[time-nuts] Re: GPS Elevation Mask Values.

[Dana Whitlow]

I own at least two Garmin handhelds that park out-of-service sat symbols
 at due north on the horizon.  But they don't do anything like that finger.

Dana


On Wed, Nov 10, 2021 at 9:30 AM Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> Your GPS antenna does not have a clue where signals are coming from. The
> only
> way things get plotted is based on the almanac data. If it sees sat Id 21,
> it looks in
> the almanac for id 21. If the almanac says it’s over India, that’s where
> it goes on the
> resulting plot.
>
> Best guess: you are seeing intermod of some sort that your receiver
> interprets as a
> signal from a sat that can’t actually be in view.
>
> Bob
>
> > On Nov 10, 2021, at 9:54 AM, Dan Kemppainen <dan at irtelemetrics.com>
> wrote:
> >
> > Hi,
> >
> > So, that finger of signal appearing above the north pole shows up even
> after the GPS survey is done. Any ideas on how to figure out what's causing
> that?
> >
> > My first thought is to try look at it with a different model of GPS unit.
> >
> > Is it possible it could be a signal reflection in the cable or something
> weird going on in the feed???
> >
> > Another thought would be to log the GPS data, to sort out which birds
> the GPS thinks is up there. Comparing to where they actually are would help
> sort out what the signal might be bouncing off of.
> >
> > Dan
> >
> >
> > On 11/9/2021 3:30 AM, time-nuts-request at lists.febo.com wrote:
> >> Message: 1
> >> Date: Mon, 08 Nov 2021 16:36:49 -0800
> >> From: Hal Murray <halmurray+timenuts at sonic.net>
> >> What's the blue finger sticking out into the North Pole hole?
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