Baofeng Pofung GT-3TP Mark-III Two-Way Radio Transceiver, Dual Band 136-174/400-520 MHz Power Two-Way Radio GT-3TP Mark-III has High / Med / Low Power Settings Broad (Wide) / Narrowband (Narrow), High power / low power (5W / 1W), selectable. Selectable Frequency Step: 2.5/5/6.25/10/12.5/25 kHz. Frequency Range: 65-108 MHz (Only commercial FM radio reception), VHF: 136-174 MHz (Rx/TX), UHF: 400-520 MHz (Rx/TX). Note: Factory defaults frequency is 140-150/430-440MHz (8W Output), please reset the radio to reach 136-174/400-470MHz or program it to reach 470-520MHz (The software is the same as GT-3 Mark-II). Optimal SQL Setting, Optimal Modulation of TX/RX Power Tube, True 8W Output Power, Up to 11KM effective talking range. 128 Channels 50 CTCSS and 104 DCS, Function Busy Channel Lock "BCLO", Function "VOX" (Voice Operated Transmission), "OFFSET" (frequency offset for repeater access).