 The station moved to 1550 kHz, with an increase of daytime power to 5,000 watts/500 night, on November 4, 1952.From 1958 to 1989, this station used the call letters WAAY as the Top 40-formatted AM sister station of WAAY-TV.The station went to 50,000 watts-daytime power in 1980 (the maximum output permitted for U.S. AM radio stations) and then operated from a separate daytime and nighttime site until 1991.