The station first signed on the air on September 16, 1966, as WSLI-FM. The station changed its call letters to WJFR in 1976, with a talk radio format. For a short time from 1982 until 1983, the station became WXLY-FM, running a country format. Retaining the format, the station changed its call letters to WYYN during the year. Its format lasted until 1987 when it dropped country for adult contemporary as "Class-FM". The station also began simulcasting WSLI. In 1990, its call letters changed to WJDX retaining the AC format, and for a short time in 1998, its call letters changed to WKXS. After 12 years in 1999, it permanently returned to a country format, switching their calls to WUSJ on July 13, 1999.