WFPS is a FM radio station in Freeport, Illinois, operating on an assigned frequency of 92.1 megahertz as authorized by the Federal Communications Commission.WFPS signed on the air on November 1, 1970 under the caller letters of WACI with an effective radiated power of 3,000 watts. The station was started by Ruth and F.X. Mahoney. The studios were in a double wide trailer custom designed for a radio station located on highway 20, five miles west of Freeport, IL.