GPS & Satellite Radio Coveerage

Because your GPS works off multiple satellites that are always moving, GPS reception in the northern latitudes is just about as good as in the south. Of course you can get into steep canyons where your view of the sky is limited, and you may lose GPS for a period until another satellite comes into view. Not the same on satellite radio. These networks use stationary satellites located over the equator, and if you can't see it---no reception. With the way the mountain ranges run along the Alaska highway, you'll find reception north of Whitehorse is spotty to non-existent. We have gotten signals as far north as Haines Junction and occasional patches north of there. Once in AK, you'll find the satellite is so low on the horizon that any hills will hide it. We're talking 10-15 degrees over the horizon, but that's just the geography.