In 1976, then-owner Radio-Nord Communications was granted a license from the CRTC, in which the station would operate as Radio-Canada's private affiliate of what was then called "Première Chaîne"; also included was a rebroadcaster, CHLM-FM-1 at Lithium Mines, serving nearby Val-d'Or, operating on 97.3 MHz with effective radiated power of 52,000 watts.

CHLM-FM and CHLM-FM-1 signed on the air by 1980; eventually, CHLM-FM-1's city of license would have changed to Amos, and broadcasting on another different frequency, 91.5 MHz.

[3] The station's local programs are Des matins en or, and Région Zéro 8 in the afternoons.

The Saturday morning program, Samedi et rien d'autre, originates from CBF-FM Montreal.

[4] On July 29, 2010, the CRTC approved the application to transfer transmitters CBF-1, CBF-3 and CBF-4 from CBF-FM Montreal to CHLM-FM.