The studios are in the Bell Media Building at 1717 René Lévesque Boulevard East in Downtown Montreal.

It has an effective radiated power (ERP) of 41,200 watts using a non-directional antenna atop Mount Royal.

The first song played by Doug Pringle after the format switch was Richard Strauss' "Also sprach Zarathustra", followed by The Beatles' "Here Comes the Sun".

[1] Management wanted to give the FM station its own identity, separate from the Top 40 format found on CKGM.

Furthermore, CHOM's original format of AOR and "underground" rock tunes changed to include the playing of the top tracks from the biggest selling albums.

CHOM-FM became increasingly popular, and in 1979 surpassed its sister station CKGM in Bureau of Broadcast Measurement (BBM) ratings.

Stern was a hit in several U.S. radio markets and wanted to try his hand in Canada's top two cities, in Toronto at CILQ-FM and in Montreal at CHOM.

Effective in January 2002, the station was sold to Standard Broadcasting, which already owned CJAD and CJFM-FM in Montreal.

On June 22, 2011, Astral Media announced that popular disc jockey Terry DiMonte would be making a return to the station.

[4] With the merger, CHOM was reunited with its original AM sister station CKGM, which CTVglobemedia (now Bell Media) acquired from CHUM in 2007.

On September 22, 2017, longtime radio personality Robert "TooTall" Wagenaar retired from his midday show after over 40 years at CHOM.