> 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.

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@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. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

I've got one as well replaced that pot with 10 turn pot and electrolytic replacement Content by Scott Typos by Siri On Feb 6, 2018, at 9:05 AM, paul swed <paulswedb@gmail.com> wrote: 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@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. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.