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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 both local and national programming. It is available on AM and FM to 98 per cent of Canadians, and is also available 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 also available on Sirius XM Satellite Radio channel 169. It is downlinked to subscribers via both Sirius XM Canada and its U.S.-based counterpart, Sirius XM Satellite Radio. Current listening figures for CBC Radio One stand at 4.3 million listeners each week. It is the largest radio network in Canada.〔("Millions of people tune into CBC Radio" ) ''Friends of Canadian Broadcasting''. August 2010.〕 ==History== 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. As well, the Dominion Network operated only in the evenings, freeing affiliates to air local programming during the day. In 1962, the Dominion Network was dissolved and within a few years CJBC became a French-language station broadcasting the programming of Radio-Canada. In 1960, the CBC began running distinct programming on its three existing FM English-language stations, which were previously providing simulcasts of programming on its AM stations. The stations, located in Toronto, Ottawa and Montreal, broadcast a monoaural FM signal. Programming consisted mostly of classical music. The stations were linked by CN/CP Telecommunications via land-line and microwave. This service was discontinued in 1962, but resumed in 1964 in stereo. Eventually, a national satellite-distributed network of stereo FM stations was established. In 1975, the FM network was branded ''CBC Stereo'', and the AM service was designated ''CBC Radio''. In the late 1960s and early 1970s, CBC Radio increased its current affairs and documentary content with an initiative known as the "Radio Revolution", using more ambitious, live coverage of news and current affairs including listeners as well as experts. The change began with national shows such as ''As It Happens''.〔Morris Wolfe, ''Fifty Years of Radio'', CBC Enterprises (1986), p. 36〕 The change spread to CBC regional morning shows which developed three hours of live radio combining "survival information", about news, weather and traffic, with interviews and documentaries about local and national issues. CBC Radio Winnipeg was the first to embrace the format followed by ''Information Morning'' in Halifax, a move which increased audience and attracted coverage in ''Time Magazine''.〔"New Sounds", ''Time Magazine'' (June 1971)〕 CBC Radio stopped running commercial advertising in 1974. Until 1995, the network signed off the air between 1 a.m. and 6 a.m. daily – in that year, it launched an overnight program, ''CBC Radio Overnight'', which airs international news and documentary programs. Until 1958, the CBC was not only a broadcaster, but the principal broadcast regulator in Canada. It used this dual role to snap up most of Canada's clear-channel frequencies on the AM dial. However, in the 1990s, many of the CBC's AM stations moved to FM in response to complaints of poor AM reception. This meant that the old distinction between the AM "Radio" network and the FM "Stereo" network was no longer accurate, even though many of the FM "Radio" stations broadcast in mono only. As a result, in 1997 ''CBC Radio'' became CBC Radio One and ''CBC Stereo'' became CBC Radio 2. Although several Radio One stations still broadcast on AM as of 2008, most also have FM rebroadcasters in major urban centres within their broadcast area. The channel was added to the Sirus lineup in 2005 and the XM lineup in 2013. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CBC Radio One」の詳細全文を読む スポンサード リンク
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