Specifications:Frequency Range UHF:400-470MHzMemory Channel Up to:1024Frequency Stability: ±1.0ppmOperating Temperature: -30℃~ 60℃Operating Voltage DC: 3.7VDimension: (5.04 x 2.36 x 1.38)" / ()cm(L x W x H)( no including antenna)Weight About :6.74oz / g (Include in battery and antenna)Output power High: 2W Low: 1WOutput Consumption: Analog≤1.2A Digital≤0.8AFM Modulation(Wide / Narrow): 16KF3E@25KHz / [email protected] / 141KF3E@20KHz4FSK digital modulation 12.5KHz for data:7K60FXD 12.5KHz for data and voice :7K60FXEModulation Distortion: ≤5%Signal-To-Noise(Wide/Narrow): ≥45dB@25KHz ≥[email protected] Channel power: ≤-65dB ≤-60dBAudio Response: 1~3dBAntenna Port Spurious 9KHz-1GHz: ≤-36dBm1GHz-12.75GHz: ≤-30dBmDigital Protocol: ETSI-TS102 361-1,-2,-3Vocoder Type: AMBE 2TMAnalog Receive Sensitivity: -122dBm (12dB SINAD)Digital Receive Sensitivity: -120dBm (BER≤5%)Audio Power: 1WAudio Distortion: