The station began broadcasting as WBLZ in 1992, when the FCC granted a license to cover. It was operated from the same building as WPCO in Mount Vernon and broadcast from the same tower site. At various times the two stations have broadcast the same programming.
WBLZ was purchased from the Posey County Broadcasting Company by The Original Company in May 1999, and the call sign was changed to WYFX. The station picked up ABC Radio Networks ABC AC format later that year. Later, the simulcast with 1590 would return as WYFX began broadcasting ABC's Real Country format. This lasted until January 1, 2007, when the station picked up ESPN Radio after the all-sports format was dropped by WYNG.
WYFX began a local sports program featuring former WYNG personality Dan Egerski in December 2007.