Steve Ellington wrote:
>
> Clark Savage Turner WA3JPG wrote:
> >
> > costs about $50. Now I will go in there with my frequency
> > counter and carefully determine whether it is the oven/crystal
> > that is drifting or the BFO. Anyone ever have to deal with
> > either of these with any tips? I plan to measure the freq of
> > the output of the 10 MHz master oscillator over an hour or two
> > at intervals of about 10 minutes to see what that is doing. I
> > figure that ought to tell me enough of the story to get it
> > right.
> >
> > Clark
> > WA3JPG
> >
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>
> Clark:
>
> The bfo trimmer has been know to cause problems. I beleive it's the
> brown one on the tx/audio board. A counter on the output of the bfo will
> tell the story or just a stable receiver with a short wire near the tx
> board can easily receive it and check for drift. My trimmer developed a
> tendency to jump and a shot of wd-40 cleaned it right up. Give it some
> time to dry before calibrating it.
>
> Steve
>
> --
> FAQ on WWW: http://www.contesting.com/tentecfaq.htm
> Submissions: tentec@contesting.com
> Administrative requests: tentec-REQUEST@contesting.com
> Problems: owner-tentec@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
I had the same problem. I cleared it up with a shot of TV tuner
cleaner. Rotate the trimmer full cycle about 5-6 times. Retune it by
ear on WWV and no more problems for several years. TenTec service
coached me on this.
73 de John, WA5TWL
--
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Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
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