Yes, thanks Mike. I had found R-16 after your first message, of course I
violated rule #1, RTFM. Never imagined an adjustment for that, figured a
component failure. Adjusted per the manual, also adjusted R-9 on the OT-TR
board, and the display timebase, used some wire wedges to tighten up the 10M
band crystal.
A long way from mint, but seems to be working ok for now.
73, Curt KB5JO
----- Original Message -----
From: "Mike Hyder -N4NT-" <Mike_N4NT@charter.net>
To: "Ten-Tec Reflector" <tentec@contesting.com>; <rhulett1@consolidated.net>
Sent: Tuesday, March 22, 2011 9:04 AM
Subject: [TenTec] Fw: Omni C transmit off frequency
My manual shows the control of which I speak on page 3-56 on the 80708
Control Board. It is R-16. The manual says, "Trimpot R16 is adjusted to
a
value equal to the center position voltage of the OFFSET control, in
essence
the voltage representing NO offset."
----- Original Message -----
From: "Mike Hyder -N4NT-" <Mike_N4NT@charter.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Tuesday, March 22, 2011 8:41 AM
Subject: Re: [TenTec] Omni C transmit off frequency
Two things come to mind:
1. An internal potentiometer used to set the offset when the OT control
is
turned off.
2. The carrier oscillator, set by adjustment of three separate trimmer
capacitors. (I'm not sure this could even be the problem, but it did come
to
mind).
I'd suggest finding and adjusting #1 first because it requires no
instruments to accomplish and it is probably the culprit.
73, Mike N4NT
----- Original Message -----
From: "Hulett, Russell" <rhulett1@consolidated.net>
To: <tentec@contesting.com>
Sent: Monday, March 21, 2011 9:21 PM
Subject: [TenTec] Omni C transmit off frequency
Am back to working with "mint" Omni C I foolishly bought. After tuning
onto a sideband frequency, my transmitted signal is off frequency for
the
other op, as if RIT were on though it is not. Any ideas?
73, Curt KB5JO
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