What are the limitations of the radio signal?
A pager is simply an FM radio and has the same limitations and problems as any FM radio. Surely, you have noticed when driving in your car that sometimes the radio signal fades in and out as you go through a mountainous area, a tunnel or sometimes even a freeway underpass. Pagers have this same limitation. They do not always receive the signal in the coverage area. The paging signal is cut in half for every floor or exterior wall it is trying to penetrate. Although the paging systems do have several towers in each area, due to geographical conditions, there are some weak spots.
