frequencies can enter the smallest hole in a building-----and if that building has a window, that window allows in frequencies.
A building with metal siding, metal roof and metal ceiling--does well, but with just 1 window---cell phones can get inside, radio can work.
A Protective home is simple---no radio or cell phone can function inside a real home.
MICRO WAVE WEAPONS? ---they always said you look for 3 cell phone towers in a triangle---xxx