[time-nuts] Cs stability

Didier Juges didier at cox.net
Tue Jul 17 06:23:52 EDT 2007


Or see a failed TIC test which actually displayed the delay in a piece of
coax showing the temperature in the room as the air conditioning was turning
on and off over night.

http://www.ko4bb.com/Test_Equipment/data/HP5370A coax cable delay.png

I did not calibrate this thermometer though :-)

Didier KO4BB

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Tom Van Baak
Sent: Monday, July 16, 2007 9:47 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Cs stability

> Who was it that said; every clock is a thermometer?

Even a short length of coax is a thermometer if you look
close enough. See the 50 fs / °C tempco at test #6:

http://www.leapsecond.com/pages/tadd-1/

/tvb 



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