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

[Lux, Jim]

On 11/10/21 7:29 AM, Bob kb8tq 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.
>

I don't know that an intermod would do that (PN sequences are different) 
- multipath, for sure.