System parameter:
1．Digital PLL circuit design, make signal stable.
2．Lock function to avoid misoperation.
3.  SMT technology for PCB installation to make quality more stable
4.  High dynamic dual-compression stream technology, loading high and low frequency signals automatic to show the dynamic characteristic.
5. Mute function and voice code lock function to suppress whistles.
6.sensor type: cardioid
7.Frequency response: 50Hz-15KHz(±2dB)
8.Sensitivity（1KHz）：-54.5dBV/Pa /1.88mV/Pa
Receiver
1. Receive mode: dual-conversion
2. Frequency range: UHF 600-806MHz
3. Frequency response: 60Hz-15KHz(±2dB)
4. Frequency stability: ±0.005% (crystal locked)
5. Distortion: ＜0.5%
6. S/N: ＞105dB
7. Spurious rejection : ＞80dB
7. Voltage: 13-15V  DC
Transmitter / microphone
1. transmit mode: wireless
2. Frequency range:  UHF 600-806MHz
3. Frequency stability : ±0.005% (crystal locked)
4. modulation mode : FM3
5. consumption : ＜110mA
6. antenna :built-in
7. directivity: cardioid
8. frequency swing : ±48KHz
9. Spurious rejection : ＞60dB