The station signed-on in 1976 with the call sign WACM. Originally licensed to Freeland, Pennsylvania, the station aired a syndicated Top 40/Soft Rock radio format with some local news. From the late 1980s and into the early 1990s, the station switched to an oldies music format and was branded as Oldies 103.[4]
The station's programming during this time period was simulcast on sister station WXPX (1300 AM). The simulcast relationship between the two stations continued to exist through 2023, even though both went through a number of call sign changes, format changes, ownership changes, and the 103.1 MHzFM allocation being moved to Avoca.[5] The stations, now WILK-FM and WODS, both simulcast the WILK NewsRadio network until WODS moved to a Spanish tropical format in 2023.
On February 23, 2022, WILK-FM added The Bet to its HD2 subchannel.[6]