....and the one right at the bottom 1.4204058 GHz is the atomic hydrogen "rest frequency" to those of us with a vague interest in Radio astronomy :-))
Alan G3NYK ----- Original Message ----- From: "Brooke Clarke" <bro...@pacific.net> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Thursday, December 15, 2011 3:13 AM Subject: [time-nuts] Why these Crystal Frequencies? > Hi Pete: > > Maybe you can shed some light on the common xtal frequencies table where there's no explanation given? > http://www.prc68.com/I/pdf/Crystal_Freq.pdf > An answer is not it's an "even" frequency or "it's an even binary frequency. That's true for most of these and the > factors are part of the table above. > The question is why do they exist? > such as: > 32.0 kHz > 40.0 > 75.0 > 76.79 > 76.8 > 76.81 > 96.0 > 3.072 MHz > 4.0 > 4.096 > 5.0 > 6.0 > 7.3729 > 8.0 > 8.192 > 9.8304 > 10.0 > 11.0 > 11.0592 > 11.2896 > 12.0 > 12.288 > 12.352 > 13.5 > 14.31818 > 15.36 > 16.0 > 16.384 > 17.734475 > 18.0 > 18.432 > 19.6608 > 19.44 > 22.1184 > 24.0 > 24.567 > 25.0 > 25.175 > 28.63636 > 30.0 > 1.4204058 GHz > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.end2partygovernment.com/Brooke4Congress.html > > > Peter Bell wrote: > > It's exactly 52 times the 1.2288MHz reference that IS95/CDMA2K uses - > > this may be a coincidence, but I somehow doubt it. > > > > Regards, > > > > Pete > > > > > > On Thu, Dec 15, 2011 at 3:46 AM, Joe Leikhim<jleik...@leikhim.com> wrote: > >> I have been watching this thread and may have missed something. My > >> questions: What is the purpose of the outboard OCXO VECTRON 63.8976Mhz? What > >> model number does this RB most closely resemble? > >> > >> -- > >> Joe Leikhim > >> > >> Leikhim and Associates > >> Communications Consultants > >> Oviedo, Florida > >> > >> www.Leikhim.com > >> > >> jleik...@leikhim.com > >> > >> 407-982-0446 > >> > >> Note to GMail Account users. Due to an abnormally high volume of spam > >> originating from bogus GMail accounts, I have found it necessary to block > >> certain GMail traffic. Please phone me if you believe your message was not > >> received. > >> > >> > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.