[time-nuts] Re: LH "No usable sats"
> FWIW I seem to recall that TWO shortcuts appear on the desktop > after installing LH. One goes to a GPS unit in Seattle that you are > accessing online. The other is YOUR local unit. > > Gordon WA4FJC Correct. If you log on to the test server and force it to accept your specified latitude/longitude, it will generally not be able to see any satellites. If you press !H it will do a factory reset, restart the self-survey, and eventually resume normal operation... but it still won't match your location in Portugal. :) You will have to launch it from the other icon to use your local GPS receiver. It may be necessary to change the Windows shortcut to specify the right COM port. -- john, KE5FX ___ 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] Re: LH "No usable sats"
Greetings, FWIW I seem to recall that TWO shortcuts appear on the desktop after installing LH. One goes to a GPS unit in Seattle that you are accessing online. The other is YOUR local unit. Gordon WA4FJC -Original Message- From: Chris Caudle <6807.ch...@pop.powweb.com> Sent: Thursday, July 08, 2021 9:10 AM To: time-nuts@lists.febo.com Subject: [time-nuts] Re: LH "No usable sats" On Thu, July 8, 2021 4:30 am, Admin wrote: > Now, I recognize my mistake. I shouldn't invoke LH Lady Heather is a very full featured GPSDO management program. Using that for setting up your GPSDO is rarely a mistake, although it has so many features it is sometimes difficult to find what you need. > It is not enough to change the TZ and location, as I did. How did you change the location? Did you run the self-survey? > seems to me that the signal strenght algoritm continues referencing to > Seattle. That makes no sense. Signal strength has no location reference, it is just a value returned directly from the GPS receiver that is displayed and reported by LH. There is no algorithm involved. -- Chris Caudle ___ 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] Re: LH "No usable sats"
Yes, John. The display that I get with the Sims's configuration is so pleasant that I want to use it. But that configuration is hidden behind the TCP/IP address. I did make my own configuration but the final aspect is poor. (AAMOF, I am lazzy; or I've more interesting things to do?). Greetings from Portugal. Antonio (CT1TE) A 2021-07-08 16:00, John Ackermann N8UR escreveu: IIRC Lady Heather comes with a TCP/IP example configuration that connects to a couple of remote Thunderbolts, one of which is in Seattle. Are you sure that's not what you're seeing? John On 7/8/21 10:00 AM, Admin wrote: Chris, Thanks for your comments. However, how do you explain that having changed the longitude (ONLY) from my position to the Seattle longitude, many satellites are now received several AMU beyond 1.0? A 2021-07-08 14:10, Chris Caudle escreveu: On Thu, July 8, 2021 4:30 am, Admin wrote: Now, I recognize my mistake. I shouldn't invoke LH Lady Heather is a very full featured GPSDO management program. Using that for setting up your GPSDO is rarely a mistake, although it has so many features it is sometimes difficult to find what you need. It is not enough to change the TZ and location, as I did. How did you change the location? Did you run the self-survey? seems to me that the signal strenght algoritm continues referencing to Seattle. That makes no sense. Signal strength has no location reference, it is just a value returned directly from the GPS receiver that is displayed and reported by LH. There is no algorithm involved. ___ 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] Re: LH "No usable sats"
Hi The normal approach to running any GPS module is to initially let it determine what it’s location is. This process is called self survey. Many modules will let you save that location in the module. If you give a module a location that is wildly inaccurate and lock in that location, the outcome will be a mess. What sort of mess depends a lot on the module involved. Note that none of this is related to LH, it’s all going on in the GPS device that LH is connected to. Bob > On Jul 8, 2021, at 10:00 AM, Admin wrote: > > Chris, > > Thanks for your comments. > > However, how do you explain that having changed the longitude (ONLY) from my > position to the Seattle longitude, many satellites are now received several > AMU beyond 1.0? > > A 2021-07-08 14:10, Chris Caudle escreveu: > >> On Thu, July 8, 2021 4:30 am, Admin wrote: >>> Now, I recognize my mistake. I shouldn't invoke LH >> Lady Heather is a very full featured GPSDO management program. Using that >> for setting up your GPSDO is rarely a mistake, although it has so many >> features it is sometimes difficult to find what you need. >>> It is not enough to change the TZ and location, as I did. >> How did you change the location? Did you run the self-survey? >>> seems to me that the signal strenght algoritm continues referencing to >>> Seattle. >> That makes no sense. Signal strength has no location reference, it is >> just a value returned directly from the GPS receiver that is displayed and >> reported by LH. There is no algorithm involved. > ___ > 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] Re: LH "No usable sats"
I believe that your problem still remains somewhat unsolved, as you should be getting good coverage over most of the compass except for the northern "doughnut hole". Instead, you're apparently getting coverage only to the W through NW. BTW, when using a T'Bolt I have my AMU thresholds set at 3.0. This works well most of the time, although in some cases the unit takes an hour or more to get going after turn-on. I have the local coordinates stored in memory via "Tboltmon.exe", and the unit set to start up in "overdetermined clock" mode. I'm using an indoor antenna on the SE side of the house. My latitude is just over 30 deg N. I'm definitely not particularly pleased about that startup delay issue. I have two fairly inexpensive Garmin receivers, one a handheld, the other an automotive unit, and both reliably start within a minute or two after a full cold start turn-on, while indoors. Too bad neither has an overdetermined clock/precison timing/0D mode. Dana On Thu, Jul 8, 2021 at 4:31 AM Admin wrote: > Thanks to all takers. > > Now, I recognize my mistake. I shouldn't invoke LH by the Sims's > executable. It is not enough to change the TZ and location, as I did. It > seems to me that the signal strenght algoritm continues referencing to > Seattle. Thus, most of the birds flying outside (270 to 315 deg.) are > received below 1 AMU (27 dBc) at my location, and thereupon filtered. > > I sincerely apologize for my silly mistake. > > Regards, > > Antonio/CT1TE > > -- > ___ > 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] Re: LH "No usable sats"
On Thu, July 8, 2021 9:00 am, Admin wrote: > However, how do you explain that having changed the longitude (ONLY) > from my position to the Seattle longitude, many satellites are now > received several AMU beyond 1.0? Not enough information to say. How do you start LH? What command line options? Many people on the list use Lady Heather, a screen capture of the output you are seeing may have enough information for someone to help diagnose. -- Chris Caudle ___ 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] Re: LH "No usable sats"
IIRC Lady Heather comes with a TCP/IP example configuration that connects to a couple of remote Thunderbolts, one of which is in Seattle. Are you sure that's not what you're seeing? John On 7/8/21 10:00 AM, Admin wrote: Chris, Thanks for your comments. However, how do you explain that having changed the longitude (ONLY) from my position to the Seattle longitude, many satellites are now received several AMU beyond 1.0? A 2021-07-08 14:10, Chris Caudle escreveu: On Thu, July 8, 2021 4:30 am, Admin wrote: Now, I recognize my mistake. I shouldn't invoke LH Lady Heather is a very full featured GPSDO management program. Using that for setting up your GPSDO is rarely a mistake, although it has so many features it is sometimes difficult to find what you need. It is not enough to change the TZ and location, as I did. How did you change the location? Did you run the self-survey? seems to me that the signal strenght algoritm continues referencing to Seattle. That makes no sense. Signal strength has no location reference, it is just a value returned directly from the GPS receiver that is displayed and reported by LH. There is no algorithm involved. ___ 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] Re: LH "No usable sats"
Chris, Thanks for your comments. However, how do you explain that having changed the longitude (ONLY) from my position to the Seattle longitude, many satellites are now received several AMU beyond 1.0? A 2021-07-08 14:10, Chris Caudle escreveu: On Thu, July 8, 2021 4:30 am, Admin wrote: Now, I recognize my mistake. I shouldn't invoke LH Lady Heather is a very full featured GPSDO management program. Using that for setting up your GPSDO is rarely a mistake, although it has so many features it is sometimes difficult to find what you need. It is not enough to change the TZ and location, as I did. How did you change the location? Did you run the self-survey? seems to me that the signal strenght algoritm continues referencing to Seattle. That makes no sense. Signal strength has no location reference, it is just a value returned directly from the GPS receiver that is displayed and reported by LH. There is no algorithm involved. ___ 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] Re: LH "No usable sats"
On Thu, July 8, 2021 4:30 am, Admin wrote: > Now, I recognize my mistake. I shouldn't invoke LH Lady Heather is a very full featured GPSDO management program. Using that for setting up your GPSDO is rarely a mistake, although it has so many features it is sometimes difficult to find what you need. > It is not enough to change the TZ and location, as I did. How did you change the location? Did you run the self-survey? > seems to me that the signal strenght algoritm continues referencing to > Seattle. That makes no sense. Signal strength has no location reference, it is just a value returned directly from the GPS receiver that is displayed and reported by LH. There is no algorithm involved. -- Chris Caudle ___ 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] Re: LH "No usable sats"
Thanks to all takers. Now, I recognize my mistake. I shouldn't invoke LH by the Sims's executable. It is not enough to change the TZ and location, as I did. It seems to me that the signal strenght algoritm continues referencing to Seattle. Thus, most of the birds flying outside (270 to 315 deg.) are received below 1 AMU (27 dBc) at my location, and thereupon filtered. I sincerely apologize for my silly mistake. Regards, Antonio/CT1TE -- ___ 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] Re: LH "No usable sats"
On 7/7/21 7:13 AM, Poul-Henning Kamp wrote: Lux, Jim writes: 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. I live at 55N and I very much have a "hole to the north": http://phk.freebsd.dk/raga/sneak/fig1.png That also means I live in one of the two circles where the lattiude DOP is worst on the entire planet :-/ North of this circle, one can pick up sats on the far side of the hole. South of it, the hole occupies a smaller angle of azimuth. That's an interesting plot. Recently, I've been looking at orbits that get lots of looks of a particular place (volcanoes, as it happens) with very low perigee (<150km) so they don't last long (a few months). What you want is an inclination that is close to the latitude, and given the way launches work, if you could happen to launch from a latitude that is slightly more equatorial, that seems to be best. ___ 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] Re: LH "No usable sats"
Lux, Jim writes: > 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. I live at 55N and I very much have a "hole to the north": http://phk.freebsd.dk/raga/sneak/fig1.png That also means I live in one of the two circles where the lattiude DOP is worst on the entire planet :-/ North of this circle, one can pick up sats on the far side of the hole. South of it, the hole occupies a smaller angle of azimuth. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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] Re: LH "No usable sats"
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 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 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.
[time-nuts] Re: LH "No usable sats"
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 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 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] Re: LH "No usable sats"
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 > On Jul 6, 2021, at 8:12 PM, Lux, Jim 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 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] Re: LH "No usable sats"
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 > On Jul 6, 2021, at 8:06 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. > > 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 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] Re: LH "No usable sats"
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 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] Re: LH "No usable sats"
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 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] Re: LH "No usable sats"
Hi There are no GPS sats flying over the north or south poles. Bob > On Jul 6, 2021, at 6:13 PM, Admin 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.
