Telestreet pratice in Italy is totally illegal.
To use air frequencies you have to buy an expensive license from the governement. Otherway you are outlaw... one of the Prime Minister national network (retequattro) is outlaw too becasue one cannot have more than two national networks. So we live in a state of illegal order.
For further information ceck
www.telestreet.it where you can find english and spanish texts too