Introduction: 1. Use UHF550-980MHz PLL combined technology Power plus usable adjustable transmitter power to avoid interruption. 2. CPU control with LCD display makes operation easy and performance outstanding 3. Use multi-channel high band and intermediate hand to select and filter frequency for better anti-interrupting. 4. With audio compressing-expanding technology, the machine can decrease noises and increase the dynamic range. 5. Having back sound restrain function can avoid back sound scream 6. The receiver adopt multi-level high frequency enlargement. So it has high sensitivity. 7. Multi-level noise supervisory circuit. Special tone key locked identity functions make the machine have strong anti-jamming characteristics. 8. Perfect performance using the best chips and limbs. 9.100 meters in best condition, 60 meters in normal condition. Technical parameters: 1. Functions: (1) Frequency Range: UHF550-980MHz Adopt CPU control (2) With PLL combined technology: 6 groups’ system frequency. Include 32*4=128 Adjustable frequency point.6 group*128=768 frequency point sharing. (3) Frequency Stability:<+10ppm (4) Operating range:>105dB (5) T.H.D.Distortion:<0.5% (6) Frequency response:40Hz-18KHz (7) Tone output: Balanceable output: 0---600mV Unbalance output: 0---300mV (8) Tone frequency: 32 K-51.2 KHz. 2. Receiver: (1) Frequency Range: UHF550-980MHz(Adjustable) (2) Power adapter supply voltage:AC110V/230V 50Hz/60Hz (Please handle the products according to the marks on the receiver and adapter) (3) Operating voltage: DC-12V/800mA (4) Use Up power: 8 W (5) S/N Ratio:>105dB (6) T.H.D Distortion :<0.5% (7) Frequency response: 40Hz-18KHz 3. Transmitter (wireless conference system microphone) (1) Frequency Range: UHF550-980MHz(Adjustable) (2) Transmitter Power: High power:10dBm;Lower power:5dBm (3) Modulate Mode: FM (4) Maximum Modulation: +45KHz (5) High Wave: (6) Power Supply: 3V(2XAA 1.5V Alkaline batteries or high-capacity AA 1.2V 1800mA rechargeable batteries) (7) Standing Time:8 Hours