There is a firmware image for the Reflock II that will lock a 10 MHz (or other relatively-low-frequency) oscillator to PPS. The last time I looked at it, it worked OK but not up to a "real" GPSDO -- which makes sense since it's a pretty basic PLL. Luis Cupido has updated the PPS code since then, though, and for all I know it might be much better now; I haven't had a chance to test the new code.
John ---- Brooke Clarke said the following on 04/21/2007 06:29 PM: > Hi John: > > Is there any data on how the Reflock II does as the basis of a GPSDO compared > to other ones? > > Have Fun, > > Brooke Clarke > w/Java http://www.PRC68.com > w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml > http://www.precisionclock.com > > > > John Ackermann N8UR wrote: >> You might look at using a Reflock II >> (http://www.tapr.org/kits_reflock_ii) to discipline a 32MHz VCXO from >> your 10MHz. Unfortunately, the Clock-Block phase noise is nowhere near >> good enough to use for an RF application, so that's not an option. :-( >> >> 73, >> John >> ---- >> >> Bruce Lane said the following on 04/21/2007 02:26 PM: >> >>> Fellow time-clockers, >>> >>> I have an interesting (if a bit annoying) situation. I would like to >>> use one of my existing GPS standards to improve stability on one of my HF >>> transceivers. The problem is that said transceiver, for reasons unknown to >>> me, uses a 32MHz reference oscillator. >>> >>> The highest GPS-lock frequency I have available is 10MHz. Suggestions >>> for using this to produce a 32MHz reference would be welcome, as my skills >>> for this kind of design are a bit rusty. >>> >>> Thanks much. >>> >>> >>> -=-=-=-=-=-=-=-=-=-=-=- >>> Bruce Lane, Owner & Head Hardware Heavy, >>> Blue Feather Technologies -- http://www.bluefeathertech.com >>> kyrrin (at) bluefeathertech do/t c=o=m >>> "If Salvador Dali had owned a computer, would it have been equipped with >>> surreal ports?" >>> >>> >>> _______________________________________________ >>> time-nuts mailing list >>> [email protected] >>> https://www.febo.com/cgi-bin/maian/listinfo/time-nuts >>> >>> >> >> >> _______________________________________________ >> time-nuts mailing list >> [email protected] >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
