On 7/6/21 5:26 PM, Bob kb8tq wrote:
Hi
The location comes out in Corsica. Running a fast simulation, he’s got a hole
from about 330 degrees over to 30 degrees AZ and from 0 to about 50 degrees
EL.
Bob
OK.. that makes sense
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
(all the way to the zenith).
Now, it's true that at 40N, there's not a lot of satellites to the
north, and they'll be high elevation, all above 50 degrees is reasonable.
On Jul 6, 2021, at 8:12 PM, Lux, Jim <j...@luxfamily.com> wrote:
On 7/6/21 5:06 PM, Bill Beam 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.
AZ in this case = Azimuth
OP is in Portugal, or at least his email is..
But, in fact, Portugal isn't that far north, I'd expect some sats to the north
(at high elevation)
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.
--
_______________________________________________
time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an
email to time-nuts-le...@lists.febo.com
To unsubscribe, go to and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an
email to time-nuts-le...@lists.febo.com
To unsubscribe, go to and follow the instructions there.
Bill Beam
NL7F
_______________________________________________
time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an
email to time-nuts-le...@lists.febo.com
To unsubscribe, go to and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an
email to time-nuts-le...@lists.febo.com
To unsubscribe, go to and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an
email to time-nuts-le...@lists.febo.com
To unsubscribe, go to and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an
email to time-nuts-le...@lists.febo.com
To unsubscribe, go to and follow the instructions there.
