Tube AM Broadcaster, Transmit music to your Radio. Now your antique radio can play all of the same programs it did when it was new! With your CD, Ipod or cassette tape player, phonograph or high output microphone, You can even play a musical instrument. through it. this two tube transmitter becomes a miniature AM broadcasting station, patterned after the 1939 Zenith model S-7000 Wireless Record Player. As per the F.C.C rules Part 15 this is a perfectly legal transmitter And you need no license to use it. The rules state that the transmitter may only transmit 100mw input into a 5 meter antenna and transmit no farther than 200 feet and this transmitter meets all these rules.