In 1953, the station's founder, J.O. Masse, submitted his initial application, for a 250 watt French-language AM station on 1450 kHz in Chicoutimi. However, the application was rejected by the Canadian Broadcasting Corporation, which at the time regulated all broadcasting in Canada. Later that year, Masse, along with his partners G. Demers and L. Lagace, each submitted its own application for a new station, each having suggested their own frequency. However, the CBC rejected all applications, but at a later meeting, the CBC granted Masse a license for the submitted parameters, while rejected applications from the other parties.
The station signed on as CJMT on February 28, 1954, carrying no network programming.
In 1958, CJMT relocated its frequency from 1450 kHz to 1420 kHz and increased power from 250 watts to 1,000 watts, using a single directional antenna pattern for day and night operation.
On August 23, 1994, CJMT had its licence renewed from September 1, 1994 to August 31, 1996.
On September 30, 1994, Telemedia and Radiomutuel merged their AM operations because they could no longer afford to compete with each other. As a result, they closed CJMT, along with CJMS Montreal, CJRP Quebec City, CJRS Sherbrooke, CJTR Trois-Rivieres and CKCH Hull. All six stations left the air on this date and the licenses were turned in to the CRTC, which revoked the licences on November 2, 1994.
- Decision CRTC 84-46, CRTC, January 27, 1984
- Decision CRTC 85-793, CRTC, September 17, 1985
- Decision CRTC 86-1042, CRTC, October 24, 1986
- Decision CRTC 88-9, CRTC, January 8, 1988
- Decision CRTC 89-676, CRTC, September 7, 1989
- Decision CRTC 92-607, CRTC, August 21, 1992
- Decision CRTC 94-668, Licence renewal for CJMT, CRTC, August 23, 1994
- Decision CRTC 94-846, Revocation of CJMT Chicoutimi, Quebec, November 2, 1994