Micro wireless walkie-talkie circuit diagram

This machine is composed of 3 low-voltage integrated circuits. It has the characteristics of simple circuit, easy production, compact size, easy portability, and low operating voltage. Its operating frequency is in the 88-108MHz frequency band. The operating current of this machine is extremely small. The quiescent current in the transmitting state is about 7mA, the operating frequency is about 105MHz, the quiescent current in the receiving state is about 13mA, the sensitivity is better than 12uV, the signal-to-noise ratio is 30dB, and the audio output power is 100mW.