The National Radio Astronomy Observatory in Appalachia. (CBS)
Cell signals are virtually nonexistent at my house. During the summer I row out to the middle of the lake if I need to use my cell. During the winter I sit out there in a lawn chair.
Apparently these people have not heard of the ionosphere with it's D,E, F1, and F2 layers that support very long haul refract/bounce transmission, or the troposphere, or of GPS, satellite downlinks, DBS, airborne Radar, ground radar, TV transmissions, etc. There is nowhere on this earth that is 'radio quiet'....