Bob,
It is true you would like to see satellites from as wide a distribution in 
the sky as possible for an accurate fix. I was assuming that Barry was 
going to use his set up for timing the seismic data sampling. In which case 
you don't really need as good a pattern as you would need for a fix and 
directly over head is the most likely to be avaliable.



At 10:34 AM 9/2/01 -0400, you wrote:
>Barry,
>   Jim's reply is a little misleading.  A GPS receiver can get an
>accurate fix only if it can see some satellites near the horizon.  Put
>your antenna where it can see as much of the whole sky as possible, not
>"directly overhead".
>Bob Barns
>
>
>Jim Hannon wrote:
> >
> > Barry,
> > The GPS satellites are not in geosynchronous orbit so they move all over
> > the sky anywhere in the world. You should position you antenna so that it
> > "sees" as much of the sky directly overhead as possible.
> >
> > At 05:51 PM 9/1/01 -0700, you wrote:
> > >Hi all
> > >       Well I finally hooked up my Oncore GT+ board w/ interface. I'm
> > > trying the
> > >Tac32 program first. I had one question about the hardware. Do I need to
> > >hook up
> > >the backup battery as Larry shows on his website or does that wafer 
> battery
> > >onboard work(with the foam underneath)? I still need to find where to 
> put the
> > >antenna . For someone in the central Calif area what part of the sky is
> > >applicable?
> > >Regards
> > >Barry
> > >
> > >
> > >__________________________________________________________
> >
> > Jim Hannon
> > http://soli.inav.net/~jmhannon/
> > 42,11.90N,91,39.26W
> > WB0TXL
> >
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Jim Hannon
http://soli.inav.net/~jmhannon/
42,11.90N,91,39.26W
WB0TXL

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