The RCI interval signal consists of the first four notes of O Canada played on the piano, followed by the words “Radio Canada International” in English and then in French.
Radio Canada International
Canada needed a broadcasting service that would broadcast its views around the world. In the early 1940s, this need was also recognized by Parliament.
Early development of radio
From the late 1890s to 1913, there were few regulations on radio communications in Canada. The earliest stations could transmit only Morse code