Not quite as simple as the PTC, an alternative may be: http://shop.kuhne-electronic.de/kuhne/en/shop/accessoires/crystal-heater/Precision+crystal+heater+40%C2%B0+QH40A/?card=724
No it probably doesn't hold the crystal at it's optimum turn over temperature, but it will keep the temperature of a crystal approximately constant especially on a windswept hilltop. On 05/06/2017 09:35, Ulf Kylenfall via time-nuts wrote: > The Crystal heater clip wasa Murata "Posistor" soldered onto a clipand they > were marketed by Murata. > I once purchased a small amount of theseand used them as "poor man's ovens". > Although not perfect by far, they did theirjob and kept my UHF gear stable. > Murata dropped that product many yearsago and I have not been able to findany > similar product. The Posistors arelisted by eg. Digi-key but they do not > stock them. > Ulf - SM6GXV > > _______________________________________________ > 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. > -- Stephen Tompsett _______________________________________________ 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.
