Dear Joe
I'll look into the external VFO question. I have the manuals for both the
243 and the 263 so that should tell me something. Also I son't see that
there is a jumper needed on the accessories socket like the Corsair has. I
could be wrong about this but that's what is seems to be.
Regards
Mike
On 2/20/12 1:35 PM, "Joe" <joe@n4yg.com> wrote:
>Well Mike, I guess the next thing to do is to see if there is anything
>coming out of the PTO. You could use one of the scopes that everyone has
>been talking about or an RF probe. It is looking like the PTO may have no
>output. You can check that at the VFO OUT jack on the rear. That brings
>up
>an interesting question. If there is no way to turn the PTO off, how do
>they
>handle remote VFOs?
>
>----- 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 11:45 AM
>Subject: Re: [TenTec] OMNI C Mixer or PTO problem
>
>
>> 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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