ckdk-fm is a radio station owned by corus entertainment and licensed to the city of woodstock, ontario, canada, serving the london, ontario market and transmitting at 51,000 watts at 103.9 mhz on the fm dial, covering most of southwestern ontario. the station airs a country music format branded as country 104. the studio is located on dundas street in woodstock but it has an office in downtown london and its transmitter is located near karn road in woodstock. until august 2008, the station primarily played classic rock; it afterward evolved to a 1960s–1980s oldies/classic hits playlist, but eventually settled into an adult hits format under the branding more 103.9. the format change to country music took place on february 28, 2014. thé station currently plays mostly new country, but also plays classic country songs from earlier decades, especially the 80s and 90s.