SPESIFICATION: Modulation Method:n/4-DQPSK Frequency Range: 530-580 MHz 1x100CHs (Frequency of some orders is subject to actual products) sampling Ratio:48KHz Transmission rate:204.8kbps dynamac Range: 90db Total Harmonic Distortion :0.1% Delay Time of audio Transmission : 3ms S/N Ratio : 96db Frequency response : 30-20khz RX Sensitivity : -94dbm Unique ID Address : YES