KMXG is owned by iHeartMedia, Inc., with studios and offices in Davenport, Iowa, along with co-owned KUUL-FM, WLLR-FM, KCQQ-FM, WFXN and WOC.

The station has an effective radiated power (ERP) of 100,000 watts, and their transmitter is located off 225th Street in rural LeClaire in Scott County.

During its run as KROS-FM, the station simulcast the AM signal initially, and later aired a beautiful music format, with quarter hour sweeps of instrumental cover versions of popular songs.

Syndicated programming added included Backtrax USA (both the 1980s and 1990s versions), Retro Pop Reunion and American Top 40: The 80s.

With the demise of KUUL-FM's oldies format in 2012, several of KUUL's former programs were added to KMXG's weekend lineup, including American Top 40: The 70s, Into the 70s with John Landecker and The 70s with Steve Goddard.