalog and Discounts.

American Radio Hardware Co., Inc.

476 Broadway

New York, N. Y.

FEDERAL

Write for this

•4 catalogue.

Keep it within
easy reach. Put

this list >•

in your card
index.

Exclusive hardware ser-
vice for manufacturers
and jobbers — Saves
time, effort and money — Constantly adding new
items and sizes — Special quotations on large quan-
tities— Whatever you need, try Federal first.

HARDWARE

HARDWARE federal Ml

r need — from one source of supply — for

Everything you can possibly

RADIO, TELEVISION. SOUND EQUIPMENT,

INSTRUMENTS, etc.

□ BOLTS— AND NUTS

□ BOLTS— SPADE
D BRACKETS

D BUMPERS— RUBBER

□ CLAMPS

□ CLIPS— BATTERY

□ COUPLERS— ANTENNA

□ EYELETS

□ GRID CAPS

□ GROMMETS— RUBBER

□ INSULATION

□ JACKS— TIP

□ MOUNTINGS— FUSE

D PLUGS— JACK

□ RIVETS— TUBULAR

□ RODS— THREADED

□ SCREWS— ESCUTCHEON

□ SCREWS— MACHINE

D SCREWS— METAL TAPPING
D SCREWS— ORNAMENTAL HEAD

□ SCREWS— SET

□ SCREWS— WOOD

D SOCKETS— PILOT LIGHT

□ SOCKETS— TUBE

□ SOLDER— PASTE

□ SPACERS— METAL

□ SWITCHES

□ TAPE

□ TERMINAL STRIPS

□ TERMINALS— SOLDERING

□ UNIT PACKAGES*
3 WASHERS— BRASS

□ WASHERS— FIBRE

□ WASHERS— LOCK

□ WASHERS— STEEL
D WIRE

□ WRENCHES— SPINTITE
*Unit Packages of Hardware

for the Jobber.

Whatever

you need — Try FEDl

■RALF-I-R-S-T!

FEDERAL SALES CO. 24-26 S. Jefferson St. Chicago,

MARCH, 7939

When writing advertisers, please say you saw it in the 1939-40 RADIO YEAR BOOK

MUELLER

The Original and Only
Complete Line oi

• CLIPS •

• Alligator Clips • Wee-Pee-Wee Clips

• Copper Clips • 300 Ampere Clips

• Insulated Clips * Insulated Grid Clips

KNOWN FOR 30 YEARS AS THE BEST MADE!

Send for Free Samples and Catalog 980
1573 E. 31st Street Cleveland, Ohio

Par'Metal

RUCKS
CHASSIS

pnnELS

RCCE5S0RIE5

Par-Metal racks, chassis, pan-
els. and accessories are ideal
for Transmitters. Amplifiers.
Monitors. ?.A. Equipment, etc.
Designed by men who know
the needs and applications of
these units in the Sound In-
dustry. A wide selection of
sixes are available at your
local Jobber.

Send Today for our fully ni-
trated Catalog describing the
entire line. It's free.

PAR-METAL PRODUCTS CORP.

35-25 41 ST STREET
LONG ISLAND CITY. N. Y.

HARDWARE
&MISC.PARTS-Confd

MANUFACTURERS SCREW & SUPPLY HOUSE, 215

W. Illinois St., Chicago, 111.— BP, G, MB, P, S, '

SL, WF, WL, P, SS
MEISSNER MFG. CO., 7th & Belmont Sts., Mt.

Carmel, 111., "Meissner" — SKT, T
MICARTA FABRICATORS, INC., 4619 Ravenswood

Ave., Chicago, HL — GC, SKT, T, WF
J. W. MILLER CO., 5917 S. Main St., Los Angeles,

Calif., "Miller"— CS, G, MB, T
MUELLER ELECTRIC CO., 1573 E. 31st St.. Cleve-
land, Ohio, "Mueller Universal Clips"
MUTER CO., 1255 S. Michigan Ave., Chicago, DJ.,

"Muter" — SL
NATIONAL COMPANY, 61 Sherman St., Maiden.

Mass.— CS, SKT, TS
PARKER-KALON CORP., 200 Varick St., New York,

N. T.— SS
PHILC0 RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Philco" — CS, SKT, TS
PHILM0RE MFG. CO., 133 University Place, New

York, N. Y., "Philmore" — BP, C, P
RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,

"BCA"— BP, CS, P, SKT, T, TS
REMLER CO., LTD., 2101 Bryant St., San Francisco.

Calif., "Bemler" — SKT
RIVARD MFG. CO., Toledo, Ohio— Dial cable
SACKHEIM BROS. CORP., 215-219 W. niinois St.,

Chicago, UL— BP, C, GC, G, MB, S, SL, T, WF.

WL
SHAKEPR00F LOCK WASHER CO., 2539 N. Keeler

Ave., Chicago, HI. — WL
H. B. SHERMAN MFG. CO., 22 Barney St., Battl*

Creek, Mich. — C, SL
SYNTHANE CORP., Highland Ave., Oaks, Pa.— SKT, T
TELERADI0 ENGINEERING CORP., 484 Broome St..

New York, N. Y., "Teleradio"— C, MB, T. WF
TILT0N ELECTRIC CORP., 15 E. 26th St., New

York. N. Y.. "Ex-Stat"— S, SL, T, WF, WL
UNITED RADIO MFG. CO., 191 Greenwich St., New

York, N. Y. — Engraving & bakelite panels
UTAH RADIO PRODUCTS CO., 820 Orleans St., Chi-
cago, m. — GC, P, TS
WESTERN ELECTRIC CO., 195 Broadway, New York,

N. Y. — Jacks, keys, lamps
WESTERN FELT WORKS, 4115 Ogden Ave.. Chicago,

IU.— F
WILC0— The H. A. Wilson Co.
WILMINGTON FIBRE SPECIALTY CO., Wilmington,

Del.— WF
THE H. A. WILSON CO., 105 Chestnut St., Newark.

N. J., "Wilco"— R
WROUGHT WASHER MFG. CO., 2225 S. Bay St.

Milwaukee, Wis.— WF, WL
YAXLEY— P. R. Mallory & Co., Inc.
ZIERICK MFG. CORP., 385 Gerard Ave.. New York.

N. Y.— C, GC, MB, SL

METAL SPECIALTIES

Chassis C

Panels P

Racks R

AMERICAN COMMUNICATIONS CORP., 1650 Broad-
way, New York, N. Y., "American" — R
AUTONATOR LABORATORIES, 8440 S. Chicago Ave..

Chicago, 111. — C, P, R
BUD RADIO, INC., 5205 Cedar Ave., Cleveland,

Ohio, "Bud"— C, P, R
CINEMA ENGINEERING CO., 7606 Santa Monica

Blvd., Hollywood, Calif., "Cinema"— P. R
DAVEN CO., 158 Summit St., Newark, N. J.— P, H
ERIE CAN CO., 816 Erie St., Chicago, 111.— C
GENERAL RADIO CO., 30 State St., Cambridge,

Mass., "G-R"— C, P, R
INSULINE CORP. OF AMERICA, 25 Park PI., New

York, N. Y.— C, P, R
LEFEBURE CORP., 3117 1st Ave., Cedar Rapids,

Iowa — C, P, R
NATIONAL CO., 61 Sherman St., Maiden, Mass.,

"National"— C, R, P
PAR METAL PRODUCTS CORP., 35-25 41st St.,

Long Island City, N. Y., "Par Metal"— C, P, R
QUALITY HARDWARE & MACHINE CORP., 5831-49

Ravenswood Ave., Chicago, 111. — C
SHEET METAL SPECIALTY CO., 1417 W. Pico Blvd.,

Los Angeles. Calif.— C, R

STROMBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Rd., Rochester, N. Y. — R

MONTGOMERY WARD & CO., W. Chicago A N
Larr Sts., Chicago, DJ.— C, P, R

WEBER BROS. METAL WORKS. 108 No. Jefferson
St.. Chicago, Dl.— C

INSULATION

Ceramics C

Fiber F

Mica M

Paper P

Plastics PL

Stand-off insulators ■ SO

Tubing (varnished) ■ . T

Varnished cambric ■ ■ VC

ACME WIRE CO., New Haven, Cona— VC

ALDEN PRODUCTS CO., 715 Center St.. Brockton.
Mass.— PL, SO, T

ALPHA WIRE CORP., 50 Howard St.. New York.
N. Y.— SO, T

ALSIMAG — American Lava Corp.

AMERICAN LAVA CORP., Cherokee Blvd. & Mfrs
Road, Chattanooga, Term., "Alsimag" — C, PL, SO

AMERICAN MICA WORKS CORP., 47 West Street.
New York, N. Y— M

AMERICAN PHENOLIC CORP., 1250 W. Van Buren

St., Chicago, nL, "Amphenol" — C, PL, SO. T
AMPHENOL— American Phenolic Corp.
ARMITE — Spaulding Fibre Co., Inc.
AUBURN BUTTON WORKS, Auburn, N. Y.— PL
BAKELITE CORP., 247 Park Ave., New York, N. Y.

"Bakelite," "Polystyrene" — P
BELDEN MFG. CO., 4647 W. Van Buren St.. Chi-
cago, HI., "Belden" — SO
WILLIAM BRAND & CO., 268 Fourth Ave.. New

York, N. Y., "Turbo"— M, T
BUD RADIO, INC., 5205 Cedar Ave., Cleveland, Ohio.

"Bud"— C, SO
CELLULOID CORP., 10 E. 40tb St.. New York.

N. Y., "Lumarith"— PL
COMMUNICATIONS PRODUCTS, 245 Custer Ave..

Jersey City, N. J. — C, SO
CONTINENTAL-DIAMOND FIBRE CO., Newark. Del..

"Diamond," "Dilecto" — F
CORNING GLASS WORKS, Walnut St., Cornini.

N. Y., "Pyrex"— SO
C0T0-C0IL, INC., 229 Chapman St.. Provldene*.

B. I.— C. SO

CROLITE— Henry L. Crowley & Co.

HENRY L. CROWLEY & CO., 1 Central Ave.. West
Orange, N. J., "Crolite" — F

HARRY DAVIES CO., 1428 No. Wells St.. Chicago.

HI.— PL
DIAMOND — Continental-Diamond Fibre Co.
DIEMOLDING CORP., Canastota, N. Y — PL
DILECTO — Continental-Diamond Fibre Co.
DUREZ — General Plastics, Inc.

ELECTRONIC MECHANICS, INC., 201 E. 12th St..
New York, N. Y., "Mycalex" — C

ELECTRONIC PRODUCTS CO., 5356 E. 9th St.. Lot
Angeles, Calif.— SO

ERIE RESISTOR CORP., 644 W. 12th St.. Erie. Pa..

"Erie"— PL
FEDERAL SALES, 26 S. Jefferson St., Chicago. DJ.

— T

FORMICA INSULATION CO., 4638 Spring Grow
Ave., Cincinnati, Ohio, "Formica" — PL

FRANKLIN FIBRE-LAM ITEX CORP.. Wilmington.

Del.— F, PL
FYBEROID— Wilmington Fibre Specialty Co.

GENERAL CEMENT MFG. CO., 611 Lincoln Ave..
Rockford, 111.— F, P. T, VC

GENERAL ELECTRIC CO., Schenectady, N. Y.— PL

GENERAL PLASTICS, INC., North Tonawanda. N. Y..
"Durez"— P

INSUROK— The Richardson Co.

ISOLANTITE, INC., 233 Broadway, New York. N. Y..
"Isolantite"— C. SO

R4DIO YEAR BOOK

INSULATION MANUFACTURERS CORP., 565 W.

Washington Blvd.. Chieago, El.— F, M. P, T, VC
INSUL1NE C08P. OF AMERICA, 25 Park Place, New

York, N. Y.— SO, T
E. F. JOHNSON, Waseca, Minn., "Johnson"— C. SO
KURZ-KASCH CO., Dayton, Ohio— PL
LAMICOID— Mica Insulator Co.
LOCKE INSULATOR CORP., S. Charles & Cromwell

Sts., Baltimore, Md. — C, SO

LUMARTH— Celluloid Corp.

MANUFACTURERS SCREW & SUPPLY HOUSE. 215
W. Illinois St., Chicago, I1L— T. VC

MEISSNER MFG. CO., Mt. Carmel, El.— SO

MICA INSULATOR CO., 200 Varick St., New York.
N. Y., "Lamicoid"— PL, VC, T, M, F

MICARTA FABRICATORS, INC., 4619 Ravenswood

Ave., Chicago, HI.— F, PL, T
MYCALEX CORPORATION OF AMERICA. 7 E. 42nd

St., New York, N. Y., "Mycalex" — C
MYCALEX — Electronic Mechanics, Inc.
MYCALEX — Mycalex Corp. of America
NATIONAL VULCANIZED FIBRE CO., Wilmington,

Del., "Phenolite"— F, P

New HICKOK

DYNAMIC MUTUAL
CONDUCTANCE TUBE
TESTER with readings
in MICROMHOS!

MODEL 51-X

Tests — All types of tubes, including Loktol,
50 volt, ballast and Pilot Lamps.

Measures — Micromhos, A.C. & D.C. Volts,
Ohms, Milliamperes, Capacity, Induct-
ance, Output and Decibels.

Special Features — Patented uniform single
scale for indicating A.C. and D.C. Voltages;
Electronic (not copper oxide) Rectifiers
eliminate burnt out rectifiers; positive noise
test to demonstrate noisy tubes.
Tester indicates "Good," "Replace," "Doubt-
ful" as well as readings in Micromhos. Re-
member, it is not Dynamic Mutual Con-
ductance unless it reads in Micromhos.
Mail the Coupon for complete catalog of
Hickok Radio Testing Equipment.

HICKOK

ELECTRICAL INSTRUMENT CO.

CLEVELAND, OHIO

HICKOK ELECTRICAL INSTRUMENT CO.,
10486 Dupont Ave., Cleveland, Ohio

Gentlemen: Please send your catalog to
Name

Address
City....

State.

OH MOID— Wilmington Fibre Specialty Co.
PHENOLITE— National Vulcanized Fibre Co.
POLYSTYRENE— Bakelite Corp.
THE RICHARDSON CO., 2738 Lake St., Melrose

Park, Chicago, 111., "Insurok" — PL
SACKHEIM BROS. CORP., 215-219 W. Illinois St.,

Chicago, I1L— F, P, T, VC
SPAULDING FIBRE CO., INC., 310 Wheeler St,

Tonawanda, N. Y., "Spauldite." "Armite,"

"Spauldo" — F, P
SPAULDITE— Spaulding Fibre Co., Inc.
SPAULDO — Spaulding Fibre Co., Inc.
STUPAK0FF LABORATORIES, INC., 662T Hamilton

Ave., Pittsburgh, Pa. — C
SUPERIOR INSULATING TAPE CO., 3100 Lambdin

Ave., St. Louis, Mo. — Friction Tape, Rubber Tape

SYNTHANE CORP., Highland Ave., Oaks, Pa,,
"Synthane" — PL

TILT0N ELECTRIC CORP.. 15 E. 26th St., New
York, N. Y— T

TURBO— William Brand & Co.

UNIVERSAL MOLDING CO., 16th & Vermont Sts.,
San Francisco, Calif. — PL

WESTINGHOUSE ELECTRIC & MFG. CO., East
Pittsburgh, Pa. — PL

WILMINGTON FIBRE SPECIALTY CO.. Wilmington.
Del.. "Fyberoid," "Ohmoid" — F, PL

LABORATORY & PRODUCTION
TEST EQUIPMENT

-(2)~Qy~^*^-

Bridges B

Condenser specialties C

Field strength meters F

Frequency measuring devices ■ FM
Frequency standards . . . . FS

Inductance specialties L

Interference locators I

Meters (laboratory type) . . . M

Microvolters MV

Oscilloscopes O

Resistance specialties R

Sound level meters SL

Standard signal A.F. gen. . ■ SA
Standard signal R.F. gen. ■ ■ ■ SR
Vacuum tube volt meters . . . VT
Wave analyzers WA

ACOUSTIC CONSULTANTS, INC., 1270 Sixth Ave..
New York, N. Y., "Phonometer" — SL

AMERICAN COMMUNICATIONS CORP., 1650 Broad-
way, New York, N. Y.. "American" — I

VICTOR J. ANDREW, 7221 S. Francisco Ave., Chi-
cago, HI.— C, FM, FS, L, B, SA

ASSOCIATED RESEARCH, INC., 16 N. May St..
Chicago, 111.— B, M

BENDIX RADIO CORP., 60 E. 25th St.. Chicago.
111.— F, FM, FS, I, O, SL, SA. SB

B00NT0N RADIO CORP., P.O. 314, Boonton, N J..
"Q Meter," "QX Checker"— M. SA, SR

WM. W. L. BURNETT RADIO LABORATORY, 4814
Idaho St., San Diego, Calif. — FM, FS

CINEMA ENGINEERING CO., 7606 Santa Monica
Blvd., Hollywood. Calif., "Cinema" — B, C, FM,
FS, L, R, SL, SA. SR, VT

CLAROSTAT MFG. CO., 285 N. 6th St., Brooklyn.
N. Y.— R

CLOUGH-BRENGLE CO., 2815 W. 19th St., Chicago,
HL, "C-B"— B, FM, MV, 0, SL, SA, SR, VT, WA

COLLINS RADIO CO., 2920 First Ave., Cedar Rapids,

Iowa— FM, 0. SL, WA
DAVEN CO., 158 Summit St., Newark, N. J— B,

M, R, SL
TOBE DEUTSCHMANN CORP., Canton, Mass.. "Tobe"

— B, C, I
ALLEN B. DU MONT LABORATORIES, INC., 532

Valley Rd., Upper Montclair, N. J., "Du Mont"

—0
ELECTRONIC DESIGN CORP., 164 N. May St..

Chicago, HI., "Meek"— MV, 0, SL, VT

EXCEL— Hickok Electrical Instrument Co.

Electrical
Insulations

A complete line of electrical
insulations for radio and
related uses, including:—

LAMICOID
FOR INSULATION

Laminated-Bakelite Fabricated Parts,
No. 6028 XXXP Low Power Factor
Punching Stock for high frequensy radio
parts.

LAMICOID
FOR DIALS AND PANELS

Translucent Dial Stock— for printing or
engraving. Black and White Engraving
Stock for panels, nameplates, etc.
Graphic Lamicoid with permanent
printed i\ ni-h for charts, wiring dla-
grams, etc. Write for Prices.

MICA FOR CONDENSERS
AND RADIO TUBES

Condenser Mica of highest electrical
strength, low loss for high frequency
condensers. We can furnish Mica split
to thickness on fabricated pattern. Write
for Price Bulletin 92M which describes
Mica in detail.

MICA SHAPES

Fabricated from Domestic or Imported
Mica of all descriptions . . . punched and
machined to exceptionally accurate di-
mensions. Also raw Mica.

MICANITE

. . . built-up Mica insulation. Plates, Fab-
ricated Parts, Barrier Insulations, Tubes,
Washers, Tapes, etc. Write for Price
Bulletin No. 106.

EMPIRE TAPE

Varnished Cloths, Tapes, (seamless, bias
or out lengthwise) Silks and Papers,
Tubing, etc. Write for Priee Bulletin
No. 110.

MICO INSULATIONS

Varnished Cambric Tubing, Saturated
Sleeving, Varnishes, Untreated Papers,
Linen and Silk Tapes, etc. Write for
Price Bulletin.

GLASS INSULATIONS

Write for information and samples of
the new Varnished Fibreglas Cloth,
Fibreglas and Mica sheets and untreated
Fibreglas tapes and sleevings.

Mica
Insulator Co.

200 Varick St., New York ; 542 South Dearborn St.,
Chicago; 1276 W. 3rd St., Cleveland. Branches at
Birmingham, Boston, Cincinnati, Los Angeles,
San Francisco, Seattle. Canada: Montreal, Toronto.

MARCH, 7939

** 7k* *<*

RIDER CHANALYST

Itk

RACK and PANEL
ASSEMBLY

x- >*"■

l»'lSl

Brings All the Leads Out in
Front — Adding Still Further
to Time Saved by Chanalyst.

SERVICEMEN

Continue to Praise

"I find the Chanalyst indispensable.
Every time I use it, it seems to be-
come more valuable." — A. Coppotelli,
A. C. Radio Service. Chicago Heights.
"Your Chanalyst advertisements ex-
press my sentiments exactly. I find
the instrument indispensable in my
work, and use it constantly." — I.
Rosenberg. Custom Radio & Elec.
Lab.. New York City.
"Wouldn't be without the Chanalyst
—INDISPENSABLE!"— Carr & Pheil.
Chambersburg. Pa.
"A terrific weapon against those
'hard to isolate' troubles." — Bruce N.
Carpenter. New Castle. Del.
"Going through a set with the
Chanalyst is almost instantaneous.
With . . . (another instrument I have)
I took all day and was angry before
I was through." — Lester I. Berry,
Newark, Ohio.

"I am very pleased with my Chan-
alyst. It has helped me find the
trouble in several tough jobs already
and I am learning new uses for it
every day." — Carl J. Anderson, Mari-
etta, Ohio.

The rack and panel is
sold separately at $15.
The price of the Chan-
alyst complete with
rack and panel is
$122.50
■ (without, $107.50)

l0?»n|0M"

plRf0W^<*

The RIDEH

Chanalyst

SERVICE INSTRUMENTS, INC.

404 Fourth Avenue, New York City

Foreign Division— 147 W. 45th Street, N. Y.,

Cables — -"Servian"

LABORATORY & PRODUCTION
TEST EQWPMENT-Cont'd

FANSTEEL METALLURGICAL CORP., 46 W. 22nd

St., No. Chicago, HI.— C
FERRIS INSTRUMENT CORP., Boonton Ave., Boon-
ton, N. J., "Ferris"— F, FM, FS, I, MV, SR
GENERAL ELECTRIC CO., Lynn, Mass— M
GENERAL ENGINEERS, 2241 Garrett Rd., Upper

Darby, Pa., "General Engineers" — F, FM, FS
GENERAL RADIO CO., 30 State St., Cambridge,

Mass., "G-R"— B, C, FM, FS, L, M, MV, R, SL,

SA, SR, VT, WA
G-R — General Radio Co.

HARDWICK & HINDLE, INC., 40 Herman St., New-
ark, N. J.— R
HICK0K ELECTRICAL INSTRUMENT CO., 10514 Du-

pont Ave., Cleveland, Ohio, "Excel," "Hickok"—

F, FM, M, 0, SL, SA, SR, VT
INTERNATIONAL RESISTANCE CO., 401 N. Broad

St., Philadelphia, Pa. — R
LAMPKIN LABS., Bradenton, Fla — FM
LEEDS & NORTH RUP CO., 4970 Stenton Ave.,

Philadelphia, Pa.— B. F. R
MARINE RADIO CORP., 91 Third Ave., New York,

N. Y., "Marine"— 0
MECK — Electronic Design Corp.
MONARCH MFG. CO., 3341 Belmont Ave., Chicago,

111., "Monarch"— B, M, MV, SR, VT
MUTER CO., 1255 S. Michigan Ave., Chicago, 111.,

"Muter"— B, R
PHONOMETER — Acoustic Consultants, Inc.
POTTER C0NDENS0R CO., 1950 Sheridan Rd.,

North Chicago, 111.— C
PREMIER CRYSTAL LABS., INC., 55 Park Row,

New York, N. Y.— FM, FS
QX CHECKER— Boonton Radio Corp.
Q METER — Boonton Radio Corp.
RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,

"RCA"— B. C, F, FM, FS, M, MV, 0. R. SL,

SA, SR, VT, WA
SERVICE INSTRUMENTS, INC., 406 4th Ave., New

York, N. Y.— M, VT
SHALLCR0SS MFG. CO., 10 Jackson Ave., Colling-

dale. Pa., "Shallcross" — B, M, R
SUPREME INSTRUMENTS CORP.. 414 Howard St.,

Greenwood, Miss., "Supreme" — B, 0
TECH LABORATORIES. 7 Lincoln St., Jersey City,

N. J., "Tech Lab"— B, R, SL
TELEVIS0 CO., 341 N. Pulaski Rd., Chicago, 111.—

FM, SA, VT
TO BE — Tobe Deutschmann Corp.
TRIPLETT ELECTRICAL INSTRUMENT CORP., 122

Main St., Bluffton. Ohio, "Tripletf— 0, M
TRIUMPH MFG. CO.. 4017 W. Lake St.. Chicago,

111.— MV. 0, SR
UNITED CINEPHONE CORP., 43-37 33rd St., Long

Island City, N. Y., "United Cinephone Research

Labs."— SL
UNITED MOTORS SERVICE, W. 3044 Grand Blvd.,

Detroit, Mich., "United Motors" — 0
WESTINGHOUSE ELECTRIC CO., Orange St., Newark,

N. J.— M
WESTON ELECTRICAL INSTRUMENT CORP., 614

Frelinghuysen Ave., Newark, N. J. — SL, M, VT
WRIGHT'S ELEC. INST. LAB., Reed College. Port-
land, Ore.— M

ELECTRONIC AND AMPLIFIED
MUSICAL INSTRUMENTS

Bells and chimes BC

Organs O

Pianos P

String instruments S

Tuning devices T

ALOHA MUSICAL INSTRUMENT* PUBLISHING CO.,
7947 S. Halsted St., Chicago, 111.— S

ANSLEY RADIO CORP.. 240 West 23rd St., New
York, N. Y.— P

C. G. CONN, LTD., Elkhart, Ind. — T

DAVITT & HAUSER MUSIC CO., 304 Main St.,
Cincinnati, Ohio — S

ALLEN B. DUMONT LABORATORIES, INC., 2 Main
Ave., Passaic, N. J. — T

ELECTRO STRING INSTRUMENT CORP., Los An-
geles, Calif.— S

ELECTRONIC SOUND & MUSIC CO., 42 Third Ave.,
New York, N. Y.— S

EPIPHONE, INC., 142 W. 14th St., New York, N. Y.
— S

EVERETT PIANO CO., South Haven, Mich.— 0

FRETTED INSTRUMENT MFRS., INC., 87 Ferry St.,
Jersey City, N. J. — S

VO LT METER -
OHMMETER

WITH EXTREMELY

tVicfe /<anqei

Unlike anything heretofore available
to the servicing industry, it fills a
long-existing gap.

THE VOLTMETER

Measures from 0.05 to 5000 volts.
Input resistance constant at 16 meg-
ohms on all ranges.
"Contact potential" error eliminated.
No readjustment of zero when chang-
ing ranges.

Measures d-c operating and control
voltages under dynamic conditions
with r-f and a-f present — input capac.
itance 1 mmf.

Checks oscillator operation up to and
including ultra-high frequencies.
Will indicate plus or minus voltages
without switching leads.

THE OHMMETER

Measures from 0.1 ohm to 1 billion
ohms.

Low voltage across resistance
being checked — from 0.030 volt across
0.1 ohm to a maximum of 3 volts
across 1000 megohms.
Convenience of operation — one scale
— one zero adjustment — does not re-
quire readjustment when range is
changed.

7 overlapping ranges for maximum
accuracy and
ease of reading.
Stable zero.
Finest parts —
high safety fac-
tors — protected
againsthumidity.

The RIDER

SIMO f 0*

MM)

UttRtfURt

VoltDhmyst

SERVICE INSTRUMENTS, INC.

404 Fourth Avenue, New York City
Foreign Division— 147 W. 45th Street, N. Y.,
Cables — "Servicin"

RADIO YEAR BOOK

GIBSON, INC., 219 Parsons St., Kalamazoo, Mich.— S
GULBRANSEN CO., 816 North Kedzie Ave.. Chicago.

HI— 0
SEBASTIAN GUNDLING & SON. Lincoln Highway,

West, Lancaster, Pa. — 0
HAMMOND INSTRUMENT CO., 2915 North Western

Ave., Chicago, 111. — 0
HARDMAN, PECK & CO., 524 West 52nd St., New

York, N. Y.— P
HARMONY CO., 1742 N. Lawndale Ave., Chicago. 111.

— S
FRANK HOLTON CO., Elkhorn, Wis.— P, S

KAY MUSICAL INSTRUMENT CO., 1640 Walnut St..

Chicago, 111.— S
KRAKAUER BROS., Cypress Ave., New York, N. Y.

— P
MAAS ORGAN CO., 3015 Casitas Ave., Los Angeles,

Calif.— BC
MIESSNER INVENTIONS, INC., Millburn, N. J.—

0. P
NATIONAL OOBRO CORP., 400 So. Peoria St.. Chi-
cago, 111. — S
PACKARD BELL RAD.IO CO.. 1320 So. Grand Blvd.,

Los Angeles, Calif. — P
PEERLESS RADIO CO., 1064 Uewey St., Rochester,

N. Y.— 0
RADIO CORP. OF AMERICA, Camden, N. J.— BC
RANGERTONE, INC., 201 Verona Ave., Newark, N. J.

— BC, 0
FRANCES J. RYBECK CO., New York, N. Y.— BC
OSCAR SCHMIDT INTERNATIONAL, 87 Perry St.,

Jersey City, N. J.— S
SLINGERLAND BANJO & DRUM CO., 1325 W. Belden

Ave., Chicago, 111. — S
SOUND PROJECTS CO., 3140 W Walton St., Chi-
cago, Dl. — S, BC
STORY & CLARK PIANO CO., 64 E. Jackson Blvd..

Chicago, 111. — P
TRANSFORMER CORP. OF AMERICA, 69 Wooster

St., New York, N. Y.— BC
VALAUDIAN CO., Oak Park, I1L— 0
VEGA CO., 155 Columbus Ave.. Boston, Mass. — S
VIVI-TONE CO., 6321 Gratiot Ave., Detroit, Mich.

— P, S
VOLU-TONE CO., 226 N. Main St., Lob Angeles,

Calif.— S
WESTERN STATES WHOLESALE MUSIC CORP., 4333

Brooklyn, Seattle, Wash. — S
WINTER & CO., 849 E. 141st St.. New York, N. Y.

— P
RUDOLPH WURLITZER MFG. CO.. North Tonawanda,

N. Y.— P

MICROPHONES

Carbon CAR

Condenser CON

Contact CT

Crystal CRY

Dynamic DYN

Home broadcasting HB

Velocity VEL

Accessories ACC

Connectors . CTR

Stands STD

Springs SPR

(See "SOUND SYSTEMS" for additional
sources of supply)

4KRAD PRODUCTS CO., 362 Wooster Ave., Akron,

Ohio— CON
ALDEN PRODUCTS CO., 71S Center St., Brockton.

Mass. — CTR
AMERICAN MICROPHONE CO., INC., 1915 Western

Ave., Los Angeles, Calif., "American" — CAR, CON,

CRY, DYN, BTD, ACC
AMERICAN PHENOLIC CORP.. 1250 W. Van Buren

St., Chicago, I1L — CTR
AMPERITE CO., 561 Broadway, New York, N. Y.,

"Amperite" — VEL, STD, CT
AMPLION PRODUCTS CORP., 38 W. 21st St..

New York, N. Y.— CAR
ASTATIC MICROPHONE LABORATORY, 830 Market

St., Youngstown, Ohio, "Astatic"— CRY, STD
ATLAS SOUND CORP., 1451 39th St., Brooklyn,

N. Y., "Atlas Velvet Action"— ACC, CTR, STD, SPR
■ELFONE — Bell Sound Systems, Inc.
■RUNO LABORATORIES, INC., 30 W. 15th St., New

York, N. Y., "Bruno," "Velotron"— VEL. ACC,

CTR, STD
BRUSH DEVELOPMENT CO., 33rd St. & Perkins Ave..

Cleveland, Ohio, "Brush" — CRY, ACC. STD. CT

MIESSNER

The Name that is

SYNONYMOUS with

Usherinq in a vast
new market for
the radio merchant

ELECTRONIC

MUSICAL
INSTRUMENTS

THE Electronic Musical Instrument is a thing of infinite superiority. Whether
piano, organ, or fretted instrument, it is being widely acclaimed. People are
buying. New markets are opening up. The days of the Electronic instrument
is here!

This new musical vogue is due in a large measure to the numerous MIESSNER
patents under which leading manufacturers are producing instruments finer
than any known heretofore.

What Toscanini has given to orchestration — what Paderewski has given to
expression, Miessner has given to TONE-POWER and TIMRRE, with totally
new qualities of tone variation, fullness and brilliancy.

Through electronic actuation and control, the Miessner principles have brought
a musical quality unbelievable until actually heard. Attracting the highest
type of prospect, it gives the dealer PRESTIGE as well as sales advantage.

Typical product of a Miess-
ner Licensee — Krakauer
Brothers "Super Electone,"
combining electronic piano,
organ, radio and phono-
graph.

•

Write to any of the licensed
manufacturers listed below
<ind begin selling Electronic
instruments.

MANUFACTURERS LICENSED UNDER
MIESSNER PATENTS

Piano Manufacturers (listed alphabetically)

Analey Radio Co., Bronx Blvd. & 238th St..

New York City
Gulbransen Company, 816 N. Kedzie Ave.,

Chicago
Hardman, Peck & Co., 33 W. 57th St..

New York City
Krakauer Bros., Cypress Ave. and 136th

St., New York City
Packard Bell Radio Co., Los Angeles, Cat.
Story & Clark Piano Co., 64 E. Jackson

Blvd., Chicago
Winter & Co., 849 E. 141st St., New York City

Foreign

August Forster Piano Fabrik, Germany
Mason & Risch, Ltd., 642 King St., West,

Toronto 2, Canada
Sherlock Manning Co., Clinton, Ontario

Organ Manufacturers

Everett Piano Co. (The Orgatron), South

Haven, Mich.
Sebastian Gundling & Sons, Lancaster, Pa.

Fretted Instrument Manufacturers
Epiphone, Inc., 142 W. 14th St., New York

MIESSNER PATENTS ON ELECTRONIC
MUSICAL INSTRUMENTS

Pttent No.

1.680.112
1.886.687
1.906,607
1,912,293
1.915.858

1,815,859
1.915,860
1.915,861
1,929.027
1.929,028
1,929,029
1.929,030
1.929.031
1.929,932
1.933.294
1,933,295
1.933,296
1,933,297
1,933,298
1.933,299
1.961.159
1,963,668
1,977,832
1.979,633
1,992,438
2.001,391
2,001,392
2.007,302
2,027.073
2,027,074
2,027,075
2,033,440
2,045,917
2,071,649
2,088,205
2,138,500
2,140,025

Inventor
Bone. E. T.
Jacobs, C. T.
Jacobs

Miessner, B. F.
Miessner

Miessner & Jacobs

Jacobs

Miessner

Miessner & Jacobs

Jacobs

Miessner

Jacobs

Miessner

Vierling, O.

Miessner

Miessner & Jacobs

Miessner

Vierling

Miessner

Jacobs

Miessner

Jacobs

Miessner

and numerous pending patents.

Date Issue*
AjJrtl 13. 192t
November 8, 193S
May 2, 1933
May 39, 1933
June 27, 1933
June 27, 1933
June 27, 1933
June 27, 1933
October 3, 1933
October 3, 1933
October 3, 1938
October S, 1933
October 3, 1933
October 3, 1933
October 31. 1933
October 31, 1933
October 31. 1933
October 31, 1933
October 31, 1933
October 31, 1933
June 5, 1934
June 19, 1934
October 23, 1934
November 6, 1934
February 26, 1935
May 14, 1935
May 14, 1935
July 9. 1935
January 7, 1936
January 7, 1936
January 7, 1936
March 10, 1936
June 30, 1936
February 23, 1937
July 27, 1937
November 29, 1938
December 13. 1938

Miessner Inventions, Inc.

MILLBURN. NEW JERSEY-

MARCH, 1939

vw\

UNI-DIRECTIONAL

PICK-UP FIELD
COMPENSATOR UP

It' 6 ^VELOCTY

it'-i a DYNAMIC

UN-D RECT ONAL

NON-DIRECTIONAL

HIGH OR LOW P TCH

By moving up the Acoustic
Compensator, you change
the Amperite Velocity Mic-
rophone to dynamic oper-
ation — without peaks. At
the same time you reduce
the back pickup, making
the microphone practi-
cally UNI-DIRECTIONAL.

With the Acoustic Com-
pensator down, the micro-
phone is BI-DIRECTIONAL
. . . 120 degrees front and
back without frequency
discrimination. Rotating
the microphone until it
parallels the ceiling makes
the microphone NON- DIRECTIONAL.

THE ACOUSTIC COMPENSATOR

regular feature of these models: RBHk (hi-
imp); RBMk (200 ohms) LIST $42.00. RSHk
(hi-imp); RBSk (200 ohms) LIST $32.00

PICK-UP FIELD
COMPENSATOR DOWN

Sell Contact Mikes
to Professional and
Amateur Musicians

New high output model can be used in the home.

Professional musicians are buying Amper-
ite "Contact Mikes" because "it makes an
ordinary violin sound like a Strad". Now
amateurs, too, can benefit by the "Contact
Mikes". The new HIGH OUTPUT MODEL
SKH can be used in the home. It operates
on most radio sets made since 1935. It is
connected to the phono-input, or to grid
ground of detector tube, or across the vol-
ume controL Note new clamp, making the
mike easy to attach to guitars, ukes, etc.

MODEL SKH (hi-imp); SKL (200 ohms) $12.00
LIST. Any number up to 5 SKH's can be put
in parallel and fed into one input. NEW
FOOT PEDAL $12.00 LIST. CLAMP for Con-
tact Mike, $1.00 LIST.

FOR TOP-NOTCH QUALITY
ANO AMAZING RUGGEDNESS,
AT LOW COST

f SPECIFY MODEL RAH (OR RALj

Here's why this popular Amp
erite Velocity Microphone
leads the low-price field: (1) it
is excellent for both speech
and music; (2) has flat response
without undesirable peaks; (3) reduces
feedback; (4) stands up under rain, wind,
heat, and rough handling . . . Frequency
range 60 to 7500 CPS. Output, —68 db.
MODEL RAH (hi-imp.), with 12' of cable;
MODEL RAL (200 ohms) with 8' of cable.
__ $22.00 LIST

Write for Complete Illustrated Bulletins
and Valuable Sales Helps

561 BROADWAY. M. Y.

Cobb Adcbasc Alkem. Now York

Amperite (g.

AMPERITE . cXUi

^ MICROPHONES

MICROPHONES-Confd

BULLET — Transducer Corp.

CANNON ELECTRIC DEVELOPMENT CO., 420 West

Ave. 33, Los Angeles, Calif. — ACC, CTB
CARRIER MICROPHONE CO., 439 S. La Brea Ave.,

Inglewood, Calif., "Carrier" — DYN, VEL
CINEMA ENGINEERING CO., 7606 Santa Monica

Blvd., Hollywood, Calif., "Cinema" — CON, STD
C0L0RT0NE ACOUSTIC DEVICES, South Bend, Ind.

—ACC
DICTOGRAPH PRODUCTS CO., INC., 580 Fifth Ave.,

New York, N. Y., "Dictograph"— CAR
EASTERN MIKE-STAND CO., 56 Christopher St .

Brooklyn, N. Y., "Eastern"— STD
ELECTRO-VOICE MFG. CO., 324 E. Colfax Ave.,

South Bend, Ind., "Electro-Voice"— CAR, VEL,

ACC, CTR, STD, DYN, SPR
ELLIS ELECTRICAL LABORATORY, INC., 3502

Wesley Ave., Berwyn, 111., "EUis Microphones" —

CAR, ACC, CTR, DYN, STD
ICA — Insuline Corp. of America
INSULINE CORP. 6F AMERICA, 25 Park Place,

New York, N. Y., "ICA"— CAR
KAAR ENGINEERING CO., 619 Emerson St., Palo

Alto, Calif., "Kaar" — CAR
KELLOGG SWITCHBOARD & SUPPLY CO., 6650 S.

Cicero Ave., Chicago, 111., "Kellogg"— CAR
PHILM0RE MFG. CO., 113 University Place., New

York, N. Y., "Philmore"— HB
PILGRIM ELECTRIC CORP., 138 5th Ave., New

York, N. Y., "Major Edward Bowes" — HB
RACON ELECTRIC CO., INC., 52 E. 19th St.. New

York, N. Y., "Racon"— DYN
RADIO RECEPTOR CO., INC., 251 W. 19th St., New

York, N. Y., "Radio Receptor" — DYN
RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,

"RCA"— CAR, CON, DYN, VEL, ACC, CTR, 6TD
REMLER CO., LTD., 2101 Bryant St., San Francisco.

Calif.. "Remler"— CRY, ACC, CTB, STD
SETCHELL-CARLSON MFG. CO., INC., 2233 Uni-
versity St., St. Paul, Minn. — CTR
SHURE BROS., 225 W. Huron St., Chicago, Di,

"Shure" — CAR, CON, CRY, DYN, ACC. STD
STR0MBERG-CARLS0N TELEPHONE MFG. CO., 100

Carlson Rd., Rochester, N. Y. — CAR
TURNER CO., Cedar Rapids, Iowa, "Turner" — CRY
UNITED CINEPHONE CORP., Sound Equipment Div.,

43-37 33rd St., Long Island City, N. Y., "United

Cinephone" — VEL
UNITED SOUND ENGINEERING CO., 2233 Univer-
sity Ave., St. Paul. Minn., "U.S.E."— CAR. ACC,

STD

UNIVERSAL MICROPHONES CO., 424 Warren Lane,

Inglewood, Calif., "Universal" — CAR, CON, CRY

DYN, VEL, ACC. STD
U.S.E. — United Sound Engineering Co.
VEL0TR0N— Bruno Laboratories Inc.
WESTERN ELECTRIC CO., 195 Broadway, New York.

N. Y., "Western Electric"— CAR. CON, DYN. ACC,

CTR. STD

PAINT, CEMENT & WAX PRODUCTS

*&&

Cement C

Enamels E

Insulating Compounds ... I

Lacquers L

Paint P

Varnish V

Wax W

ALDEN PRODUCTS CO., 715 Center St., Brockton,

Mass. — C, E, L
AMERICAN PHENOLIC CORP., 1250 W. Van Buren

St., Chicago, 111., "Amphenol"— -C
AM PHENOL — American Phenolic Corp.
BAKELITE CORP., 247 Park Ave., New York, N. Y.,

"Bakelite"— C, E, L, V
CARR0N MFG. CO., 415 S. Aberdeen St.. Chicago,

HI.— C, E, I
CELLULOID CORP., 10 E. 40th St.. New York, N. Y.

— C
CROLITE— Henry L. Crowley & Co.
HENRY L. CROWLEY & CO., 1 Central Ave., West

Orange, N. J., "Crolite" — C
GENERAL CEMENT MFG. CO., 611 Lincoln Are..

Rockford, LI., "G-C— C, E, L, P, V, W
G-C — General Cement Mfg. Co.

WAXES

AND

COMPOUNDS

FOR

INSULATION & WATERPROOFING

of ELECTRICAL and RADIO
COMPONENTS

BRUSH

HIGH LEVEL
MIKE

MODEL HL — Diaphragm type,
with level minus 46 db., and good
response. Vari-Swiv mounting and
satin chrome finish. An excellent
all-round Mike.

•

THE BRUSH DEVELOPMENT CO.

3313 Perkins Ave., Cleveland, Ohio

RECORD

CARRYING

CASES

JuH What Every-
body Want*!

Yes, everyone who uses
or handles records. Mu-
sic shops, radio dealers,
recording studios, port-
able sound, broadcast
and audition w o r k —
even homes, camps and
cottages. Wherever records must be carried or fre-
quently moved, these cases solve a big problem at
a small cost. Cases are made of steel, felt-lined,
black crackle finish. Protect records from Breakage,
Dust and Wear — Fits in small space for storage.

RC-1 holds 55 10-in. records $3.50 List

RC-3 holds 90 10-in. records $4.50 List

Order direct from
CHICAGO SOUND SYSTEMS CO.

200 E. Illinois Street Chicago, III.

RADIO YEAR BOOK

GENERAL ELECTRIC CO., 1285 Boston Ave.. Bridge-
port, Conn., "G E" — C

G.E. — General Electric Co.

HARDRAY, INC, 524 W. Broadway, New York,
N. Y. — Conductive silver paint

INSULATION MANUFACTURERS CORP., 565 W.
Washington Blvd., Chieago, 111. — V, W

INSULINE CORP. OF AMERICA, 25 Park Place, New
York, N. Y.— C, L

J.F.D. MFG. CO., 4111 Ft. Hamilton Pkwy., Brook-
lyn, N. Y.— C

MAAS & WALDSTEIN CO., 438 Riverside Ave., New-
ark, N. J.— C, E, I, L, P, V

MICA INSULATOR CO., 200 Varick St., New York,
N. Y., "Jlico"— V

ROXALIN FLEXIBLE LACQUER CO., Elizabeth, N.J.
— E, L, P

ZOPHAR MILLS, INC., 112-130 26th St., Brooklyn,
N. Y.— C, W, I

RECORD PLAYING &
RECORDING EQUIPMENT

Automatic record changers . ARC

Discs (blank) D

Electric phonographs EL

Motors (record playing) . . . M

Needles N

Needles (cutting) CN

Pick ups (crystal) PC

Pick ups (magnetic) PM

Records (phonograph) R

Record albums RA

Record cabinets RC

Recording machines RM

Record player attachments . . RP
Transcription record players • TR
Turntables (record playing) . . TT
Wireless record players . W

H. W. ACTON CO., INC., 370 7th Ave., New York,
N. Y., "Actone"— CN, N

ALLIED RADIO CORP., 833 W. Jackson Blvd., Chi-
cago, EL, "Knight" — EL, RP, TR, W

ALLIED RECORDING PRODUCTS CO., 126 W. 46th
St., New York, N. Y. — D, CN, RM

AMERICAN RECORD CORP., 1776 Broadway, New

York, N. Y.— B, N
AMPLEX RADIO CORP., 240 W. 23rd St., New

York, N. Y— EL, RP
ANSLEY RADIO CORP., 240 W. 23rd St., New

York, N. Y., "Ansley Dynaphone" — EL, RP, TB
ASTATIC MICROPHONE LABORATORY, 830 Market

St., Youngstown, Ohio, "Astatic" — PC
AUDAK CO., 500 Fifth Ave., New York, N. Y.,

"Audax" — PM

AUDAX— Audack Co.
BELFONE— BeU Sound Systems, Inc.
BELL RADIO & TELEVISION, 115 E. 46th St., New
York, N. Y., "Bell"— RP, W

BELL SOUND SYSTEMS, INC., 61 E. Goodale St.,

Columbus, Ohio, "Belfone" — ABO, EL, RP, TR, TT
BLUEBIRD— RCA Mfg. Co.
DAVID BOGEN CO., INC., 663 Broadway. New York,

N. Y.— ARC, EL, M, PC, PM, RM, TT
BRUNSWICK RECORD CORP., 1776 Broadway, New

York, N. Y., "Brunswick," 'Terfect," "Vocalion"

— N, B

BRUSH DEVELOPMENT CO., 33rd & Perkins Ave.,
Cleveland, Ohio, "Brush" — PC

CAPEHART CORP., E. Pontiac St., Ft. Wayne, Ind.,

"Capehart" — ABC, EL
CHAMPION — Decca Becords, Inc.
CHICAGO NOVELTY FURNITURE CO., 1750-60 N.

Campbell Ave., Chicago, 111. — BC
CHICAGO SOUND SYSTEMS CO., 200 E. Illinois St.,

Chicago, 111.— EL, BC, RP, TR, W
CHICAGO SOUND SYSTEMS CO., 200 E. Illinois St.,

Chicago, I1L — Record carrying cases
CLARION — Transformer Corp. of America
COLUMBIA PHONOGRAPH CO., 1776 Broadway, New

York, N. Y., "Columbia"— N, B
CONTINENTAL RADIO & TELEVISION CORP., 3800

W. Cortlandt St., Chicago, 111.— W
DECCA RECORDS, INC., 50 W. 57th St., New York,

N. Y., "Decca," "Champion" — B, EL, N

DIEHL MFG. CO., Elizabethport, N. J.. "Diehl"— M

DYNAPHONE— Ansley Radio Corp.

ELECTRO ACOUSTIC CO., 2131 Bueter Rd., Ft.
Wayne, Ind.— BL, BC, RP, TR, TT

ELECTROTONE— Harris Mfg. Co.
ESPEY MFG. CO., INC., 67 Irving PI., New York,
N. Y.— EL

FAIRCHILD AERIAL CAMERA CORP., 88-06 Van

Wyck Blvd., Jamaica, L. I., N. Y., "Fairchild"

D, CN, PC, RM
GALVIN MFG. CORP., 4545 Augusta Blvd., Chicago,

I1L, "Motorola" — W
GARRARD SALES CORP., 17 Warren St., New York.

N. Y., "Garrard"— ABC, EL, M
GENERAL COMMUNICATION PRODUCTS, INC., Lex-
ington Ave. at Vine, Hollywood, Calif. — TB
GENERAL ENGINEERS, 2241 Garrett Rd.. Upper

Darby, Pa., "General Engineers"— EL, TR
GENERAL INDUSTRIES CO., 3537 Taylor St.,

Elyria, Ohio — ABC, M, TT
GENERAL PRODUCTS CO., 1801 Fannin St., Hous-
ton, Texas— BA, BC, RP, TR, TT
HARDRAY, INC., 524 W. Broadway, New York, N.Y..

"Hardray"— ARC
HARRIS MFG. CO., 2422 W. 7th St., Los Angeles,

Calif., "Harris Electrotones"— N, RC, RP, TR
HETRO ELECTRICAL INDUSTRIES, INC., 4611

Ravenswood Ave., Chicago, 111., "Hetro" — EL, PC,

PM, TT
JACKSON PRODUCTS CO., 504 Griffin St.. Dallas,

Texas — BP
KNIGHT— Allied Radio Corp.
LOWELL NEEDLE CO., INC., Putnam, Conn.— N
MAGNA — Unit Beproducers Mfg. Co.
MAJESTIC RADIO & TELEVISION CO., 2600 W.

50th St., Chicago, HI.— W
MANUFACTURERS SCREW & SUPPLY HOUSE, 215

W. Illinois St., Chicago, HI.— M
MARCONIPHONE, INC., 679 Madison Ave.. New

York. N. Y— EL
MILES REPRODUCER CO., INC., 812 Broadway,

New York, N. Y., "Sound-on-Film"— ABC, CN, D,

EL, M, N, PC, PM, B, RA, RC, RM, RP. TR. TT
MOTOROLA— Galvin Mfg. Corp.
OPERADIO MFG. CO., 13th & Indiana Sts.. St.

Charles, TJL, "Operadio"— TT
PACENT ENGINEERING CORP., 79 Madison Ave..

New York, N. Y., 'Tacent"— EL, PM, TT

MUSICAL TOWERS

BELFRY CHIMES • CARILLON

Biggest PROFIT opportunity yet for
established organizations specializing
in sound installations. Brand new
field! Market hasn't
been touched! Sell
and service complete
amplifying systems for
tower, belfry chime
installations. NEW
Sunco MASTER finest
quality custom - built
instrument made.

Broadcasts chimes, organ recordings.
Powered for 2, 6 and 12 mile di-
ameter coverage. Used as P.A. unit
indoors. Automatic record changer.
Plays 10" and 12" records mixed,
either 78 or 33 R.P.M. We furnish
everything — speakers, accessories, in-
stallation directions. Sales help.
Special low-noise records for church
service on acetate discs. PROTECT-
ED TERRITORY. Be first in this
big profit field. Write today.

SUNDT ENGINEERING COMPANY
4260 Lincoln Ave. Chicago, III.

Se£e&(/seLimU\)Sl$

IVrite for
Qatalo

Fw radio instruments, meters,
transmitters, rectifiers, etc.
FUSE MOUNTING — ALL
KINDS. See your jobber or
write today for catalog and
prices.

LITTELFU5E INCORPORRTED

4260 LINCOLN AVE. CHICAGO. ILL.

NEW PORTABLE PRESTO RECORDER

A PROFIT

BUILDER

FOR STUDIOS

PRESTO MODEL M

• Two 12" dual speed turntables.

• Mixer in recording amplifier permits per-
fect blending of voice, music, sound
effects.

• Steady speed gives good synchronization
with 8mm. or I6mm. moving pictures —
a new market for you.

• High gain amplifier — can be used as a
5-watt public address system.

• Here's a compact dual -turntable re-
corder you can use in your studio — or
pick up and take with you in a hurry for
outside jobs. The new Presto Model M is
the only dual-table machine light enough
to carry — weighs only 62 lbs. complete
— yet with it you can make high-quality
recordings continuously at either 78 or
33} 3 RPM. That means that you can
now record 1 5 or 30 minute programs on
12" records that artists can play back in
their own homes — or dub records in any
quantity easily, profitably. Writefor com-
plete information today.

PRESTO

RECORDING CORPORATION

244 West 55th Street, New York, N.Y.

MARCH, 1939

you too

Can Profit

Selling These

New Lighter CX

Phonograph Motors

TEST out a General Industries Flyer CX
motor. New lighter model, more com-
pact, for portables and table cabinets. Self-
starting induction type. Constant speed —
quickly reached. Fan-cooled, with free ven-
tilation. Sealed oil chamber with ample oil re-
serve. Silent helical-cut gears, fully enclosed.
Patented-drive turntable (not shown), posi-
tively insulates itself.

Order O Specify frequency and voltage

Samofe °' current, and size of turn-

FIv&rCY table. Give this new motor the
' works, in your own case or

cabinet. You'll find it a winner. Catalog
sheet and prices on request.

^General Inmjstteies co..

3938 Taylor Street, Elyria, Ohio

CABINETS and RACKS
for RECORDS

We specialize in racks, tables and cabinets
for the care of phonograph records.
Rack illustrated is 13" x 10". Fits into any
small space. Holds and protects 50 records.
An index card and stickers provide a simple
means of selecting the record you want — in
a jiffy. Is used in thousands of homes.
List $4.00.

We have a complete line of walnut and ma-
hogany cabinets, open or with doors, capaci-
ties from 120 records or 8 albums up to
375 records or 30 albums.

Write for literature and discounts.

Territories Available for

Live Wire Salesmen.

SCHLOSS 8»tk

e'lS

MANUFACTURERS
801 E. 135th Street, New York. N. Y.

RECORD PLAYING &
RECORDING EQUIPMENT-Confd

PAN AMERICAN RECORD CO., 705 So. 1st St.,
Louisville, Ky. — R, RA

PAR METAL PRODUCTS CORP., 35-25 41st St.,
Long Island City, N. Y. — Phono tables for rack
mounting

PEERLESS ALBUM CO., INC., 38 W. 21st St.. New
York, N. Y — RA

PERFECT — Brunswick Record Corp.

PERMO POINT— Permo Products Corp.

PERMO PRODUCTS CORP., 6415 Ravenswood Ave.,
Chicago, I1L, "Permo Point" — N

PHILCO RADIO & TELEVISION CORP., Tioga & C
Sts., Philadelphia, Pa., "Philco" — W

PHONOGRAPH NEEDLE MFG. CO., INC., 42-46

Dudley St., Providence, R. I.— N

POINSETTIA, INC., Pitman, N. J.— CN, D, N, R,
RA, RM

PRESTO RECORDING CORP., 139 W. 19th St., New
York, N. Y., "Presto"— CN, D, EL, N, PM, RM.
RP, TR, TT

B. A. PROCTOR CO., INC., 17 W. 60th St., New
York, N. Y — RM, PC, TR, TT

RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,
"RCA," "Victor," "Bluebird"— ARC, CN, D, EL.
M, N, PC, PM, R, RA, RC, RM, RP, TR, TT, W

RADIO ENGINEERING & MFG. CO., 26 Journal Sq.,
Jersey City, N. J., "Remco" — TR

RADIOTONE, INC., 6103 Melrose Ave., Hollywood,
Calif.— CN, D, PC, RM

RADOLEK CO., 601 W. Randolph St., Chicago, 111.,
"Radolek"— EL, RP, TR, W

RALSTON RECORD CO., 112 Cedar Ave., Pitman,
N. J., "Ralston radio code course" — R

RANGERTONE, INC., 201 Verona Ave., Newark,
N. J., "Rangertone, Inc." — CN, D, N, RM

REK-0-KUT CORP., 254 Canal St., New York, N. Y.
— PM

RECOTON CORP., 178 Prince St., New York. N. Y.,
"Recoton" — CN, D, N, RP

REGAL AMPLIFIER MFG. CO., 14 W. 17th St.. New
York, N. Y— EL, RP

REMCO — Radio Engineering & Mfg. Co.

REMLER CO., LTD., 2101 Bryant St.. San Francisco.
Calif., "Remler" — RM, TR

SACKHEIM BROS. CORP., 215-219 W. Illinois St..
Chicago, HI.— TT

SCHIRESON BROS., 226 N. Main St., Los Angeles.
Calif.— EL, N, PM, R

SCHLOSS BROS., 801 E. 135th St.. New York, N. Y.
— RC

SHURE BROS., 225 W. Huron St., Chicago, HI,
"Zephyr"— PC

SONORA ELECTRIC PHONOGRAPH CO., INC., 132
W. 22nd St., New York, N. Y., "Sonora"— EL, RP

SOUND PRODUCTS, 704 N. Curson Ave.. Hollywood.
Calif., "The Hollywood" — EL

SPARKS-W1THINGT0N CO., E. Ganson Ave., Jackson,
Mich., "Sparton" — W

SPARTON— Sparks-Withington Co.

SPEAK-0-PHONE RECORDING & EQUIPMENT CO.,
23 W. 60th St., New York, N. Y., "Speakophone"
— CN, D, RM

STROMBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Rd., Rochester, N. Y., "Stromberg-Carlson"
—ARC, RP

SUNDT ENGINEERING CO., 4238 Lincoln Ave., Chi-
cago, HI.— EL, PC, TT

TALKING DEVICES CO., 4451 Irving Park Blvd.,
Chicago, 111.— ARC, TT

TELETRAN PRODUCTS CO., 2233 University Ave.,
St. Paul, Minn.— ARC, RP

TRANSFORMER CORP. of AMERICA, 69 Wooster St.,
New York, N. Y., "Clarion"— ARC, EL, RC, RP,
TR, TT

UNIT REPRODUCERS MFG. CO., 999 E. Main St.,
Rochester, N. Y., "Magna" — PM

UNITED CINEPHONE CORP., Sound Equip. Div., 43-
37, 33rd St., Long Island City, N. Y., "United
Cinephone"— TR, TT

UNIVERSAL MICROPHONE CO., 424 Warren Lane,
Inglewood, Calif., "Universal" — CN, D, RM

VICTOR— RCA Mfg. Co.

VOCAGRAPH SOUND SYSTEMS, 164 N. May 8t..
Chicago, Hi.— ARC, EL, RP

VOCALION — Brunswick Record Corp.

WEBSTER-CHICAGO— Webster Co.

WEBSTER CO., 5622 Bloomingdale Ave., Chisago, ni..
' 'Webster-Chicago" — PM

WEBSTER ELECTRIC CO., Racine, Wis., "WebstM-
Electric"— PC, PM, RP

WESTERN ELECTRIC CO., 195 Broadway, New Yert.
N. Y., "Western Electric" — M, PM, TT

WILCOX-GAY CORP., Charlotte, Mich., "Wilcox-Qay"
— W

RUDOLPH WURLITZER CO., North Tonawanda, N. T.
—EL

ZEPHYR— Shure Bros.

RESISTORS & VOLUME CONTROLS

Attenuators (precision) ■ ■ A
Fixed composition .... FC
Fixed wirewound .... FW

Industrial fixed I

Plug-in (tubes) PT

Power rheostats PR

Precision PRE

Suppressors SU

Variable V

Volume controls VC

AEROVOX CORP., New Bedford, Mass., "Pyrohm"—

FC, FW
ALLEN-BRADLEY CO., 1326 South 2nd St., Mil-
waukee, Wis. — FC, FW, VC, V
AMPERITE CO., 561 Broadway, New York, N. Y.,

"Amperite" — PT
ARCO TUBE CO., 227 Central Ave., Newark, N. J.—

PT
ARCTURUS RADIO TUBE CO., 729 FreUngbuysei

Ave., Newark, N. J., "Arcturus" — PT
ATLAS RESISTOR CO.. 423 Broome St., New York.

N. Y., "Atlas"— FW, V
BROWN DEVIL— Ohmite Mfg. Co.
CAN DOH MS— Muter Co.
CARBORUNDUM CO., Olobar Division, Niagara Falls.

N. Y., "Globar"— FC
CENTRALAB, 900 E. Keefe Ave., Milwaukee. Wis.,

"Centralab"— A, FC, PR, SU, V, VC
CHAMPION RADIO WORKS, Danvers, Mass.— PT
CHICAGO TELEPHONE SUPPLY CO., 1142 W.

Beardsley Ave., Elkhart, Ind— V, VC
CINEMA ENGINEERING CO., 7606 Santa Monica

Blvd., Hollywood, Calif., "Cinema" — A, I, PB,

PRE, V
CLAROSTAT MFG. CO., 285 N. 6th St., Brooklyn,

N. Y., "Clarostat"— A, FC, FW, I, PT, PR, PRE,

SU, V, VC
COLE RADIO WORKS, 86 Westville Ave., Caldwell.

N. J., "Meggit"— FW, V
CONSOLIDATED WIRE & ASSOC. CORPS., Peoria

St., Chicago, HI.— FC, FW, V, VC, SU
CONTINENTAL CARBON, INC., 13900 Lorain Ave.,

Cleveland, Ohio, "Continental" — FC, SU, FW, PRE
DAVEN CO., 158 Summit St., Newark, N. J., "Daven"

—A, FW, PRE, V, VC
DE-JUR-AMSCO CORP., Shelton, Conn.— PR
DEPENDABLE— Radio City Products Co., Inc.
ELECTRO MOTIVE MFG. CO., INC., 797 E. 140th

St., New York, N. Y., "Blmenco"— FC, FW, SU
ELMENCO— Electro Motive Mfg. Co., Inc.
ERIE RESISTOR CORP., 644 W. 12th St., Erie, Pa.,

"Erie"— FC, I, SU
EX-STAT— Tilton Electric Corp.
GENERAL RADIO CO., 30 State St., Cambridge.

Mass., "G-R" — PRE & special purpose
G-H — Girard-Hopkins
GIRARD-HOPKINS, 1437 23rd Ave., Oakland. Calif.,

"G-H"— FC
GLOBAR — Carborundum Co.
G-R — General Radio Co.

GUARDIAN ELECTRIC CO., 1625 Walnut St., Chi-
cago, 111. — Remote volume controls
HARDWICK & HINDLE, INC., 40 Herman St.. New-
ark, N. J.— FW, I, PR
HYGRADE SYLVANIA CORP., 500 Fifth Ave., New

York, N. Y., "Sylvania" — PT
HYTRON CORP., 76 Lafayette St., Salem, Mass.,

"Hytron" — PT
ICA — Insuline Corp. of America
INSULINE CORP. OF AMERICA, 25 Park Place.

New York, N. Y., "ICA"— PRE, SU, V, VC

RADIO YEAR BOOK

■■:'■■■!:■'•: ■ ■ -"

,e<*

HIGH FREQUENCY RESISTORS

(1/2 to .150 Watts)

ULTRA HIGH RANGE RESISTORS

(to 100,000 Megohms)

HIGH VOLTAGE RESISTORS

(to 100,000 Volts)

INSULATED WIRE WOUND
RESISTOR'S (1/2 to 20 Watts)

CEMENT COATED POWER WIRE

WOUND RESISTORS
(5 Watts to 200 Watts— Induc-
tive and noil-inductive types)

PRECISION WIRE WOUND RESISTORS

(Tolerances as lowas 1 / 1 0 oi 1 % )

AUTOMOBILE RADIO SUPPRESSORS

AL1- METAL POWER RHEOSTATS

(25 arid 50 Watts)

FLUORESCENT LAMP RESISTORS
Small units for rapid heat dis-
sipation: oft d.c. applications

INTERNATIONAL RESISTANCE CO.

|401 N. Broad St., Philadelphia, Pa

MARCH, 7939

RESISTORS

& VOLUME GONTROLS-Cont'd

INTERNATIONAL RESISTANCE CO., 401 N. Broad
St., Philadelphia, Pa., "IRC"— A, FC, PW, I, PR,
PRE, SU, V, VC

J. F. D. MFG. CO., 4111 Ft. Hamilton Pkwy., Brook-
lyn, N. Y., "JFD"— PT

LECTROHM, INC., 5133 W. 25th Place, Cicero, 111.
— FW, I

LEEDS & NORTH RUP, 4970 Stenton Ave., Philadel-
phia, Pa.— A, PRE

P. R. MALLORY & CO., INC., 3029 E. Washington
St., Indianapolis, Ind., "Yaxley"— A, FC, FW, I,
PRE, V, VC

M EGG IT — Cole Radio Works

MICAMOLD RADIO CORP., 1087 Flushing Ave.,
Brooklyn, N. Y., "Micamold"— FW, PT

MICROHM — Precision Resistor Co.

MORRILL & MORRILL, 30 Church St., New York,
N. Y.— PRE

MULTI VOLT— Ohmite Mfg. Co.

Cste&Mtudl

• The RIGHT data covering all standard sets; the
RIGHT replacement; the RIGHT performance — these fac-
tors spell PROFITABLE SERVICING • Which is why
CLAROSTAT offers you the most up-to-date Service Man-
ual, backed by exact-duplicate replacements and climaxed
by outstanding performance. • Ask local Jobber for the
CLAROSTAT Senrice Manual — or write us direct.
See us at the RADIO PARTS MANUFACTURERS
NATIONAL TRADE SHOW. Booth 620-622, Hertz Ave.
June 14-15-16-17

CLAROSTAT

■ ax ufa c Tin i. >r; rn>.

Incnrpomlcd

2113 > or 111 Sixth St.

Brooklyn. X. Y.

We will send prepaid

anywhere in United States

for

THE MOST

UP-TO-DATE

and COMPLETE CHART

ON BALLAST TUBES

STOLL RADIO CO.

116 FRANKLIN ST. PEORIA, ILL.

Distributors of Radio Supplies

MUTER CO., 1255 S. Michigan Ave., Chicago, HI.,
"Candohms," "Ziphohms"— FW, I, PT, PRE

OHIO CARBON CO., 12508 Berea Rd., Lakewood,
Ohio, "Ohiohm"— FC, SU

OH 10 HM— Ohio Carbon Co.

OHMITE MFG. CO., 4835 W. Flournoy St., Chicago,
EL, "Ohmite," "Red Devil," "Brown Devil,"
"Wirewatt," "Multivolt," "Riteohm"— FC, FW, I,
PR, PRE, V

OHMSPUN— The States Co.

PHILCO RADIO & TELEVISION CORP., Tioga & C
Sts., Philadelphia, Pa., "Philco"— FC, FW, SU,
V, VC

PRECISION RESISTOR CO., 334 Badger Ave., New-
ark, N. J., "Microhm"— A, FW, I, PR, PRE, V

PYROHM— Aerovox Corp.

RADIO CITY PRODUCTS CO., INC., 88 Park Place,

New York, N. Y., "Dependable" — PRE
RAYTHEON PRODUCTION CORP., 420 Lexington

Ave., New York, N. Y.— PT
RCA MFG. CO., Front & Cooper Sts., Camden, N. J..

"RCA"— A, I, PR, FC, FW, PRE, PT, V, VC, SU
READRITE METER WORKS, 136 E. College Ave..

Bluffton, Ohio, "Readrite"— PRE
RED DEVIL— Ohmite Mfg. Co.
REMLER CO., LTD., 2101 Bryant St., San Franciseo.

Calif., "Remler" — A
RITEOHM— Ohmite Mfg. Co.
SHALLCROSS MFG. CO., 10 Jackson Ave., CoUing-

dale. Pa., "Shallcross"— A, FW, PRE, V
SPEER CARBON CO., Theresia St., St. Marys, Pa.,

"Speer"— FC, SU
STACKPOLE CARBON CO., Tannery Street, St. Marys.

Pa., "Stackpole"— FC, SU, VC
STATES CO., 19 New Park Ave., Hartford, Conn.,

"Ohmspun" — FW
SYLVAN I A — Hygrade Sylvania Corp.
TECH LABORATORIES, 7 Lincoln St., Jersey City,

N. J., "Tech Lab"— A, PRE, VC
TILTON ELECTRIC CORP., 15 E. 26th St., New

York, N. Y., "Ex-Stat"— FC, FW, SU, V, VC
TRIAD MFG. CO., INC., Blackstone & Fountain Sts.,

Pawtucket, R. I., "Triad" — PT
TRIPLETT ELECTRICAL INSTRUMENT CORP., 122

Main St., Bluffton, Ohio, "Triplett"— PRE
TUNG-SOL LAMP WORKS, INC.. Radio Tube Div.,

95 8th Ave., Newark, N. J., "Tung-Sol"— PT
UTAH RADIO PRODUCTS CO., 820 Orleans St.,

Chicago, HI., "Utah"— A, FW, I, PRE, V, VC
WARD LEONARD ELECTRIC CO., 31 South St..

Mount Vernon, N. Y— FW, PR, SU, V, VC
WARD PRODUCTS CO., 1523 E. 45th St., Cleveland,

Ohio— SU
S. S. WHITE DENTAL MFG. CO., Industrial Div.,

10 E. 40th St,. New York, N. Y., "S. S. White

Molded"— FC
WIRE WATT— Ohmite Mfg. Co.
WIRTCO PHENOCOTE— Wirt Co.
WIRT CO., 5221 Greene St., Philadelphia, Pa.,

"Wirtco Phenocote"— FC, FW, I, SU, V. VC
YAXLEY— P. R. Mallory & Co., Inc.
ZIPOH MS— Muter Co.

ROTARY MACHINES

AC plants (gas engine) • AC

Converters CON

DC generators DC

Dynamotors DYN

Gas engines ENG

BODINE ELECTRIC CO., 2254 W. Ohio St.. Chicago,
111.— CON, DYN

CARTER MOTOR CO., 1608 N. Milwaukee Ave., Chi-
cago, HI. — DYN, DC

El COR, INC., 515 S. Laflin St., Chicago, ni.— AC,
CON, DC, DYN, ENG

ELECTRIC SPECIALTY CO., Stamford, Conn., "Ebco"
—CON, DYN, DC

ESCO — Electric Specialty Co.

F.E.C. — Foraco Corp.

FORACO CORP., 2111 Woodward Ave., Detroit,
Mich., "F.E.C."— AC, ENG

HETRO ELECTRICAL INDUSTRIES, INC., 4611 Ba-
venswood Ave., Chicago, HL— AC, CON, DC, ENG

JANETTE MFG. CO., 556-558 W. Monroe 8t, Chi-
cago, Hi.— AC, CON, DC

KATO ENGINEERING CO., 530 No. Front St.,
Mankato, Minn., "Kato"— AC, CON, DC, DYN

LAUSON CO., New Holstein, Wis.— ENG

LEAR AD 10 — Lear Development Co.

LEAR DEVELOPMENT CO., 121 W. 17tb St, New
York, N. Y., "Learadio" — AC, ENG

D. W. ONAN & SONS, 591 Royalston Ave.. Minne-
apolis, Minn., "Onan" — AC, DC

PH0T0PH0NE— RCA Mfg. Co.

PIONEER GEN-E-MOTOR CORP., 466 W. Superior
St., Chicago, HI., "Pioneer"— AC, CON, DYN

POTTER CONDENSER CO., 1950 Sheridan Rd., North
Chicago, HI.— AC

RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,
"RCA Photophone"— CON

TELETRAN PRODUCTS CO., 2233 University Ave-
St. Paul, Minn.— DYN

MONTGOMERY WARD & CO., W. Chicago & N. Larr
Sts., Chicago, 111.— AC, CON. DC, ENG, DYN

RECTIFIERS

Battery charqing tubes B

Gas filled tubes • G

Metallic rectifiers M

Mercury arc • • MA

Power units comDlete PU

Vacuum tubes (receiving excluded) ■ V

AMERICAN COMMUNICATIONS CORP., 1650 Broad-
way, New York, N. Y., "American"— <3, V

VICTOR J. ANDREW, 6429 S. Lavergne Ave., Chi-
cago, HI.— PU

ARCO TUBE CO., 227 Central Ave., Newark, N. J.—
B, V

ARLAVOX MFG. CO., 430 S. Green St., Chicago, HI.
— G

B-L ELECTRIC MFG. CO., 19th & Washington Aves.,
St. Louis, Mo., "B-L"— M, PU

CETRON — Continental Electric Co.

CINEMA ENGINEERING CO., 7606 Santa Monies
Blvd., Hollywood, Calif., "Cinema"— PU

COLLINS RADIO CO., 2920 First Ave., Cedar Rapids,
IA.— PU, V

CONTINENTAL ELECTRIC CO., Geneva, HI., "Cet-
ron"— B, MA

\°h METALLIC

for

RADIO, TELEVISION, AND
ELECTRONIC APPLICATIONS

B-L RECTIFIERS are dry. compact,
rugged, all-metal units for:

Relays and Solenoids

Telephones

Tube filaments

Battery charging

Speaker fields

Exciter lamps

Burglar alarms
and many other purposes.

Write for literature
on your company
letterhead. De-
scriptive booklet
containing use-
ful data free to
m a n u f acturers
and distribu-
tors.

THE BENWOOD-LINZE CO.
ST. LOUIS, MO.

RADIO YEAR BOOK

DELCO — United Motors Service

ECCO NIGH FREQUENCY CORP., 120 W. 20th St..

New York, N. Y — PU
FERRANTI ELECTRIC, INC., 30 Rockefeller Plaza,

New York, N. Y., "Ferranti"— PU
INTERNATIONAL TRANSFORMER CO., 39 W. 20th

St.. New York. N. Y — PU
KAAR ENGINEERING CO., 619 Emerson St., Palo

Alto, Calif., "Kaar"— PU
P. R. MALLORY & CO., INC., 3029 E. Washington

St., Indianapolis, Ind., "Mallory Dry Disc" — M. PU
RECTIFILTER— Raytheon Mfg. Co.
RADIART CORP., Shaw Ave. at 133rd St., Cleve-
land, Ohio — PU
RADIO RECEPTOR CO., INC., 251 W. 19tb St..

New York, N. Y., "Radio Receptor"— PU
RAYTHEON MFG. CO., 190 Willow St., Waltham,

Mass., "Rectifllter" — PU
STAN COR — Standard Transformer Corp.
STANDARD TRANSFORMER CORP., 1500 N. Hal-

sted St., Chicago, 111., "Stancor" — M, PU
UNITED CINEPHONE CORP., United Electronic Ind.

Div., 43-37 33rd St., Long Island City, N. Y —

PU, V
UNITED MOTORS SERVICE, W. 3044 Grand Blvd..

Detroit, Mich., "Delco"— PU
UNITED TRANSFORMER CORP., 150 Varick St., New

York, N. Y— PU
WESTINGHOUSE ELEC. & MFG. CO.. Chicopee Falls.

Mass. — MA

SERVICING EQUIPMENT

r/ f J— -V^MfMW—l

Adapters AD

Audio oscillators .... AO
Cathode ray oscillographs CRO
Condenser testers .... CT
Crystal calibrators .... CC
Decade boxes (resistance) DB
Frequency meters .... FM
Impedance bridges .... IB

Instrument fuses F

Meters M

Multi-meters MM

Neon indicators NI

Osc.frequencymodulators MOD

Ohmmeters OHM

Output indicators Ol

Resistance bridges . . . . RB

Set analyzers SA

Signal generators SG

Speaker testers SPK

Tube testers TT

Tuning wands TW

Vacuum tube voltmeters . VTV

ALDEN PRODUCTS CO., 715 Center St., Brockton,
Mass. — AD

AEROV0X CORPORATION, New Bedford, Mass.,— In-
terference analyzer

AMERICAN PHENOLIC CORP., 1250 W. Van Buren
St., Chieago, m, "AMiphenol" — AD

AMERICAN RADIO HARDWARE CO., 476 Broadway,
New York, N. Y. — TW

APPROVED TECHNICAL APPARATUS CO., 57 'A Day

St., New York, N. Y— CT, MM. OHM, OI, SA,

SG, TT, VTV.
ASSOCIATED RESEARCH, INC., 16 N. May St.,

Chicago, El.— CT, DB, FM, IB, M, MM, NI,

OHM. RB, SA, TT, VTV, VT
H. J. BERNARD, 819 Third Ave., Brooklyn, N. Y.—

AO, CRO, CT, FM, IB, MM, OHM, 01, RB, SA,

SG, TT, VTV
L. S. BRACH MFG. CORP., 55 Dickerson St., New-
ark, N. J., "Test-O-Lite"— NI
WM. W. L. BURNETT RADIO LABORATORY, 4814

Idaho St., San Diego, Calif.— CC, FM
BURTON-ROGERS CO., 755 Boylston St., Boston,

Mass., "Hoyt," "Burton-Rogers" — AD, M. MM,

SA, SG, TT, OHM, 01
CARRON MFG. CO., 415 S. Aberdeen St., Chicago.

El., "Carron" — TW, Kits
CHANALYST-^Senice Instruments. Inc.
CLOUGH-BRENGLE CO., 2815 W. 19th St., Chicago,

111., "Clough-Brengle" — AO, CRO, CT, M, MM.

MOD, OHM, 01, RB, SA, SG, SPK, TT, VTV, VT
CONSOLIDATED WIRE & ASSOC. CORPS., Peoria &

Harrison Sts., Chicago, 111. — CT, 01, RB, SG, TT
OAYCO RADIO CORP., 201 Hickory St., Dgyton.

Ohio

Ca*e f0 . ,

*tiov<

e**ient

JUST as the small case often
holds the finest watch or
the finest camera, the Simpson
Testing Instruments illustrated
here are one more example of
"good things coming in small
packages." They are the final
answer to every need for com-
pact but versatile testers — built
for life-time service — moder-
ately priced.

Like the larger Simpson Tes-
ters, these smaller instruments
reflect the beauty of design,
the unerring accuracy, and the
downright dollar value that
could only have been built
into them by Ray Simpson and
a group of associates who have
made a life study of instrument
building.

There is a Simpson Instru-
ment covering every conceiva-
ble requirement — each built to
that high standard which can
only be described as Simpson.
Ask for complete descriptions.
See them at your jobber's.

SIMPSON ELECTRIC CO.

5202 Kinzie St. Chicago, 111.

MODEL 240
"HAMMETER"

A remarkable value
in a pocket size (5'/j x
2% x 13/4") 3,000 volt,
self-contained tester.
Four A.C. and five
DC. voltage ranges at
1,000 ohms per volt;
0-15 - 150 - 750 - milli-
amps; 0-3000 - 300.000

Your price. .$14.75

MODEL 333
TUBE TESTER

most" tube tester ever offered at the
price. Tests all tubes including new
Loctal and other late types. Has double-
filament switching. Only »<*# r/»
71/2 x 10 x 5". Your price 3frZO.SU

MODEL 215- The

first small instrument
with big 41/2 inch
meter. Five A.C. and
D.C. voltage ranges
— five decibel ranges
— 0 - 10 . 100 - 500
milliamps; 0-250 mi-
croamps; 0- 4000 -
400.000 ohms; 0-4

megohms. C?C 7C
Your price. . 9^0.10

MODEL 230_small-
est A.C. - D.C. instru-
ment on the market,
yet has ranges of 0 -
10 - 250 - 1000 A.C.
volts; 0 . 10 - 50 - 250

- 1000 D.C. volts; 0-10

- 50 - 250 D.C. milli-
amps; 0-1000 - 100,000

Your price. . $14.25

MODEL 205 -Pocket
size, but highest quality.
Highest resistance ranges
ever made in instrument
of this size, 0-2000 - 200,-
000 ohms - 2 megohms.
Volts, 0- 10 - 50 - 250 -
1,000 D.C. only; milli-
amps. 0- 10.- 500. •■ 3 «r
Your price 9> 3.Z3

MARCH, 1939

Triplett is the leading
manufacturer of volt-
ohm-milliammeters, com-
bining 2% precision accu-
racy with economical prices

$23-83

ike latino I win Ulete'i

MAKES THIS VOLT-OHM-
MILLIAMMETER RADIO'S No. 1

Gil Ground Testel

EXCLUSIVE TRIPLETT FEATURES:

• Resistance Readings to 3 Megohms

• Separate AC and DC Instruments in
Tilting Twin Case, Accuracy of
Each 2%

• Selector Switch With Contact Error
Less Than y2°/o on M.A.

Considering its usefulness, flexibility and
economical price, Triplett Model 1200-A,
with its two separate meters is a natural
choice for Radio's No. 1 all-around Tester.
Every service dealer should own either
the 1200-A or the adaptation of this model
for special purposes as listed below.
Readings: D.C. Volts — 0-10-50-250-500-1000
Volts at 2000 ohms per volt; 1-10-50-250
M.A.; low ohms, backup circuit, J/2 to 500;
1500 ohms, 1'/2 and 3 megohms. A.C. 0-10-
50-250-500-1000 Volts.

OTHER MODELS

Model 1200- B . . . same as 1200-A but with
DC movement and copper oxide rectifier
for AC readings. Dealer Net $29.33

Model 1200-C . . . same as 1200-A but with
5000 ohms per volt DC. Dealer Net. $26. 83

Model 1200- E . . . same as 1200-A but with
25,000 ohms per volt DC. Dealer Net. $31. 17

Model €66 . . . Popular Pocket Size Volt-
Ohm -Milliammeter. Dealer Net $14.00

^SS^

pMOAJUm

ELECTRICAL INSTRUMENTS

THE TRIPLETT ELECTRICAL INSTRUMENT CO.
193 Harmon Ave., Bluffton, Ohio

Please send me more Information □ 1200-A ;

□ 1200-B; Q 1200-C; D1200-E; Q 666.

Name

Address

City State

SERVICING EQUIPMENT -cont'd

DEPENDABLE— Radio City Products Co.. Inc.

OETERMOHM— Ohmite Mfg. Co.

TOBE DEUTSCHMANN CORP., Canton, Mass.. "Tobe"

— CT, IB
ALLEN B. DUMONT LABORATORIES, INC., 2 Main

Ave., Passaic, N. J., "Dumont"— CRO, MOD
EXCEL — Hickok Electrical Instrument Co.

FERRANTI ELECTRIC, INC., 30 Rockefeller Plaza,
New York, N. Y., "Ferranti"— Electrostatic volt-
meter

HICKOK ELECTRICAL INSTRUMENT CO., 10514
Dupont Ave., Cleveland, Ohio, "Excel," "Hickok" —
AO, CRO, CT, FM, M, MM, MOD, OHM. 01, SA,
SG, SPK, TT, VTV, VT

HOYT— Burton-Rogers Co.

ICA — Insuline Corp. of America

INSULINE CORP. OF AMERICA, 25 Park Place, New
York, N. Y., "ICA"— AD, AO, M, TW, VTV, Vl

JACKSON ELECTRIC INSTRUMENT CO., 129 Wayne
Ave., Dayton, Ohio, "Jackson"— CRO, CT, MM,
MOD, OHM, SA, sq, TT

LITTLEFUSE, INC., 4238 Lincoln Ave., Chicago, 111.
— F, NI

JOHN MECK INSTRUMENTS, 164 N. May St., Chi-
cago, 111., "Meek"— AO, DB, CRO, CT, MOD,
OHM, 01, RB, SA, SG. TT

MEISSNER MFG. CO., 7th & Belmont Sts., Mt. Car-
mel, M— TW

MILLION RADIO & TELEVISION LABORATORIES,

671 W. Ohio St., Chicago, Lll., "Million"— AD,
AO, MM, OHM, 01, SA, SG, TT, VT

MONARCH MFG. CO., 3341 Belmont Ave., Chicago,

HL, "Monarch"— SG
MUTER CO., 1255 S. Michigan Ave., Chicago, 111.,

"Muter"— DB, RB

OHMITE MFG. CO., 4835 W. Flournoy St.. Chicago,
111., "Determohm"— DB

PHILCO RADIO & TELEVISION CORP., Tioga & C
Sts., Philadelphia, Pa.. "Philco"— AO, MM, 01,
SG, SPK, TT

POTTER CONDENSER CO., 565 W Washington, No.
Chicago, HI — CT

PRECISION APPARATUS CORP., 821 E. New York
Ave., Brooklyn, N. Y., "Precision"— MM, OHM,
SA, SG, TT, VTV

RADIART CORP., Shaw Ave., at 133rd St.. Cleve-
land, Ohio — VT

RADIO CITY PRODUCTS CO., INC., 88 Park PI.,
New York, N. Y., "Dependable"— AD, AO, CRO.
CT, MM, SA, SG, TT

RADIOTECHNIC LABORATORY, 1328 Sherman Ave..
Evanston, 111., "R-T-L"— TT

RANGER-EXAMINER— Readrite Meter Works

RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,
"RCA"— CC, FM, NI, 01, TW, VTV, VT, AD, AO.
CBO, CT, IB, MOD, RB, SG

READRITE METER WORKS, 136 B. College Ave.,
Bluffton, Ohio, "Ranger-Examiner," "Readrite" —
AD, CT, M, MM, 01, SA, SG, TT

ROTO-RANGER— Simpson Electric Co.

R-T-L — Radiotechnic Laboratory

SERVICE INSTRUMENTS, INC., 406 Fourth Ave.,
New York, N. Y., "Chanalyst"— VTV

SHALLCROSS MFG. CO., 10 Jackson Ave., Colllng-
dale, Pa., "Shallcross"— DB, IB, MM, OHM, 01,
RB, SA

SIMPSON ELECTRIC CO., 5216 W. Kinzie St., Chi-
cago, m., "Simpson," "Roto-Ranger" — M, MM,
OHM, SA, SG, TT

SOLAR MFG. CORP., 599 Broadway, New York, N. Y.,
"Solar" — CT

SPRAGUE PRODUCTS CO., Beaver St., North
Adams, Mass. — Interference analyzer

SUNDT ENGINEERING CO., 4238 Lincoln Ave., Chi-
cago, ni. — NI, TW

SUPERIOR INSTRUMENTS CO., 139 Cedar St., New
York, N. Y.— SG, CT

SUPREME INSTRUMENTS CORP., 414 Howard St.,
Greenwood, Miss., "Supreme" — AD, AO, CRO, CT,
DB, IB, M, MM, MOD, OHM, 01, BB, SA, SG, TT

TACO — Technical Appliance Corp.

TECHNICAL APPLIANCE CORP., 17 E. 16th St..
New York, N. Y., "Taco"— 01

TELEVISO CO., 341 N. Pulaski Rd.. Chicago, HI.—
AO, DB, SG, VTV

TEST-O-LITE— L. S. Brach Mfg. Corp.

THORDARSON ELECTRIC MFG. CO., 500 W. Huron
St., Chicago, 111.— CRO kit, VTV

TOBE — Tobe Deutschmann Corp.

TRIPLETT ELECTRICAL INSTRUMENT CORP., 122
Main St., Bluffton, Ohio, "Triplett"— AD, AO, CT,
M, MM. MOD. 01. SA. SG. TT. VTV, CBO, OHM.
VT

TRIUMPH MFG. CO., 4017 W. Lake St., Chleago.
111., "Triumph"— AO, CBO, CT, MM, MOD. OHM
SG, TT, VTV, VT, AD, IB, 81, RB, SA

ULTRAMAR MFG CO., 303 W. Monroe St., Chicago.
111.— CC, DB, FM, 01, SG

UNIT REPRODUCERS MFG. CO. 999 E. Main St..
Rochester, N. Y., "Hydro" — AD

UNITED MOTORS SERVICE, 3044 W. Grand Blvd..
Detroit, Mich., "United Motors" — CRO, MM, MOD.
OHM, 01. SA, SG, SPK, TT, CT

UNITED SOUND ENGINEERING CO., 2233 Univer
sity Ave., St. Paul, Minn., "D.S.E."— AO. CRO

U.S.E. — United Sound Engineering Co.

EARL WEBBER CO., 1313 W. Randolph St.. Chi-
cago. HI., "Webber"— CT. M, SA, SG, TT. VT.
CRO, MM, OHM, SPK

WESTINGHOUSE ELECTRIC CO.. Orange St.. Newark.
N. J.— M, MM

WESTON ELECTRICAL INSTRUMENT CORP., 614
Frelinghuysen Ave., Newark, N. J., "Weston"—
AD, AO, CT. M, MM, OHM, 01, SA, TT, VTV

Two New Leaders by

MILLION

VACUUM TUBE
VOLTMETER

.95

MODEL XM
Net Price
Only

$24

With new push-button range selection system.
Reads up to 3,000 volts on 9 scales. Measures
any type of voltage. Does not disturb circuit
under test. Indispensable to the serviceman.

SIGNAL YZER

FOR "CHANNEL" TESTING

$GA.9S

MODEL SY
Net Price
Only

Checks RF, IF, AF and DC voltages in modern
channel testing. Checks intermittent or dead
sets. Co-axial cable. Does not disturb circuit
under test. Complete with tubes. The last word
in modern test equipment. Literature on request.

RADIO AND TELEVISION LAB.
697 W. Ohio St. Chicago. III.

HADIO YEAR BOOK

LINE FILTERS

Power filters P

Radio set S

AEROVOX CORP., 70 Washington St., Brooklyn.

N. Y., "Aerovox"— P, S
AMERICAN COMMUNICATIONS CORP., 1650

Broadway, New York, N. Y., "American" — P
AUTOMATIC ELECTRICAL DEVICES CO., 324 E. 3rd

St., Cincinnati, Ohio, "Filterad" — P
AUTOMATIC ELEC. MFG. CO., 729 S. Front St.,

Mankato, Minn. — P
L. S. BRACH MFG. CORP., 55 Dickerson St.. New-
ark, N. J.—f
CAVALCADE RADIO MFG. CO., 271 7th St., San

Francisco, Calif., "Cavalcade"— 8
COLE RADIO WORKS, 86 Westrille Ave., Caldwell.

N. J., "Cole"— P
CONSOLIDATED WIRE & ASSOC. CORP., Peoria fc

Harrison Sts., Chicago, 111.
CONTINENTAL CARBON, INC., 13900 Lorain Ave.,

Cleveland, Ohio, "Continental," "Filternoys" — P, S
TOBE DEUTSCHMANN CORP., Canton, Mass., "Tobe

Filterette"— P, S
DUMONT ELECTRIC CO., INC.. 514 Broadway.

New York, N. Y.— P, S
ELI M-O-STAT— Solar Mfg. Corp.
ESPEY MFG. CO., INC., 67 Irving PL, New York,

N. Y., "Si-len-ser"
FERRANTI ELECTRIC, INC., 30 Rockefeller Plaza,

New York, N. Y., "Ferranti"
FILTERAD — Automatic Electrical Devices Co
FILTERETTE— Tobe Deutschmann Corp
FILTERNOYS— Continental Carbon, Inc.
FILTERVOLDS — Insuline Corp. of America
GENERAL WINDING CO., 254 W. 31st St.. New

York, N. Y., "Gen-Win"— P. S
GEN-WIN— General Winding Co.
GIRARD-HOPKINS, 1437 23rd Ave., Oakland, Calif.

— S
INSULINE CORP. OF AMERICA, 25 Park Place,

New York, N. Y., "ICA Filtervolds"— P, S
INTERNATIONAL TRANSFORMER CO., 39 W 20th

St., New York. N. Y.— P
MEISSNER MFG. CO., 7th & Belmont. Mt. Carmel,

111.— S
J W. MILLER CO., 5917 S. Main St.. l,ns Angeles.

Calif., "Miller"— P, S
MONARCH MFG. CO., 3341 Belmont Ave.. Chicago,

111., "Monarch" — S
PHILCO RADIO & TELEVISION CORP.. Tioga & C

Sts., Philadelphia, Pa. — P, S
PHILMOBE MFG. CO., 133 University Place, New

York, N. Y., "Philmore"— P. S
POTTER CONDENSER CO., 1950 Sheridan Rd.,

North Chicago, 111.— P, S
RACON ELECTRIC CO., INC., 52 E. 19th St.. New

York, N. Y., "Racon" — P
RCA MFG. CO., Front & Cooper Sts . ramrten. N. J.,

"RCA"
SI-LEN-SER— Espey Mfg. Co.. Inc.
SNYDER, INC., Noble & Darien Sts. Philadelphia.

Pa.— P
SOLAR MFG. CORP., 599 Broadway, New Ynrk.

N. Y., "Elim-O-Stat"— P, S
TACO — Technical Appliance Corp

TECHNICAL APPLIANCE CORP.. 17 E: Ifith St..

New York, N. Y., "Taco"— S
TOBE FILTERETTE — Tobe Deutschmann Corp.
UNITED TRANSFORMER CORP., 150 Varick St., New

York, N. Y., "UTC"— P
UTC — United Transformer Corp.

PLASTIC MOLDERS

Cabinet molders C

Small parts molders . . . . P

A I REX — Electronic Products Co.

ALDEN PRODUCTS CO., 715 Center St.. Brockton.

Mass.— P
AMERICAN PHENOLIC CORP., 1250 W Van Buren

St., Chieago, 111., "Amphenol" — P
AM PHENOL— American Phenolic Corp.
ASSOCIATED ATTLEBORO MFRS., INC., Attleboro.

Mass.

AUBURN BUTTON WORKS, Auburn, N. ¥.— C
BARBER-COLMAN CO., Rockford, 111.— P
B00NT0N MOLDING CO., Boonton, N. J.
CHICAGO MOLDED PRODUCTS CO., 2140 Walnui

St., Chicago, 111.— C, P
COLT'S PATENT FIRE ARMS MFG. CO., Hartford

Conn.
HARRY DAVIES CO., 1428 N. Wells St.. Chicago.

HI.— C, P
DIEMOLDING CORP., Canastota, N. Y— P
DUREZ — General Plastics, Inc.

ELECTRONIC PRODUCTS CO., 5356 E. 9th St..

Los Angeles, Calif., "Airex" — P
ERIE RESISTOR CORP., 644 W. 12th St.. Erie.

Pa., "Erie"— P
ERIE — Erie Resistor Corp.

GENERAL PLASTICS, INC., North Tonawanda, N. Y.,

"Durez" — C, P
INSULATION PRODUCTS CO., Richland St. & Annon

Way, Homewood Station, Pittsburgh, Pa. — P
INSUROK— The Richardson Co.
KELLOGG SWITCHBOARD & SUPPLY CO., 6650

So. Cieero Ave., Chicago, 111., "Kellogg" — P

KEYSTONE SPECIALTY CO., 1373% Cove Ave.,

Lakeland, Cleveland, Ohio — P
KURZ-KASCH CO., Dayton, Ohio— C, P
MEISSNER MFG. CO., 7th & Belmont. Mt. Carmel.

111.— P

ELMER E. MILLS CORP., 812 W. Van Buren St..
Chicago. 111.— P

RECTO MOLDED PRODUCTS, INC., Brewnway & B

& 0 RR, Oakley, Cincinnati, Ohio
REMLER CO., LTD., 2101 Bryant St., San Fran-
cisco, Calif., "Remler" — C, P
REMLER— Remler Co., Ltd.
RESINOX CORP., 230 Park Ave., New York. N. Y

— Plastic molder
RICHARDSON CO., 2738 Lake St., Melrose Part.
Chicago, I1L, "Insurok" — C, P

SYRACUSE ORNAMENTAL CO., Syracuse, N. Y.—
C, P

UNIVERSAL MOLDING CO., 16th & Vermont Sts.,
San Francisco, Calif. — C, P

WARSAW BUTTON CO., 325 W. Huron St., Chicago
111.

WATERTOWN MFG. CO., 127 Echo Lake Rd., Water-
town, Conn. — C, P

CAN WU TEST THETUBES

NEXT
MONTH ?

New filament ar-
rangements just an-
nounced and to be
announced are obso-
leting thousands oi
tube testers. The de-
mand ior a better
tube, one which
would perform at
higher frequencies,
necessitated a me-
chanical change in tube design which resulted in the
single-ended tube. This same mechanical change, primarily
developed lor television, has been incorporated in radio
receiving tubes because of its many advantages. In
changing the ordinary tube to a single-ended tube, fila-
ment termination can not be held constant; the grid gets
the most consideration and the filaments have to look out
for themselves.

At left are shown a few tube bases with different
filament terminations. There are at present fifteen filament
arrangements. But remember, there are 143 different fila-
ment terminations possible without considering center-
tapped type filaments. Center tapped filament combination
possibilities would raise this figure to several hundred.

Most tube testers in use today are already obsolete —
the oft-bragged about spare socket is oi little or no help,
and the constant purchase of adapters will soon equal the
original cost of the tester. So the average service-man
must buy a new tube tester — not just for TODAY'S tubes
but for the tubes which will be announced next month
or next year.

"OTJLY SUPREME HAS THE PATENTED "DOUBLE
FLOATING" FILAMENT RETURN SELECTOR PUSH BUT-
TON SYSTEM!

No matter how filament terminations roam — no matter
if they are center tapped or not— the SUPREME MODEL 504
"TOMORROWS TUBE AND SET TESTER" will check them.
With SUPREME'S unique and exclusive "Double Floating"
Filament Return Circuit, you just press a button and the
tube's filament is automatically connected across the fila-
ment potential supply, regardless of the tube's base
terminations.

The Model 504 is not only the world's most complete
tube tester but it is also a complete set tester and a com-
plete condenser analyzer. You need full information on the
Model 504 so we urge you to see this remarkable value
in tube and set testing equipment at your jobber's TODAY,
or, write for full literature on this and many other com-
pletely new 1939 models of SUPREME
test equipment. Brand new literature just
off the press! Model 504 cash price, $55.50;
or $5.09 cash and 11 monthly payments
of $5.09.

MARCH. 1939

When writing advertisers, please say you saw it in the 1939-40 RADIO YEAR BOOK

J\OW ... a low priced

"TOKFONE"

INTER-COMMUNICATION SET

Plug-in and Talk •

No Installation
Fool Proof

Fully Licensed
Guaranteed

Room to Room

Upstairs and

Down

House to House
Children's
Playroom

Nursery or

Sleeping Quarters

House or Garage

Operates on 110 volts J47 Master Unit
AC or DC and Sub-Station

Complete with
Wire READY-TO-USE. Will operate effi-
ciently with added wire up to 500 feet
without additional attachments. Weight
8 lbs. complete in air-cushioned cartons.

LIST PRICE

COMPLETE

Send for catalogue
showing complete line
up to $79.50 list price.

REGAL AMPLIFIER MFG. CORP.

14-16 W. 17th St.. New York

Cable Address "Ramcoamp"

SOUND SYSTEMS, AMPLIFIERS
& ACCESSORIES

Get all the profit from P.A.

Successful sound engineers — don't depend
on Inadequate "package sound systems." Experienced
sound contractors know that "assembled-for-the-pur-
pose" sound systems clinch the contract and pay
bigger profits. Send for the new Atlas 1939 spring
and summer catalog and see for yourself why the
country's leading P. A. jobbers sell and recom-
ment Atlas Sound Equipment.

ir Write jor your free catalog now I

ATLAS SOUND CORPORATION
1453 39th Street Brooklyn, N. Y.

Acoustic materials AM

Carrying cases C

Intercommunicators I

Kits (amplifier) K

Power amplifiers PA

Pre-amplifiers PRE

Sound systems (complete) • • SS

ACA — Amplifier Co. of America

AIRLINE — Montgomery, Ward & Co.

ALLIED RADIO CORP., 833 W. Jackson Blvd., Chi-
cago, 111., "Knight" — C, PA, PRE, SS, K

AMERICAN COMMUNICATIONS CORP., 1650 Broad-
way, New York, N. Y., "American" — AM, PA.
PRE, SS

AMPERITE CO., 561 Broadway, New York, N. Y .
"Amperite" — PRE

AMPLIFIER CO. OF AMERICA, 17 W. 20th St., New
York, N. Y., "ACA"— C, I, K, PA, PRE, SS

ANDREA RADIO CORP., 48-02 48th Ave., Woodside,
L. I., N. Y.— PA

ATLAS SOUND CORP., 1451 39th St., Brooklyn
N. Y., "Atlas"— AM, C, K, PA, PRE, SS

BANDMASTER CO., Ill Dartmouth St., Boston,
Mass., "Bandmaster" — I, SS

BANK'S MFG. CO., 5019 N. Winthrop Ave., Chicago,
111.— I

BELF0NE— Bell Sound Systems, Inc.

BELL SOUND SYSTEMS, INC., 61 E. Goodale St.,

Columbus, Ohio, "Belfone" — C, I, PA, PRE, SS
DAVID B0GEN CO., INC., 663 Broadway, New York,

N. Y., "Bogen Supreme Fidelity" — I, PA, PRE, SS

CENTRAL COMMUNICATIONS DEVICES, INC., 140

W. 22nd St., New York, N. Y— I
CHICAGO SOUND SYSTEMS CO., 200 E. Illinois St.,

Chicago, 111., "Chicago Sound Amplifiers" — AM. C,

I, K, PA, PRE, SS

CINEMA ENGINEERING CO., 7606 Santa Monica
Blvd., Hollywood, Calif., "Cinema"— K, PA, PRE.
SS
CLARION — Transformer Corp. of America
COLLINS RADIO CO., 2920 First Ave.. Cedar Rapids,
Iowa— PA, PRE

CONVERSAFONE, INC., 17-23 W. 60th S> , New

York, N. Y.— SS
ELECTRICAL RESEARCH PRODUCTS, INC., 250 W.

57th St., New York, N. Y. — SS

ELECTRO ACOUSTIC PRODUCTS 0., 55 E. Wacker
Drive, Chicago, 111. — SS

EMPIRE RADIO MANUFACTURERS, 114 E. 47th
St., New York, N. Y.— SS

F.E.C. — Foraco Corp.

FERRANTI ELECTRIC, INC., 30 Rockefeller Plaza,
New York, N. Y., "Ferranti"— PA, PRE

FORACO CORP., 2111 Woodward Ave., Detroit, Mich.,
"F.E.C."— PA, PRE, SS

FOX SOUND EQUIPMENT CO., 3120 Munroe St.,
Toledo, Ohio — SS

FULTON RADIO CORP., 100 6th Ave., New York,
N. Y., "Fulton"— PA, PRE, SS

GENERAL — General Television & Radio Corp.

GENERAL COMMUNICATION PRODUCTS, INC., Lex-
ington Ave. at Vine, Hollywood, Calif. — PA, PRE,
SS

GENERAL ENGINEERS, 2241 Garrett Rd., Upper
Darby, Pa., "General Engineers" — PA, PRE. SS

GENERAL RADIO CO., 30 State St., Cambridge A,
Mass., "G-R" — Special

G-R — General Radio Co.

GENERAL TELEVISION & RADIO CORP., 257 W.
17th St., New York, N. Y., "General"— PA, SS

GENERAL TRANSFORMER CORP., 1250 W. Van
Buren St., Chicago, 111., "Stentorian" — K, PA

THOMAS B. GIBBS & CO., 900 W. Lake St., Chi-
cago, 111., "Gibbs"— I, PA, PRE, SS

HALLDORSON COMPANY, INC., 4500 Ravenswood
Ave., Chicago, I1L — K

INSULITE CO., Builders Exchange Bldg., Minneapolis,
Minn. — AM

JEFFERSON ELECTRIC CO., Bellwood, 111., "Jeffer-
son"— K

JOHNS-MANSVILLE CO., 22 E. 40th St., New York,
N. Y.— AM

KENYON TRANSFORMER CO., INC., 840 Barry St.,
New York, N. Y., "Kenyon"— K

LOOK, MR. SERVICEMAN!

* "■ 4-INCH

Replacement Speaker
for Midget Radios

The ever-increasing demand for the com-
pact and highly efficient midget type
radio is naturally followed by a demand
for a reduction in the size of the com-
ponent parts, especially the speaker.

Operadio engineers, anticipating this
demand and appreciating that a set, re-
gardless of its design, can be no better
than the speaker it houses, now has ready
for delivery the Operadio Model 45Y4T
ELECTRO DYNAMIC SPEAKER, the
greatest little 4" speaker on the market.

In the design of this speaker, particular
attention was given to the apparent low
or bass response. In actual performance
tests, this speaker has proved itself the
equal of, and in many cases superioi to
larger speakers.

Get one from your jobber. Place it in
a radio set. Put it to any test you desire
— and we know you will be convinced
that it is the best speaker of its type
on the market . . . and you will see the
value of stocking the entire line of
Operadio Replacement Speakers.

Address Dept. RT3

OPERADIO

Manufacturing Company

ST. CHARLES, ILLINOIS

EXPORT DIVISION: 145 W. 45th St., New York

Also manufacturers of a complete line of Public

Address Equipment, P. A. Speakers and

Intercommunicating Systems.

Ray-Lab, Inc.

211 Railroad Avenue, Elmira, N. Y.
Manufacturers of

SOUND EQUIPMENT

AUDITORIUM SYSTEMS

STADIUM INSTALLATIONS

ROLLER SKATING RINKS

PORTABLE SOUND SYSTEMS

CUSTOM BUILT SYSTEMS

ASSOCIATE EQUIPMENT

Catalogue
on Request

Ray-Lab

RADIO YEAR BOOK

RADIO
SPEAKERS, Inc.

LEADERS in NEW
DEVELOPMENT

Manufacturing the Most Complete
Line of Speakers

Permanent and Electro
Dynamic Speakers, Made
to Your Specifications for

HOME RECEIVERS

AUTO RADIO

SOUND SYSTEMS

CENTRAL RADIO

PHONOGRAPH-RADIO

COMBINATIONS

COMMUNICATING SYSTEMS

Write for Information

PERMANENT DYNAMICS —
ELECTRO DYNAMICS —Com-
plete line ranging- from 3 to 12
inches.

OUR BACKGROUND enables us
to produce outstanding' speakers,
which is the basis of our success.

EVERY,; SPEAKER produced by
this company is a product of un-
compromising quality — giving our
customers the double advantage
of high performance and reason-
able price.

Send Us Your Specifications
or Tell Us Your Requirements

RADIO SPEAKERS, Inc.

Henry C. Forster, President

1338 SOUTH MICHIGAN AVE.
CHICAGO, ILLINOIS

KNIGHT— Allied Radio Corp.
LAFAYETTE— Wholesale Radio Service Co., tat.
LEFEBURE CORP., 8117 First Ave., Cedar Rapids,
Iowa — C

LINCROPHONE CO., INC., 1661 Howard Ave., Dtiea,

N. Y.— C, PA, SS
MARINE RADIO CORP., 91 Third Ave., New York.

N. Y., "Marine"— PA, PRE, SS
MILES REPRODUCER CO., INC., 812 Broadway,

New York, N. Y., "Miles"— AM, C, K, PA, PRE,

SS
MILLION RADIO & TELEVISION, 671 W. Ohio St.,

Chicago, 111., "Million" — C, I, PA, PRE, SS
MORLEN ELECTRIC CO., INC., 60 W. 15th St., New

York, N. Y., "Morlen, Inc."— PA, PRE, SS
0PERAOIO MFG. CO., 13th & Indiana Sts., St.

Charles, El., "Operadio"— I, PA, PRE, SS
PACENT ENGINEERING CORP., 79 Madison Ave.,

New York, N. Y., "Pacent"— I, PA, PRE, SS
PHILCO RADIO & TELEVISION CORP, Tioga & C

St, Philadelphia, Pa., "Phileo"— SS
PHOENIX RADIO PRODUCTS LAB., 2040 N. Holly

Ave., Chicago, El. — SS
PICTUR-FONE CO., 806 S. Main St., Lima, Ohio,

"Pictur-Fone" — PA, PRE, 83
PIEZOELECTRIC LABORATORIES, 612 Rockland

Ave., New Dorp, N. Y.— PA, PRE, SS
POINSETTIA, INC., Pitman, N. J.— AM
POWERIZER— Radio Receptor Co., Hie.

PRESTO RECORDING CORP., 139 W. 19th St., New

York, N. Y., "Presto"— PA. PRE, SS
RADIO AMPLIFIER LABORATORIES, 710 Broadway,

New York, N. Y., "R-A-L"— PA. SS
RADIO ENGINEERING & MFG. CO., 26 Journal Sq..

Jersey City, N. J., "Remco" — PRE
RADIO RECEPTOR CO., INC., 251 W. 19th St., New

York, N. Y., "Powerizer" — I, PA, PRE
RAD0LEK CO., 601 W. Randolph St., Chicago. EL.

"Radolek"— I, PA, PRE, SS
R-A-L — Radio Amplifier Laboratories
RANGERTONE, INC., 210 Verona Ave., Newark, N. J.

— Amplified chimes.
RAULAND CORP., 3341 Belmont Ave., Chicago, El.,

"Rauland" — SS
RAY-LAB, INC., 211 Railroad Ave., Elmira, N. Y.,

"Ray-Lab" — SS
RCA MFG. CO., Front & Cooper Sts., Camden. N. 1..

"RCA"— PA, PRE, SS
REGAL AMPLIFIER MFG. CO., 14 W. 17th St.

New York, N. Y.— C, I, PA, SS
REMCO — Radio Engineering & Mfg. Co.
REMLER CO., LTD., 2101 Bryant St., San Francisco,

Calif., "Remler"— I, PA, PRE, SS
J. & L. SARA CO., INC., 123 Liberty St.. New York,

N. Y., "Sara"— PA
SEARS, ROEBUCK & CO., 925 S. Homan St., Chi-
cago, 111., "Silvertone" — PA. SS
SETCHELL-CARLSON, INC., 2233 University Ave..

St. Paul, Minn., "SetcheU-Carlson"— I, PA, SS
SILVERTONE— Sears. Roebuck & Co.
SKAGGS TRANSFORMER CO., 5894 Broadway. Los

Angeles, Calif.— C, K, PA, PRE. SS
SOUND PRODUCTS, 804 N. Curson Ave., Hollywood,

Calif., "Sound Products"— K, PA, PRE, SS
SOUND SYSTEMS, INC., 6545 Carnegie Ave.. Cleve-
land, Ohio, "S.S.I."— PA, SS
S.S.I. — Sound Systems, Inc.
STANCOR — Standard Transformer Corp.

STANDARD TRANSFORMER CORP., 1500 N. Ealsted

St., Chicago, 111., "Stancor" — K
STENTORIAN — General Transformer Corp.

STROMBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Rd., Rochester, N. Y., "Stromberg-Carlson"
—PRE, SS, PA

9*W^***W*WWW+

WV«V^

INTER COMMUNICATION
SYSTEM MANUFACTURERS
PROTECT YOURSELVES!!

You need the protection of the Bank's
License to safeguard your investment
against unfair competition.

100 MILLION DOLLARS

Conservative estimates prove that the Inter
Communication business will soon represent
a one hundred million dollar industry. A
close parallel exists between this industry
and Radio in 1921. In the year 1938 alone,
over $3,000,000 was invested in Loud Speaker
Inter Communicating equipment. Possible
users of this type of equipment represent
practically every phase of business as well
as homes and institutions.

A REAL OPPORTUNITY

Use this announcement as your BIG
opportunity. Earn greater profits in
this new, fast growing, permanent in-
dustry. Get your Bank's License now.
Write us today for facts and a com-
plete outline of the Bank's plan. Only
a limited number of licenses will be
issued.

DO YOU STOCK ORPHANS?

The Bank's License seeks to protect Re-
tailers, Manufacturers and Consumers
against dumping of distress merchan-
dise— Cut throat competition and un-
sound business practices.

PRESENT LICENSEES

The following firms are licensed to build
Inter Communicating Loud Speaker Sys-
tems under the Bank Patent.

BANK'S MFG. COMPANY, CHICAGO, EL.
LAKE MFG. COMPANY, OAKLAND, CALIF.
NATIONAL MULTIPHONE COMPANY. CHICAGO, ILL.
OPERADIO MFG. COMPANY, ST. CHARLES. ILL.
PATHE RADIO & TELEVISION CORP., CHICAGO. ILL.
TALK-A-PHONE MFC. COMPANY, CHICAGO, ILL.
UNITED PRESSED PRODUCTS CORP., CHICAGO, EL.
UNITED SOUND ENG. CO., ST. PAUL, MINN.
U S ELECTRIC TELEPHONE CORP.. CHICAGO, EL.
THE WEBSTER COMPANY, CHICAGO, ILL.
WEBSTER ELECTRIC COMPANY, RACINE, WIS.

Other firms manufacturing and retailing two-
way Loud Speaker Systems should be
licensed. CONSULT US IMMEDIATELY.

BANK'S

MANUFACTURING
COMPANY

Maurice Bank, Consulting Engineer, Licensor
Manufacturers of Quality Intercommunication Systems
5019 North Winthrop Ave.. Chicago, III.
■ itiailh^AXitiiHiAift

STRIKING DESIGN ^MATCHED by BRILLIANT

LTE

Take a look at this new Bell 15 watt P. A. System . . .
then double check its features! Packed in its smartly
designed case of dustproof gray you'U find such hit
refinements as improved tone-control, larger baffles,
illuminated control panel, three input channels, heavy-
duty permanent magnet speakers, high-gain amplifier,
octal series tubes — and many others! Supplied with any
current type microphone. Easy to service, too — ampli-
fier cover fastens firmly with only two screws!
Readily portable in a compact unit, and available with
walnut speaker baffles and pedestal mike stands for
permanent installations. The biggest buy of the year!

Bell's complete line leads the field,
information . . . today!

Write for fuU

PERFORMANCE in a NEW
BELL 15 WATT SYSTEM

<%vm

s ojUL^sjjjJJ^TmS/ colu

* Export Debt. 5716 Euclid Ave., Cleveland, Ohio

ESSEX AVE.
COLUMBUS,

...,, r,,,„ OHIO

MARCH, 7939

Announcing the

QUAM

PERNANIC

A Radical Departure from
Conventional Speaker Design !

•

Dynamic Performance at 70%

of Dynamic Cost!

•

The Perfect Speaker for Moderately

Priced Receivers!

•

Better Sensitivity

•

Improved Bass Response

•

Lower Rectifier Drain

•

Lightweight

•

More Compact Design

An exclusive development of the Quam-
Nichols Laboratories, the Quam PER-
MANIC is revolutionizing speaker and
receiver design. Only a laboratory with
the years of experience in speaker design,
and the unexcelled facilities for painstak-
ing research and development could pro-
duce the Quam Permanic, the most out-
standing development in speakers for the
last deca<Je. Write for complete details.

QUAM REPLACEMENT SPEAKERS

Designed for highest tonal qualities,
Quam Quality Built Speakers are perfect
for replacement purposes, and are de-
signed to meet the specific needs of ser-
vicemen, distributors and dealers. The
outstanding, exclusive features of the
Quam Replacement Speakers are making
this the most popular and profitable
speaker line in America today !

EXCLUSIVE QUAM FEATURES

Interchangeable Transformers • Stand-
ardized Voice Coil Impedances • Effec-
tive Dust and Moisture Protection •
Rugged Unit Welded Construction • Ar-
mored Field Coils • Conservative Rat-
ings • Attractive Display Cartons • A
Type for every requirement • Priced for
generous profits.

WRITE FOR BULLETIN 54

QUAM-NICHOLS CO.

33rd PI. & Cottage Grove, Chicago
1674 Broadway, New York

SOUND SYSTEMS, AMPLIFIERS
& ACCESSORIES— Cont'd

SUNDT ENGINEERING CO., 4238 Lincoln Ave., Chi-
cago, m.— PA, SS

SUPREME FIDELITY— Darid Bogan Co., Inc.

TALKING DEVICES CO., 4451 Irving Park Blvd.,
Chicago, 111.— PA, PRE

TECHNICAL PRODUCTS INTERNATIONAL, 135 Lib-
erty St., New York, N. Y., "Tinamite"— K, PA,
PRE, SS

TELETRAN PRODUCTS CO., 2233 University Ave.,
St. Paul, Minn.— C, K, PA, SS

TELEVISO CO., 341 N. Pulaski Rd., Chicago, HI.—
PA, PRE

THORDARSON ELECTRIC MFG. CO., 500 W. Huron
St., Chicago, HI., "Thordarson"— K, PA, PRE

TINAMITE — Technical Products International

TRANSFORMER CORP. OF AMERICA, 69 Wooster
St., New York, N. Y., "Clarion"— C, I, PA, PRE,
SS

TRIUMPH MFG. CO., 401T W. Lake St., Chicago,
111.— PA, PRE, SS

TURNER CO., Cedar Rapids, Iowa— PA, SS

UNITED CINEPHONE CORP., United Electronic In-
dustries Div., 43-37 33rd St., Long Island City,
N. Y.— PRE, SS

UNITED SOUND ENGINEERING CO., 2233 University
Ave., St. Paul, Minn., "U.S.E."— I, PA, SS

UNITED TRANSFORMER CORP., 150 Variek St., New
York, N. Y., "UTC"— K

U.S.E. — United Sound Engineering Co.

U.T.C. — United Transformer Corp.

VOCAGRAPH SOUND SYSTEMS, INC., 164 N. May
St., Chicago, HI, "Vocagraph" — C, PA, PRE, SS

V0LU-T0NE CO., 226 North Main St., Los Angeles.
Calif.— PA

MONTGOMERY WARD & CO., W. Chicago & N. Larr
Sts., Chicago, HI., "Airline"— C, PA, PRE, SS

WEBSTER-CHICAGO— Webster Co.

WEBSTER CO, 5622 Bloomingdale Ave., Chicago, HL,
"Webster-Chicago"— I, PA, PRE, SS

WEBSTER ELECTRIC CO., Racine, Wis., "Webster-
Electric"— I, PA, PRE, SS, C

WESTERN ELECTRIC CO., 195 Broadway, New York.
\. Y.. "Western Electric"— PA, PRE, SS

WESTERN ELECTRONICS CO., 1810 S. W. Yamhill,
Portland, Ore.— PA, PRE, SS

WESTERN FELT WORKS, 4115 Ogden Ave., Chicago,

HL— AM
WESTERN SOUND & ELECTRIC LAB., INC., 311 W.

Kilbourn Ave., Milwaukee, Wis. — PA, PRE, SS
WHOLESALE RADIO SERVICE CD., INC., 100 Slith

Ave., New York. N. Y., "Lafayette" — I, K. PA.

PRE, SS

SPEAKERS & PARTS

Accessories ACC

Acoustic chambers CH

Baffles B

Cones C

Electro-dynamic D

Field coils F

Field exciters FE

Grille cloths GC

Horns H

Magnetic M

Permanent magnet dynamic • PM
Stands ST

ACME WIRE CO., New Haven, Conn— F

AMERICAN COMMUNICATIONS CORP., 1650 Broad
way, New York, N. Y., "American"— ACC. CH.
B, FE

AMERICAN FELT CO., 315 Fourth Ave., New York.
N. Y.— ACC

ARIST0N MFG. CORP., 4045 DIversey Ave.. Chicago.
HI., "Ariston"— D, F, M, PM

ARLAB— Arlarny Mfg. Co.

THERE'S A

B0GEN AifvpJ^ie/i

FOR EVERY PURPOSE

OR every Sound need, there
is a Bogen Unit. . . . From the 6 watt, Ultra Com-
pact, low priced System to the DeLuxe Binaural Ampli-
fier, the DX70. If you have a sound problem, come
to "Sound Headquarters" for its solution! On Dem-
onstration at all Good Jobbers and Distributors. Write
today for our fully illustrated Catalog. It's the "Blue
Book" of Public Address Systems.

DOVIDBOGBI

CO. 663 BROADWAY
Hie. NEW YORK, N.Y.

RADIO YEAR BOOK

ARLAVOX MFG. CO., 430 S. Green St.. Chicago,

DL, "Arlab," "Vitavox"— M
ATLAS SOUND CORP., 1451 39th St., Brooklyn,

N. Y., "Atlas"— ACC, CH, B, C, D, F, FE. GC,

H, M, PM, ST
BEST MFG. CO., INC., 1200 Grove St., Irvington,

N. J.— D, M, PM
BRUSH DEVELOPMENT CO., 33rd & Perkins Ave.,

Cleveland, Ohio, "Brush"— Crystal
CARRON MANUFACTURING CO., 415 S. Aberdeen

St., Chicago, 111., "Carron"— ACC, C, F, GC, H
CINAUDAGRAPH CORP., 2 Selleck St, Stamford,

Conn., "Cinaudagraph," "Magic Magnet" — B, D,

H. PM

CLARION — Transformer Corp. of America
CLEVELAND WIRE CLOTH & MFG. CO., 3573 E.

78th St., Cleveland, Ohio — GC
COLORTONE ACOUSTIC DEVICES, South Bend, Ind.,

"Colortone"— ACC, B, D, H
CONSOLIDATED RADIO PRODUCTS CO., 618 W.

Elm St., Chicago, 111.— D, M, PM
CONTINENTAL MOTORS CORP., 12801 E. Jefferson

St., Detroit, Mich., "Permoflux"— B, PM
FULTON RADIO CORP., 100 6th Ave., New York,

N. Y— D, FE

GENERAL CEMENT MFG. CO., 611 Lincoln Ave.,

Bockford, 111., "G-C" — Speaker Shims
G-C — General Cement Mfg. Co.

HAWLEY PRODUCTS CO., St. Charles, 111., "Haw-
ley"— B, C, H
ILLINOIS WOOD PRODUCTS CORP., 2512 So. Damen

Ave., Chicago, 111.— CH, B
INDUSTRIAL WIRE CLOTH PRODUCTS CO., Wayne,

Mich.— <3C
INTERNATIONAL TRANSFORMER CO., 39 W. 20th

St., New York, N. Y— F
JENSEN RADIO MFG CO., 6601 S. Laramie Ave.,

Chicago, HI., "Jensen" — ACC, D, H, PM
LANSING MFG. CO., 6920 McKinley Ave., Los

Angeles, Calif., "Lansing" — D, H
LEOTONE RADIO CO., 63 Day St., New York. N. Y.

—ACC, B, C, D, F, GC
THE LINCROPHONE CO., INC., 1661 Howard Ave..

Dtica, N. Y— B
MAGIC MAGNET— Cinaudagraph Corp.
MAGNA— Unit Reproducers Mfg. Co.
MAGNAVOX CO., 2131 Bueter Bd., Fort Wayne, Ind..

"Magnavox" — B, C, D, PM
MELOTONE CO., 1774 Amsterdam Ave., New York,

N. Y., "Universal" — F
MILLION RADIO & TELEVISION, 671 W. Ohio St.,

Chicago, ni., "Million"— B, CH, D, PM, ST
NOKOIL— Wright-DeCoster, Inc.
NORDENDALE MFG. CO., 2100 Fulton St., Chicago.

HI.— ACC, D, M
A. QLEK, 4759 Melrose St., Philadelphia, Pa.— GC
OPERADIO MFG. CO., 13th & Indiana Sts , St.

Charles, HI., "Operadio"— ACC, CH, B, D, FE, H,

PM, ST
OXFORD-TARTAK RADIO CORP., 915 W. Van Buren

St., Chicago, 111., "Oxford."— D. FE, H, M. PM
PERMANIC— Quam-Nichols Co.
PERMOFLUX— Continental Motors Corp.

PHILCO RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Philco"— C, D, F, FE,

M, PM
PICTUR-FONE CO., 806 S. Main St., Lima. Ohio.

"Pictur-Fone"
POWERIZER— Radio Receptor Co.. Inc.
PREMIER— Oxferd-Tartak Corp.
QUAM-NICHOLS CO., 33rd PI. & Cottage Grove Ave.,

Chicago, HI., "Quam," "Permanic" — D, M, PM
BACON ELECTRIC CO., INC., 52 E. 19th St., New

York, N. Y., "Racon" — CH, B, C, D, H, M, PM
BADIO RECEPTOR CO., INC., 251 W. 19th St..

New York, N. Y., "Powerizer"— B, D, PM, ST
BADIO SPEAKERS, INC., 1338-40 So. Michigan Ave..

Chicago, HI. — D, PM

BCA MFG. CO., Front & Cooper Sts., Camden, N. J.,
"RCA"— FE, ACC, B, C, D. F, H, M, PM

BO LA CO., 2530 Superior Ave., Cleveland, Ohio — D,
PM

SKAGGS TRANSFORMER CO.. 5894 Broadway, Loi
Angeles, Calif.— F

SOUND SYSTEMS, INC., 6545 Carnegie Ave.. Cleve-
land, Ohio, "S.S.I."— B, CH. D. H, PM
IS. I.— Sound Systems, Inc.

STROMBERG-CARLSON TELEPHONE MFG. CO., 100
Carlson Bd., Rochester, N. Y.— B. D. H, M

SWEDISH IRON & STEEL CO.. 17 Battery PL. N»w

York, N. Y.— D, M, PM
TELETRAN PRODUCTS CO., 2233 University Am.,

St. Paul, Minn.— D, PM, CH. H

TINDALL FABRICS CORP., 486 Pawtucket Ave.. Piw-
tneket, R. I.— GC

UNIT REPRODUCERS MFG. CO.. 999 E. Main St.,
Rochester, N. Y., "Magna" — PJI

UNIVERSAL— Melotone Coll Co.

UNIVERSITY LABORATORIES, 191 Canal St., New

York, N. Y., "University"— ACC, CH, D, H, PM
UTAH RADIO PRODUCTS CO., 820 Orleans St, Chi-
cago, HI., "Utah" — C, D, PM
VAC-0-GRIP CO., 2023 Detroit Ave., Toledo, Ohio,

"Vac-O-Grip"— ACC
VITA VOX— Arlavox Mfg. Co.
VOCAGRAPH SOUND SYSTEMS, 164 N. May St.,

Chicago, HI. — CH, B
WEBSTER-CHICAGO— Webster Co.
WEBSTER CO., 5622 Bloomingdale Ave., Chicago, HI.,

"Webster Chicago"— ACC, B, CH, D, FE, H, PM,

ST
WESTERN ELECTRIC CO., 195 Broadway, New York,

N. Y., "Western Electric"— D, H, M, PM, ST
WESTERN SOUND & ELECTRIC LABS., 311 W. Kil-

bourne Ave., Milwaukee, Wis. — D, H, PM
WRIGHT-DeCOSTER, INC., 2233 University Ave., St.

Paul, Minn., "Wright-DeCoster," "Nokoil" — ACC,

B, C, D, H, M, PM

RADIO LOGS & GLOBES

GEORGE F. CRAM CO., 730 E. Washington St..
Indianapolis, Ind. — Geographical Globes

GENERAL PRODUCTS CO., 1801 Fannin St.. Hous-
ton, Texas

GORDON SPECIALTIES CO., 1104 South Wabash
Ave., Chicago, Til. — World Time Clock

CARL GORR PRINTING CO., INC., 2615 N. Ash-
land Ave., Chicago, HI.— Short Wave Charts

HAYNES RADIO LOG, 161 W. Harrison St.. Chi-
cago, HI. — Logs

SKY PILOT ORGANIZATION, Box 550, Ossining,
N. Y., "Sky Pilot"— World Time Clocks

WEBER-COSTELLO CO.. Chicago Heights, Chicago.
HI.— Radio Globes

For Best Results

oxFonp

svmms

PUBLIC ADDRESS AND
REPLACEMENT SPEAKERS

• Permag-Dynom/c

• Electro-Dynamic

OXFORD Speakers assure best results due
to scientific construction that produces
greater sensitivity and top quality reproduc-
tion from the amazing 3" Permag speaker
to the 14" Permag or Electro Dynamic unit.
Order OXFORD — and be sure!

Complete Stock for Immediate Delivery

fPlease~Sen"dTat7lo9 Price List at Once
Name
Address
.City DtptB

OKFORD-TBRThK

f PRICE IS IMPORTANT, yes— but so is QUALITY !

_^y-— — ^ " development u» speaket. ££||

you ho»c- 0{ the Cm- ifi^^X

the !>e^ Cata\og on

request.

aUo available-

CINAUDAGRAPH CORPORATION

STAMFORD. CONNECTICUT

M4RCH, 7939

. . . with an

Augmented (bigger)

Company of

Ctenttalab

LOW CAPACITY

Lever Action
Switches

• It's been a "sell out" from
the very start . . . the audi-
ence composed of set manu-
facturers, P. A. folks, broad-
casting engineers, test instru-
ment makers and industrial
technicians have been giving
this swell chorus their hearty
approval.

Now . . . augmented combina-
tions cover every probable re-
quirement you may have.
The program (libretto) now
lists the complete lineup. Just
write and ask for special Bul-
letin No. 680 for full details,
or see your jobber.

CENTRALAB

Division of Globe Union, Inc.
Milwaukee, Wis.

Contact clips of
spring brass heavily
plated (silver)
treated for easy
soldering. Switching
combinations avail-
able use up to 12
clips per section.

SWITCHES & RELAYS

Automatic code senders . AC
Circuit breakers . . . . CB

Mercury M

Power P

Protective PR

Push button, see automat. tuning

Relays R

Telegraph keys TK

Test equipment TS

Time TE

Vacuum V

Wave change (receiver) . W
Wave change ( transmitter ).WT

ALDEN PRODUCTS CO., 715 Center St., Brockton,

Mass. — TS
ALLEN BRADLEY CO., 1305 S. First St., Milwaukee.

Wis.— B
ALLIED CONTROL CO., INC., 95 Liberty St., New

York, N. Y — R
AMERICAN AUTOMATIC ELEC. SALES CO., 1034

W. Van Buren St., Chicago, 111. — R
AMERICAN COMMUNICATIONS CORP., 1650 Broad-
way, New York, N. Y., "American" — R
AMERICAN PHENOLIC CORP., 1250 W. Van Buren

St., Chicago, 111., "Amphenol" — TS, W
AM PHENOL — American Phenolic Corp.
ASSOCIATED RESEARCH, INC., 16 N. May St..

Chicago, 111— TS, TE
AUTOMATIC DEVICES MANUFACTURERS, 4243 W

Ogden Ave., Chicago, 111.— TS, W
AUTOMATIC ELEC, MFG. CO., 729 S. Front St.,

Mankato, Minn., "Automatic" — TE
AUTOMATIC SIGNAL CORP., E. Norwalk, Conn.— B
BENDIX RADIO CORP., 60 E. 25th St., Chicago, HI.

— WT
BOND RADIO CO., 13139 Hamilton Ave., Detroit,

Mich.— P, TS
J. H. BUNNELL & CO., 81 Prospect St., Brooklyn,

N. Y.— R
CENTRALAB, 900 E. Keefe Ave., Milwaukee, Wis.,

"Centralab" — TS, W
CHICAGO TELEPHONE SUPPLY CO., 1142 W

Beardsley Ave., Elkhart, Ind. — W
CINEMA ENGINEERING CO., 7606 Santa Monica

Blvd., Hollywood, Calif., "Cinema"— CB, M, PR.

R, V, WT
C. P. CLARE CO., 4901 W. Lawrence St., Chicago,

111.— R
CONTINENTAL ELECTRIC CO., Geneva, nL, "Conti-
nental"— P, R
C0T0-C0IL, INC., 229 Chapman St., Providence, R. L

— R
CUTLER-HAMMER, INC., N. 12th St. & W. St. Paul

Ave., Milwaukee, Wis., "Cutler-Hammer" — P
DAVEN CO., 158 Summit St., Newark, N. J.— TS
DURAK00L, INC., 1010 N. Main St., Elkhart, Ind.,

"Durakool" — M
T0BE DEUTSCHMANN CORP., Canton, Mass., "Tobe

Mu-Switch"— CB
ELECTRIC CONTROLLER & MFG. CO., 2700 E. 79tb

St., Cleveland, Ohio — R
ELECTRONIC PRODUCTS CO., St. Charles. 111.— B
ESTERLINE-ANGUS CO., Indianapolis, Ind.— R
HUGH H. EBY, INC., 2066 Hunting Park Ave..

Philadelphia, Pa. — R
EAGLE SIGNAL CORP., Moline, 111.— R
ECC0 HIGH FREQUENCY CORP., 120 W. 20th St,

New York, N. Y., "Selector"
THOMAS A. EDISON, INC., W. Orange, N. J.— R
GARINER-LEVERING ELECTRIC CO., Haddon

Heights, N. J.— R, AC
GENERAL CONTROL CO., 197 Sidney St., Cambridge,

Mass. — R
GENERAL ELECTRIC CO., Schnectady, N. Y.— B
GENERAL RADIO CO., 30 State St., Cambridge,

Mass., "G-R"— TS
G-R — General Radio Co.

G-M LABS., 1731 Belmont Ave., Chicago, nL— B
GUARDIAN ELECTRIC CO., 1625 Walnut St., Chi-
cago, 111.— PR, R, TE
HARDRAY, INC., 524 W. Broadway, New York. N. Y.

— Thermal Switches

HART MFG. CO., Hartford, Conn.— R

H-B ELECTRIC CO., INC., 2518 N. Broad St., Phila-
delphia, Pa. — Thermal switches, R

HEINEKIN MACH. CORP., 95 Liberty St., New York.
N. Y., "H-C" Sealed Switches— P

HEINEMANN ELECTRIC CO., P. O. Box 299, Tren-
ton, N. J., "Re-Cirk-It"— CB, TS

HYGRADE SYLVAN I A CORP., Clifton, N. J.

ICA — Insuline Corp. of America

INSULINE CORP. OF AMERICA, 25 Park Place, Ne«
York, N. Y., "ICA"— TS, V, W, WT

KELLOGG SWITCHBOARD & SUPPLY CO., 6650 So.
Cicero Ave., Chicago, 111., "Kellogg" — R

KURMAN ELEC. CO., 241 Lafayette St., New York.
N. Y.— B

LEACH RELAY CO., 5915 Avalon Blvd., Los Angelea.
Calif.— R

LES LOGAN CO., 646 Jessie St., San Francisco,
Calif.— TK

P. R. MALLORY & CO., INC., 3029 E. Washington
St. Indianapolis, Ind., "Yaxley"— P, TS, W, WT

MARK TIME— M. H. Rhodes, Inc.

MICRO SWITCH CORP., Freeport, 111., "Microswrtch"
— P, B

MEISSNER MFG. CO., 7th & Belmont Sts., Mt. Car-
mel, IU., "Meissner"— TS, W

J. W. MILLER CO., 5917 S. Main St., Los Angeles,
Calif.— W

MUTER CO., 1255 S. Michigan Ave., Chicago, I1L,
"Muter"— R, TS, W

OAK MFG. CO., 711 W. Lake St., Chicago, IU., "Oak"
— R, W, WT

OHMITE MFG. CO., 4835 W. Flournoy St., Chicago,
m.— WT

PHILCO RADIO & TELEVISION CORP., Tioga & C
Sts., Philadelphia, Pa., "Phtlco"— P, TS, W

PHILMORE MFG. CO., 113 University PI., New York,
N. Y., "Philmore"— CB

RCA MFG. CO., Front & Cooper Sts., Camden. N. i.
"RCA"— P, TS, W

READRITE METER WORKS, 136 E. College Ave..
Bluffton, Ohio, "Readrite" — TS

RE-CIRK-IT — Heinemann Electric Co.

SELECTOR — Ecco High Frequency Corp.

M. H. RHODES, INC., 30 Bartholomew Ave.. Hart-
ford. Conn., "Mark-Time"— TE

ROLLER-SMITH CO., 233 Broadway, New York, N. Y
— R

SHALLCROSS MFG. CO., 10 Jackson Ave., Collins-
dale, Pa., "Shallcross"— TS, W, WT

RADIO PARTS CABINET

Solid Oak exposure varnish finish.
Parts cabinets for shop or retail
stores. Model 1740 has 40 drawers
with removable partitions, 2 4
drawers 4 in. wide, 2^4 x 14*4 in.,
16 drawers 6x2^4 x 14M in. Size
of cabinet 25% in. wide, 27 in.
high, 15 in. deep. $29.80 Net, car-
riage extra.

Other types available to suit all ap-
plications. WRITE TODAY for com-
plete literature.

ORDER A NO. 1740 TODAY

I D. WARREN MFG. CO.

1939 AVON STREET
MONTPELIER OHIO

A40IO YEAR BOOK

SIGMA INSTRUMENTS, INC., 388 Trapelo Rd.. Bel-
mont, Mass., "Sigma" — R
SIGMA — Sigma Instruments, Inc.
SPENCER THERMOSTAT CO., Attleboro, Mass.—

Thermal switches
STAN CO — Standard Electrical Products Co.
STANDARD ELECTRICAL PRODUCTS CO., 317 Sib-
ley St., St. Paul, Minn., "Stanco" — R
STROMBERG CARLSON TELEPHONE MFG. CO.,

Rochester, N. Y.— R
STRUTHERS DUNN, INC., 139 No. Juniper St,

Philadelphia, Pa.— R, TE
SUPREME ELEC. PRODUCTS CO., Rochester, N. Y.

— R
SWEDISH IRON & STEEL CO., 17 Battery Place,

New York, N. Y. — CB, R, M
TECH LABORATORIES, 7 Lincoln St., Jersey City.

N. J., "Tech Lab"— TS, WT
TOBE MU-SWITCH— Tobe Deutschmann Corp.
TORK CLOCK CO., INC., 31 South St., Mt. Vernon,

N. Y., "Tymit" — TE
TRIPLETT ELECTRICAL INSTRUMENT CORP., 122

Main St., BUiffton, Ohio, "Triplett"— R, TS
TRIUMPH MFG. CO., 4017 W. Lake St., Chicago.

Bl.— R, WT
TYMIT— Tork Clork Co., Inc.
UNITED ELECTRONIC INDUSTRIES, 43-47 35th St..

Long Island City, N. Y— R
UTAH RADIO PRODUCTS CO., 820 Orleans St..

Chicago, 111., "Utah"— R
WARD LEONARD ELECTRIC CO., 31 South St., Mt.

Vernon, N. Y., "Ward Leonard" — R
WESTERN ELECTRIC CO., 195 Broadway, New York,

N. Y.— R, V
WESTINGHOUSE ELEC. & MFG. CO., 95 Orange St..

Newark, N. J. — R
WESTON ELECTRICAL INSTRUMENT CORP., 614

Prelinghuysen Ave., Newark, N. J., "Weston" —

R, TS
WESTON — Weston Electrical Instrument Corp.
WHEELCO INSTRUMENTS CO., 1929 S. Halstead

St., Chicago, III.— R
WIRT CO., 5221 Greene St., Philadelphia, Pa.—

P, W
YAXLEY— P. R. MaUory & Co., Inc.
ZENITH ELECTRIC CO., 527 S. Dearborn St.. Chi

eago. 111.— R, TE

•■*fc*3r

BEST BUSINESS IN YEARS
SELLING LAFAYETTE P.A.

TRANSFORMERS & CHOKES

1AFAYETTE

±p. a. saCcs division A

NEW YORK • ATLANTA
CHICAGO

Amateur transmitting AT

Audio (receiving) A

Auto transformers AU

Chokes (receiving) C

Coils & windings CW

Commercial & Broadcast trans. ■ • CT

Power (receiving) P

Voltage regulating VR

ACME ELECTRIC & MFG. CO., Cuba, N. Y., "Acme"

—A, AU, C, P, VR
ACME WIRE CO.. New Haven, Conn.— CW
ADJUST-A-VOLT— Standard Electrical Products Co.
ALDEN PRODUCTS CO., 715 Center St., Brockton,

Mass.— C, CW
AMERICAN TRANSFORMER CO., 180 Emmet St.,

Newark. N. J.. "Amertran"— A, AT, AU, C, CT, P
AMERTRAN — American Transformer Co.
ARLAVOX MFG, CO., 430 S. Green St., Chicago, HI.

—A, C, P
CHICAGO TRANSFORMER CORP., 3501 West Addi-
son St., North Center Station, Chicago, HI., "Chi-

tran"— A, C, P
CHITRAN — Chicago Transformer Corp.
COLLINS RADIO CO., 2920 First Ave., Cedar Rapids,

Iowa— AT, A, AU, C, CT
C0T0-C0IL CO., INC., 229 Chapman St., Providence,

R. I.— CW
DONGAN ELECTRIC MFG. CO., 2987-3001 Franklin

St., Detroit. Mich.— A. C, P
ECCO HIGH FREQUENCY CORP., 120 W. 20th St..

New York, N. Y.— CT
FERRANTI ELECTRIC. INC.. 30 Rockefeller Plaza,

New York, N. Y., "Ferranti"— AT, A, AU, C, CT,

P. VR
FREED TRANSFORMER CO.. 72 Spring St., New

York, N. Y— AT, A. AU, C, CW. CT, P, VR
GENERAL RADIO CO., 30 State St, Cambridge,

Mass., "G-R." "Variac" — A, AU
G-R — General Radio Co.
GENERAL TRANSFORMER CORP..

Buren St., Chicago, HI..

AU, C, P, VR
GENERAL WINDING CO..

York, N. Y., "Gen-Win"

P, VR

GEN-WIN— General Winding Co.
HALLDORSON COMPANY. INC., 4500 Ravenswood

Ave., Chicago, HI.. "Halldorson Vacuum-Sealed"—

AT, A, AU, C, CW. P. VR
HYGRADE SYLVANIA CORP., Clifton, N. J.— C, T
INSULINE CORP. OF AMERICA. 25 Park PL, New

York. N. Y.— AT
INTERNATIONAL TRANSFORMER CO.. 39 W. 20th

St., New York. N. Y.. "International" — A, AU, C,

CW, CT, P, VR
JEFFERSON ELECTRIC CO., Bellwood, m.— AT. A.

AU, C, P
KELLOGG SWITCHBOARD & SUPPLY CO., 6650 So.

Cicero Ave., Chicago. HI.. "Kellogg"— A. C. CW
KENYON TRANSFORMER CO., INC.. 840 Barry St.,

New York, N. Y.. "Kenyon"— A, AT, C, CT. P
MAGNETIC WINDINGS CO.. 16th & Butler Sts.,

Easton. Pa. — A, AU, C, CW. P
MEISSNER MFG. CO., Mt. Carmel, HI.— A, AU, C,

CW
MELOTONE COIL CO., 1774 Amsterdam Ave., New

York. N. Y.. "Universal" — CW
NATIONAL COMPANY. 61 Sherman St., Maiden.

Mass., "National" — A, C, P
NATIONAL MILL SUPPLY CO., 207 E. Columbia St..

Fort Wayne, Ind. — A. C, P
NEWARK TRANSFORMER CO., 17 Frelinghuysen

Ave., Newark, N. J. — AT, AU, CT
NORDENDALE MFG. CO., 2100 Fulton St., Chicago,

ni.— A, C
PEERLESS CABINET CO., 3750 S. Grand Ave., Los

Angeles, Calif., "Peerless"— C, T
PHILCO RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Philco" — A, C, P
RADIO RECEPTOR CO., INC., 251 W. 19th St., New

York, N. Y. — CW, AT, A, C, CT, P
RAYTHEON MFG. CO., 190 Willow St., Waltham.

Mass., "Raytheon" — AT, A, AU, CT, VR
RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,

"RCA"— A, AT. C, CT, P
ROBERTSON-DAVIS CO., INC., 311 N. Desplaines

St., Chicago, HI.

1250 W. Van
'Streamliner" — AT, A,

254 W. 31st St.. New
-AT. A. AU. C. CW, CT.

RIDER'S VOLUME IX

As usual Thordarson is first and original in com-
piling this complete and reliable data on replace-
ment transformers for the receivers listed in
Rider's Volume IX. The correct choke, audio
and output as well as power transformers are
indicated for all types of receivers listed by Rider
— whether AC, AC-DC or battery models.

ASK VOIR
DISTRIRUTO

FOR
So. 213-D

Free supplement to No. 243 and 243-S for
Rider's Volumes I to VIII inclusive. Thordarson
Replacement Transformer Encyclopedias now
cover receivers listed in all of Rider's Manuals —
approximately 8,000 radios — ranging from the
earliest models of about 1920 up to present day
1938-1939 sets. Ask your distributor for your
FREE copy or fili in the coupon below and send
it to the factory today !

OTHER IMPORTANT

THORDARSON
CATALOGS Ai\D GUIDES

AMPLIFIER CATALOG,
Ns. 400 — FREE
Illustrates ten models
from 8 to 75 watts output.

RADIO SERVICE GUIDE,
No. 342— 15c postpaid
32 pages of useful charts,
tables and shortcuts.

SOUND AMPLIFIER GUIDE,
No. 346— 15c postpaid
Circuit diagrams, tem-
plates and parts lists for
amplifiers up to 120 wans
output.

TRANSMITTER GUIDE,
No. 144 — 15c postpaid
Circuit diagrams, details
and parts lists for begin-
ners' to 1 KW rigs.

TRANSFORMER MANUAL,
No. 340 — 50c postpaid
Three guides above plus
encyclopedia, catalogs,
etc., combined in one
loose-leaf cover.

SEE YOUR PARTS

DISTRIBUTOR

OR WRITE

FACTORY NOW!

THORDARSON ELECTRIC MFG. CO.

see W. HURON ST., CHICAGO, ILL.

1PemG.ndL J^ourex Itu /kotaaxion

MARCH, 7939

TRANSFORMERS
&CHOKES-cont'd

SKAGGS TRANSFORMER CO., 5894 Broadway, Los
Angeles, Calif.— AT, A, AU, C, CW, CT, P, VB

STAN COR — Standard Transformer Corp.

STANDARD ELECTRICAL PRODUCTS CO., 317 Sib-
ley St., St. Paul, Minn., "Adjust-A-Volt"— VR

STANDARD TRANSFORMER CORP., 1500 N. Halsted
St., Chicago, I1L, "Stancor"— AT, A, AU, C, CT.
P, VB

STREAMLINER — General Transformer Corp.

THORDARSON— Thordarson Electric Mfg. Co.

THORDARSON ELECTRIC MFG. CO., 500 W. Huron
St., Chicago, 111., "Thordarson" — AT, A, AU, C,
CT, P, VB

TRIUMPH MFG. CO., 4017 W. Lake St., Chicago,
HI.— C

UNITED TRANSFORMER CORP., 150 Varick St., New
York, N. Y„ "UTC" — A, AT, C, CT, P, CW. VB

UNIVERSAL— Melotone Coil Co.

UTAH RADIO PRODUCTS CO., 820 Orleans St.. Chi-
cago, 111., "Utah"— AT, A, AU, C, P

UTC — United Transformer Corp.

VARIAC — General Badio Co.

WEBSTER-CHICAGO— Webster Co.

WEBSTER CO., 5622 Bloomingdalle Are., Chicago.
IU., "Webster-Chicago"— A, AT. CT, P

TOOLS FOR SERVICING

Alignment tools AT

Chassis racks & supports . . C

Drills D

Hand drills HO

Hale cutters HC

Nut drivers ND

lE BETTER

• The combination of high tensile
strength that assures a lasting bond,
and faster, cleaner work made pos-
sible by quick acting flux of pure
water white rosin, has given Gar-
diner Rosin-Core Solders an out-
standing reputation for efficiency
and economy on radio work by ex-
pert or amateur. Yet, due to mod-
ern production methods and big
sales, Gardiner Solders cost less
than even ordinary kinds. Made in
various alloys and core sizes . . .
and in gauges as small as 1/32 of
an inch ... in 1, 5 and 20-lb.
spools.

Fiistern Sales Office »nd Warehouse:

DAVID M. KASSON & CO.,
401 Broadway New York, N. Y.

Parts cabinets PC

Pliers P

Punches PU

Screw drivers SD

Solder S

Soldering irons (electric) . SI
Soldering iron stands . . SS

Soldering paste SP

Wrenches W

ACR0 TOOL & DIE WORKS, 1202 W. Grand Ave..

Chicago, 111., "Aero" — C
ALDEN PRODUCTS CO., 715 Center St.. Brockton.

Mass. — SP
AMERICAN RADIO HARDWARE CO., 476 Broadway.

New York, N. Y.— AT
BLUE WIZARD— H. E. Peer's Tool Products
L. S. BRACH MFG. CORP., 55 Dickerson St., Newark.

N. J., "Solderall"— S, SI
BUD RADIO, INC., 5205 Cedar Ave., Cleveland.

Ohio, "Bud"— AT
CARRON MFG. CO., 415 S. Aberdeen St.. Chicago.

HI., 'Carron"— SI
COLE RADIO WORKS, 86 Westville Ave.. Caldwell.

N. J., "Instansolder" — SI, SS
COOKS MFG. CO., 274 Mile Square Road, Yonkera.

N. Y., "Badiojac" — C
DRAKE ELECTRIC WORKS, INC.. 3654 Lincoln Ave..

Chicago, 111.— SI, SS
ELECTRIC SOLDERING IRON CO., INC.. Deep River.

Conn., "Esico" — SI
ESICO— Electric Soldering Iron Co.. Inc.
FEDERAL SALES CO., 26 S. Jefferson St., Chicago,

ni.— s, sp, w

FORSBERG MFG. CO., 125 Seaview Ave., Bridgeport.
Conn. — SD

GARDINER METAL CO., 4820 S. Campbell Ave., Chi-
cago, 111.— S

GENERAL CEMENT MFG. CO., 611 Lincoln Ave.,
Bockford, 111., "G-C"— AT, SP

G-C — General Cement Mfg. Co.

INSTANSOLDER— Cole Badio Works

INSULINE CORP. OF AMERICA, 25 Park Place. New
York, N. Y— AT, D, HC, PU, SI

K-D MFG. CO., Lancaster, Pa., "K-D Pliers"— P

KESTER SOLDER CO., 4201 Wrightwood Ave., Chi-
cago, 111., "Kester" — S

KRAEUTER & CO., INC., 563 18th Ave.. Newark,
N. J., "Supreme"— P, PU, W

MORRIS REGISTER CO., Council Bluffs, Iowa— HC,
PU

PARK METALWARE CO., INC., Orchard Park, N. Y.
— ND, SD, W

PARKER-KALON CORP., 200 Varick St., New York.
N. Y.— PU

H. E. PEER'S TOOL PRODUCTS. 1355 S. Flower
St., Los Angeles, Calif., "Blue Wizard"— HC

PHILCO RADIO & TELEVISION CORP., Tioga & C
Sts., Philadelphia, Pa.— AT

PYRAMID PRODUCTS CO., 2224 S. State St., Chi-
cago, 111.— Wire Strippers

RADIOJAC— Cooks Mfg. Co.

RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,
"RCA"— AT

RUBY CHEMICAL CO., 68 McDowell St., Columbus,
Ohio— S, SP

SACKHEIM BROS. CORP.. 215-219 W. Illinois St..
Chicago, 111.— S

SOLDERALL— L. S. Brach Mfg. Corp.

STANLEY WORKS, New Britain. Conn— D. HD, PC.
SI. SD

SUPREME— Kraeuter & Co., Inc.

TILTON ELECTRIC CORP., 15 E. 26th St.. New

York, N. Y.— S
UTICA DROP FORGE & TOOL CORP., 2415 Witei-

boro St., Uttea, N. Y.— P, PU, SD
VASCO ELECTRICAL MFG. CB., 4116 Avalon Blvd..

Los Angeles, Calif. — SI, SS
J. D. WARREN MFG. CO., 1939 Avon St.. MontpeMer.

Ohio— PC

TRANSMITTERS & EQUIPMENT

Amateur (xmitters) AM

Amateur kits AK

Antennas A

Aviation (xmitters) AV

Broadcast (xmitters) BC

Commercial (xmitters) • ■ ■ COM

Control consoles CC

Crystals CR

Frequency control equipment FC
Frequency measurements ■ - ■ FM

Insulators ■ . • I

Marine (xmitters) M

Police (xmitters) . P

Speech amplifiers SA

Towers T

Transmission monitor equip. TM
Vertical radiators VR

ACOUSTIC CONSULTANTS, INC., 1270 Sixth Ave..

New York, N. Y., "Modulite" — Modulation indicator
AERONAUTICAL RADIO CO., Boosevelt Field. Min-

eola, N. Y.— A, AV, M, SA
Al REX— Electronic Products Co.
ALDEN PRODUCTS CO., 715 Center St., Brockton.

Mass. — I
ALLIED RADIO CORP., 833 W. Jackson Blvd., Chi

cago. 111., "Knight"— AK, CR, AM
AMERICAN COMMUNICATIONS CORP., 1650 Broad

way. New York, N. Y., "American" — AM, AV, BC.

COM, CC, M, P, SA, TM
AMERICAN PIEZO SUPPLY CO., 3921 Agnes, Kan-
sas City, Mo.— CR
AMERICAN RADIO HARDWARE CO., 476 Broadway.

New York, N. Y— A
BASSETT RESEARCH CORP., 211 Service Court.

South Bend, Ind— AM. AV, COM, P
JOHN F. BEASLEY CONSTRUCTION CO., P. 0. Boi

1547, Muskogee, Okla. — A
BENDIX RADIO CORP., 60 E. 25th St., Chicago, HI..

— AV, COM, CR, CF, FM, M, P, TM
BLAW-KNOX CO., Blawnox, Allegheny Co., Pa.— VB
BLILEY ELECTRIC CO., Union Station Bldg., Erie.

Pa.— CR, FC
WM. W. L. BURNETT RADIO LABORATORY, 4814

Idaho St., San Diego, Calif.— CR, FM
CENTRAL COMMUNICATION DEVICES, INC., 140

W. 22nd St., New York, N. Y.— TM
CINEMA ENGINEERING CO., 7606 Santa Monici

Blvd.. Hollywood. Calif., "Cinema"— CC. M. 8A.

MARINE RADIO EQUIPMENT

A NEW SOURCE OF PROFIT TO RADIO DEALERS

• Here is a new line to add to your present
ones. Easy to sell and priced right! The
Jefferson-Travis Line, because it actually
outsells all other lines, has become recog-
nized as the Leader in the field. Radio
Telephone is fast becoming a necessity in
the marine field for both pleasure craft and
commercial vessels. Write today for our
complete plan showing you how you may
cash in on this fast growing branch of the
Radio Industry. A few exclusive territories
still open. All Jefferson-Travis Equipment
has been licensed by A. T. & T.

JEFFERSON -TRAVIS RADIO MFG. CORP

198 Milburn Avenue rt-3 Baldwin, Long Island, N. Y.

RADIO YEAR BOOK

CLARION— Transformer Corp, of America

COLLINS RADIO CO., 2920 First Ave., Cedar Rapids

la.— AM, A, AV, BC, COM, CC, CR, FC, FM, I,

M, P, SA, T, TM, VR
CORNING GLASS WORKS, Walnut St., Corning,

N. Y— I
C0T0-C0IL CO., INC., 229 Chapman St., Providence,

R. I.— I, AM
ELECTRONIC PRODUCTS CO., 5356 E. 9th St., Los

Angeles, Calif., "Airex" — I
FERRANTI ELECTRIC, INC., 30 Rockefeller Plaza.

New York, N. Y., "Ferranti"— AV, BC, COM, M,

P, SA
GENERAL COMMUNICATION PRODUCTS, INC., Lex-
ington Ave. at Vine, Hollywood, Calif.— AV, COM.

CC
GENERAL ELECTRIC CO., Schenectady, N. Y— P
GENERAL ENGINEERS, 2241 Garrett Rd., Upper

Darby, Pa., "General Engineers" — -AM, AV, COM,

FC, M, P, SA, TM
GENERAL TRANSFORMER CORP., 1250 W. Van

Buren St., Chicago, HI., "Progressive III," "5-10-

20 Streamliner" — AK
HAIGIS LABORATORIES, INC., Maple Shade, N. 1.

—A, FC, P, T
HALLICRAFTERS, INC., 2611 S. Indiana St., Chi-
cago, HI. — AM

D. H. HARRELL, 7731 Essex Ave., Chicago. HL— A,
VR

HARVEY RADIO LABORATORIES, INC., 25 Thorn-
dike St., Cambridge, Mass., "Harvey" — AM, AV,
COM, M, P, SA

HEINTZ & KAUFMAN, South San Francisco, Calif.—
CON

HIPOWER CRYSTAL CO., 2035 W. Charleston St..
Chicago, 111., "Hipower"- — CR

HOKE VERTICAL RADIATORS, 135 S. Market St.,
Petersburg, Va. — I, T

IDECO — The International Derrick & Equip. Co.

INSULINE CORP. OF AMERICA, 25 Park PI.. New
York, N. Y.— AM, AK, A, CR, I

THE INTERNATIONAL DERRICK & SUPPLY CO..
875 Michigan Ave., Columbus. Ohio, "Ideco" — T,
VR

CHARLES F. JACOBS, 270 Lafayette St., New York.
N. Y. — Antenna Spreader

JEFFERSON-TRAVIS RADIO MFG. CORP., 198 Mil-
burn Ave.. Baldwin, N. Y., "Jefferson-Travis" — M,
P

E. F. JOHNSON, Waseca, Minn., "Johnson Q" — A
KAAR ENGINEERING CO., 619 Emerson St., Palo

Alto, Calif., "Kaar"— AM, AV, COM, FC, M, P

KNIGHT— Allied Radio Corp.

LAFAYETTE — Wholesale Radio Service Co., Inc.

LEAR DEVELOPMENT CO., 121 W. 17th St., New

York, N. Y.— COM
LEICHNER ELECTRIC CO., 4120 S. Wayne Ave.,

Fort Wayne, Ind. — Rotating Device for Beam An-
tennas
LINCOLN RADIO & TELEVISION CORP., 841 Jack-
son Blvd., Chicago, HI. — AM
JOHN E. LINGO & SON, INC., 28th St. & Buren

Ave., Camden, N. J. — A, T, VR
LOCKE INSULATOR CORP., S. Charles & Cromwell

Sts., Baltimore, Md. — I
MARINE RADIO CORP., 91 Third Ave., New York,

N. Y., "Marine"— AM, AV, BC, COM, M, SA
MILES REPRODUCER CO., INC., 812 Broadway, New

York, N. Y— AM, AV, BC, COM, M, P, SA
Ml MS RADIO CO., P.O. Box 504, Texarkana, Art— A
PEERLESS RADIO MFG. CO., Division St. & Broad-
way, Albany, N. Y., "Peerless"— AM, AK, A, AV,

BC, COM. CR, FC, M, P, SA
PETERSEN RADIO CO., Council Bluffs, la., "P. R.

Crystals" — CR
PHOENIX RADIO PRODUCTS LAB., 2040 No. Holly

Ave., Chicago, HI. — AV
PIEZO ELECTRIC LABORATORIES, 612 Rockland

Ave., New Dorp. N. Y.— BC, COM, CR, FC, SA, TM
P. R. CRYSTALS — Petersen Radio Co.
PRECISION CRYSTAL LABS., 1211 Liberty St.,

Springfield, Mass. — CR
PREMIER CRYSTAL LABS., INC., 55 Park Row, New

York, N. Y.— CR, FX, FM, TM
PROGRESSIVE III — General Transformer Corp.
RADIO ENGINEERING LABS., INC., 100 William

Ave., Long Island City, N. Y.— AM, BC, COM
RADIO ENGINEERING & MFG. CO., 26 Journal Sq.,

Jersey City, N. J., "Remco"— AM, AK, BC, COM,

CC, FC, SA, TM
RADIO LABORATORIES, INC., 2701 California Ave.,

Seattle, Wash.— COM, FC, M, P
RADIOMARINE CORP. OF AMERICA, 75 Varick St..

New York, N. Y— COM, M
RADIO RECEPTOR CO., INC., 251 W. 19th St., New

York, N. Y.. "Radio Receptor"— A, AV, COM, FC,

M, P, SA, T, TM, VR
RADIO TELEVISION INDUSTRIES CORP., 2 Linden

St., Reading, Mass.— AM, AV. BC. COM, CC, FC,

M. P. SA, TM

RADIO TRANSCEIVER LABS., 86-27 115th St.,

Richmond Hill, N. Y., "Radio Transceiver Labs."—

AM, COM, TJHF Trans.
RCA MFG. CO., Front & Cooper Sts., Camden, N. J.,

"RCA"— AV, BC, CC, CR, FC, FM. M. P. SA, TM.

AM, COM, BC
REMCO — Radio Engineering & Mfg. Co.
REMLER CO., LTD., 2101 Bryant St., San Francisco,

Calif., "Remler"— SA
SCIENTIFIC RADIO SERVICE, 124 Jackson Ave.,

University Park, Md. — CR
SKAGGS TRANSFORMER CO., 5894 Broadway, Los

Angeles, Calif.— AM, AK, AV, BC, COM, CC, M.

P, SA, TM
SOUND PRODUCTS, 704 N. Curson Ave., Hollywood,

Calif., "Sound Products"— COM, M, SA
STANDARD TRANSFORMER CORP., 1500 N. Hal-

sted St., Chicago, HL— AK
STREAMLINER — General Transformer Corp.
TECHNICAL PRODUCTS INTERNATIONAL, 135 Lib-
erty St., New York, N. Y., "Technipower"— AM,

AK, SA
TECHNIPOWER — Technical Products International
TELEVISO CO., 341 N. Pulaski Rd., Chicago, EX-
AM, AV, BG, COM, CC, M, P, SA, TM
TEMCO TRANSMITTERS — Transmitter Equipment Mfg

Co.
TOPPING— Vibraloc Mfg. Co.
TRANSDUCER CORP., 30 Rockefeller Plaza, New

York, N. Y., "Transducer" — VR
TRANSFORMER CORP. of AMERICA, 69 Wooster St.,

New York, N. Y., "Clarion"— AM, COM, SA
TRANSMITTER EQUIPMENT MFG. CO., 130 Cedar

St., New York, N. Y., "Temco Transmitters" —

AM, AV, BC, COM, M, P. SA
TRIUMPH MFG. CO., 4017 W. Lake St., Chicago,

HI.— AV, FC, M, TM
UNITED CINEPHONE CORP., Div. United Electronic

Industries, 43-37 33rd St., Long Island City. N. Y.

— AV, BC, SA
UNITED TRANSFORMER CORP., 72 Spring St., New

York, N. Y— AM. AK
UTAH RADIO PRODUCTS CO., 820 Orleans St.. Chi-
cago, HI., "Utah"— AK
VIBRALOC MFG. CO., 3691 Mission St., San Fran-
cisco, Calif., "Topping" — AM, M, P
MONTGOMERY WARD & CO., W. Chicago & N. Larr

Sts., Chicago, Hi— AM, AK, A, COM, CR, I, SA
WASHINGTON INSTITUTE OF TECHNOLOGY, Mc-

Lachlen Bldg., Washington, D. C— FM
WESTERN ELECTRIC CO., 195 Broadway, New York,

N. Y., "Western Electric"— A. AV, BC, COM, CR.

FC, M, P, SA
WESTINGHOUSE ELECTRIC CO., Chicopee Falls.

Mass.— COM, P
WHOLESALE RADIO SERVICE CO., INC., 100 Sixth

Ave.. New York, N. Y., "Lafayette"— AM

TUBES

Cathode-ray CR

Industrial I

Photo-cells PC

Receiving (including rectifiers) . ■ R

Transmitting T

Voltage control VC

AIREX— Electronic Products Co.

AMPEREX ELECTRONICS PRODUCTS CORP., 79

Washington St., Brooklyn, N. Y., "Amperex"— I.

PC, T
ARCO TUBE CO., 227 Central Ave., Newark, N. J.—

PC, R, T
ARCTURUS RADIO TUBE CO., 720 Frelinghuysen

Ave., Newark, N. J., "Arcturus" — R
CETRON— Continental Electric Co.
CHAMPION RADIO WORKS, Div. of Consolidated

Electric Lamp Co., Danvers, Mass., "Champion" — R
COLLINS RADIO CO., 2920 First Ave., Cedar Rapids,

la.— R, T
CONTINENTAL ELECTRIC CO., Geneva, 111., "Cetron"

—I, PC
CROSLEY RADIO CORP., 1329 Arlington St.. Cin-
cinnati, Ohio — R
CUNNINGHAM— Radiotron Div., RCA Mfg. Co.
DELCO — United Motors Service
ALLEN B. DuMONT LABORATORIES. INC., 2 Main

Ave., Passaic, N. J., "Dumont" — CR
DURESITE— World Bestos Corp.

The
ARCTURUS
EQUIPMENT DEAL'

Gives You the New Equipment
You Need . . . Practically FREE!

No doubt about it! With all the new-
tubes recently introduced, you need mod-
ern store and shop equipment to keep up
with the demands of present day Radio.
You must be geared up to render fast,
efficient and accurate service on all types.
You've got to have equipment that proves
to your customers that you are wide
awake — prepared to give them excellent
service at a reasonable price.

That's why Arcturus offers you an
Equipment Deal.* That's why we've made
it the most liberal Deal ever devised. We
know you'll sell more tubes, take care of
more service work, attract new customers
if you are properly equipped. That means
we both make more money — and you
make a worthwhile EXTRA PRCFTT in the
form of the equipment you need!

GET STARTED !
You Can't Lose!

Arcturus Equipment
Deal DOWN PAY-
MENTS are much
lower than any other;
. . . TUBE REQUIRE-
MENTS are kept at a
minimum! . . . you pet
IMMEDIATE DELIV-
ERY of the units you
select ! ... and you
itill pay only STAND-
ARD PRICES for
tubes! Get all the facts
— get started today!

(*Offtr good in U.S. A. only)

ARCTURUS RADIO TUBE CO., Newark N. J. T"17 !

' Without cost or obligation, send my copy of the
I ARCTURUS DEALER HELPS Folder and details I
j of the ARCTURUS EQUIPMENT DEAL.

| Name |

I Street I

City State

■ □ I am a dealer □ I am a serviceman. My j

I jobber is j

I For your convenience (hit coupon can be pasted on i penoy postcard j

MARCH, 7939

TUBES— Cont'd

HUGH H. EBY, INC., 2066 Hunting Park Ave.,

Philadelphia, Pa. — PC
El MAC— Eitel-McCullough. Inc.
EITEL-McCULLOUGH, INC., 798 San Mateo Ave.,

San Bruno, Calif., "Eimac" — I, T
ELECTROCELL— F. Loewenberg
ELECTRONIC PRODUCTS CO., 5356 E. 9th St., Los

Angeles, Calif., "Airex"— CR, I, T
FEDERAL TELEGRAPH CO., 200 Mt. Pleasant Ave.,

Newark, N. J., "Federal" — T
GAM MATRON— Heintz & Kaufman, Ltd.
GENERAL ELECTRIC CO., 1285 Boston Ave., Bridge-
port. Conn. — R
GENERAL ELECTRIC CO., Schenectady, N. Y.— CR, I
HEINTZ & KAUFMAN, South San Francisco, Calif.,

"Gammatron" — T
HYGRADE SYLVANIA CORP.. 500 Fifth Ave., New

Yqrk, N. Y., "Sylvania" — R, VC
HYTRON CORP., 76 Lafayette St., Salem, Mass.,

"Hvtron" — I. R, T
KEN-RAD TUBE & LAMP CORP., INC., Owensboro,

Ky., "Ken-Rad"— R

A TRADE-MARK

which is a

HALLMARK

in the

RADIO INDUSTRY

It is your assurance of quality of ma-
terials, reliability of service and fairness
of price. Listed below are typical radio
products from the complete line on which
you can tret these plus factors when you
specify Consolidated.
RADIO WIRES

Hook-up wires — including Hi-Temp
(75°C) colored rubber, bearing Under-
writers' label.

Multiple conductor cables — cotton,
shielded or rubber sheath.
Magnet wires.

Bare and. Tinned copper wires.
Shieldings — bare or tinned.
Antenna Wires — rubber or cotton.
Special wire for built-in antennae.
AERIAL KITS

Specially designed kits for all standard
receivers, including high efficiency doub-
lets. Special kits on order.
AERIAL ACCESSORIES

Ground clamps, lead-ins, niters, light-
ning arresters, porcelain or glass in-
sulators, etc.
CONDENSERS

Electrolytic and By-pass.
COILS

I.F., R.F., Antenna, Oscillator coils in
air core or iron core types. Mica
trimmed or permeability tuned units.
VOLUME AND TONE CONTROLS
RESISTORS, Carbon Fixed
AUTO RADIO AERIALS

Whip, top, running board, overhead,
undercar types.
AUTO RADIO ACCESSORIES

Lead-ins, suppressors, controls, escutch-
eons, etc.
AERIAL AND LINE NOISE REDUCERS
TEST EQUIPMENT

Dynamic conductance tube testers,
"Magic Eye" tester, neon output meter,
condenser analyzer, etc.
PUSHBUTTON TUNING UNITS
ELECTRICAL CORDS

AC-DC resistance cords, etc.
AUTOMOTIVE WIRES

Rubber, lacquered, armored (primary
and secondary) — shielded wires, etc.

All Consolidated products are fully

guaranteed.

"The Protected Line"

OH$OPWA^0P

OAPOaA'TWNS

516 S. Peoria St. Chicago, 111.

F. LOEWENBERG. 10 E. 40th St., New York. N. Y.,

"Electrocell" — PC
NATIONAL UNION RADIO CORP. OF N. Y.. 570
Lexington Ave., New York, N. Y., "National Union"
— CR. I. PC. R
NEW YORK SUPPLY CO.. 152 W. 42nd St.. New

York. N. Y., "York" — R
PHILC0 RADIO & TELEVISION CORP., Tioga & C

Sts., Philadelphia, Pa., "Philco"— R
PH0TR0NIC — Weston Electrical Instrument Corp.
RADIOTRON DIV., RCA Mfg. Co., Harrison, N. J.,

"Cunningham," "RCA Radiotron," "RCA-Victor"—

CR. I. PC, R. T, VC
RAYTHEON PRODUCTION CORP., 420 Lexington

Are., New York, N. Y.— R, T
RCA RADIOTRON— Radiotron Div., RCA Mfg. Co.
RCA-VICTOR— Radiotron Div., RCA Mfg. Co.
SPARKS-WITHINGTON CO., E. Ganson Ave., Jackson

Mich., "Sparton" — R
SPART0N — Sparks-Withington Co.
SUPERIOR TUBE CO.. Norristown. Pa. — Tube parts
SYLVANIA— Hygrade Sylvania Corp.
TAYLOR TUBES, INC., 2341 Wabansia Ave., Chicago,

III., "Taylor"— I, T
TRIAD MFG. CO.. INC., Blackstone & Fountain Sts.,

Pawtucket, R. I.. "Triad" — R
TUNG -SOL LAMP WORKS. INC.. Radio Tube Div..

95 8th Ave., Newark, N. .1.. "Tung-Sol ' — R
UNITED ELECTRONICS CO., 42 Spring St., Newark,

N. J.— T
UNITED MOTORS SERVICE. 3044 W. Grand Blvd.,

Detroit, Mich., "Delco" — R
VICTOR— Radiotron Div.
WESTERN ELECTRIC CO., 195 Broadway, New York.

N. Y.. "Western Electric" — CR, T
WESTINGHOUSE ELECTRIC & MFG. CO., East Pitts-
burgh, Pa.— I
WESTON ELECTRICAL INSTRUMENT CORP., 614

Frelinghuysen Ave., Newark, N. J., "Photronic"—

PC
WORLD BEST0S CORP., 52 Courtland St., Paterson,

N. J.. "Duresite" — PC
YORK— New York Supply Co.
ZENITH RADIO CORP.. 6001 Dickens Ave., Chicago.

111.. "Zenith"— R

WIRE

Antenna (receiving) A

Antenna (transmitting) AT

Antenna transmission (receiv.) ■ ■ AN
Antenna transmission (trans.) ■ • ANT

Concentric cable CC

Cords (attachment) ....... CO

Flat woven cable FL

Guy G

Hook up HU

Insulated cable (multi-conductor) ■ IC

Litzendraht L

Magnet M

Mike cable MC

Radio harness H

Resistance R

Resistance cords RC

Shielded S

Shielded ignition SI

Wire shield WS

ACME WIRE CO.. New Haven, Conn.— A, L. M
ACORN INSULATED WIRE CO.. 225 King St.,

B klyn. V Y. AN. ANT. Ill', IC. MC, S

ALDEN PRODUCTS CO., 715 Center St., Brockton,

Mass.— CC, CO, FL, IC, MC, H. R. S
ALPHA WIRE CORP.. 50 Howard St.. New York,

N. Y — A, AT. AN. ANT, CC, CO, FL, G, HU, IC.

M. MC, H. RC, S, SI
AMERICAN ENAMELED MAGNET WIRE CO., Port

Huron. Mich— A. HU, M
AMERICAN PHENOLIC CORP.. 1250 W. Van Buren

St.. Chicago. 111.. "Amphenol" — CC, SI
AMPHENOL-American Phenolic Corp.
AMPERITE CO., 561 Broadway, New York. N. Y

— MC
ANACONDA WIRE & CABLE CO., 25 Broadway. New

York, N. Y— A, AT. AN, ANT, CC, CO, FL, G.

HU, IC, M. MC, S. SI
VICTOR J. ANDREW. 7221 S. Francisco Ave., Chi-
cago. III.— CC
BASSETT RESEARCH CORP., 211 Service Court,

South Bend, Ind.— CC
BELDEN MFG. CO., 4647 W. Van Buren St.. Chicago.

111.— A. AT, AN. ANT, CO, FL, HU. IC, L. M.

MC, RC. S, SI. WS

BIRNBACH RADIO CO., 145 Hudson St., New Yorls.

N. Y— A, AN, HU, IC, M, S
DAVID B0GEN CO., INC., 663 Broadway, New York.

N. Y.— MC, S
L S. BRACH MFG. CORP., 55 Dickerson St., Newark.

N. J.— A, AT, AN, ANT, FL, G, HU, IC, S, SI
CONSOLIDATED WIRE & ASSOC. CORPS., Peoria &

Harrison Sts., Chicago, 111. — A, AT, AN, ANT, CO,

H, IC, M, MC. RC, S, SI. WS
CONTINENTAL WIRE CO., 110 Lafayette St., New

York, N. Y., "Continental"— A, AT, AN, ANT, CO

HU, IC, M, MC, RC, S, SI
COPPERWALD STEEL CO., 9th St. & Allegheny Ave.,

Glassport, Pa.— A, AT, AN, ANT
C0RD0HM— Ohmite Mfg. Co.
CORNISH WIRE CO., INC., 30 Church St., "Cor-

wico" — A, HU
C0RWICO— Cornish Wire Co., Inc.
CRESCENT INSULATED WIRE & CABLE CO., Tren-
ton, N. J., "Crescent" — A, AT, AN, ANT. CO,

HU, IC, L, M, MC, H, S
DIAMOND BRAIDING MILLS, Chicago Heights, II!.

—CO, HU, IC, MC, RC, S
DRIVER-HARRIS CO., Harrison. N. J.— R

RIOR

uivi

TUBING

We make fine, small SEAMLESS
TUBING in various metals and al-
loys— and LOCKSEAM CATHODE
SLEEVES under U. S. Patents.

Also BRAWN MONEL TUBING—

corrosion - resisting and compar-
able to seamless in physical char-
acteristics, but lower in price.

Our customers order and re-order
year after year because they have
found that they can depend upon
us to meet specifications, make
prompt deliveries and give them
every possible advantage in price.

We'd like to do as much for you.

Superior Tube Company

Norristown, Pennsylvania

High Value!
lLoiv 'Prices I

ALL GUARANTEED

FOR THHEE MONTHS
---p. SEALED CARTONS

i 1C7G ...$.45 6A8 $.35

S^ C*- , 1H4G ... .35 6C5 35

^SS^^^Z- IV 30 6F5G ... .35

•i,NS^rrrr^ 6A7 35 6K7G ... .35

u0BK 6F7 40 6Q7G ... .35

t ;„.£ 25Z5 ... .35 25L6G .. .35

I lU" 41 30 1E5G ... .45

V „*-. 42 30 6L6G ... .45

''<* "■: 55 20 6G5 35

5 We have :i complete line
of tubes. Write for prices.

NEW YORK
RADIO SUPPLY CO.

132 W.42d St.,R.T.,N.Y.C.

R4DJO YEAR BOOK

For line matching or auto transformers
between antenna and receiver.

Surge Power Maximum Capacity per Ft.

Frequency Impedance Factor Between Condr. Between
(gjtocycjasj (Poms? (Per Cent) ami Shield Conductors

68.9
70.0
73.2

64.5 mmf
63.0 mmf
62.0 mmf
57.5 mmf
55.0 mmf
50.5 mmf

Wire for radio is a highly specialized product. Like a medical cure, it should
only be used by experts — who know all of its characteristics. The Belden Cata-
log gives you, the radio specialist, this information clearly and honestly.
Belden products live up to these standards— to do justice to your service work.

You Ought
to Know

What's in this
complete
wiring

Clear Channel
All-Wave Antenna Systems

•

Power Line Filters
Broadcast Aerial Kits

Aerial Wire

•

Arresters, Lead-in Strips,
Ground Clamps

•

All-Rubber Lead-in Wire
Transmission Line Cables

Coaxial Cables

•

Microphone Cable

Shielded
Rubber Sheathed

•

Shielded Multiple Conductor Cable

•

Glazed Cotton Multiple

Conductor Cable

•

Rubber Sheathed Multiple
Conductor Cable

Communicating System Cables

Armored Speaker Cable

All-Rubber Lamp Cord

Hook-up Wire

Magnet Wire

Replacement Wires for Test Prods

Litz Wire

Terminals

Indoor' Aerial Wire

Head Phone Cords

A-C— D-C Resistance Cords

Auto-Radio Wires and Cables

You Ought,
to Know

What's behind <j^|
the line ^ ■
to help you sell

C&Hfers

enna Check-up

Week

Remember National Antenna Check-
up Week?

Remember the posters, the but-
tons, and the big national advertising
program to sell set owners on all
kinds of radio service — by radio
servicemen?

It was sponsored by Belden, of
course. Belden 's
v"I I National Ad-

vertising con-
tinues with a
regular schedule during 1939. It will
help you sell better wiring jobs
and profitable antenna installations.

Belden Manufacturing Company,
4613 West Van Buren Street, Chicago, III.

DON'T GO HAYWIRE-GO

Belden

The Radio
Wiring Line

MARCH, 1939

WIRE— Cont'd

ESSEX WIRE CORP., 14310 Woodward A?e., Detroit,

Mich., "S-X"— A, CC, CO, HU, IC, L, M, MC,

H, RC, S, SI
GENERAL CABLE CORP., 420 Lexington Ave., New

York, N. Y.— A, HU, M, MC, H
GENERAL CEMENT MFG. CO., 611 Lincoln Ave..

Rockforrt, 111., "G-C" — CO, FL, R
GENERAL INSULATED WIRE CORP., 53 Park PL,

New York, N. Y.— CC, CO, HU, Id MC, S
E. I. GUTHMAN & CO., INC., 400 S. Peoria St.,

Chicago, 111.— L, M
HOKE VERTICAL RADIATORS, 135 S. Market St.,

Petersburg, Va. — A, AT, AN, ANT, CC, G, IC
HOLYOKE CO., INC., 720 Main St., Holyoke. Mass.

— IC
HUDSON WIRE CO., Winsted Division, 981 Main St.,

Winsted, Conn. — L, M
ISOLANTITE, INC., 233 Broadway, New York. N. Y.

— CC.
INSULINE CORP. OF AMERICA, 25 Park Place, New

York, N. Y.— HU, IC, B, RC, S, SI

■%>'

**,V

THE

THEORY

OF
RADIO
SERVICE
WORK

Priceless Knowledge
at your Command

f&te^-Ute BRAINS

ALL IN 1 BOOK

Everything you need to know
about the theory of radio service
work is explained to you in this
big Ghirardi book. It teaches you
exactly HOW to do every step of
it— and WHY. Learn up-to-
date factory servicing methods
from the experience of leading
service organizations — condensed
and simplified for you in this
convenient source-book.
BASIC FUNDAMENTALS

Here in compact form is your
complete background in test in-
struments— how they work — how
to use them; trouble-shooting; re-
pair method*; and everything else
essential for a thorough knowl-
edge of modern radio servicing.
Ghirardi makes it ail wonder-
fully clear and easy to under-
stand. With this solid founda-
tion you will be prepared to
tackle and solve the most difficult
servicing problems you'll ever
meet. Make yourself a better,
more successful service man. Get
your copy at once — with an ab-
solute MONEY-BACK GUAR-
ANTEE. Mail coupon today I

Ghirardi s

# Test Equipment

A 420-page flection.
giving you the whole
theory and construc-
tion of every type of
test and servicing
equipment. Diagrams .
construction data. etc..

•> Repairing

0 Trouble

254 pages

e elimina-
etc.

■Shooting

of latest
in tracking
ndsofdiffi-

oublei
(Special Problems

Wave set
deMty seti
QAVCcire
and Advei

i; High-Fi-
J AVC and
uiis: Selling
tisins; etc..

MODERN RADIO
SERVICING

I13O0 DP.* Radio & Technical Publ. Co
l__ _ ... I « Astor PL. Now York. Da

1706 illus.i a

MAIL
NOW!

. Dap*. RYB
;re is *4 ($4.50 foreign) for my copy
ofMODERN RADIO SERVICING.
I Here is $6.50 ($7 foreign), the "Special
Combination Price" for the above
book, together with Ghirardi'r
TROUBLE-SHOOTER'S HAND-
BOOK (see opposite ad).

NAME

ADDRESS

CITV

'STATE .>

O Please lend free literature > M
describing detailed contents of tX

MODERN RADIO SERVICING. ^w

SAVE MONEY!

by ordering MODERN RADIO
'SERVICING and RADIO
TROUBLE-SHOOTER'S HANDBOOK both together
at Special Combination Price — $6.50, shipped post-
paid in U.S.

KELLOGG SWITCHBOARD & SUPPLY CO., 6650 So.

Cicero Ave., Chicago, 111., "Kellogg" — CO, HU, IC
LENZ ELECTRIC MFG. CO., 1751 N. Western Atc,

Chicago, 111.— A, HU, M, IC, S
LOWELL INSULATED WIRE CO., 171 Lincoln St..

Lowell, Mass.— A, AT. CO, HU, IC
P. R. MALL0RY & CO., INC., 3029 E. Washington

St., Indianapolis, Ind., "Yaxley" — IC, MC, H
MEISSNER MFG. CO., Mt. Carmel, HI.— L
MUTER CO., 1255 S. Michigan Ave., Chicago, 111.,

"Spirashield" — WS
OH MITE MFG. CO., 4835 W. Flournoy St., Chicago,

111., "Cordohm"— RC
PHELPS DODGE COPPER PRODUCTS CORP., 40

Wall St., New York, N. Y.— A, AT, AN, ANT, CC,

CO, HU, IC, M
PHILMORE MFG. CO., 113 University PI.. New York.

N. Y., "Philmore"— RC
RADIO RECEPTOR CO., INC., 251 W. 19th St., New

York, N. Y.— ANT, CC
REA MAGNET WIRE CO., INC., E. Pontiac St., Fort

Wayne, Ind., "Rea" — M
JOHN A. R0EBLING SONS CO., Trenton, N. J.
RUPP'S ASSEMBLING & MFG. WORKS, 2341 N.

Seminary, Chicago, HI. — CO, IC, MC, H
SIMPLEX WIRE & CABLE CO., Cambridge, Mass.
SPIRASHIELD— Muter Co.

STATES CO., 19 New Park Ave., Hartford, Conn.— R
SWEDISH IRON & STEEL CO., 17 Battery PL, New

York. N. Y.— M
S-X — Essex Wire Corp.
TRANSDUCER CORP., 30 Rockefeller Plaza, New

York, N. Y., "Transducer" — CC
TRIANGLE CONDUIT & CABLE CO., INC., Horace

Harding & Queens Blvds., Elmhurst, N. Y. — A, AT,

AN, ANT, CC, IC
WESTERN ELECTRIC CO., 195 Broadway. New York,

N. Y.— CC, CO, S
YAXLEY— P. R. Mallory k Co., Inc.

SERVICE MANUALS & BOOKS

Acoustics A

Advanced theory AT

Beginners' theory BT

Electronics E

Interference elimination . . IE

Service manuals S

Sound systems . . . . SS

Television TEL

Tubes . . . T

AKRAD PRODUCTS CO., 362 Wooster Ave., Akron.

Ohio— BT, S
AMERICAN RADIO RELAY LEAGUE, W. Hartford,

Conn.— AT, BT, IE, T
P. BLAKISTON'S SON & CO., INC., 1012 Walnut

St., Philadelphia. Pa.
CALDWELL-CLEMENTS, INC., 480 Lexington Ave.,

New York, N. Y., "Radio Today," "Radio Year

Book"
CAMERON PUBLISHING CO., P. 0. Box 1386, Little

River, Miami, Fla.— A, AT, BT, S, SS
FREDERICK J. DRAKE & CO., 179 No. Michigan

Ave., Chicago, 111. — E, S
McG RAW- HILL BOOK CO., 330 W. 42nd St., New

York, N. Y— AT, BT, E
MACMILLAN CO., 60 Fifth Av'e.. New York, N.Y.— A
PACIFIC RADIO PUBLISHING CO., Pacific Bldg.,

Box 3278, San Francisco, Calif. — TEL
RADCRAFT PUBLICATIONS, INC., 99 Hudson St.,

New York, N. Y.— AT, BT, S
RADIO & TECHNICAL PUBLISHING CO., 45 Astor

PL, New York, N. Y.— A, AT, BT, IE, S, SS, T
RADIO, LTD, 7460 Beverly Blvd., Los Angeles, Calif.

—AT, BT. IE, T
RADIO TODAY— Caldwell-Clements, Inc.
RADIO YEAR BOOK— Caldwell-Clements, Inc.
JOHN F. RIDER, Publisher, 404 4tb Ave., New

York, N. Y.— S
SHERWOOD PRESS, Box 552, Edgewater Branch,

Cleveland, Ohio — IE, S
SUPREME PUBLICATIONS, 3727 West 13th St.,

Chicago. I1L— BT
UNITED CATALOG PUBLISHERS, INC., 260 Broad-
way, New York, N. Y.
D. VAN N0STRAND CO., INC., 250 Fourth Ave.,

New York, N. Y.
JOHN WILEY & SONS, INC.. 440 Fourth Ave., New
York. N. Y.

NEW PATENTS ISSUED

Central Communication Devices,
Inc., 140 W. 22nd St., N. Y. C, has
acquired sole manufacturing rights to
a patent allowing 15 claims. The prin-
cipal feature of the invention is in-
stantaneous two-way communication —
it converts from a call receiver to two-
way communication automatically with-
out a talk-and-listen switch. The device
is highly portable, using electric power
lines for transmission. Tests in mines
and steel plants have been successful
at distances from 2 to 6 miles.

W. G. H. Finch, pres. of Finch Tele-
communications Laboratories, Inc.,
N. Y. C, has been awarded a patent
on a new high-speed multiplex tele-

THE

PRACTICE

OF
RADIO
SERVICE
WORK

Brand
NEW-
^ and it's a

knockout:

ffetw-foii ata

READY FOR ACTION

New as tomorrow'a radio seta
io this latest Ghirardi service-
man's Handbook — a Handbook
that IS a Handbook! Data*—
•ay. it'a packed jam full of just
the kind of practical, tlma-
tavlnfl lorvldnf dope- you really
want in your ahop — loads of in-
dispensable, factory -checked serv-
icing data boiled down to the
real essentials — tabulated and
organised for split-second ref-
erence. And right up to the min-
ute.— even for the 1939 modelal

1 at Aid for Set Trouble*

Here, right at your finger tips-
are the answers to all the "tough

vcb<

onds to

of fiddling and fussing
on nara service jobs. You've just
got to see this new book! And
you won't have to take a single
chance, because with our MON-
EY-BACK GUARANTEE you
can return it within 10 days and
get your money refunded. Don't
fall behind. Don't let it slide.
ORDER YOUR COPY TODAYI

• Cm* Historic*

Trouble Symptoms and
remedies for over 2.000
•eta, compiled from actu-
al service records.

• l.-F. Peaks

Over 12,000 listings for
alignment of all super-
bets old and new. in-
cluding 1939 models and
"orphans. "

• Auto-Radio
Interference Elimination
for over 80 car models;
Installation and Car Ig-
nition System Data
Chart; Electrical Wiring
Diagrams; Gear Ratios
and Dial Directions of
Tuning Control*.

• Other Data
Trouble- Shooting
Charts: Servicing Re-
cat .ng Systems. P-ASya-
temt; Trade Directonea;
and over 30 other charts
and tables on Tubes.
Wire. Grid-Bias Resist-
ors. RMA Color Codes.
etc. Standard Manual

IT'SMEIV/
gttvlhi HANDBOOK

OVER
SOO
pages

MAIL
NOW!

■ Radio tV Tecnnlcal Publ. Co..

| 4S Astor PL.Naw York. Dopt. RYB

J n Here is *3 (J3.50 forcim) for n.y copy

■ ofRADIOTROUBLE-SHOOTER'S

■ _ HANDBOOK.

■ 0 Here is $8.50 ($7 foreign), the "Special

■ Combination Price' for the sbore
book, together with MODERN

RADIO SERVICING (seo op-
posit, ad).

NAME

A DDRES3

CITY

STATE

IPleaae send free literature
describing detailed contents of
RADIO TROUBLE-SHOOTER'S
HANDBOOK.

$3l

"BLE-SHOOTER'S HAND-
BOOK and MODERN RADIO SERVICING both to-
gether at Special Combination Price — $6.50, snipped
postpaid in U.S.

RADIO YEAR BOOK

t&ulfoj- MASTER
ENCYCLOPEDIA

r7Ui

REFERENCE
BOOK

•&'

it*«^

BUYING GUIDE
SALES CATALOG
ENCYCLOPEDIA

1939 EDITION — OVER 600 PAGES

THE ONLY OFFICIAL"
EQUIPMENT MANUAL
of the Radio Industry!

Compiled in cooperation with and approved by
Radio Manufacturers, this authentic source book of
over 600 pages is crammed full of vital, essential
information that is indispensable to everyone identi-
fied with Radio and allied lines.

GIVES THIS IMPORTANT DATA

The New 1939 Edition of Radio's Master Encyclo-
pedia is the most comprehensive ever issued. No other
book like it. Important data that you need in your
business — conveniently cross-indexed for split-second
reference. Thousands of illustrations, specifications
and prices on every conceivable type of Equipment,
Accessories, Parts; ranging from Tubes to Transmit-
ters, and including the latest in television tubes
and parts.

Contains Directory of over 1,000 Manufacturers
where located and what they make — gives index of
trade names.

••WHO USES IT?..

Universally used and accepted by Radio Jobbers
and Dealers, Amateurs, Service Men, Schools, Col-
leges, Libraries, Governmental Agencies, Industrial
Organizations, Purchasing Agents, Police Depart-
ments, Steamship Lines and many others connected
in any degree or interested in Radio.

SAVES TIME -SAVES MONEY

Radio's Master Encyclopedia is truly a complete
Radio and Equipment Manual all bound under one
cover, taking the place of files and files of miscel-
laneous catalogs and information. WHERE — WHAT
—HOW MUCH, instantly at your fingertips! Thou-
sands in everyday practical use proving invaluable
and unsurpassed as a REFERENCE BOOK, SALES
CATALOG or BUYING GUIDE.

MONEY BACK GUARANTEE!

Radio's Master Encyclopedia, now in its third year,
has served the industry well. That's why, with com-
plete confidence, we are ready to send it to you on
an absolute "Money Back in 5 Days" Guarantee, if
you are not 100% satisfied. To save the cost of
transportation, send your remittance with order —
$2.50 in U.S.A., $3.00 Elsewhere. Or if you prefer,
we will ship C.O.D. plus postage charges — in either
case, our "Money Back in 5 Days" is your assurance
of complete satisfaction.

UNITED CATALOG PUBLISHERS hc

260 BROADWAY. . . NEW YORK, N. Y.

communication system which enables
the utilization of two or more carriers
for simultaneous transmission of pic-
tures, printing telegraphy, or teleg-
raphy and speech or pictures and
speech to remote points, through the
use of simple apparatus which can be
easily coupled to any telephone line.

Patents on a new fast facsimile sys-
tem have also been granted W. O. H.
Finch. The new system is three times
faster than the old, Finch reports.

SduHefa

New Sylvania display

yOVRffflf0>

LIKE TOUR CAR-

700/

$YLYANIA

RADIO TUBES

An attractive display is being dis-
tributed by Hygrade Sylvania jobbers
to servicemen. It comes in two sizes,
the large is for window and the small
for counter display. The display is
printed in eight colors and is designed
to help the dealer and servicemen sell
their services.

Corner cab/net booster

To help dealers push sale of corner
cabinet line of radios, Stromberg-
Carlson has developed a new display.
It consists of two hinged wings cov-
ered with wall paper, held in right
angles by two gold-foil covered bars.
The cross-bars contain the copy mes-
sage and rest on a corner cabinet,
which fits snugly between both wings.
The wings give the effect of a room
corner and saves dealer space.

A Bantam buy

Assortment of 6 Hytron bantam
tubes in a single package, handles re-
placement for 18 tube types. One each
of following; tubes: 6A8GT. 6J7GT.
6K7GT, 6Q7GT, 25L6GT, 25Z6GT, in
individualy-sealed cartons. Dealers' net
price of $2.39. Shields are supplied
for tubes needing them. Packaged by
Hytron Corp., 76 Lafayette St., Salem,
Mass., to simplify dealers' and service-
men's needs.

o* 1939

John F. Rider, recognizing the dif-
ficulty presented by the many de:
velopments in Radio will, during the
year, release a long list of new
books especially written for the
serviceman. Know Theory! Keep
Ahead of a Fast Moving Industry.

Books on this timely subject will cover
all phases — including Light — Photo-
Electric. Cells — Synchronization.

liaALb fajcAimJ&i

The high state of development in this
field makes it necessary that you know
its theory. Rider will give it to you.

liaALb SiAAjixjuw

There will be SIX new books that will
tell, in the easy to understand Rider
style, how to save time in servicing.

UAi/L OKLOWI/lL

Rider Manual Volume X will be issued

in the Fall — covering 1939-40 sets.

Many New Features!

404 Fourth Ave.
New York City

MARCH. 1939

When writing advertisers, please say you saw it in the 1939-40 RADIO YEAR BOOK

Use

WEBSTER-CHICAGO

ACCESSORIES in your

PHONOGRAPH DESIGNS

A Complete Line of

Automatic Record Changers,

Pickups and Motors —

Economically Priced

Model 10

Automatic

Record

Changer

ton 12" records
# Plays twelve 10 or ten has

•repeats last record Price- plus many
all features of other cnany The

exclusive WMfl" Dependable and

Seropefate^Htinwei^tand

compact in size.

Model

R-16

Rim Drive

Motor

---■^^^^^^^Ipiivelv as ordinary
# Does the job as **!$ ice as much.

*otors costing Sle Sractically noise-

Thoroughly dependable prg 01?.

,ess and v^rat.onless^ Sei SuppUed ,n

stant speed, no

variety of voltages and cycles.

Model 81
Pick-up

fmploying the ^"ffia. W'th;

^S'to^caf^osition for easy
insertion of needle.

Webster-Chicago phonograph accessories are up-
to-the-minute designs, incorporating the latest
features in fidelity reproduction, long life, free-
dom from service troubles, compact size and
are thoroughly modern in appearance. The rela-
tively low prices in both small and large quanti-
ties will surprise you. Complete details on request.

WEBSTER-CHICAGO

The Complete Line of Public Address Sys-
tems. Sound Equipment and Accessories
. . . Popular Priced Leaders in the Sound
Field for Over 13 Years.

THE WEBSTER COMPANY
5622 Bloomingdale Ave., Chicago, 111.

VIBRATORS

Auto radio A

Farm radio F

Inverters INV

AMERICAN TELEVISION & RADIO CORP., 300 E.

4th St., St. Paul, Minn., "ATR"— A, F, INV
ATR — American Television & Radio Corp.
DELCO APPLIANCE DIV., General Motors Sales

Corp., 3.91 Lyell Ave., Rochester, N. Y. — A, F

ELECTRICAL PRODUCTS CO., 6537 Russell St., De-
troit, Mich.— A, F, INV

ELECTRONIC LABORATORIES, INC., 122 W. New

York St., Indianapolis, Ind., "Electronic" — INV

EXCEL — Hickok Electrical Instruments Co.

KICKOK ELECTRICAL INSTRUMENTS CO., 10514
Dupont Ave., Cleveland, Ohio, "Excel" — A

P. R. MALL0RY & CO., INC., 3029 E. Washington

St., Indianapolis, Ind., "Mallory" — A, F, INV
MEISSNER MFG. CO., Mt. Camel, 111.— A, F

OAK MFG. CO., 711 W. Lake St., Chicago, 111.,
"Oak"— A, F

RADIART CORP., Shaw Ave. at 133rd St., Cleveland,
Ohio, "Radiart" — A, F

UTAH RADIO PRODUCTS CO., 820 Orleans St., Chi-
cago, 111., "Utah"— A, F

WAX WORTH
WATCHING

COUNT BASIE and his orchestra in a typically wild
rhythm fest, playing Panassie Stomp and Do You Want
to Jump, Children? The VC is bv James Rushing —
Decca 2224.

LARRY CLINTON and his band in a particularly
sultry version of Deep Purple, with Study in Red on
the reverse side. Bea Waine VC's — Victor 26141.

ARTIE SHAW and his boys come through again with
Jungle Drums and It Had to Be You. A typical Shaw
arrangement — Bluebird B 10091.

BING CROSBY backed by John Scott Trotter and

his band records a smooth number in the popular old

Lonesome Road, and Just a Kid Named Joe — Decca
2257.

BENNY GOODMAN is backed by an All-Star band
in his recording of Blue Lou and The Blues. Here's
blues done up brown — Victor 26144.

MAXINE SULLIVAN comes through with the ever
popular Night and Day and It Ain't Necessarily So —
Victor 26132.

CHICK WEBB and his orchestra heats up a nice
wax in Gotta Pebble in My Shoe and Who Ya
Hunchin'. The VC is styled by Ella Fitzgerald —
Decca 2231.

AL DONAHUE gets his boys in the groove on
Tattoed Lady with the vocal by Paula Kelly, and
Alexander's Swingin' — Vocalion 4562.

GUY LOMBARDO and bis Royal Canadians smooth
out current favorite, The Umbrella Man, sung by the
trio; and We Speak of You Often, with Carmen Lom-
bardo on the VC — Decca 2221.

WILL OSBORNE and his band put the trombone
trio through their paces in Anywhere I Hang My Hat
and Just a Kid Named Joe. Will himself does the
VC— Decca 2225.

"FATS" WALLER, backed by bis band, riffs up the
piano in San Anton' and Baby Brown — Bluebird
10109.

DUKE ELLINGTON and his orchestra go wild on
Boy Meets Horn, with Rex Stewart singing: and
Old King Booji— Brunswick 8306.

TOMMY DORSEY and his orchestra playing a choice
version of Hold Tight, with VR by Skeets Herfurt and
Symphony in Riffs — Victor 26163.

ANDREWS SISTERS, with Boh Crosby and his Bob
Cats, really singing Begin the Beguine and Long Time
No See — Decca 2290.

RUSS MORGAN and his orchestra having a time with
Eli Green's Cake Walk and Goodbye My Lady Love
— Decca 2266.

DICK TODD with orchestra singing Penny Serenade
exactly right, and Little Lad, both with "The Three
Reasons" as the girls' trio — Bluebird BIO 14 4.

ATR

/IftMOustced

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Inverter Vibrators

NEW DESCRIPTIVE CATALOG

NO. 139 NOW READY
Write Today for Your Free Copy

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Layout suggestions free
•
Below — Showcase No. 10G —
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Display portion of polished
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Bottom fitted with accessory
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Price $85, uncrated, F.O.B.
factory — $5 crating charge.

Above— Unit No. ' 101— The
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Lower part — for record or
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American Walnut veneer
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27-01 ItKIDGE PLAZA NORTH,
LONG ISLAND CITY, N. Y.

Specialists in store modernization and store equip-
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RADIO YEAR BOOK

Mmkim md fmskmk &Mm$

Television Stations

Call

Wave
Length

Power in KW
Video Audio

Boston, Mass W1XG

Bridgeport, Conn W1XA

New York, N. Y W2XAX

New York, N. Y W2XBS

Camden, N. J. (Portable) 1 wov„~

New York, N. Y } W2XBT

Long Island City, N. Y W2XDR

Passaic, N. J W2XVT

Schenectady, N. Y. W2XD

Albany, N. Y W2XB

Camden, N. J., (Portable) W3XAD

Philadelphia, Pa W3XE

Camden. N. J W3XEB

Philadelphia, Pa W3XP

Springfield, Pa W3XPF

Los Angeles, Calif W6XAO

Manhattan, Kansas W9XAK

Kansas City, Mo W9XAL

W Lafayette, Ind W9XG

Iowa City, Iowa W9XK

Iowa City, Iowa W9XUI

Chicago, 111 W9XZV

Mobile— Portable W10XX

6I/2& 4
6 1/2 & 4
6V2& 4
6V2&4

3& 1M
6i/2 & 4
6V2
IK
4

2y2

6V2&4
6V2&4
m

6V2 & 4
51/2 & 4

150

6V2&4
150
150

6V2&4
6V2 & 4
6J4 & 4

>/2
10
7>/2
12

0.4

.05

.04

10
30

.015

Vt
0.3

1H
1

.05

71/2
15

0.1

.05

10
30

0.15

.05

Bold face type shows stations operating on 4 and 6V2 meter bands.

Facsimile Stations

BROADCAST BAND-
EARLY MORNING HOURS ONLY

Location Station Frequency Power

Fresno, Calif KMJ 580 kc 1 kw

Sacramento, Calif KFBK 1490 kc 10 kw

Chicago. Ill WGN 720 kc 50 kw

Des Moines, Iowa WHO 1000 kc 50 kw

Detroit, Mich WWJ 920 kc 5 kw

St. Paul, Minn KSTP 1460 kc 25 kw

Newark, N. J WOR 710 kc 50 kw

Buffalo. N. Y WBEN 900 kc 1 kw

Cincinnati, Ohio WLW 700 kc 50 kw

Cincinnati, Ohio WSAI 1330 kc 5 kw

Cleveland, Ohio WCLE 610 kc 500 w

Cleveland, Ohio WHK 1390 kc 1 kw

Nashville, Tenn WSM 650 kc 50 kw

Newport News, Va WGH 1310 kc 250 w

SHORT WAVE

Detroit, Mich W8XTY 8 metres 150 w

Jackson, Mich W8XUF 8 metres 100 w

St. Louis, Mo W9XSP 8 metres 100 w

St. Louis. Mo W9XZY 8 metres 100 w

Sargents Purchase, N. H W1XMX 8 metres 500 w

Long Island City, NY W2XR 150,8,3 m. 1 kw

New York, N. Y W2XUP 8 metres 100 w

New York, N. Y W2XBF 8 metres 1 kw

Cleveland, Ohio W8XE 8 metres 50 w

Cincinatti. Ohio WXNU 8 metres 1 kw

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A.C. Volts— 0-15-150-1500
O.C. MA.— 0-1-10-100-1 Ampere

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9" Round D'Arsonvai (1000 ohm per volt) Meter

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A.C. Volts— 0-15-150-750

D.C. MA.— 0-1-15-150-750

A. C.-MA— 0-15-150-750

Capacity — ,0005-lmfd.. .05-200 mfd.

Ohms — 0-500. 500-5 Meghoms

Decibels 10-19 —10^38. —10 + 53

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Watts— .006000 to 600
Housed in Leatherette Cabinet
Model 740 Complete

Portable Cover $1.00 Extra

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NEW YORK CiTY, N. Y.

MARCH, 7939

O wide awake radio dealers, Cla-
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offers ■ the greatest opportunity, to
profit on sound sales, in the history
of the industry. The C.I.S.E. Plan
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69 WOOSTER STREET, NEW YORK CITY'

j CLARION INSTITUTE of SOUND ENGINEERS
, 69 WOOSTER ST. NEW YORK. N.Y.

RT339
I Please send a C.I.S.E. application im-
I mediately. This, in no way obligates
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| Name
' Address

City State

Smite Hetes

Aeroscope antenna

Loop antennae were used on some
of the first broadcast receivers, but
as the first antennae of this type were
large and cumbersome and would not
fit into the cabinets, their advantage
was offset by the inconvenience they
presented.

To eliminate the troublesome an-
tenna wire and to make the small sets
as nearly portable as possible the engi-
neers have developed small shielded
loops which also effect a distinct re-
duction in local static disturbances,
and an increase in selectivity.

There are three factors that effect
the signal pickup of the loops, accord-
ing to Admiral's engineers.

1. The physical dimension. The mean
dimension must be as large as
possible for the best signal pick-
up; also the loop must be sturdily
constructed in order not to disturb
the alignment of the set.

2. Q of the loop. The coil must also
have good electrical qualities
known as Q. The higher the Q.
the better the selectivity.

3. Effect of metal chassis. To elimin-
ate the effect of the close proximity
of the chassis, a plate of non-mag-
netic material is placed between
the loop and the chassis. This also
serves as one side of an electro
static shield.

Noise reduction is obtained in two
ways, by the directional properties of
the Aeroscope, and the use of the elec-
trostatic shield.

By placing the set so that the noise
source is at right angles to the flat
surface of the loop, or zero response, a
large increase in signal to noise ratio
is obtained. The shield prevents elec-
trostatic charges from making a cir-

cuit through the antenna to ground by
shunting them into the ground direct-
ly, at the same time allowing magnetic
waves to reach the loop.

In remote sections where the pick-
up on the loop would not be adequate
for reception of distant stations, an
outside antenna may be used, as the
Aeroscope provides for its use. A very
good antenna is necessary in order to
show any improvement in signal pick
up of an electrostatically-shielded loop.

Round-table discussion

Rubbing shoulders with radio ser-
vicemen from coast to coast . . . fre-
quently addressing gatherings here
and there . . . always ready to listen
to the problems of servicemen and
to advise them — Charley Golenpaul
of Aerovox picks up a lot of ques-
tions in the course of a month, some
of which are answered below:

Q. Why do set manufacturers des-
ignate their component parte by their
own part numbers? Why don't they
state the characteristics?

A. The answer to this question is
quite obvious. Set manufacturers
identify their parts by special parts
numbers in order to compel service-
men to go to their own set distribu-
tors for necessary replacement parts.
Otherwise the serviceman would go
to any parts jobber and secure any
standard type condenser of about
those characteristics, to use as a re-
placement. From the set owner's
standpoint, this exact-duplicate pol-
icy of set manufacturers as well as
certain condenser manufacturers, as-
sures a replacement which will re-
store the set to its original new con-
dition. This is the purpose of special
type numbers.

SUPER RADIO SERVICE

NEW LOW RATES

Tubes Tested Free

SO ■ All Parts Needed
Carried in Stock

EVERY JOB
GUARANTEED

ON ANY MAKE
QUICKER SERVICE COMPLETE NEW EQUIPMENT

PHONE 1266

INSTANT
SERVICE

These Art the Merits Upon
Which We Invite Patronage:

I. We employ berjest, well experienc-
ed ta&nfei»U

2. We buy wily trie very best mate-
ria)* and equipment. ,

£ Wk do not tolerate afiisrtprWent-
mil (statements or charges to onr

i. If we make s mistake W£ MAKE
IT GOOD r*ffir<}l*B*,

5, We cbar*« HONESTLY for what
services we perform.

6. We juaraptee all work-, 'and that
no parts are y»*d urtleM needed.

•'OLDEST, LARGEST AND BEST EQUIPPED SHOP IN AUGUSTA"

AUGUSTA RADIO COMPANY

316 NINTH STREET

TELETHON

ROBT. W". WILSON, Owner

In medium-sized cities, newspaper advertising brings good returns according to
Bob Wilson, whose advertisement is shown above.

RADIO TODAY

Q. How can we overcome competi-
tion of certain mail order and other
houses that sell direct to consumers?
Especially the sale of replacement
parts to set owners who are trying
to by-pass the servicemen? What do
manufacturers do to protect the ser-
viceman against this competition?

A. A good question — and one fre-
quently asked. Too much stress is
placed on this so-called competition
which, upon analysis, dwindles down
to almost nothing. Let's get spe-
cific: Of course reputable parts man-
ufacturers make every reasonable
effort to safeguard your trade prices
and discounts. It's to their best in-
terests to do so. Houses handling
such parts are urged to sell at regu-
lar prices and discounts, so that all
jobbers get an even break. But when
it comes to sorting servicemen from
non-servicemen, there's the rub. Re-
member, even at this late date, most
servicemen still have no printed busi-
ness stationery. So if the mail-order
or other house receives an order by
mail for replacement parts, expressed
in genuine servicing language, even
to specific types, values, etc., how can
it know that this is not a genuine
serviceman's order. It simply can't.

The greatest thing you as a service-
man have to sell is your SERVICE,
and not merchandise. In other words,
it's your knowledge and skill that
count most in servicing. It isn't so
much your ability to buy parts at
trade discounts. If parts are bought
at wholesale prices by someone who
is not entitled to the trade discount,
in most cases that someone doesn't
know how to install the parts, and

the genuine serviceman may eventu-
ally be called in to fix the set any-
way. If you will only stop to con-
sider that of all the customers whose
sets you've serviced since you have
been in business, very few of them
really were capable of making their
own repairs.

In short, don't waste time worry-
ing about that so-called mail-order
or other competition on discounts.

A GOOD NAME
\ GOES hA

LONG WAY

Ken-Rad makes a complete line of qual-
ity radio receiving tubes, backed by a
continuous record of over 40 years in
the manufacture of electric lamps.
KEN-RAD TUBE & LAMP CORP.
0WENSB0R0. KENTUCKY, U.S.A.
Address: Export Dept.,
116 Broad St., New York, U.S.A.
Cable Address: Minthorne, N. Y.

EN- RAD

DEPENDABLE RADIO TUBES

MARCH. 7939

.V^S^"

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100 SIXTH AVE., NEW YORK, N. Y.

CHICAGO, ILL. • ATLANTA, 6A. • BOSTON, MASS.
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WORLD'S FAIR

accommodations "E*"D 157 "BE* f
arranged * M&Mb ML •

Not one cent of extra cost for this
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BUSINESS GROUPS • PRIVATE PARTIES
INDIVIDUALS
— a service covering room reser-
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RETURN TRANSPORTATION, etc.

We are expert VISIT-MANAGERS.

You can profit by the experience of millions
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You can plan your visit intelligently and
sensibly with our aid and without obligation.

SIX DAY TOUR, with room assured, includ-
ing 3 admissions to World's Fair, Motor
Coach and Boat Trip around New York,
complete Guided Tour of Radio City and
Rockefeller Centre — $16.95 PER PERSON.

If you want more time to play and more
money to spend, let us arrange or manage
your visit.

MAIL THIS COUPON

Central Sightseeing Bureau, Inc.
55 West 42nd Street, New York

Send full details as follows:

Number of persons in party

Length of visit

Traveling by —

□ Automobile □ Bus □ Air □ Boat □ Rail

My name

Company name

Street address

City State

Smite ticks

Your main worry is to be sure you
can tackle servicing with the neces-
sary skill, experience, and test equip-
ment.

Q. What are we going to do about
the serviceman who under-sells the
other fellows because he uses in-
ferior parts?

A. This is another instance of a
problem which eventually solves it-
self. Such a serviceman should be
allowed to take all the business he
can get temporarily, hard as that
may be, because he eventually runs
himself out of business by virtue of
his work not standing up. The qual-
ity is remembered long after price is
forgotten. Reputation, in the long
run, is your main stock in trade and
the very best advertising you can do,
particularly in a small community.
So let the service gyp sell at lower
prices by reason of cheap parts. His
customers will eventually come to
you to get satisfactory service.

Do you remember when?

It's only a few years ago that radio
servicemen were complaining about
the unnecessarily great number of tube
types, which then totalled thirty-one.
The date is October 17, 1931, according
to a Sylvania price list which was dis-
covered in our files.

Thinking that the servicemen would
be interested in the listing and the
prices, Radio Today is reproducing the
data:
Old Type

No.
SX-112A
SX-120
SX-171A
SY-171C
SX-182B
SX-183
SV-199
SX-199
SX-200A
SX-210A
SX-210
SX-222
SY-224
SX-226
SY-227
SX-230

In 1931 there were only 4-prong and
5-prong tube bases to worry about.
Even in 1939 more than 50 per cent of
the replacement tubes sold are taken
from this group of 31 tubes listed above
and most of this volume is being done
in only 10 different tube types.

RSA news

A television demonstration and a
technical lecture will be two of the
high spots at the biggest serviceman
convention ever staged when RSA
members meet in their Second Annual
Convention June 16 and 17.

The National Radio Parts Trade
Show has set aside Friday and Sat-
urday as days when technical attend-
ants will be in the booths to answer
servicemen's questions and show their
wares. Arrangements are being made
for reduced fares on railroads and bus
lines from chapter cities.

"Present and Future Possibilities of
the Serviceman" was the subject of
a recent talk by Sam Harper of the
Clough-Brengle Company at the Allen-

1931

1939

Old Type

1931

1939

Price

No.

Price

$1.50

$1.00

SX-231

$1.60

$1.00

3.00

2.25

SX-232

2.30

1.75

.90

1.00

SV-233

2.75

1.50

2.75

1.00

SY-235

1.60

1.25

2.25

2.00

SY-236

2.75

1.25

2.00

SY-238

1.75

1.25

2.75.

1.50

SY-239

2.75

1.25

2.50

1.50

SX-240

3.00

1.00

4.00

2.25

SX-245

1.10

1.00

.75

.SO

SY-247

1.55

1.50

7.00

2.75

SX-250

6.00

2.50

3.00

2.00

SX-280

1.00

1.60

1.25

SX-2S1

5.00

2.25

.SO

.80

SY-4S5

1.75

2.00

1.00

.SO

SY-551

1.60

1.25

1.60

1.00

"I wanna get it fixed, but I'm a
plumber's helper, so you've got to
give me 40 per cent off on the parts."

town, Pa., chapter. Mr. R. Perron of
the same company addressed Boston
members on "Dynamic Testing."

CHAPTER NEWS

The Executive Board of the Flint,
Michigan, chapter used initiative and
objected to a free service call ad in
classified telephone directory, and got
immediate action. At the same meet-
ing the members adopted a price
schedule of suggested minimum ser-
vice charges.

A talk on "cut-throat" prices and
appointment of a committee to inves-
tigate same were the highlights of a
Bridgeport, Conn., meeting.

Armstrong's system of frequency
modulation was explained by George
Devine of G-E to the Chicago chapter.

Jobber visitors at Duluth, Minn.,
said that the tube business was corn-
coming back to servicemen and that
leaks in parts business were very
meager.

The bill pending in the Tennessee
Legislature for the licensing of radio
servicemen was discussed at a Nash-
ville, Tenn., meeting.

In Pittsburgh, Pa., "Idle Time —
What It Costs" was the subject of a
talk by Bert Bregenzer.

Compulsory price maintenance for
members was causing friction in the
Quincy, 111., group and was therefore
eliminated.

Methods of competing with mer-
chants and chain stores offering tube
discounts of 40 per cent were sug-
gested in Steubenville, Ohio.

A Board of Radio Regents was
formed at Washington, D. C, to make
"Member RSA" mean something con-
crete and reliable to the public. A
credit reference bureau and an em-
ployment bureau were established and
the Regents Board was instructed to
study rules and penalties to insure
an accurate check on members' busi-
ness ethics.

R4DIO TOD4V

HewBocktets

Allied Recording Prod. Co., 126
W. 4 6th St., New York, N. Y. — two-
color catalog illustrating and de-
scribing recorders, turntables, and
other Allied products.

Thordarson Elec. Mfg. Co., 500 W.
Huron St.. Chicago, 111. — Spring-
Summer edition of Catalog 400-CX
listing new transformers for service-
man, p. a. engineer and amateur.

Stoll Radio Co., 116 Franklin St.,
Peoria, 111., modern complete chart
on ballast tubes. Prepaid, 25c.

Belden Mfg. Co., 4613 W. Van Bu-
ren St., Chicago, 111. — catalog giving
information on all characteristics of
radio and antenna wires.

Supreme Instruments Corp.,
Greenwood, Miss. — catalog describing
new test equipment.

Dial Light Co. of America, Inc.,
New York, N. Y. — catalog of pilot
light assemblies and signal indicator
jewels.

R. C. A. Mfg. Co., Inc., Harrison,
N. J., Commercial Engineering Sec-
tion.— Receiving tube characteristics
chart 1275-B (2-39) booklet gives
tube characteristics, shows socket
connections with RMA designations.

Clarostat Mfg. Co., 285 N. Sixth
St., Brooklyn, N. Y. — Service Manual
with accurate volume control data cov-
ering all standard sets.

American Television & Radio Co.,
St. Paul, Minnesota. — Catalog 139
describing complete list of vibrators,
vibrator-operated and rectifier power
supplies. Copy of ATR Vibrator
Guide and Equivalent chart also
available.

Service Instruments, Inc., 404
Fourth Ave., New York, N. Y. — 80
page booklet that gives complete info
about true dynamic testing and Rider
Chanalys*. Has hard covers, heav-
ily illustrated. 2 5c.

F. W. Stewart Mfg. Corp., 3 40 W.
Huron St., Chicago, 111. — 1939 auto
radio remote control catalog illus-
trates instrument panel mountings,
controls, accessories; also specifica-
tions on auto radio controls.

Sonora Radio & Television Corp.,
2 62 6 W. Washington Blvd., Chicago,
111. — Complete price story on "Pack-
age Plan" models and descriptive
literature and prices on entire Sonora
line.

Solar Mfg. Corp., 599 Broadway,
New York, N. Y. — Bulletin T-l on
television capacitor standards, types
and sizes.

Dual Remote Control Co., Inc., 505
Guaranty Bldg., Detroit, Mich. —
booklet presenting Ducon dual con-
trols, back-seat controls, front con-
trols and accessories.

A. Bitter Construction Co., 27-01
Bridge Plaza North, L. I. City, N. Y.
— catalog showing planned merchan-
dising equipment and installations
for records.

Electro Products Labs., 549 W. Ran-
dolph St., Chicago — catalog of "A" and
"B" eliminators and power supply
units operating on storage battery,
wind charger or any six volt source of
DC power.

Meissner Mfg. Co., Mt. Carmel, 111. —
Vibrator replacement guide telling
which vibrator to use in what set.

Universal Microphone Co., Ingle-
wood, Cal. — a new edition of Practical
Wax Recording in a handy pocket size,
and reduced to 25c.

B-L Electric Mfg. Co., 19th & Wash-
ington Ave., St. Louis, Mo. — Bulletin
No. R-38 describing metallic rectifiers
for low-voltage power units, including
auto-radio packs and battery chargers.

Atlas Sound Corp., 1447 39th St..
Brooklyn, N. Y. — Spring-Summer
sound catalog containing new "Chan-
delier" speakers, P. M. units, etc.

£uH ijw can em a

RIDER CHANALYST!

NATIONAL UNION WILL GIVE YOU ONE
IF YOU BUY 80 N. U. TUBES AND/OR
ELECTRO CONDENSERS PER MONTH

AF MULTIPLIER
SWI TCH

AF LEVEL. CONTROL
AF INDICATOR EYE -

RF-IF INDICATOR
EYE

RF-IF TUNING
CONTROL

ELECTRONIC VOLTMETER -

RF-IF MULTIPLIER SW.

RF-IF PROBE JACK

RF PIN JACK

RF-IF LEVEL CONTROL -

RF-IF BAND SWITCH

AF PROBE JACK

WATTAGE INDICATOR
CONTROL.

-WATTAGE INDICATOR
EYE

-H F INDICATOR
EYE

HIGH FREQUENCY
TUNING
CONTROL

METER ZERO ADJUSTMENT -

-H F LEVEL CONTROL
-LINE SWITCH
-HF PROBE JACK

■ HF PIN JACK
-HF BAND SWITCH
-VM PROBE JACK

-METER RANGE SWITCH

ASK YOUR NATIONAL UNION JOBBER
HOW TO GET A CHANALYST FREE

The CHANALYST is a great piece of modern high efficiency test equip-
ment ... an invaluable asset to your service business. It is guaranteed
by John F. Rider and approved by
National Union Engineers. Now YOU
can own one.

. NATIONAL UNION RADIO CORP.

Come on!

BUILD CUSTOMER CONFIDENCE
WITH NATIONAL UNION
TUBES and CONDENSERS!

Newark, New Jersey RT-339
Who is nearest Nat. Union Jobber?
Name _._ _ _

Street..
City.

State..

MARCH, 1939

jfrtWf AT LOWEST PRICES*

NEW
SETS

IN ALLIED'S
SPRING CATALOG!

^000 PARTS

NEW P. A.

Just Out!— ALLIED'S new
catalog, with your every
radio need at lowest prices!
60 new "Knight" Radios,
with ideal price leaders fea-
turing Push-Button Tuning
and "Air Magnet" built-in
aerials, at remarkable prices.
Models for Portable, AC,
AC-DC, 1^,6 and 32 volt,
battery and auto operation, as low as $5.95! New rec-
ord players, phonographs, and phono-radios. Over 14,000
parts, books, tools; new P. A. systems, 8-65 watts; ama-
teur gear, Kits, and complete re-
cording equipment. Get ALLIED'S
Spring Catalog — Radio's Complete
Supply Guide! Let it save you time
and money. It's FREE — just send
coupon.

1 ALLIED Radio Corporation,
833 W. Jackson Blvd.,
Dept. 15-C-9, Chicago.
Send me, Free, your Radio and Parts Catalog for
Spring.
Name

Address

In case you
don't \now

. . . you are READING

— the largest issue of RADIO
TODAY in almost two years —
having:

— the largest advertising volume in
ANY radio trade paper in 21
months.

— the largest number of advertisers.

— the largest buying power circu-
lation.

— the lowest advertising rate per
thousand readers.

Here, in radio's outstanding trade paper
— combined with the 4th Annual Radio
Trade Directory — you see radio's great-
est procession of products passing in
front of all radio markets.

Use this Directory Issue as your buying
guide. But take care of it. The edition
is LIMITED. Additional copies are NOT
available. Keep it handy for daily
reference.

RADIO
TODAY

480 Lexington Avenue, New York

fkwte Hmllm^s

Portable with cover

* 4 tube super-het 12% lb. port-
able with removable hinged cover.
Well balanced for easy carrying.
Single-pack, long-life batteries. P. M.
speaker. Airplane cloth cover.
$34.50 list. Espey Mfg. Co., 67 Irv-
ing PI., New York, N. Y. — Radio
Today.

2-in-T midget tubes

•k Miniature tubes designed for
small AC-DC receivers. Type
32L7GT may be used in conven-
tional half-wave rectifier and beam
power amplifier circuits. Type
12B8GT has pentode section used as
conventional RF or IP amplifier
and triode section as biased or grid-
leak detector. Arcturus Radio
Tube Co., Newark, N. J/ — Radio
Today.

Portomatic battery portable

•k 7-tube super-het with self-con-
tained batteries and loop aerial.
Batteries automatically disconnected
on AC-DC operation. Pilot light, col-
ored indicator. Model U17-A, Aero-
Tweed cover, $43.50 list, less bat-
teries. Port-O-Matic Corp., 1013
Madison Ave., New York, N. Y. —
Radio Today.

Portable multi-range meter

■k Leatherette encased portable
multi-range meter. Push button op-
eration. DC voltage ranges of 0/2.5/-
10/50/250/500/2500; AC, 0/15/150/-
1500; DC ma., 0/1/10/100/1000;
Ohms 0/2500/25000/250,000; DC
amps 0/10/25. Also output and
decibel ranges. Frosted aluminum
two-tone panel. $20.95 net. Ap-
proved Technical App Co., 57% Dey
St., New York, N. Y. — Radio Today.

Electronic Laboratories, Inc., 122
W. New York St., Indianapolis Ind.
— bulletin on "Converters, Polarity
Changers and Vibrators," also a new
sheet showing heavy duty vibrators.

EVERYTHING IN RADID!

<f#&

A COMPLETE SOURCE FOR YOUR RADIO NEEDS!

Our immense stock of radio sets, parts and sup-
plies enables you to purchase your entire needs on
one order. The Big BA catalog is an encyclopedia
of the Radio Industry. You will find all your Nat-
ionally Known Favorites shown in this Book and
it's FREE for the asking. BA service is better than
ever— practically every order is shipped the same f /gjg
day it is received.

Write for Big New Wholesale Catalog

BURSTEIN-RPPLEBEE CD. S^S:

KANSAS

W«Oi(SAlE

cirr.uo.

Bums

2™/V&

M$S

RADIO TODAY

Radio's Master
Encyclopedia

Buyers, retailers, spec writers, manu-
facturers of radio and allied products,
will find much of value in United's
new catalog. Described as a combina-
tion reference book, buying guide and
sales catalog, it contains listings, illus-
trations, specs, and prices of parts and
equipment. Its condensed form adds
to the ease of finding desired informa-
tion. More than 600 pages make the
book over an inch thick. $2.50 in
U. S. A. postpaid; $3.00 elsewhere.
United Catalog Publishers, Inc., 258
Broadway, New York, N. Y. — Radio
Today.

Bargain tickets to
N. Y. World's Fair

Mr. William S. Paley, Chairman and
President, Columbia Broadcasting Sys-
tem, has been appointed sponsor of
New York World's Fair advance ticket
sale to the radio industry. Four types
of bargain tickets are being offered in-
cluding: Souvenir Books containing
five general admission tickets and six
concession admission tickets. Face
value: $5.40. Sales price: $3.75, avail-
able during the advance sale only;
non-transferable season ticket with
identifying photograph for $15.00, en-
titling owner to unlimited admission;
non-transferable twenty admission
ticket with identifying photograph
for $7.50, advance sale only; chil-
dren's non-transferable season ticket
with identifying photograph salable
to children between three and four-
teen years of age, including high
school students, at $5.00, entitles the
owner to unlimited admissions.

Selling Up

(Continued from page 22)

convinced that their radio is as much
an investment as their furniture.

"Department stores and furniture
houses are educating the public to
furnish homes in 18th Century, Swed-
ish Modern, or some other distinctive
style. That's their job. Show your
high priced market that ugly sets
aren't artistic, aren't practical. That's
your job !" concludes Mr. Weisburgh.

To attract the rather neglected
"connoisseur" Sparks-Withington Co.
is promoting "Limited Editions"
models which bid fair to take midget
radios out of the low-profit field. Rare
woods such as Brazilian Rosewood,
Satinwood, mahogany and walnut to
feature beauty, and limited production
to make them exclusive, are the mer-
chandising angles used to stimulate
sales and more attractive profit.

"It is our opinion," states H. R.
Wall of Sparton, "that women make
most of the purchases of small radios
which would, if distinctively styled,
be placed in conspicuous locations in
the home. Assuming that their pur-
chase of a radio is similar to that of
a hat or coat (where they desire to
have something different), our 'Lim-
ited Editions' plan will give the pur-
chaser a pride of ownership, not or-
dinarily realized.

"In selling a five tube superhet, in

a rare wood cabinet, the dealer is
afforded an excellent sales argument.
He has only a, limited number of these
radios for his area. Since it is only
human nature to want that which is
rare, it means real selling power. By
using a special display and a booklet
giving the salient features of each
set, a dealer may give the consumer
added value and achieve a larger
margin of profit."

Many dealers are saying that it's
easier to sell down than to sell up.
There's logic in this and no one knows
it better than the clothier. When he
puts a beautiful suit of clothes on
you "just for fit" he knows you'll be
disgusted with the cheaper suit you

came in for.

The same thing applies to expensive
radio sets and refrigerators, says Mr.
McLaughlin of J. E. Fitzgerald Co.,
Union City, N. J. He starts selling
price items "on the street" by window
displays of his manufacturers' best
items, then follows it through by de-
voting almost his entire space inside
to the biggest and best. When Mr.
McLaughlin was asked what he
thought of business indications in '39,
"I'm still happy about '38," he re-
plied.

All in all, the concerted opinion of
radio dealers seems to be, "It's hard
work to sell up, but brother, it's worth
it!"

TAKE IT WITH YOU

Position of

Antenna for

Coast-to-Coast

and foreign

reception.

■ >

Licensed by R.C.A.

Territories

Available

for

Distributors

and

Dealers

A PRACTICAL Portable

RADIO. Operates on
110 VOLTS A.C.

SELF CONTAINED BATTERIES

USE IT ANYWHERE

the home, office, hotel or wherever
s available.

Also

a real companion for all your out-
ings — fishing, hunting, boating,
camping, etc.

PORTABLE "55"

TWO RADIOS IN ONE

Here are a few of the features that
make it the most outstanding Port-
able Radio on the market.

Low cost operation — uses 4
flashlight cells and two small
45 volt B's, (battery life, ex-
ceptionally long). Also operates
on 110 Volts A.C. Automatic
cut-off switch completely dis-
connects batteries when used on A.C.

Directional Loop Antenna, adjustable for maximum sig-
nal and minimum noise.

Write immediately for full particulars on
this new and unusual type of portable radio.

SETCHELL CARLSON, Inc.

2233 UNIVERSITY AVE. ST. PAUL, MINN.

"PI^VCOR" Rotary Converters

Provide the most dependable means for converting direct current to
alternating current. Particularly well adapted for operating radio
receivers, public address systems, power amplifiers, signs, A.C. motors,
etc. Available in two standard classifications "DA" and "TR" — both
with or without filter — engineered for converting 6, 12, 32, 110 or 220
volts D.C. to 110 or 220 volts A.C, 40 to 2,000 watts. There is a

"Pincor" converter for every requirement. Write for

complete descriptions and data.

Pioneer Gen-E-Motor Corporation

Dept. R-2C, 466 W. SUPERIOR ST., CHICAGO, ILL.

Without obligation please send me "PINCOR" Rotary
Converter Catalog and Data.

NAME

ADDRESS

CITY STATE

MARCH, 7939

HmTMn§s

especially in Television —

"A LITTLE KNOWLEDGE
IS A DANGEROUS THING!'

For a new art, a new concept of stand-
ards and performance. New parts-
engineered with full knowledge of
Television's requirements. For higher
voltages — wider safety margins.

OLA

TELEVISION CAPACITORS

The highest standards ever built into
commercial condensers give absolute
dependability. Engineers will be inter-
ested in a copy of Bulletin T-l on Tele-
vision Capacitor Standards, Types and
Sizes. Free on request.

SOLAR MFG. CORP., 599 Broadway, New York

•«('!SpPP?P""**H9B *•

jH«—» ' -

360° speaker

-k "Chandelier" speaker projects
sound evenly over 360 degree range
with maximum amplification, mini-
mum acoustic feed-back in any loca-
tion. Various sizes available. Model
L-360 for 12 in. cones, $27.50 list.
Atlas Sound Corp., 1447-51 39th St.,
Brooklyn, N. Y. — Radio Today.

The following list of new prod-
ucts will be described in the April
issue of Radio Today. Advance in-
formation may be obtained by writ-
ing the manufacturer.

Radio and talk-back equipment —
Bell Sound Systems Inc., 1183 Es-
sex Ave., Columbus, Ohio.

Pee-Wees and portables — Detrola
Radio Corp., 3630 W. Fort St., De-
troit, Mich.

"Radio Library" — Halson Radio
& Television, Inc., Cambridge & Tre-
mont Sts., Meriden, Conn.

Test equipment kits — Carron Mfg.
Co., 415 S. Aberdeen St., Chicago.

Musical instrument amplifying
adapter — Transformer Corp. of
America, 69 Wooster St., New York,
N. Y.

Mobile P. A. svstem — Operadio
Mfg. Co., St. Charles, 111.

Replacement volume controls —
Consolidated Wire & Assoc. Corps.,
516 S. Peoria St., Chicago, 111.

Push-button analyst — Radio City
Products, 88 Park Place, New York,
N. Y.

AC-DC super-het — Warwick Mfg.
Corp., 1700 W. Washington Blvd.,
Chicago, 111.

Radial cone speaker projector —
University Labs., 195 Chrystie St.,
New York, N. Y.

Radio-phono combination — Emer-
son Radio & Phonograph Corp., Ill
Eighth Ave., New York, N. Y.

Electric shaver filter — J. W. Mil-
ler Co., -5917 S. Main St., Los An-
geles, Cal.

Gas-engine generator — Eicor, Inc.,
515 S. Laflin St., Chicago, 111.

AC-battery portable — Setchell-
Carlson, Inc., 2233 University Ave.,
St. Paul, Minn.

Dynamic mikes — Shure Bros., 225
W. Huron St., Chicago, 111.

Turret bandswitch — Coto-Coil Co.,
Inc., 71 Willard Ave., Providence,
R. I.

Standard frequency record — Uni-
versal Microphone Co., Ltd., Ingle-
wood, Cal.

Portable sound system — Ray-Lab,
Inc., 211 Railroad Ave., Elmira.
N. Y.

Wire-wound controls & rheostats
— International Resistance Co., 401
N. Broad St., Philadelphia, Pa.

RADIO TODAY

INDEX
TO ADVERTISEMENTS

A Page

ADIRONDACK RADIO SUPPLY 92

AEROVOX CORP 53

ALDEN PRODUCTS CO 56

ALLIED RADIO CORP 88

AMERICAN CONDENSER CORP 50

AMERICAN EMBLEM CO., INC 54

AMERICAN RADIO HARDWARE CO., INC... 57

AMERICAN TELEVISION & RADIO CO 82

AMPERITE CO 62

AMY, ACEVES & KING, INC 46

APPROVED TECHNICAL APPARATUS 83

ARCTURUS RADIO TUBE CO 77

ATLAS SOUND CORP 70

0. AUSTIN CO 56

AVNET CO., CHARLES 46

BAG LEY RADIO CO 92

BANK'S MFG. CO 71

BELDEN MFG. CO 79

BELL SOUND SYSTEMS, INC 71

BELMONT RADIO CORP Cover Ml

BENWOOD-LINZE CO., THE 66

BITTER CONSTRUCTION CO., A 82

BOGEN CO., INC., DAVID 72

BROWNING LABORATORIES, INC 50

BRUNSWICK RADIO DIV., MERSMAN BROS.

CORP Cover II

BRUSH DEVELOPMENT CO 62

BURSTEIN-APPLEBEE CO 88.92

CANNON CO., C. F 56

CASTLEWOOD MFG. CO 49

CENTRALAB 74

CENTRAL SIGHTSEEING BUREAU, INC 86

CHICAGO SOUND SYSTEMS, INC 62

CINAUDAGRAPH CORP 73

CLAROSTAT MFG. CO., INC 66

CONSOLIDATED WIRE & ASSOC. CORPS... 78

CORNELL-DUBILIER ELEC. CORP 55

COSMIC RADIO CORP 54

CROSLEY CORP 8

CROWE NAME PLATE & MFG. CO 48

DUAL REMOTE CONTROL CO 48

ELECTRIC & RADIO CO 92

EMERSON RADIO & PHONOGRAPH CORP. 3
ESPEY MFG. CO., INC 44

FEDERAL SALES CO 57

FINCH TELECOMMUNICATION LABS., INC. 7

GALVIN MFG. CORP Cover IV

GARDINER METAL CO 76

GENERAL ELECTRIC CO 4

GENERAL INDUSTRIES CO 64

GOAT RADIO TUBE PARTS, INC 56

HICKOK ELEC. INSTRUMENT CO 59

HUDSON VALLEY ASBESTOS CORP 92

HYGRADE SYLVANIA CORP 6,42

INTERNATIONAL RESISTANCE CO 65

JANETTE MFG. CO 92

JEFFERSON-TRAVIS RADIO MFG. CORP... 76

KEN-RAD TUBE & LAMP CORP 85

KOPPLE, JOHN J 92

L Page

LAFAYETTE RADIO CORP 75

LITTELFUSE INCORPORATED 63

MAJESTIC RADIO & TELEV. CORP 44

MALLORY & CO., INC., P. R 1

MEISSNER MFG. CO 29

MICA INSULATOR CO 59

MIESSNER INVENTIONS, INC 61

MILLION RADIO & TELEV. LAB 68

MUELLER ELEC. CO 58

MUTER CO 47

NAT'L RADIO PARTS TRADE SHOW 32

NATIONAL UNION RADIO CORP 87

NEW YORK RADIO SUPPLY 78

OMAN & SONS. D. W 49

OPERADIO MFG. CO 70

OXFORD-TARTAK RADIO CORP 73

PAR-METAL PRODUCTS CORP 58

PHILCO RADIO & TELEV. CORP 10

PIONEER GFN-E-MDTOR CORP 89

PORT-0-MATIC CORP 91

PRESTO RECORDING CORP 63

QUAM-NICHOLS CO 72

RAnmRT CORP 46

R'Vnin CORP OF AMERITA 34.35

RAMO LfiMD HO. OF AMERICA 44

RADIO SPEAKERS. INC 71

R»DIO & TECHNICAL PUBLISHING CO 80

RAY-LAB. INC 70

RflVTHFflN PRODUCTION CORP 5

RPS MFG. CO.. IMC 36. 37. 38. 3"

RFRAL AMPIIFIER MFG. CORP 70

RIDER. JOHN F 81

SCHLOSS BROS 64

<;fq\/Ii-f INSTRUMENTS INC 60

SFTr-HFi | PARLSON. INC 89

SIMPSON FLFP CO 67

SOI AR MFfi. CORP 90

SPARI'S-WITHINRTON CO 9

SPRAYBFRRV ACADEMY OF RADIO 91

STOI L RADIO CO 66

SUNDT ENGINEERING CO 63

SUPERIOR TUBE CO 78

SUPREME INSTRUMENTS CORP 69

TWORnARSON ELEC. MFG. CO 75

TRANSFORMFR CORP. OF AMERICA 84

TRIPLETT ELEC. INSTRUMENT CO 68

TUNG-SOL LAMP WORKS, INC 52

UNITED CATALOG PUBLISHERS. INC 81

UNIVERSAL CAMERA CORP 31

UTAH RADIO PRODUCTS CO 2

WARD FRODUCTS CORP 46

WARREN MFG. CO.. J. D 74

WEBSTER-CHICAGO 82

WEBSTER ELEC. CO 27

WESTERN UNION TELEGRAPH CO 40

WESTON ELEC. INSTRUMENT CORP 51

WHOLESALE RADIO SERVICE CO., INC 86

ZOPHAR MILLS, INC 62

While every precaution is taken to insure accuracy, we cannot guarantee against the
possibility of an occasional change or omission in the preparation of this index.

PORT(DMATIC

SCORES AGAIN WITH
ANOTHER NEW RADIO SENSATION

The DUO -POWER
PORTABLE RADIO

.V:

-«

PLAYS ON ITS OWN POWER OR
AC-DC CURRENT ... no aeriql,
no ground, plug-in optional. . . .

Write for literature describing the complete
line of portables tor every purse and purpose.

THE PORTO MATIC CORPORATION

"The House of Portables"
1013 MADISON AVE. N. Y. C.

Don't Let TELEVISION

Catch You Mapping!

Train for Your Share
of Profits . . . NOW!

• Are you awake to the great
money-making possibilities that stretch
out before you in Television and Fac-
simile work? Here are two phases of
Radio that will literally recruit an army
of Servicemen in a new multi-million dollar
industry. Will you be prepared to get on this
enormous payroll? Competition demands that
you know your "stuff." As in all phases of
Radio Service and Installation work, yoii
must have a bettei'-than-average technical
knowledge to do more jobs Quicker and with
greater efficiency . . . with greater profits.
That's why SPRAYBERRY ADVANCED
•MASTER SERVICE TRAINING" was de-
veloped. Includes over 50 new lessons, clear
and simply written, on almost every essential
Radio repair subject, including latest TELE-
VISION and FACSIMILE instruction. It's a
compact, "all-meat" type of Training in Set
Testing. Repairing. Parts Testing, Trouble
Shooting, etc.

DO BETTER JOBS . . . QUICKER
It shows you the easiest ways of doing the
hardest jobs. Shows you time-saving short-cuts be-
sides training you in actual business-getting meth-
ods. Many Servicemen have easily paid for this prac-
tical Course out of increased earnings. Sold on terms
as low as $3.00 down — $3.00 per month with iron-clad
MONEY-RACK Agreement.

Don't fall into the rut of being satisfied with your
present earnings. Self-improvement is the surest way
to greater usefulness and bigger Pay. Let me send
you complete information at once. For your own sake,
don't put it off.

RUSH Coupon for FREE Facts

r ______ __ _ __ __ MM. — = __ — — — —

I SPRAYBERRY ACADEMY OF RADIO
J 1400-C University Place, N. W.
I Washington, D. C.

I Plea.se send, without obligation, complete details
of your MASTEH SERVICE COURSE.

1 Address

I City State

I (Paste on penny postcard or mail in envelope)

M4RCH, 7939

JOBBERS

-BAGLEY RADIO COMPANY-

1216 D STREET, SAN BERNARDINO, CALIF.

PROFITABLE LINES
Trav-ler Radio & Television Corp. House radios
— Autc sets — portables.

Condenser Products Co. Standard Paper & Elec-
trolytic Capacitors — Special types made to order.
Attractive Prices.
Write for Quotations of Your Requirements.

—ELECTRIC & RADIO CO.—

INCORPORATED 1910

WHOLESALE ONLY

ONLY NATIONALLY ADVERTISED LINES

Butte, Montana

Address for mail

Room 7, First National Bank Bldg.
Territory covered

Montana, Idaho and Wyoming

r-HUDSON VALLEY ASBESTOS CORP.^

170 CENTRAL AVE. ALBANY, N. Y.

Wholesale distributors of . . .

Motorola Car and Home Radios •
Stromberg Carlson Radios and Sound
Systems • Taco Aerials.

Serving Eastern New York, Western
Massachusetts and Western Vermont.

— BURSTEIN-APPLEBEE CO.—

1012-14 McGEE ST. KANSAS CITY, MO.

Our immense stock of radio sets, parts
and supplies enables you to purchase your
entire needs on one order. You will find
all your Nationally Known Favorites in
this big book which is FREE for the ask-
ing. Practically every order is shipped the
same day it is received. Write for Catalog.
EVERYTHING IN RADIO!

r— ADIRONDACK RADIO SUPPLY-

40 CLYDE ST. BOX 403, GL0VERSVILLE, N.Y.

100% Wholesale — covering north-
ern and eastern New York State —
Radio, Photographic, and Auto-
motive products.

REPRESENTATIVES
-JOHN J. KOPPLE-

60 EAST 42ND ST.

NEW YORK, N. Y.

Manufacturer's Representative

COVERING:

New England, New York,

New Jersey and Philadelphia, Pa.

Pioneer in Rad/o

T/uukf fades

Majestic reorganized

A complete change in directorate,
increased working capital, and an ag-
gressive operating campaign, are an-
nounced by Majestic Radio & Television
Corp., Chicago. Former directors, who
were with one exception, also directors
of Davega Stores Corp., and N. L.
Cohn, former president of Majestic,
have resigned. An option has been ac-
quired on all Majestic stock owned by
Davega.

Stewart-Warner Corp's Vice-Presi-
dent and General Sales Mgr., F. A.
Hiter predicts one of the biggest vol-
ume sales years since the inception of
the radio industry.

Belden Manufacturing Co.. Chicago,
announces, with profound sorrow the
death of Joseph Congdon Belden,
President of the company, on Feb. 17
at his home in Chicago.

Ansley Radio Corp., New York, N. Y.,
has acquired the old Cornell-Dubilier
plant in the Bronx, New York City,
for its future manufacturing opera-
tions. The plant was originally built
as a piano factory, and later used for
making radio parts, so it is perfectly
adapted for Ansley's radio and piano
manufacturing.

The Aerovox Corp., now of New Bed-
ford, Mass., announces the opening of
its New York Sale Office at 347 Fifth
Ave. The 'phone number is MUrray
Hill 5-3858. Sales representatives in
that area will work out of the New
York office.

Dan Fairbanks, genial sales manager
of the Merchandise Division of Inter-
national Resistance Co., left February
25th for an extensive swing through
the Southern and Western territory.
All told, Dan expects to cover approxi-
mately 10,000 miles during a six week
period.

Rush of business for Continental
Radio & Television Corp., on the new
Admiral small sets, has necessitated
the addition of a third production line
in the factory. Production has been
increased about 40 per cent, the daily
output being raised from 2,100 to 3,000
radios since Feb. 8th.

Jaivette/ TLotartf Converters

FOR CONVERTING D.C. TO fl.C.

ASK FOR BULLETIN 13-1

Janette lttanufactutuuj Company

556-558 lUest lUonwe Siceet CHic^o, III. "U.S. JI.

i\o*

l\^u

Meissner Mfg. Co. have assigned
Northern N. Y. State to Harry B. Segar
in addition to his own territory. John
O. Olsen is representing Erie, Pa.

Warren E. Brennan has been ap-
pointed Admiral sales rep to cover
Ohio and Michigan.

New Stromb erg-Carlson distributor
in most of Nebraska and part of Iowa,
is the H. C. Noll Co., Omaha, Nebraska,
one of Nebraska's oldest appliance
concerns.

David Kaufmann's Sons, Baltimore,
Md., and Appliances, Inc., Cincinnati,
O., have been appointed distributors
for Stewart-Warner radios, according
to an announcement by L. L. Kelsey,
radio division sales manager.

Klaus Radio & Electric Co., Peoria,
111., has issued a 1939 parts and equip-
ment catalog.

New Admiral distributors recently
appointed are: Benton-Bailey Co., Inc.,
Richmond, Va. ; H. I. Sackett Electric
Co., Buffalo; Baldwin-Hall Co., Inc.,
Syracuse; Kemp Equipment Co.,
Rochester; and W. B. Davis Electric
Supply Co., Memphis, Tenn.

Philco-New York shows
all-year merchandise

Merchandise that will be seasonable
throughout the year was the theme of
the showing sponsored by Philco-New
York, local jobber, at the Hotel Savoy-
Plaza recently. Air-conditioning units,
refrigerators, electric ironers, washing
machines, auto-radios, home radios,
and the new television receiver were
shown to convince New York dealers
of the value of carrying salable mer-
chandise all year 'round.

The television demonstration and the
refreshment room were great attrac-
tions. Far-seeing retailers, however,
found that the ice-man sells coal for a
good reason; and that air-conditioning
and electrical appliances are necessary
adjuncts to the successful radio deal-
er's stock-in-trade.

Channels of radio tube
distribution

The following figures recently com-
piled by National Radio Parts Dis-
tributors Association dramatically
show the distribution of radio tube
sales in 1938.

Initial equipment 35,500,000

Export 6,750,000

Radio parts distributors to dealers 18.500,000

Set distributors to dealers 5,000,000

Retail mail order houses to consumers... 5,000,000

Chain stores to consumer 2,500,000

Wholesale mail order houses to dealers,

servicemen and consumers 500,000

Manufacturers direct to dealers 500,000

TOTAL.. 74,250,000

To the dealer or serviceman wor-
ried about the competition from mail
order houses and cut-rate chain stores,
these figures should prove interesting.
Eliminating the 35,500,000 tubes in
new sets and the 6,750,000 exported,
32,000,000 tubes were left for retail
to consumers. Of these, dealers and
servicemen have had the lion's share,
selling over 24,000,000 tubes, or about
75 per cent of the total replacement
business.

RADIO TODAY

5-TUBE NEW TYPE SUPER-
JUST PLUG IN AND PLAY!

Move from room to room. New 150-mffHompere tubes.
No antenna. No ground. 6-staiion automatic tuning.

Here is Belmont's super powerful indoor Portable
Super Model 519. Plug into any 110 volt socket, AC
or DC. Styled to the minute. Optional ivory or
walnut bakelite cabinet. Streamlined dial. Power-
ful built-in antenna. AVC 540-1650 KC. Dynamic
speaker. Size 6*4" x 10" x 5J4". Shipping weight,
only 8 lbs.

<&&&&

BELMONT RADIO CORPORATION

Cob/e Address: BELRAD

1257 FULLERTON AVE., CHICAGO

Mot&Uria BOOSTOMATI

Showing (he large cam within the receiver which
controls the tuning of the variable "BooiUr" Unit.

WITH AUTOMATIC VARIABLE SENSITIVE
UNIT MATCHED TO "BOOSTER" AERIA

The "Boost-O-Matic" automatic variable sensitivity unit consist
of a matched and tuned coil in the aerial by which the tuning i
varied automatically through the movement of a high permea
bility iron core within the "Booster" coil. The variable condense
on the radio is connected to this "Booster" aerial unit by
mechanical link so that when stations are tuned the aerial is als<
automatically tuned giving 15 times increased aerial efficiency

FITS and MATCHES ALL CARS

SPECIFICALLY DESIGNED for LOW-SIGNAL

AND METROPOLITAN "DEAD SPOT" AREAS $/| V|95

With this new Motorola sensitivity development it is now possible to pick up stations in
low signal areas not ordinarily obtainable on the average car radio. "Boost-O-Matic" is
also in demand in metropolitan areas troubled with fading and "dead spots." Its extremely
sharp selectivity makes it ideal for all localities where station signals run together and garble.
Extremely great usable sensitivity with better than ever signal-to-noise ratio. The "Boost-O-
Matic" has sensitivity enough to drive around in cities with aerial entirely telescoped.
6 Tubes: 3-gang tuning condenser: Push-Button Tone Control: Self-contained 6" Electro-
Dynamic Speaker. With 60" or 90" Super-Cowl "Booster" Equipped Cowl Aerial.

COMPLETE

WITH 60 INCH

"BOOSTER" AERIAL

With 90 inch "Booster" Equipped
Super-Cowl Aerial *1.00 Addition'

Mctotcta

Write, Telephone or Wire

GALVIN MFG. CORPOR

'our Motorola Distribut

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