[time-nuts] Heathkit GC 1000 Most Accurate Question

paul swed paulswedb at gmail.com
Tue Feb 6 09:05:12 EST 2018


Exactly they are the small open air pots.
Just one possibility along with the other good suggestions mentioned.
Regards
Paul
WB8TSL

On Tue, Feb 6, 2018 at 7:29 AM, Dave B via time-nuts <time-nuts at febo.com>
wrote:

>
> > Bill
> > I see the manual is online for the GC1000.
> > The 1KHZ tone decoder may be suspect in that its drifted off frequency.
> Its
> > a little ne-567 chip with a pot.
> > ne 567s were never all that great...
> > Regards
> > Paul
>
> ------------------------------------------------------------------------
>
> 567's are not too bad, not "precision", but not bad.
>
> Small pot's are not great for long term stability either, especially if
> the track/wiper is exposed.
>
> 73.
>
> Dave.
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