Description
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100W FM VHF 80Mhz-170Mhz RF Power Amplifier Board AMP DIY KITS for Ham Radio C4-001 Features: NOTE: MRF186 old used
PCB SIZE :13.5CM x5cm Amplifier output: 80--100W Frequency range 80--120Mhz ( input 1--1.5W) 140--170Mhz (3--4W) Power : DC 24--26v current: 5-7A 1: installation steps According to the picture data according to welding, installation drawings. 2: debugging steps: Welding completed, installed radiator First, do not install MRF186 (XRF186) Connect the power supply 24V adjust the bias voltage of 3.5V and then disconnect the power supply Install the MOS power tube MRF186 (XRF186), pay attention to unplug the electric soldering iron, soldering iron welding using waste heat, preventing electrostatic breakdown of MOS power transistor 3: connect the power meter, dummy load, first turn on the power, adjust the quiescent current, 200--800MA, 400MA is the best 4: the test power connected to push, push, push FM maximum 1.5W, maximum VHF 4W FM and VHF, the basic do not adjust, promote the UHF Max 7W-8W, UHF adjusts the variable capacitor to obtain optimum output power Warning: input maximum FM VHF 1.5W, maximum 4W, maximum 7W-8W output UHF, maximum 100W, Output Disable open circuit, short circuit Prohibition of illegal use of power amplifier, illegal use has nothing to do with others Package Contents
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