Quick Facts. WKNO 91.1 (Memphis), our flagship station, signed on-air April 1, 1972 as the first public radio station in the Memphis area. Originally broadcasting at 40,000 watts, 91.1 FM currently broadcasts a mix of news, entertainment, and classical music at 100,000 watts. WKNP 90.1 (Jackson) first went on-air in 1990 to serve the Madison ...