Rubidium vs cesium

[Ken G Kopp]

An alert reader has caught my error in naming the type of standard used in
the GPS satellites.   It's indee "rubidium" and not "cesium".

73

Ken - K0PP
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[pa0pje]

Hi Ken,

well...

In the past there were both 2 caesium and 2 rubidium clocks on board,
according to this paper:

http://www.insidegnss.com/auto/Sept06GNSS_Solutions_secure.pdf

GPS satellites used to carry two caesium and two rubidium atomic
standards on board.
Subsequently, GPS switched to all rubidium clocks.
Galileo plans to use hydrogen masers instead.

73,
Peter - PA0PJE


Op 28-11-14 om 22:43 schreef Ken G Kopp:

> An alert reader has caught my error in naming the type of standard
> used in the GPS satellites.   It's indee "rubidium" and not
> "cesium".
>
> 73
>
> Ken - K0PP
> ______________________________________________________________
> Elecraft mailing list Home:
> http://mailman.qth.net/mailman/listinfo/elecraft Help:
> http://mailman.qth.net/mmfaq.htm Post:
> mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this
> email list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]
>

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