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Version is 1.00e.... which I knew was old and the intention of course was to order a new chip from QRPLabs... so I will do so forthwith. Probably get amp too at same time unless the amp orders are too stacked up.
From what I can see this was a fairly recent improvement though for sidetone? Nov 2019?
||- Eliminate the faint “Woodpecker” clicking when S-meter active, tuning or CW decoder updates
- Eliminate click at start end end of sidetone audio burst (that was due to sudden change in DC bias)
---------- Original Message ----------
From: Hans Summers <hans.summers@...>
Date: December 12, 2019 at 7:50 AM
What is your firmware version? Version 1.02 improved things in this regard too.
So, I did the mod on my 40m QCX a couple weeks ago.. replacing the original 10 uf electrolytic caps with the recommended 1 uf ceramic caps at C21 and C22 (IIRC).
Anyhow, though it is not what it was before, there still remains a bit of a thump on the keying. Is this the way it is...do others experience this?
I think I would find it fatiguing over time... in fact I did have a (rare) 45 minute rag-chew QSO last week - but not on the QCX.
Which is to say that if this was lessened to the tolerable level/removed then I would love to pair it up with the new 50 watt amp.
Anyhow, comments are welcome. I will admit I hear the same sort of thing on the Dave Benson DDS rigs from around 2002 or so.