Digital RF Power Amplifier 400-470Mhz UHF 20W 30W 40W 50W 80W Radio DMR Amplifier FM Power Dearbuyers, Accordingto'srequirements,immediateshipmentisrequiredafterplacinganorder,sowefillintheactualinventory.Ifyouneedamodelthatisoutofstockornotenough,pleasecontactusforproduction,whichusuallytakes2-3days.Afterproductioniscompleted,wewilladdinventory.Thenyoucanmaketheorder,thankyouforyourunderstandingandcooperation, Bestregards if you want output at 80W, please use 13.8V 20A power supply, and input transmitter need to be 4-5W, 50ohm fake load it's not always 80W ,In the high section of 400-470, the peak value of power is higher,The low point of low powerThe center frequency is about 70W at 435m Please give me email for the user manual after you place order Features: 60527-60531 - Elegant Appearance: Black oxidized all-aluminum casing - Cooling fan works when the temperature is more than 40 - 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: 400-470MHz - Receiving Frequency: 50-1,000MHz - Working Mode: Half Duplex (Cannot receive and transmit at the same time) - Receiver Loss: -1DB0.4 - Output Power: 20W 30W 40W 50W 80W - Power Supply: DC 10-14V - Standby Current: 10-30MA - Cooling Way: Cooling fan works when the temperature is more than 40 - Size: 130 x 104 x 60mm (L*W*H) - Weight: 880g Package Included: - 1 x RF Power Amplifier ( 20W 30W 40W 50W 80W ,please choose in the option Box) How to Use it: Item Pictures: _x000D_