Hi A few ideas for checking things out:
If you check your reference against CHU or one of the other standard stations what do you see? They all are transmitting UTC, so they should agree. Propagation delay from half way around the earth is around 67 ms (12.5K miles / 186282 miles per second). That's pretty small compared to a 20 second error. Any time station anywhere would do fine as something to check against. Another check would be to lock up a computer via NTP and see what it shows compared to your reference. Even a "bad" NTP setup will be plenty good enough to help troubleshoot something like this. Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Chris Albertson Sent: Thursday, August 04, 2011 12:02 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] What is NIST "official time" ? On Thu, Aug 4, 2011 at 7:16 AM, Christopher Quarksnow <[email protected]> wrote: > Wondering whether anyone can clarify what discipline the Boulder, CO NIST > facility is broadcasting (or showing on time.gov) and qualified as "The > official U.S. time". > It appears to be about 20 seconds slower than UTC I think something must be wrong with the way you are measuring. Propagation can't time add 20 seconds Can you explain exactly what how you are measuring. Chris Albertson Redondo Beach, California _______________________________________________ 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.
