QRP Labs 50W power amplifier kit is probably one of the cheapest pa’s on the market, yet it’s is capable to yield up to 50W of power into the antenna boosting your QCX transceiver’s QRP 5W output. This PA is built on 2 cheap and widely available IRF510 transistors which makes it easy to replace if needed. This PA is designed for only CW mode and is mono-band.
There are at least 3 more things this PA differs from others, though, and you should know these things before you buy the kit, in order to be an informed user and buyer. Watch this video and look for titles THING1, THING2 and THING3 on the screen!
Have fun building and using this PA!
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