Dear Joe
That's unfortunately right. The OMNI PTO circuitry does not have an Enable
line. The Corsair does.
Any other wisdom?
Regards
Mike K1PEV
****************************************
On 2/20/12 9:22 AM, "Joe" <joe@n4yg.com> wrote:
>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@coe.neu.edu>
>To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
>Cc: "Michael Silevitch" <msilevitch@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@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@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
>>>>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
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>> TenTec@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
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>>
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