NavList:

Alex and Bill,

The two atomic clocks that I have used are an Oregon Scientific and a Seiko. Both have displayed a symbol when the synch signal is received. I am assuming then that synchronizing is taking place when ever this symbol is displayed. Each of the clock's have on occasion shown a one minute error with the synch signal symbol showing. I suspect that some type of local interference caused this but the true cause remains unknown. Each time the minutes were observed off (checked by shortwave time tick) the atomic clocks were manually reset to correct time to only reset automatically back to the one minute error again. Then a day or two later the correct time displays properly. This experience has ruined me for trusting atomic clocks or watches for serious celestial navigation experiments or for voyaging CN.

Greg Rudzinski

] Re: Extremely poor conditions??
From: Alexandre Eremenko
Date: 22 Mar 2012 21:04
Greg,

I think my new reduction (message Atomic clock to the list)
shows beyond any reasonable doubt that the clock was 1 min ahead.

It only remains to understand how is such thing possible.
(And then to convince Bill that it actually happened:-)
It seems to me that an "atomic watch" is a usual quartz watch which is
automatically adjusted by radio signans. How frequently?

Now an ordinary quartz watch (non-atomic) will go away few seconds
per YEAR. So how exactly this happens that an adjustment of such watch
leads to 1 minute error? Can you describe the procedure of adjustment?
I cannot imagine this procedure.

Alex
----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------