ABSTRACT
According to the FCC, an AM broadcast station is one licensed for transmission of radiotelephone emissions primarily intended for reception by the general public and operated on a channel in the band 535 kHz. Foryears, the AM broadcast band ended at 1605 kHz. Dominant stations provide primary and secondary service over relatively long distances. Most AM radio stations operate on regional and local channels. The FCC worked with the State Department to negotiate agreements with Canada and Mexico to allow many daytimers on foreign clears to extend their broadcast day. The FCC customarily refers to FM channels by channel number as in television. In 1983, the FCC opened the FM band to additional stations. Sound originates with the vibrating body of a sound source—the human vocal folds in the larynx or the strings of a harp.
