Boards are basically non-existant for this 20 year old model. As to being "up
to spec", my recall is +/- 50 Hz.
73
Bob K4TAX
Sent from my iPhone
> On Aug 29, 2014, at 10:40 AM, Brandon Brinkley <bbrinkley@gmail.com> wrote:
>
> Ok. I suppose if the warm up isn't an issue or if I leave the power supply on
> then the OCXO vs TCXO isn't a big deal.
>
> As for the xtal osc board, would that be a cost prohibitive fix or should I
> just find a replacement board provided that's the problem?
>
> Service at TT said I should keep this for parts at a min for the VI+ since
> parts are scarce.
>
> I'll prob end up giving this to a new ham. Someone did that for me when I was
> young and had no funds. I just want it to be up to spec.
>
> I think an Omni VII is on the horizon once I get my Eagle.
>
> 73,
>
> Brandon AC4OU
>
>> On Aug 29, 2014, at 10:13 AM, "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
>> wrote:
>>
>> The OCXO is the reference for all bands. As to individual bands, there's a
>> crystal {10 of them total} being one for each band. The crystal oscillator
>> is supposed to be locked to the precision reference by a PLL. It may be
>> that the PLL and varactor diode is not able to pull the crystal on
>> frequency. All of this is on the Xtal Osc. - L.O Mixer Board.
>>
>> I have noted the absolute frequency will vary from band to band by a few Hz.
>> And unless the BFO frequencies are not absolutely correct, you may find a
>> slight frequency discrepancy from mode to mode.
>>
>> 73
>> Bob, K4TAX
>>
>>
>>
>>
>>
>>
>> ----- Original Message ----- From: "Brandon Brinkley" <bbrinkley@gmail.com>
>> To: <tentec@contesting.com>
>> Sent: Friday, August 29, 2014 8:48 AM
>> Subject: [TenTec] Omni VI Freq calibration
>>
>>
>>> My Omni VI+ is spot on. I also have an Omni VI stock no Option upgrades.
>>> I've noticed on 40 meters that I have to adjust 40 Hz high to be on freq.
>>> I've verified that with other radios. On 10.000 I have to be on 10.000.40
>>> to get the side tone to match up. On 20 meters it seems either spot on or
>>> maybe 10Hz off. I've let the radio warm up 30 mins or more, so the OCXO
>>> should be sufficiently warm.
>>>
>>> Any easy fix or should I look into a TCXO?
>>>
>>> 73
>>>
>>> Brandon AC4OU
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>>
>>
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