[ntp:questions] Re: Philosophical question about strata

Richard B. Gilbert rgilbert88 at comcast.net
Thu Oct 13 02:57:38 UTC 2005

Lee Sailer wrote:

>First, thanks to everybody for replying.  However, my original question
>was not as clear as it could have been.  Let me continue...
>My company has 6 GPS time sources at various worldwide locations.  They
>are stratum 1.
>Every once in awhile, one or the other of them has a harddware problem.
> As a result, that one will drift a little.  That is, its offset will
>be 1, 2, or more seconds different from the other five.  When we detect
>this, we replce the hardware as a matter of course.
>Now, it seems to me that a stratum 2 server will never have this
>problem.  It gets time from several places, and uses the various
>algorithms to try to make sense.  The stratum 1 gets time from a bunch
>of satellites, and then if it screws up the calculation or has some
>sort of hardware glitch, then it is screwed.
>Therefore, I conclude:
>1.  If everything is working, stratum 1 is better than stratum 2.
>2.  If the stratum 1 hardware is suffering a slow degradation
>breakdown, then the stratum 2 will be better.
>Whaddya think 8-)
I think it makes a lot of sense for stratum one servers to peer with 
each other!

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