[ntp:questions] NTP absolute accuracy?

David Woolley david at ex.djwhome.demon.invalid
Sun Nov 1 20:59:44 UTC 2009


John Hasler wrote:

> Should be as good as WWVB, which is good to within 100usec.  The

Most receivers only use the slow code (including the simple hardware 
solutions for ntpd).  For high accuracy you would have to sync to the 
carrier, and possibly use the fast time codes.

> propagation delay is highly predictable at 60KHz.  These stations can
> also can provide extremely aaccurate frequency references.




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