[TenTec] OMNI C Mixer or PTO problem

[Joe]

I guess I made have assumed too much Mike. I thought all the later PTOs had 
an E terminial which allowed the PTO to be rapidly switched on and off when 
a remote VFO is used. If the OMNI does not have an accessory jack, then you 
can probably disregard  all of what I said.

Joe
----- Original Message ----- 
From: "Michael Silevitch" <msilevitch at coe.neu.edu>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Cc: "Michael Silevitch" <msilevitch at coe.neu.edu>
Sent: Monday, February 20, 2012 8:06 AM
Subject: Re: [TenTec] OMNI C Mixer or PTO problem


> 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?
>
> Regards
>         Mike K1PEV
>
>
>
> On 2/20/12 8:38 AM, "Joe" <joe at 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
>>rear
>>panel. If it is not jumpered, the PTO will not have the E (Enable)
>>present
>>will thus be disabled.
>>----- Original Message -----
>>From: "Michael Silevitch" <msilevitch at coe.neu.edu>
>>To: <tentec at contesting.com>
>>Cc: "Michael Silevitch" <msilevitch at 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
>>>was
>>> 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
>>>is
>>> no transmitter drive current. According to the manual the display
>>>output
>>> 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
>>>but
>>> 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
>>>
>>>
>>>
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>
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