KNHS, was an FCC licensed FM radio station at 89.7 MHz from 1955 to 1991, with a variety music radio format broadcasting diverse recordings chosen by North High School's student disc jockeys. In the latter years it was usually an eclectic mix of classic rock, heavy metal, and rap. Its nickname was "The Rock of the Block". A person that had worked in the FCC's Washington headquarters at the time said "The Federal Communications Commission does not keep an official count of high school stations, but it is the first high school station she ever had encountered."