CL Vancil wrote:
I don't really have access to all the radios to do some hunting and
modifying to each. So it would seem a bias circuit using a battery in
the PTT box is in order. That is if getting rid of this minor
distortion is worth the effort. Something like a .5 uf cap between
the switch and the mic element with a 1K resistor and a single AA
going to ground? Sound about right?

I've tried it with 10K and a 9V battery. I suppose a single cell and 1K
might be about right, not too sure.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com