Re: [HearSat-L] What time is it, really?
Glenn Bock (gbock@umd5.umd.edu)
Fri, 4 Jun 1999 14:08:20 -0400 (EDT)
I use either GPS clock (the clock that's part of the GPS receiver) or
the cheaper solutuion is to find a shortwave radio and listen in on 2.5,
5, 10, 15, Megahertz, they do exact seconds and even add in the
correction in 100ths of a second (or is it 10ths) in the first few
seconds of the minutes broadcast. Just realize that even the satellites
are not know to an accuracy of 1/10th second due to the fact they use
approximate corrections in the elements..
Glenn Bock
On Fri, 4 Jun 1999, J. Lee
Blanton wrote:
> Hello fellow satellite fans:
>
> The question of "What time is it?" is very important for making accurate
> satellite observations but isn't very easy to answer. I've seen ads for
> so-called "atomic clocks" that are available from Radio Shack and elsewhere
> which are synchronized with low frequency time signals. Many of these
> don't even have a 'seconds' display or can't be set to UTC. Does anyone
> know of a really good one suitable for satellite observations? An accuracy
> of 0.1 second or better would be nice. I'd appreciate any advice. Thanks.
>
> Lee
>
> _____________________________________________________________________________
> J. Lee Blanton email: blanton@pe.net
> Temecula, California Tel/Voicemail/FAX: (909) 699-6903
> 33.519N 117.102W 413m
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