Hi I agree that there indeed lab grade rubidium's out there that run well below 1x10^13. There are also a bunch of orbital rubidium's that do the same sort of thing.
The idea is to see (short of buying several swimming pools) just how good a cheap rubidium can be made to work with "basement level" engineering. Each "system" should have: 1) A Thunderbolt w / antenna for very long term ($100) 2) A cheap rubidium for medium term ($100) 3) A DOCXO for the short term ($50) 4) Some FPGA / micro controller stuff to stitch it together ($150) 5) Power supplies ($30) 6) Enclosures and misc ($50) Hopefully the total cost per system will be below $500 at eplace prices. Unless there's a magic place out there that I'm not aware of, I'm not going to get a working 5065 or a working hydrogen maser at anywhere near that kind of price. Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Corby Dawson Sent: Wednesday, December 23, 2009 2:03 PM To: [email protected] Subject: Re: [time-nuts] Cheap Rubidiums Bob, While not considered cheap you may want to consider an HP 5065A. See my post "Short term stabilities of some HP 5065A" in the Sept. 2008 Time-Nuts. These were plotted in an uncontrolled environment. As you can see quite a few were in the <7X10-14th range at 1000 seconds. Corby Dawson ____________________________________________________________ Nutrition Improve your career health. Click now to study nutrition! http://thirdpartyoffers.juno.com/TGL2141/c?cp=Zc2LcaARTzBBQjz4oDt9XwAAJ1ABLZ FyqoH-WnHH1GJ345whAAYAAAAAAAAAAAAAAAAAAADNAAAAAAAAAAAAAAAAAAASQwAAAAA= _______________________________________________ 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. _______________________________________________ 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.
