Rick Jones wrote: [] > I suppose I could also try to see if I can get the powers that be to > spring for a GPS18 and see if I can indeed get signal in the machine > room(s) of interest. > > Speaking of which, I was just at the garmin website, and seems they > now have a GPS18 5HZ in addition to the regular GPS18. Is there any > benefit to the extra four pulses per second? > > rick jones
Rick, I have found that, compared to recent GPS receivers, the GPS-18 is not very sensitive. For example, I needed to mount the unit outside my window: http://www.david-taylor.myby.co.uk/ntp/FreeBSD-GPS-PPS.htm facing south, to get any signal, whereas my GPSmap 60CSx works fine /inside/ the same room. Even outside the window, the approximately 180-degree sky view resulted in some loss of sync, and I now have the GPS-18 on the roof which has a 30 degree slope to the west. Not ideal, but better than before. There is no advantage to the 5Hz unit with the present NTP implementation. Cheers, David _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
