Originally, CKOC's station was based in the Lower City at the corner of King William and John Streets, and was an offshoot of the Wentworth Radio and Supply Company. In the spring of 1922, the station became the third radio station in all of Canada. Other broadcast locations over the years for CKOC include, the 11th floor of the Royal Connaught Hotel in the downtown core, the Lister Block building on James & King Williams Streets, and a studio on Garfield Avenue near King & Sherman Avenue North.