In article <[EMAIL PROTECTED]>, Uwe Klein <[EMAIL PROTECTED]> writes: >Hal Murray wrote: > >> There are a lot of low cost USB GPS gizmos that use the >> SiRF Star III. They suck for timekeeping. >> >Is there a reason known for this?
I assume it's a software bug/feature. The problem is drift/wander in the offset. The offset changes too slowly for normal jitter filters to work on it. http://www.megapathdsl.net/~hmurray/ntp/GPSSiRF-off.gif I forgot to mention another problem with those chipsets. They have a leap second bug. http://www.megapathdsl.net/~hmurray/ntp/leap-gps.gif -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
