CBC Radio One

CBC Radio One

Type	Radio network
Country	Canada
Availability	AM/FM: Canada Satellite: Canada, United States
Owner	Canadian Broadcasting Corporation
Launch date	1936
Former names	CBC Radio (1936–44, 1962–97) Trans-Canada Network (1944–62)
Official website	CBC Radio One

CBC Radio One is the English-language news and information radio network of the publicly owned Canadian Broadcasting Corporation. It is commercial-free and offers local and national programming. It is available on AM and FM to 98 per cent of Canadians, and overseas through Radio Canada International, over the Internet, and through mobile apps.

A modified version of CBC Radio One, with local content replaced by additional airings of national programming, is available on Sirius XM Satellite Radio channel 169. It is downlinked to subscribers via Sirius XM Canada and its U.S.-based counterpart, Sirius XM Satellite Radio.

In 2010, CBC Radio One reached 4.3 million listeners each week. It was the largest radio network in Canada.

CBC Radio began in 1936, and is the oldest branch of the corporation. In 1949, the facilities and staff of the Broadcasting Corporation of Newfoundland were transferred to CBC upon Newfoundland's entry into Canadian Confederation.

Beginning in 1944, the CBC operated two English-language radio services: the original network became the Trans-Canada Network, and a second network, the Dominion Network, was established with CJBC in Toronto as its flagship. With the exception of CJBC, all 35 stations on the CBC Dominion Network were privately owned affiliates. Its programming tended to be lighter than that of the Trans-Canada Network, carrying more American programming in its schedule. The Dominion Network operated only in the evenings, freeing affiliates to air local programming during the day.

Until 1958, the CBC was a broadcaster, and the principal broadcast regulator in Canada. It used this dual role to take most of Canada's clear-channel frequencies on the AM dial.

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