Hi Either I need a new calculator or a new set of eyes....
Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bruce Griffiths Sent: Tuesday, April 30, 2013 3:57 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Time nut newbie 12 days is 1024800 s ie just over 1 million seconds so a frequency offset of 0.1ppm results in a time error of ~ 0.1s not 1s. 1sec error would occur in just under 116 days, Bruce Bob Camp wrote: > Hi > > If you take a look down in the fine print on the OCXO spec, the aging rate > is 100 ppb / year in the first year. If you are off by 0.1 ppm (100 ppb) > your clock will gain a second in less than 12 days. > > Bob > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Tim Bastian > Sent: Tuesday, April 30, 2013 1:50 PM > To: time-nuts@febo.com > Subject: [time-nuts] Time nut newbie > > Hi all, > > I'm a time nut newbie. My obsession started with the search for an accurate > chronometer to carry on my boat for celestial navigation. Yes there still > are a few of us left that practice the art. > > My current project is a quartz chronometer using a DS32Khz tcxo oscillator > and two 74HC4060s (+ or- 10 seconds / year). > > For my next project I'm looking at an Abricon Part Number AOCJY2-10.000MHZ > ocxo 5 ppb running through a pic and using the algorithm posted on > http://www.romanblack.com/one_sec.htm. I'm shooting for + or - 1 seconds / > year. > > Is there an archive of old posts that might be helpful in answering some of > my questions and for getting ideas. > > Thanks, > > Tim KK4FQB > > Sent from my Motorola ATRIXT 4G on AT&T > _______________________________________________ > 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.