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I believe Dave has identified your problem area, if you wired up your mic jack per the wire up instructions your Kenwood/ Beofang mic won’t work. That mic has the audio/bias on the ring and ground on the sleeve the tip is not use for this purpose. So you’ll need to wire your uBITX or BITX to reflect that configuration unless you are only going to use it with your BITX’s. By the way also PTT is on the sleeve of the 2.5mm plug.