There used to be a spot out in West Texas where there was NO radio signal available...from anywhere.
As I recall, it was around Van Horn.
That your part of West Texas?
No, Midland.
Van Horn is home to a huge private spaceport now. Google and Virgin Airlines money. Aim to go orbital.
I believe that is still true. And there's that part of NE Arizona on I-40 where the only station you can get broadcasts in Navajo.