Well, I have used the ever-faithful binary search on the Windows builds to try to find where the strange offset introduced itself.
The first build to show the odd offset (between NMEA and PPS ATOM) is 4.2.7p24. 4.2.7p23 seems to behave normally. The offset difference between PPS and NMEA is about 125 ms (e.g. NMEA -10, PPS +115) on 4.2.7.p24, on p23 the offsets of the two drivers are about the same. Again, I am using the older Garmin firmware, v3.20. I am not particulaly keen to move to a different firmware version because this version is working well, but I'll be happy to test any new builds on this firmware, if helpful. Larry _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions