High Quality Content by WIKIPEDIA articles! WNIB, 97.1 FM (also known as Classical 97), was a classical music radio station that was begun in Chicago, Illinois on July 9, 1955. The frequency was assigned to William C. Florian who began operations and retained ownership until its sale in 2001. The call letters stood for Northern Illinois Broadcasting (Company). Despite many overtures throughout the years to purchase the license, Florian held onto it until February 11, 2001, when it was sold to Bonneville Broadcasting. See WDRV for details of broadcasting on the frequency after that date.