anyone running GPS clocks in Southeastern Georgia?

Jay Ashworth jra at
Sun Jan 23 16:58:06 CST 2011

----- Original Message -----
> From: "Gary Buhrmaster" <gary.buhrmaster at>
> Most of the "brand name" GPS NTP solutions have a clock
> with is more than stable enough to survive without GPS
> lock for 45 minutes(*). Some of the more expensive units with
> temperature controlled oscillators have hold times in the
> many weeks. My guess is that the NTP ripples will be
> limited to those NTP servers just (or recently) booted
> which have not yet achieved a stable clock state.

Do such clocks reduce their advertised stratum when doing so? 

Or are they always considered "GPS-steered", and therefore there's no
meaningful change short-term?
-- jra

More information about the NANOG mailing list