WMLM began broadcasting in 1977 as a daytime-only station and added nighttime operations in 1982.

[3] The station originally broadcast from downtown St. Louis[3] on 1540 kHz,[citation needed] moving south of the city in 1983 to a location on State Road.

[3] Original owner Greg Siefker sold WMLM to Krol Communications, owners of WJSZ in Ashley, Michigan, in May 2008 after the Federal Communications Commission (FCC) gave approval in March.

[3][1] Speaking to the Mount Pleasant Morning Sun, Siefker cited exhaustion and recent health issues as a reason for selling his station, although he was to stay on as a consultant.

Former hosts included Dan Manley, Justin Orminski, Tyler Scott, Tallon Weatherby, Isaac McCormack, and Josh Lattime.