[time-nuts] Time nut newbie
Bob Camp
lists at rtty.us
Tue Apr 30 19:30:30 UTC 2013
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-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Tim Bastian
Sent: Tuesday, April 30, 2013 1:50 PM
To: time-nuts at 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
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