The station has a modern rockformat and is the flagship of the Énergie network, which operates across Quebec. It offers an eclectic yet progressive mix of personality-driven DJs and current francophone and anglophonepop music.
Early station years (1964–1970)
Originally known as CJMS-FM, the station started operations on May 11, 1964, as a sister station to the now-defunct CJMS 1280. Upon its opening, CJMS-FM was owned by the Radiomutuel Group. The station originally had a classical music format; that format was abandoned in 1970 and the call sign was changed at that time to CKMF-FM.
Early CKMF years (1970–1994)
The station moved in 1972 from its original facility at the corner of Berri Street and Ontario Street East to relocate to the corner of Roy Street East and Hotel de Ville Avenue in the Plateau.