It started operations in 1977 as a sister station to CKAC 730 (now owned by Corus Entertainment since early 2005) and identified itself, until 1990, as "Radio-Cité". Unlike most other FM stations in Montreal which were created as a sister station to an existing AM station, it never shared the call sign of its AM sister (i.e. it was never known as "CKAC-FM").
While the station was originally planned to be on 93.5 MHz, then-owner Telemedia was forced by the Canadian Radio-television and Telecommunications Commission (CRTC) to use 107.3 MHz instead, as the Canadian Broadcasting Corporation had targeted 93.5 MHz as a reserved frequency and rushed to move CBM-FM from 95.1 to 93.5 MHz in 1976.
Pro-Cite in a Special Library; the Ability to Handle Diverse Sources Makes Pro-Cite Suited to Bibliographic Information Management
Nov 01, 1990; 4 [FIGURES HAVE BEEN OMITTED] The ability to handle diverse sources makes Pro-cite suited to bibliographic information...