■ 防止串音，每个信道有唯一ID码，可防止任意干扰源进入接收机干扰■ 具有世界先进的ACT(自动频道锁定)功能，能快速精确的自动锁定接收机的工作频率； The ^ housing is made of aluminium alloy and has the professional quality of break-free. There are 8 color tail covers channel recognition; High fax, wide range, high dynamic range, high quality, clear and bright super-centric directional midwick; CPU control; PLL frequency synthesis technology; True Diversified Dual Receive Technology; Large screen dynamic LCD display can display AF, RF level and channel conversion dynamically. Channel ^200 is adjustable, so that multiple sets can be used simultaneously without interference. The panel can set working distance, display mode and panel lock function. Indicators for the whole set (1) Comprehensive characteristics RF range: 640.000-689.750 MHz Channel number: 200 Channels Channel width: 250 KHz Modulation mode: FM SNR S/N: > 100 dBA Distortion: < 1% Frequency response: 60-17,000 Hz (2) Handheld transmitter RF Range: 640.000-689.750 MHz.RF power output: 26mW. Oscillation mode: VCO. Frequency stability: < < + + + +15 ppm. Frequency response: 60-17,000 Hz. Maximum input sound pressure: 60-17,000 Hz maximum input pressure: 45 dB.Microphone pickup: voicecoil heart-pointing microphone: Battery: 2 "1.5V AA" alkaline or 1.2V rechargeable batteries. Power consumption: 260 mW (3) Receiver. RF range: 640.000-689.750 MHz. Receiving mode: VCO. Frequency mode: FM oscillation mode: VCO CO CO. 15 ppm: VCO 7 dB: 7 dThe result is that μ V. Frequency response: 85-17,000 Hz. Power supply voltage: 12 VDC