[time-nuts] Newby with questions

[Mark Spencer]

Just as an FYI,  I live slightly to the north of the 49th parallel and my 
antenna can see GPS satellites down to a few degrees of the Horizon.
On a more practical note, I've seen numerous GPS antennas mounted on south 
facing walls (with little or no view to the north) in various commercial 
settings.   My thunderbolt also seems to work best when I mask out satellites 
below 30 degrees or so.

----- Original Message ----
From: Chris Albertson <albertson.chris at gmail.com>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Cc: David VanHorn <D.VanHorn at elec-solutions.com>
Sent: Mon, February 28, 2011 9:07:35 AM
Subject: Re: [time-nuts] Newby with questions

On Mon, Feb 28, 2011 at 8:37 AM, David VanHorn
<D.VanHorn at elec-solutions.com> wrote:

> I've done the 48 hour survey, but my signal plot shows a big circular shaped 
>mouse bite on the north side. I'm showing no signal up through 70 degrees at 
>north, 30 degrees from NE around to NW.   How badly will this impact me?

The 24 GPS satellites are in orbits that never pass over the  poles.
I think they are about 60 degree inclinations.  By your description
you must be in the northern hemisphere.  If you can,  set up your
antenna so it can see to the south and don't worry if the view of the
north is blocked because as you found there is nothing to see there.
-- 
=====
Chris Albertson
Redondo Beach, California

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