[aprssig] gpsd and ntpd

Joe Bennett aprs at ka3nam.com
Fri Mar 15 08:58:39 EDT 2013

Yep, it can be done... Have a few NTP servers configured this way with 
PPS... Deffinately keeps the server more accurate than NTP alone... 
Getting date and time from GPS depends on the GPS used, as jitter can be 
quite high and hard for NTPd to correlate..


On 03/15/2013 05:53 AM, Jason KG4WSV wrote:
> As best I recall, NTP needs the PPS signal from the GPS.  I don't
> think this is compatible with gpsd.
> It doesn't really make sense that gpsd would make a good clock source;
> there's too much nondeterministic behavior in the network connection.
> The NTP protocol has some provisions for determining latency, etc, but
> gpsd doesn't.
> -Jason
> kg4wsv
> _______________________________________________
> aprssig mailing list
> aprssig at tapr.org
> http://www.tapr.org/mailman/listinfo/aprssig

More information about the aprssig mailing list