[ntp:questions] NTP absolute accuracy?

John Hasler jhasler at newsguy.com
Mon Nov 2 00:30:53 UTC 2009


Bill Unruh writes:
> Sorry, at 10usec, the distance away of the transmitter must be less than 3 km.

10usec at the transmitter.

> Also your system needs to see the start of the tone to 10usec which
> means that the tone would have to be about 1MHz which is a bit beyond
> audio.

There isn't any tone.  It's the UK equivalent of WWVB.
<http://resource.npl.co.uk/docs/networks/time/meeting3/martin.pdf>
-- 
John Hasler 
jhasler at newsguy.com
Dancing Horse Hill
Elmwood, WI USA




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