The station has a contemporary hit radioformat and is part of the NRJ network which operates across Quebec. It started operations as a sister station to CKRS 98.3 (now owned by Cogeco-affiliated Radio Saguenay since September 2010).
The station has a contemporary hit radioformat and is part, since the early 1990s, of the Énergie network which operates across Quebec. CJAB-FM started operations on May 10, 1979. The station was bought by Radiomutuel in 1992 (predecessor of Astral Media), along with then-sister station CKRS 98.3 (now owned by Cogeco-affiliated Radio Saguenay).