nanog mailing list archives

Re: strat-1 gps


From: "Robert E. Seastrom" <rs () seastrom com>
Date: Tue, 26 Jun 2012 16:33:35 -0400


Word around the campfire is that the 18x is jittery compared to the 18.

Maybe it only matters if you are super-anal.

Majdi, do you have any current info on this?

-r

Ryan Malayter <malayter () gmail com> writes:

+1 on the freesd-or-linux. with say a Garmin GPS-18x or whatever
timing puck. Have an intern or junior tech tackle it as a learning
exercise. The time geeks on comp.protocols.time.ntp seem to favor
low-power Soekris hardware (http://soekris.com/) for stratum-1s. You
need RS232 serial to get decent PPS; USB introduces tons of jitter.

If you have to have something pre-integrated and soon, I'd look at Meinberg:
http://www.meinberg.de/english/products/index.htm#network_sync

-- 
RPM


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