>From an engineering point of view: Very few people really "NEED" a Rb or Cs as they are not really doing anything that requires that level of precision in frequency or accuracy in time (me included). These days a BC-221 or WWB is not good enough, but 1 Hz at X-Band is for almost all practical uses.
It's a hobby. Just enjoy it! FWIW, -John ================ > Rubidium is a 'Secondary' reference, meaning it must be calibrated against > a > 'Primary' reference such as a Cesium Beam or Hydrogen Maser or, perhaps, > your GPSDO. Cesium Beam Standards some times appear on e..y in various > states of disrepair but are fun to play with. There have been many > discussions about their merits, or lack there of, on this list and it > might > make interesting reading. I am amazed that, in my little shop, I can > generate something that seems 'locked' to the signal I get from my GPSDO > and > requires no calibration. > > Your GPSDO is 'linked' to the NIST Hydrogen Maser via the satellites. The > only problem comes when and if the satellites are not usable. > > I am a relative 'newbie' as well, so be careful. This stuff is addicting. > > Joe > > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Joseph Gray > Sent: Monday, October 05, 2009 2:09 AM > To: Discussion of precise time and frequency measurement > Subject: [time-nuts] Why would I want a rubidium > > > Sorry for the newbie question, but with two Z3801A's, what use would I > find > for a rubidium unit? I see lots of them on ebay from the Chinese sellers. > > _______________________________________________ > 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. > > _______________________________________________ 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.
