I know I don't "need" any of this stuff. I was just wondering what I could do with a rubidium vs what I already have.
On Mon, Oct 5, 2009 at 10:58 AM, J. Forster <[email protected]> wrote: > 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. > > _______________________________________________ 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.
