Hi …. and GPS has cyclic issues on a 24 / 48 hour basis ….
Bob On Mar 23, 2014, at 8:58 PM, Tom Van Baak (lab) <t...@leapsecond.com> wrote: > Rule of thumb: > - really good OCXO have frequency drift rates of 1e-10 to 1e-11/day > - common Rb have frequency drift rates on the order of 1e-11/month > - Cs do not have frequency drift > - H-maser drift rates are 1e-15 to 1e-16/day > > /tvb (i5s) > >> On Mar 23, 2014, at 4:32 PM, Charles Steinmetz <csteinm...@yandex.com> wrote: >> >> Hal wrote: >> >>> Does anybody have data on the drift of Rs or Cs? >> >> Tom has some data posted at leapsecond.com (for H-masers, too). >> >> John Miles has some at ke5fx.com. >> >> John Ackermann has some at febo.com. >> >> I encourage you to roam widely over all three sites -- you will be well >> rewarded. >> >> Best regards, >> >> Charles >> >> >> >> _______________________________________________ >> 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.