Charles, You can always upload time-related material to my Manuals page:
www.ko4bb.com/manuals Didier KO4BB On November 3, 2014 2:43:47 PM CST, Charles Steinmetz <csteinm...@yandex.com> wrote: >Tom wrote: > >>As I understand it, his project is to use the high frequency output >>of a ublox NEO-7M to discipline a MV89 with a James Miller-style >analog PLL. >> * * * >>(perhaps someone can post an English translation for us) > >Tom, > >I have a machine-translated PDF (~2.5MB), but nowhere to put it >up. If you have web space for it, please feel free to do so >(assuming that Karen does not object). > >I have reservations about the potential of any Miller-style GPSDO, >because using an analog PLL essentially guarantees that the crossover >to GPS will be at a tau orders of magnitude lower than it should be >-- the Miller unit crosses over about 3 OOM too low (see attached >plot, from <http://www.leapsecond.com/pages/gpsdo/>). > >The beloved Thunderbolt also crosses over about 2.5 OOM too early, if >you use the factory loop settings (id.). But it has an ADPLL with >adjustable parameters, so a time nut can tune the loop for best >performance with the particular OCXO in the unit. (See ><http://www.ke5fx.com/tbolt.htm>.) > >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. -- Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I do other things. _______________________________________________ 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.