The board uses FM stereo transmitter integrated BA1404 and 9018 RF amplifier circuit. The frequency is stable. The external size is 5X5X1cm, the working voltage is 3V, and the advanced pilot frequency modulation stereo transmission technology is adopted, which can convert the stereo audio signal of audio equipment such as DVD players, TV sets, CD players, and radio-audio equipment into FM stereo waves, which can realize stereo sound. Wireless high-fidelity transmission of audio signals. In addition to transmitting stereo signals, the machine can also be used as a wireless microphone. When a stereo plug is inserted, it can be used as a stereo transmitter. When a lavalier microphone is inserted, the transmitter becomes a wireless microphone. The microphone volume can be adjusted. Audio transmission line or lavalier microphone line doubles as a transmitting antenna. The working frequency is continuously adjustable within 85-110MHz, and its reference transmission distance is about 10 to 100 meters in an open environment.

 

The board does not contain the audio transmission line and microphone.

 

 

1PCS * BA1404 FM Stereo Radio Transmitter Board Pluggable Microphone 9018