Wikipedia
CHUM-FM is a Canadian radio station licensed to Toronto, Ontario and operated by Bell Media. It broadcasts at 104.5 MHz with a hot adult contemporary format. CHUM's studios are located at 250 Richmond Street West in the Entertainment District, while its transmitter is located atop the CN Tower. The station also broadcasts nationwide on Shaw Direct channel 872, Bell TV channel 990, Bell Fibe TV channel 978, and locally on Rogers Cable channel 925.
CHUM-FM is consistently one of Toronto's most popular stations according to Numeris' radio ratings, and is currently the fourth most listened-to station in the market after Rogers Media-owned Adult Contemporary station CHFI, CBC Radio One's CBLA, and Newcap Radio-owned Classic Hits station CHBM.