WWDK ("94.1 Duke FM"') is a radio station broadcasting a classic country format. Licensed to Jackson, Michigan, it first began broadcasting on July 14, 1958 as WMKZ-FM simulcasting WIBM-AM. The station broadcasts from a tower near Springport, Michigan. The station can be heard from Kalamazoo to Ypsilanti, and from Alma, Michigan to Angola, Indiana.