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Re: [TenTec] OMNI C Mixer or PTO problem

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] OMNI C Mixer or PTO problem
From: Michael Silevitch <msilevitch@coe.neu.edu>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 20 Feb 2012 09:06:21 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Dear Joe

This sounds encouraging but can you give me a bit more detail? The OMNI
schematic doesn't indicate an E reference. The PTO block only has a few
outputs (VFO out, VFO shift and OT). None of these are linked to the
accessories socket. Also the manual doesn't mention that a jumper is
needed on the accessories socket. The Corsair does have a jumper installed
when not using an external VFO. What pins on the socket need to be jumped?

         Mike K1PEV

On 2/20/12 8:38 AM, "Joe" <joe@n4yg.com> wrote:

>Check the E voltage at the PTO. If this voltage is not about 8 volts, the
>PTO is disabled. The E voltage is jumpered at the ACCESSORY jack on the
>panel. If it is not jumpered, the PTO will not have the E (Enable)
>will thus be disabled.
>----- Original Message -----
>From: "Michael Silevitch" <msilevitch@coe.neu.edu>
>To: <tentec@contesting.com>
>Cc: "Michael Silevitch" <msilevitch@coe.neu.edu>
>Sent: Monday, February 20, 2012 7:18 AM
>Subject: [TenTec] OMNI C Mixer or PTO problem
>> I am trying to understand a problem with my newly purchased OMNI C. It
>> operating fine according to the person who sold it to me (and I believe
>> him!). Upon arrival it seems that the PTO has no output or there is a
>> problem mixing the PTO signal. The reason I say this is because I am
>> observing displays of 9MHz, 1 MHz or 91MHz depending on the band. There
>> no transmitter drive current. According to the manual the display
>> is
>> a sign that mixing with the PTO is not occurring. I assume this also
>> correlates with no transmitter current. I think (hope) the problem is
>> something simple that was caused by the rough and tumble of shipping. I
>> did
>> try things like testing the VFO out-in jumper, jiggling cables, leaving
>> the
>> unit on overnight, etc. I do have the option of shipping the unit back
>> I
>> would rather fix it if it is a simple fix.
>> Another question. Will the Corsair 263 VFO work on the OMNI C?
>> I would greatly appreciate any advice on this problem.
>> Regards
>>         Mike K1PEV
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