[time-nuts] How Rubidiums make their frequency

[Poul-Henning Kamp]

In message <20060420022710.95159.qmail at web50713.mail.yahoo.com>, Normand Martel
 writes:
>Hi..
>In his message, Paul-Henning Kamp writes that a
>drift-free standard has not been yet designed... 

I said "drift-free Rubidium" :-)

>And also, something else i don't understand: Why do
>the newer GPS satellites rely on Rb standards rather
>than Cs standards?

They last longer.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.