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 ATRIX 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.