DYKB 100W FM VHF RF Power Amplifier Board DIY KITS W MRF186 Transistor tube For Ham Radio Walkie talkie | Инструменты

Balun 1:1 4 9 16

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100W FM VHF 80Mhz-170Mhz RF Power Amplifier Board For Ham Radio DIY DC 24v
    　   Description: Features: 

NOTE: MRF186 old used

These are all the parts, it need you diy welding

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
100% Brand New
 1 x 100W FM VHF 80Mhz-170Mhz RF Power Amplifier Board For Ham Radio DIY kits DC 24v

 

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