Yes, Pete. I’d appreciate receiving that procedure as well. It makes a lot
of sense… and I feel more encouraged to give it a try! My problem definitely
only shows up after the rig warms up…
Thanks again!
Jim AF3Z
Jim Goudie — jagoudie@comcast.net
610 Kraybill Church Rd
Mount Joy, PA 17552
> On Jan 28, 2022, at 4:22 AM, gerd Groos <df9ts.cw@gmail.com> wrote:
>
> Pete,
>
> could you share the procedure you mentioned? I have a OMNI VI that I love.
> PLL board has the two PLL circuits out of sync, I have no continous frequency
> output from VFO anymore.
> Checked and tried a lot, hardware seems ok, just need to know how to do the
> adjustments.
>
> BR
>
> Gerd DF9TS
>
>> On 28. Jan 2022, at 05:28, Jim Goudie <jagoudie@comcast.net> wrote:
>>
>> Thanks, Pete…
>>
>> I didn’t check all the bands carefully or systematically. I heard it on
>> several. I’ll go back and be more careful about it. And yes, it seems to
>> happen after it has been on for a while…. but not very long; 5 minutes or
>> so?
>>
>> If it gets too involved, with the crystals and setting the lock range, etc.,
>> I may have to punt. My experience and my “bench” may not be up to the
>> challenge. We’ll see.
>>
>> Thanks very much for your input. I’ll save all the help I get and refer to
>> it as the project progresses. Fortunately, I have my old trusty 544, Triton
>> IV digital, that I bought used in 1982 ;-). It is enjoying being my #1
>> radio again… and doing quite well.
>>
>> 73!
>> Jim AF3Z
>>
>>
>> Jim Goudie — jagoudie@comcast.net
>> 610 Kraybill Church Rd
>> Mount Joy, PA 17552
>>
>>> On Jan 27, 2022, at 10:32 PM, Peter Bertini <radioconnection@gmail.com>
>>> wrote:
>>>
>>> First, does it only on a few select bands, or on all bands? If one or two
>>> bands only chances are it is a hetrodyne crystal that has aged and is going
>>> out of lock. Some of those crystals are used one more than one band. One
>>> clue is that the rig will work well when cold, and then act up when the
>>> pizza oven that encloses those PLL boards gets hot. TenTec provided no
>>> airflow, and there are two pass regulator transistors on the aluminum lid
>>> that adds to the heating problem. There is a procedure for setting the
>>> lock range for each crystal that requires using a good scope to monitor a
>>> point on the uP control board. I've fought that problem on three or four
>>> Omni VI rigs I own. Pete
>>> _______________________________________________
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>>> TenTec@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>
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