WFXF (103.9 FM, "The Fox") is a radio station licensed to Dundee, Illinois. Its transmitter is located in Gilberts, Illinois and its studios are located in Crystal Lake, Illinois. The station serves the northwestern suburbs of Chicago. Its format consists of classic rock, from the 1960s, 1970s, 1980s, and 1990's.
The station is an affiliate of the syndicated Floydian Slip Pink Floyd show.