On 7/6/21 5:14 PM, Bob kb8tq wrote:
Hi
The observer (at 41 deg 21 min N) is *north* of where I live. I most certainly
am located in an
area that has a “blank” over the north pole.
Bob
GPS orbit inclination is 55 degrees. If you plot the ground track, it
just touches 55N and 55S (i.e. there are times during the orbit when the
satellite is directly overhead the latitude = inclination), so you'd
have to be north (or south) of 55, to have an actual hole to the north.
Now, it's true that at 40N, there's not a lot of satellites to the
north, and they'll be high elevation.
On Jul 6, 2021, at 8:06 PM, Bill Beam <wb...@gci.net> wrote:
Bob,
This is not an issue for an observer in AZ.
GPS birds have orbit inclination 55-60deg and should be seen anywhere in the
sky from AZ.
AZ observer just needs to wait long enough for one to pass to the north.
On Tue, 6 Jul 2021 18:55:22 -0400, Bob kb8tq wrote:
Hi
There are no GPS sats flying over the north or south poles.
Bob
On Jul 6, 2021, at 6:13 PM, Admin <asma...@fc.up.pt> wrote:
Testing two different Z3801A, I wonder why I cannot receive GPS birds outside
AZ : 290 to 315 deg. My horizon is clear and EL and
AMU filters are 10 deg and 1.0, respectively. Position: 41 21 N ; 08 23 W.
Your info will be very much appreciated.
--
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