GPSDO's are very nice if you want a bench source for calibration purposes. On the subject of NTP servers... GPSDO's would be relevant when doing holdover through a GPS outage measured in days.
My opinion if you want to serve reliable time through a longer GPS outage: add a WWV or WWVB based radio clock. e.g. a shortwave radio and https://www.eecis.udel.edu/~mills/ntp/html/drivers/driver36.html Tim N3QE On Wed, Feb 24, 2016 at 9:22 AM, Neil Green <[email protected]> wrote: > I currently operate a stratum 1 NTP server in the NTP pool using a U-Blox > Max-7Q GPS module with PPS attached to, variously, a Raspberry Pi via GPIO > or a Celeron mini PC via serial DB-9. The machine does nothing but serve > time to the pool. Operating systems of choice are Debian or FreeBSD. > > > What would be my next step up be, hardware-wise, in terms of improving > precision, stability, etc? A GPSDO? Budget is limited as far as these > things go - about £150 UK/$210 US. > > > I appreciate this is basic stuff compared to the usual discussions but > this doesn't seem the right question to ask on the NTP lists. Any help > appreciated. Thanks. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
