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 1,394 feet (425 m) with an effective radiated power of 4,000 watts, 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 90 miles (140 km) from Chicago.

HD Programming

WLUP also airs HD Radio programming on two subchannels: 97.9-HD2 airs a comedy format ("Loop Laffs"), while 97.9-HD3 airs a locally produced Smooth Jazz/Soft AC hybrid format.

History of 97.9 FM prior to WLUP