On Dec 30, 2012, at 9:25 PM, Said Jackson <saidj...@aol.com> wrote: > Bob, > > But all those inductors surrounding the crystal will be sensitive to magnetic > flux variations and could cause spurs and jitter.. > > Bye > Said > > Sent From iPhone > > On Dec 30, 2012, at 18:04, Bob Camp <li...@rtty.us> wrote: > >> Hi >> >> Precision crystals have clips made from nickel. The posts are likely Kovar. >> That's been true for a *long* time. Neither one is very magnetic. Both >> likely are hard enough to be even less magnetic than they might be. >> >> Bob >> >> On Dec 30, 2012, at 6:27 PM, Magnus Danielson <mag...@rubidium.dyndns.org> >> wrote: >> >>> Bob, >>> >>> On 30/12/12 23:27, Bob Camp wrote: >>>> Hi >>>> >>>> A quartz crystal in insensitive to magnetic field. This being >>>> Time Nut's that's not the whole story. >>> >>> As I recall it, the steel clips sometimes used to hold the resonators is >>> claimed to be one of the sources for static magnetic field sensitivity. The >>> mounting has developed since then, so I wonder how much that is relevant to >>> new oscillators, but could still be possible to find for older ones. >>> >>> Cheers, >>> Magnus >>> >>> _______________________________________________ >>> 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. > > _______________________________________________ > 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.
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