16 May 1968: CRTC approves an application by CJOY Ltd. to operate a new FM station in Guelph. The initial studio and office address is 50 Wyndham Street.
1 July 1969: CJOY-FM begins its first broadcasts. It is authorised for 106.1 MHz frequency, 50 000 wattseffective radiated power and 75.9 metres (249 ft) antenna height.
26 July 1972: CJOY-FM and its associated AM station (CJOY) are authorised to relocate their common offices and studios to 75 Speedvale Avenue East and have remained there since.
1975: CJOY-FM calls sign changes to CKLA-FM.
1977: CJOY Ltd. assumes at least partial ownership of AM station CFTJ in Cambridge.
1980: CRTC approves relocation of both the CJOY AM and FM transmitters.
28 April 1987: Kawartha Broadcasting Co. Ltd. purchases CJOY Ltd. (CKLA-FM and CJOY), including the associated Galt Broadcasting company which operates the Cambridge station formerly known as CFTJ (whose call sign became CIAM in 1987).
1989: CKLA-FM's owners now known as Power Broadcasting.
10 July 1992: The station's call letters are now CIMJ-FM, but begins to identify itself as Magic 106.1. The station format changes from easy listening to adult contemporary, featuring music from the 1970s to the 1990s.
29 August 1996: CRTC renews CIMJ-FM licence until 2003[2]
2 June 1995: Station co-founder Wally Slatter dies.
February 1996: Station co-founder Fred Metcalf dies.
24 March 2000: CRTC approves sale of Power Broadcasting radio stations to Corus Radio, including CJOY-AM and CIMJ-FM[3]
13 April 2000: Corus purchase of Power Broadcasting radio properties is completed.
July 2003: The station shifted to its present hot adult contemporary format after CIZN dropped its format and changed frequencies.
September 2007: Major studio renovations begin.
August 2008: Studios are completed and are on an AES 44.1 digital network. Digital audio is stored and played back uncompressed.
Some of the assets listed above are majority-owned, wholly-owned, by Corus Entertainment, or are under license. Refer to full asset list for detailed information.