WDKF (99.7 FM) is a radio station licensed to Sturgeon Bay, Wisconsin, USA, the station serves the Green Bay area simulcasting co-owned WGEE with a classic country format as Duke FM. The station is currently owned by Midwest Communications, broadcasting from both its main transmitter in Kewaunee County, Wisconsin.
The station that would become WZDR launched in the early 1980s at 100.1 FM (eventually moving to 99.7 by 1986). Compared to its simulcast partner in the Fox Valley, WZDR's format history has been mostly unstable. The station started out in the early 80s under the WSBW call sign (not to be confused with the current WSBW in Sister Bay, Wisconsin) and aired a locally originated adult contemporary format through studios in downtown Sturgeon Bay. An ownership change in 1989 would see WSBW become WQZZ, with the station now using a satellite-fed AC format, the same service used by its sister station in the Fox Cities, the similarly-callsigned but separately-operated WOZZ. In the fall of 1990, WQZZ became WHET-FM and adopted a new satellite-fed top 40 (CHR) format as "99.7 The Heat" to compete with Top 40 station WIXX; the station would go to an all-local Top 40 operation 2 years later.