I have not received my uBitx yet. I’ve been? reading this forum for about two weeks. Looks like PA failures is a huge problem.

Are the two main causes reverse DC power and high SWR?

For the DC polarity problem how about a full wave rectifier at the DC input? Two diode voltage drop a problem with this approach?

What would be the best way to limit PA? power out to a very small value to allow a manual tuner to be used for the SWR issue?

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Tnx

John

WA8US

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