For good reception, a radio must have good selectivity (selectivity is a radio's ability to separate weak stations and strong stations on the FM dial) and good sensitivity (the ability to receive weak ...

I need help with my stereo receiver’s FM reception. I listen primarily to WQED in Pittsburgh, approximately 35 miles away, but the direct line of sight to the transmitting tower is blocked by a hill.

Seattle is tough on FM radio signals. With hills, valleys, buildings and tunnels, getting good reception can be a challenge for listeners. Local radio stations try to deal with the challenges by ...