The station was launched in 1977 by Blackburn Radio, the owner of the city's existing CKNX 920 AM and former owner of CKNX-TV, which is now owned by Bell Media. Blackburn subsequently launched another FM station in Wingham, CIBU, in 2005.
The station also has a low-power rebroadcast transmitter in Centreville, on 104.9 FM to serve Centreville and Meaford. On August 28, 2008, Blackburn Radio applied to the CRTC to change the Centreville/Meaford frequency from 104.9 to 102.7MHz and to increase power from 50 to 250 watts which was denied on December 2 later that same year.