Digital RF Power Amplifier UHF 20W Radio DMR Amplifier FM Power Amp. Features: - Elegant Appearance: Black oxidized all-aluminum casing - Cooling fan works when the temperature is more than 40â??- RF-IN port, RF-Out port to connect external antenna (antenna not included) - Dual-color LED Indicator: Green shows standby status; Red shows transmitting status Parameters: - Item Name: RF Power Amplifier - Input Power: 1-5W - Modulation Mode: DMR, C4FM, DPMR, CW, FSK, P2S, FM - Transmitting Frequency. Receiving Frequency: 50-1,000MHz - Working Mode: Half Duplex (Cannot receive and transmit at the same time) - Receiver Loss: -1DB±0.4 - Output Power. Power Supply: DC 10-14V - Standby Current: 10-30MA - Cooling Way: Cooling fan works when the temperature is more than 40â?? - Size: 130 x 104 x 60mm (LWH) - Weight: 880g Package Included: - 1 x RF Power Amplifier How to Use it. The item "20W UHF 400-470MHZ Ham Radio Power Amplifier for Interphone DMR DPMR P25" is in sale since Friday, January 25, 2019. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "flyxy2015" and is located in ShenZhen ,Guangdong. This item can be shipped worldwide.