I agree that they are an amazing value but what kind of operating lifetime do the Rb tubes have? SRS has this to say:
>Historically, the lifetime of rubidium frequency standards has been >dominated by rubidium depletion in the discharge lamp. To avoid excess >flicker noise, manufacturers would load less than 100 µg of rubidium >into spherical discharge lamps. The PRS10 uses a lamp with a side arm >loaded with 1 mg of rubidium. This design eliminates rubidium >depletion as a failure mechanism, and provides better temperature >control without excess flicker noise. http://www.thinksrs.com/products/PRS10.htm On Sat, 31 Dec 2011 18:56:32 -0000, "Rob Kimberley" <[email protected]> wrote: >I'm also enjoying all the feedback since my original post. > >I look at this way; these Rubidiums are probably in the region of $1000 new. >We're getting them for a song. OK, you take the risk of the odd dud, but >that's the way of fleabay. I will let you all know how UK Customs performs >on my shipment if & when it arrives! > >Happy New Year to all Time Nutters out there. > >Rob Kimberley _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
