Hmm! Something odd. When I transmitted, I could hear some splatter, a bit like adjacent channel QRM coming through the FT-450's internal speaker!
What on earth was this? When I pressed transmit and didn't speak, the power output meter on the rig was going up and down, as though I was saying something, with the strange 'QRM' coming out the speaker again.
Arrgghh!!!
After a moment of wondering what was happening, I pulled out and replaced the microphone connector (I have a cheap, but very good Behringer studio mic on a boom, with a handheld PTT switch). The same problem. I then pulled out the jack plug that connects the microphone to the input/PTT socket.
That was it! Seemed like the connection in that jack plug had gone a little dirty or lightly corroded, or just a weak physical connection somewhere.
Quite a few audio checks later, the problem had vanished - hopefully, for good!
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