Fire threatens Mt. Wilson broadcast transmitters as L.A. TV, radio stations remain on alert; Observatory evacuated ...

Basically, they turn on and off an absorbing antenna at a frequency that ... channel into a mono FM station. Since FM radio is broadcast as a mono signal, with a left-minus-right signal sent ...

One of the most powerful FM signals in the nation, 106.9 WMIT(FM), "The Light FM," played a critical role during Hurricane ...

Towers for all the major TV stations are located on the mountain, as are transmitters for many FM radio stations.