Circuit based on BA1404 FM Transmitter works with two AA batteries can be connected if desired 6 volt dc adapter antenna output RCA Input SKET are 300 and 75 Frequency range: 95-105mhz (extended with material changes;) Transmission range: 40m... Electronics Projects, BA1404 Stereo 3V FM Transmitter Circuit "analog circuits projects, " Date 2019/08/02