On Mon, Sep 12, 2011 at 11:13 AM, David J Taylor <[email protected]> wrote: >> South? Are you sure? GPS SVs aren't TV broadcast satellites... > > Particularly if you are at a more northerly latitude, if you need to choose > one aspect or the other, the southern aspect may provide better coverage.
I assumed the OP lived in the Northern Hemisphere and above about 30 degrees latitude. If I assumed correctly South is the direction to face. The GPS sats are in a (from memory) 60 degree inclined orbit so the North sky is not as well covered. The higher North you are the more you want to face south. If you are above 60 degrees no sats will be north of you. Even in the Southern USA you find there are no sats that go to near the north horizon but to the South they remain visible until blocked by the horizon. A mirror image of this applies in the So. Hemisphere. Maybe a better way to visualize this is to think that the Earth is covered with a huge shell from 60 deg. S. to 60 deg. N. with large "holes" over both poles. Given a choice of only one place to look don't aim the antenna at a hole. Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
