Hand Held Wireless Audio Transceiver Module

Infrared Wireless Audio Transceiver Module suitable for indoor use. It consists of carrier, and audio compressing and expanding circuit. Instead of general LC oscillation, PLL is used in Red Apple carrier circuit, with frequency range 2.8~4.5MHz. The receiver consists of IR demodulation receiving and audio demodulation, audio compressing and squelch circuits, pilot muting, MCU control and other functions. By simply adding external power, an audio socket, it can be embedded in a variety of devices, such as audio amplifier. The transmitter consists of IR transmitting, audio compressing, pilot frequency, MCU control and other circuits. By simply adding an external MIC and a shell, it can be made into an IR wireless voice transmitter, such as hand held or belt-pack device.