"Are there any places where you actually can get so far out that you can't get 911 anymore?"

Absolutely! While the eastern U.S. doesn't have many points over 3,500 ft, the terrain out here varies between 282 ft below sea level to over 20,000 ft, with nearly endless variations in between. If there is a hill or outcrop or mountain between your cell phone and the nearest tower, you are SOL for 911 or anything else. We have wilderness areas that measure in the millions of acres. You just don't have to go very far to find yourself out of cell phone range.

Anyway, I posted the original article because many people think their cell phone, GPS and PLBs will solve all their wilderness problems, and they won't.

Sue