[TenTec] Omni VI Freq calibration

[Barry N1EU]

Could it be USB oscillator correctly aligned and LSB oscillator off by
40hz?  Did you mean 10.000.040?

Barry N1EU


On Fri, Aug 29, 2014 at 11:13 AM, Bob McGraw - K4TAX <RMcGraw at 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 at gmail.com
> >
> To: <tentec at 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
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>>
>
>
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