Please send any questions. Communication Range Auto Alert. MIC Auto Gain Control. Weather Broadcast Channel Alert. RX: 108.000 – 520.000 MHz & 700.000 – 999.990 MHz. TX: 136.000 – 174.000 MHz & 400.000 – 470.000 MHz. Channel Spacing: 5/10/ 12.5 /15/20/25/50/100 KHz. Operating Voltage: DC 13.8V 15%. Operating Temperature: -20 +60. RF Power: VHF: 50/20/10/5W; UHF: 45/20/10/5W. Frequency Modulation: F3E, F2D, F2A. Maximum Deviation: 5KHz (Wide Band), 2.5KH z (Narrow Band). Sensitivity: 0.8 uV (10dB SINAD, 108-137 MHz). 0.2 uV (12dB SINAD, 136-174 MHz & 400-470 MHz). Maximum AF Output: 2W (8O, 10% THD). Dimensions(W×H×D): 140mm 42mm 168mm. Large backlit LCD display, easier operation. Stable RF power (50W VHF / 45W UHF). 3.1000 store channel, for professional users. Mobile radio specific energy-saving circuit design, save the vehicle battery consumption.