The station was purchased from CHIQ, Ltd. in 1967 by (Ted) Rogers Broadcasting Ltd., which received approval from the CRTC to change the call letters to CHAM.
Some of the personalities who worked at CHAM during this time period included Paul Godfrey, Dick Joseph (who worked there twice - the second time under their next call letters), Gil Harris, Rockin' Ron Baptist, Ravin' Dave Mitchell, Don Collins, Bob Wood (later program/operations manager of WBEN-AM-FM in Buffalo), Ike Isaac, Ken Packham, Skip Dewling, Wayne Dion, J.J.Clarke, Don West, Len Robinson, Dave Fisher Ted Michaels, and newscaster Glen Darling.
In an unusual move, CHAM's broadcasting facilities were located inside a shopping mall called Terminal Towers, from which passers by could peer into the station's glass walls and watch the announcers work.
In 1976, CHAM was sold to Keith Dancy and the station adopted a "gold and great" format under the CJJD call sign.
Soon afterward, the station's facilities were moved out of Terminal Towers (and the public eye) and up a few blocks to Lloyd D. Jackson Square.
In 1981, Moffat Communications, Ltd. acquired CJJD and immediately upgraded the station's facilities, expanded its news staff, and included some talk programming in the lineup.
[6] Most recently, for the 2013-2014 hockey season, the station is airing Toronto Maple Leafs games in addition to their usual comedic fare.
[8] On November 16, 2023, the Canadian Radio-television and Telecommunications Commission announced that CHAM has been purchased from Bell Media by Neeti P. Ray, founder and CEO of the CINA Radio Group, which owns and operates numerous Canadian radio stations including CKFG-FM in Toronto, CINA in Mississauga, CKIN-FM in Montreal and CINA-FM in Windsor.
[10] In late August 2024, the station began stunting and rebranded itself as Big AM 820 CINA Radio Punjabi, playing contemporary South Asian music.