[time-nuts] Dithering vs. locking all the clocks to the OCXO?

[Magnus Danielson]

From: "Robert Lutwak" <Lutwak at Alum.mit.edu>
Subject: Re: [time-nuts] Dithering vs. locking all the clocks to the OCXO?
Date: Tue, 4 Jul 2006 10:34:01 -0400
Message-ID: <000701c69f76$e5219b20$6600a8c0 at lutwakhome>

> Are these permanent installations or portable?  If portable, how quickly do 
> they need to lock up to within sub-nanoseconds?
> 
> In a permanent (or semi-permanent) installation, it's hard to beat 
> GPS-steered cesium, with a loop-tau of DAYS to eliminate all the GPS jitter, 
> ionosphere effects, etc.

Actually, for these distances, pulling some fibre and do two-way time transfer
should not be too hard. Acheiving sub-nanosecond relative timing should not at
all be unfeasable but should rather be consider fairly easy.

Cheers,
Magnus