Wikipedia
WGPA
WGPA (1100 kHz) is a Class D daytimer radio station, licensed to Bethlehem, Pennsylvania, and serving the Lehigh Valley. It is owned by Ronald and Christopher Crumbliss, through licensee CC Broadcasting, LLC (Kutztown). It airs a radio format that the owners describe as "Ameripolitan," consisting of classic country music, rockabilly, oldies and polka music.
Because AM 1100 is a clear channel frequency, WGPA must sign off at night to protect WTAM in Cleveland, the Class A station on 1100 kHz. (Radio waves travel farther at night.) WGPA's studios and offices are on East Broad Street and its transmitter is off Win Drive, in Bethlehem.