It’s no secret that there aren’t too many English-language radio stations in Quebec, especially outside of the Montreal area. Of course, the CBC has a presence - if not at all local, all across the province... Outside of Montreal, there is a community radio station serving Lac Brome - CIDI 99.1 FM. They offer broadcasts in both official languages.
CJMQ 88.9 FM is Bishop’s University’s community radio station. They came on the air in 1995, and can be heard in Sherbrooke and the Eastern Townships.
CKTS 900 AM had been in Sherbrooke since the 1940s. They tried to appeal to more French listeners during the 1980s, but were told by the CRTC that they had to remain a 100% English station. They ended up simulcasting CJAD programming during the final years of their existence. The station was shut down by its new owners in 2006.
There is no doubt that the CRTC frowns at the idea of purely “bilingual” radio stations. That would probably be the only way any English radio could ever possibly be viable outside of Montreal nowadays.