General SpecificationsFrequency Range��vhf136-174/UHF 400-470MHzChannel Capacity��16Channel Spacing��25KHzOperated Voltage��3.7 VBattery��H-1500MAh Li-ionBattery Life(5-5-90 duty cycle) About 8 hoursFrequency Stability����2.5ppmOperated Temperature��-30��c-+60��cAntenna Impedance��50��Communication Range��about 6km TransmitterRF Power Output��3WModulation��F3ESpurious Emission����65dBFM Noise����-45dB(W) ��-40dB (N)Audio Distortion����5%Transmitting Current����1.3A Receiver Sensitivity (12dB SINAD)����0.20 uVSelectivity��55dB/50dBInter-modulation����65dBSpurious Response����60dBFM Noise��45dB/40dBAudio Power Output��1000mWAudio Distortion����5%Standby Current ��15mA (with battery save on)