General Standard* Frequency (MHz) 136-174 / 330-400 / 403-470 / 450-527Signal quantity 16Power 7.5 VFigure size high x wide x deepUse thin lithium battery 101.5mm x55.5mm x 30.5mmUse high volume lithium battery 101.5mm x 55.5mm x 35.5mmWeightUse thin lithium battery420gUse high volume lithium battery 500gAverage lifetime of battery(5-5-90 working circle) Low power High powerUse thin lithium battery 10 hours 7 hoursUse high volume lithium battery 14 hours 10 hoursSeal up under the Military Standard 810C,D and E; pass the IP 54 rain checkShock and vibration machine crust of press prevention is under the Military Standard 810C,D and E and TIA / EIA 603Dust prevention and humidity machine crust of press prevention is under the Military Standard 810C,D and E and TIA / EIA 603TransmitterStandard VHF / UHF* Frequency (MHz) 136-174 / 330-400 / 403-470 / 450-527 Frequency interval subsections in whole frequencySignal channel interval 12.5 / 20 / 25 kHzFrequency stability ( 30°C-60°C, with standard of + 25*) 2.5ppmPower 5W (VHF) 4W (UHF)Modulation limit ±2.5 12.5kHz, ± 4.0@20kHz, ±5.0@25kHzFM alternating sound and noise -40dBConduct radiation -36dBm < 1 GHz / - 30dBm > 1 GHzModulation FCC 12.5 kHz 11K0F3E, 25kHz 16K0F3EAudio frequency response(300-3000Hz, 6dB / oct pre-putting weight) +1 -3dBAudio frequency distortion 3%