Wikipedia
WLUP-FM
WLUP-FM (97.9 FM, "The Loop") is a commercial classic rock radio station serving the Chicago metropolitan area. The station is owned by Merlin Media, LLC, and is operated by Cumulus Media. WLUP transmits its signal from an antenna located atop the John Hancock Center in Downtown Chicago at a height of with an effective radiated power of 4,000 watts, while their studios are located in the Merchandise Mart (which they shared with WKQX for fifteen years). WLUP can be heard as far away as Kalamazoo, Michigan, which is from Chicago.