[HECnet] A USNO GPS network time server is now in operation at Digital Equipment Corporation, Palo Alto, CA

[Peter Lothberg]

We report all clocks in Sweden that are at the different  labs to BIPM as "RISE Clocks",,
we have common view carrier phase, two-way communications satellite and two different
fiber transfer methods Stupi-Rise and carrier-phase/fiber to all the remote nodes.

(In common view GPS, you don't actually use the time from the GPS satellite, just
 the signal.)

Stupi has a active hydrogen maser (1.5x10e-15 in 10,000sec) to drive one time scale generator/phaser/stepper and
a cold-rubidium-atom thing  (1.x10e-15 in 3 weeks)  drive the second time-scale.

----- Original Message -----
> From: "Paul Koning" <paulkoning at comcast.net>
> To: "hecnet" <hecnet at Update.UU.SE>
> Sent: Friday, November 26, 2021 2:43:30 PM
> Subject: Re: [HECnet] A USNO GPS network time server is now in operation at Digital Equipment Corporation, Palo Alto, CA

> Don't you use GPS to do Cs clock verification?  It used to be people would
> actually carry those clocks around to do that, but I thought that procedure is
> obsolete now thanks to GPS.  It doesn't need to be done often given 10^-13 or
> so stability...
> 
> 	paul