[TenTec] Fw: Omni C transmit off frequency
Mike Hyder -N4NT-
Mike_N4NT at charter.net
Tue Mar 22 07:04:35 PDT 2011
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 at charter.net>
To: "Discussion of Ten-Tec Equipment" <tentec at 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
> 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 at consolidated.net>
> To: <tentec at 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
More information about the TenTec