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FURTHER FOLLOW UP...
It appears I am on my own... and I managed to resolve my outstanding 
questions and concerns, and the headset has been modified and adapted 
for use with my transceivers.  No Pin 1 problem... no mic overload 
(because I employed a 10 dB pad on the audio signal and reduced bias 
voltage by about 40 %, and it plays just as I had hoped.  Fabulous 
audio, an especially high quality microphone. 
So ... never mind !    Case closed.   Happy days to y'all.
-------------------------  K8JHR  --------------------------
On 9/29/2012 9:04 PM, Richards wrote:
 
FOLLOW UP ---
OK... I knew this would happen...  I re-tested the whole mess, and I
think I have a new clue:
 
 
So, I THINK the question becomes:
 
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