I think Allard's solution is likely minimal and acceptable. ?For not so minimal, here's somebody who has added sidetone injection at the volume control:
??
/g/BITX20/message/27410
and also solved the rx kerchunk.
A few notes here on exactly what the devil that diagram might be trying to say: ?
/g/BITX20/message/28942If all you want is sidetone injection, should be possible with 1 or 2 resistors out by the volume control.
Jerry
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On Thu, Jun 29, 2017 at 04:40 pm, Allard PE1NWL wrote:
If you find a minimal mod that gives a better sidetone please share it and I will update the modification instructions - thanks!