The station airs a hot adult contemporary format branded as 104.5 Fresh Radio.

The station was launched in 1957 by the city's daily newspaper, the Cornwall Standard Freeholder, with the call sign CKSF-FM.

Two years later, the stations were acquired by Stanley Shankman, the owner of CJSS-TV, and both changed their callsigns to CJSS as well.

CFLG originally aired a beautiful music format which has since been updated to the current AC sound.

In late 2021, competing station WYUL, which primarily targets the Cornwall and Greater Montreal areas from across the American border, was sold to Educational Media Foundation and switched from its longtime CHR/Top 40 format.