[time-nuts] Time nut newbie

Bob Camp lists at rtty.us
Wed May 1 07:00:33 EDT 2013


Hi

It was tired old eyes and tiny numbers on the calculator ….That plus to much distraction to double check things. 

Bob

On Apr 30, 2013, at 9:57 PM, Rex <rexa at sonic.net> wrote:

> It doesn't affect the general magnitude conclusions by Bruce, but as long as we are making corrections, my calculator seems to think
> 60 * 60 * 24 * 12 = 1036800 seconds in 12 days, not 1024800.  That does come out to 115.7 days for 1 sec error. Maybe the 12-day number was a typo?
> 
> -Rex
> 
> 
> On 4/30/2013 12:57 PM, Bruce Griffiths wrote:
>> 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
>>> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.



More information about the time-nuts mailing list