Hi Ignacio, Thanks for the response. I've got a UT+ in the parts box. But that's not the problem I'm trying to solve. I'm trying to make the best GPSDO that I can make using a nav receiver at the moment. Call it an obsession if you like. It's OK if I don't have corrections to the nanosecond for each PPS. But I can see the nav receiver wandering around; especially on cloudy days, (the antenna is in the attic, so that's about the best I can do for that) and it just seems to me that I should be able to do a general correction for nav position errors. Sorry if my naive posts are starting to get on people's nerves.
Bob >________________________________ > From: EB4APL <eb4...@cembreros.jazztel.es> >To: time-nuts@febo.com >Sent: Sunday, March 23, 2014 7:35 PM >Subject: Re: [time-nuts] Nav Receiver Sawtooth Correction? > > >Bob, > >The sawtooth is generated by the granularity of the GPS receiver clock >not being synchronous with the recovered PPS. The receiver program can >calculate the correction to be applied to the next PPS and outputs it in >a message, bu only in timing receivers, this is not a useful thing in >navigation receivers and I think that it cannot be calculated using the >satellites' position, it is a receiver "defect". >Why don't you buy a timing receiver? An used Motorola Encore M12+ >timing receiver can be bought by $35 or less (ebay items 290656401551 or >301131583613. The seller is a known Time Nuts supplier). An UT+ or GT+ >even for quite less. > >Regards, >Ignacio EB4APL > > _______________________________________________ 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.