Radio-Québec began broadcasting on its own in 1972 as a cable channel, which broadcast evenings on community channels in Montreal and Quebec City, then expanded in 1973 to Hull, Gatineau and Sherbrooke. As a cable network, Radio-Québec was generally on the air weeknights from 8 pm to 10 pm. The network of over-the-air transmitters was launched on January 19, 1975 with the sign-ons of CIVM-TV in Montreal and CIVQ-TV in Quebec City, making its programming available to an even wider audience. In its early days after the terrestrial network began, Radio-Québec would provide week-delay videotapes of its programming line-up to cable systems in communities not served by a Radio-Québec station. Some Radio-Québec programs were also seen on most Radio-Canada stations, not only in Quebec, but throughout Canada as well; this arrangement continued into the 1980s.