CKDK, branded as 103.9 The Hawk, is a radio station owned by Corus Entertainment and based in Woodstock, Ontario, Canada that transmits at 50,000 watts at 103.9 MHz on the FM dial. Until August 2008, the station primarily played classic rock; it has since evolved to a 1960s-1980s oldies/classic hits playlist.
The station primarily plays classic rock music. Although based in Woodstock, the station primarily targets the larger London, Ontario market. This station can be heard from London and Strathroy in the west, to Georgetown in the east, covering much of Western Ontario, broadcasting to a potential audience of around 1.5 million people. Under the right conditions, CKDK programming can also be heard in parts of metropolitan Detroit.
Popular shows under the former classic rock format included the McArthur in the Morning , Little Steven’s Underground Garage and The Legends of Classic Rock. The station's slogan is "Playing the Greatest Rock and Roll of All Time, 103.9 The Hawk". The Legends of Classic Rock is syndicated from Q107 in Toronto, and is heard on all Corus-owned classic rock stations.