Frequency Standards.

[Andre Kesteloot]

-------- Original Message --------
Subject: LF: Re: Frequency Standards.....
Date: Sun, 1 Dec 2002 01:12:15 +0100
From: "Stewart Nelson" <sn@scgroup.com>
Reply-To: rsgb_lf_group@blacksheep.org
To: <rsgb_lf_group@blacksheep.org>
References: <002001c298a4$647bf920$9eb901d5@main>

Hi Alan and all,

Thanks for the link.

Another fascinating read, with some awesome charts, is David Allan's
"The Science of Timekeeping", which can be downloaded (PDF, 1.13 MB) at
http://www.allanstime.com/Publications/DWA/Science_Timekeeping/

73,

Stewart KK7KA


 > Hi all, ever wondered what a Cesium Clock was...... or how a Rubidium
 > standard worked.....why do crystals "age".....  ??
 > It's all explained now....I found an old copy of an NBS Tutorial (dated
 > 1977) which covers all these and many more interesting facets of Time and
 > Frequency standards. I have scanned it and made it available as a 
.PDF file
 > in two parts, which can be downloaded from the index page of my web 
site. It
 > even covers the 2003 "must have" the Hydrogen Maser....anyone for 
parts in
 > 10^13 ??
 >
 > Cheers de Alan G3NYK
 > alan.melia@btinternet.com
 > http://www.alan.melia.btinternet.co.uk