I've said it before and been criticized but one needs a counter to resolve the
required frequencies to 1Hz or better. Confirming SSB USB & LSB frequency
requires measurement, not listening.
Bob, K4TAX
Sent from my iPhone
> On Oct 19, 2014, at 1:30 PM, wt4t@reagan.com wrote:
>
> Hi Mike
> The radio is off across all modes. Think maybe its time to send it home for a
> checkup. I just don't have a bench thats tight enough to align what needs to
> be done ,as explained by some of the guys ,so far. I guess the days of
> Heathkit test gear except for boat anchors is over. still looking for a
> rebuild board for the swan supply, I found they no longer exist.
> thanks
> 73
> dale wt4t
>
> -----Original Message-----
> From: "Mike Bryce" <prosolar@sssnet.com>
> Sent: Sunday, October 19, 2014 12:35pm
> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
> Subject: Re: [TenTec] OMNI-VI question
>
> DALE,
>
> is it off on one mode or all of them?
>
>
> Mike, WB8VGE
> SunLight Energy Systems
> The Heathkit Shop
> http://www.theheathkitshop.com/
> J e e p
> o|||||||o
>
> A man with one clock knows what time it is. A man with two clocks is never
> sure.
>
>
>
>> On Oct 19, 2014, at 1:27 PM, Ken Brown <ken.d.brown@hawaiiantel.net> wrote:
>>
>> Whether you can fix it yourself depends on your access to accurate
>> instruments and your skill at using them.
>>
>> The frequency accuracy of the Omni VI depends on the accuracy of the
>> reference oscillator which determines the accuracy of the VFO PLL AND the
>> BFO accuracy. The BFO in the Omni VI IS NOT LOCKED TO THE 10 MHz reference
>> oscillator. The BFO has several adjustments for the different frequencies
>> used for USB, LSB, CW and FSK. Those adjustment interact, so it is necessary
>> to do them in the correct order, and them do them again.
>>
>> You will need a way to accurately measure and adjust the 10 MHz reference
>> and the BFO frequencies. A frequency counter with a known accurate reference
>> would be the easiest way to go.
>>
>> You mention having a signal generator. If that has an accurate reference you
>> could use it and a general coverage receiver to listen to the beat between
>> your sig gen and whichever oscillator you are adjusting. You will have to
>> play around with methods of getting a sample of the oscillator and your
>> signal generator at the right amplitudes to hear the beat nicely on the
>> receiver.
>>
>> DE N6KB
>
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