Microphone parameters: 1. Frequency range: fixed frequency 230290MHz (display 730~790MHz) 2. Oscillation mode: DSP chip frequency lock 3. Frequency stability: +\- 10ppm 4. RF power: 10dBm 5. Audio frequency response: 100~10000Hz 6. Distortion: <=0.5% 7. Battery specification: 1.5V/AA size dian   Receiver parameters: 1. Frequency range: fixed frequency 230290MHz (display 730~790MHz) 2. Oscillation mode: DSP […]