ReceiverReceiving mode: Quartz lockedSensitivityï¼5uVImage rejectionï¼Over 75dBAudio outputï¼0ï½400mvPower requirementï¼DC 220V 50HzWireless microphoneMikeï¼Moving coil dynamic(Hand-held)Electret condenser(Body-pack Transmitter/Headset micophone)Antennaï¼Built-inRF outputï¼≤10mWBattery: Two(5)1.5V AA battery or 1.2V AA rechangeable batteryOne 9V battery or 8.2V Ni-cd rechargeable batteryBatteryï¼ï¼8 hoursOVERALL SYSTEMCarrier frequency rangeï¼VHF220ï½270MHzStabilityï¼±0.005%Max deviationï¼±25KHzDynamic rangeï¼90dBS/N ratioï¼ï¼90dBT.H.Dï¼ï¼0.5%Squelchoise lock dual squelchFrquency responseï¼60Hzï½16KHzOperating range: 95m(approximately 280 under typical conditions)