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In this video you will learn how to power a VHF backpack radio manufactured in the USSR such as R-105, R108, R109, which differ in frequency range. To do this, you need to connect a self-made or buy a ready-made step-down stabilizer for 5 volts not lower than 3 amperes. And make a divider for it on the operational amplifier LM 358 and power transistors at the output. You will see more details in this video. #Military_Radio #R105 #Inverter