Problem solved. It wasn't RF since I wasn't transmitting while pushing the
buttons (XMIT DISABLED via N4PY). But, you did get me on the right track with
grounding.
Long story short, the 706 Ten Tec microphone does not have the shell of the plug
grounded. My extension cords did have a grounded shield which grounded the plug
shells on each end. But with no shell ground on the mike, it was for naught.
Grounding the braid to the shell did the trick.
Thanks and 73 de NA8M
John
----- Original Message -----
From: "K. Indart" <kitdart@ntelos.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, March 19, 2006 8:28 AM
Subject: Re: [TenTec] 706 Microphone VOX Switch Problem
Is your problem on all bands?; seems that RF is being picked up by the
extended mic cable. Check your RF grounding and try placing some ferrites
at the plug end of mic cable. Try rolling up the cable at the plug end; if
problem goes away, it looks like RF problem. Try dropping power by 50 to
75% and check again. These tests will help you determine what the problem
is.
73, Ken WA4RPH
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