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Weatheradio Canada (in French ''Radiométéo Canada'') is a Canadian radio network that broadcasts continuous weather information. Owned and operated by Environment Canada's Meteorological Service of Canada division, the network transmits in both official languages (English and French) from 230 sites across Canada. In most locations, the service broadcasts on one of seven specially-allocated VHF radio frequencies, audible only on dedicated "weather band" receivers or any VHF radio capable of receiving 10 kHz bandwidth FM signals centered on these assigned channels, which are located within the larger "public service band". In some locations — primarily national and provincial parks and remote communities with little or no local media service — a transmitter operated by the Canadian Broadcasting Corporation carries the service on a standard AM or FM broadcast frequency. As of August 2007, most of these AM and FM transmitters were unlicensed by the CRTC under a special license exemption granted to low-power non-commercial broadcasters.〔(Broadcasting Decision CRTC 2007-280 ), August 7, 2007.〕 Weatheradio Canada has a national coverage rate of over 90%. However, not every populated or forecasted region of the country is within range of a transmitter.〔For example, there is no Weatheradio Canada signal receivable in Princeton in British Columbia.〕 The radio frequencies used by Weatheradio Canada are the same as those used by its American counterpart, NOAA Weather Radio. Weather radio receivers designed for use in one country are compatible for use in the other. Since 2004, the service has been using Specific Area Message Encoding (SAME) alerting technology to disseminate severe weather bulletins. Weatheradio has indicated that, in the future, it also plans to add other hazard and civil emergency information (such as natural disasters, technological accidents, AMBER alerts and terrorist attacks) to its broadcasts. Weather information is broadcast using a synthesized voice. The technology employed to produce the voice is the StarCaster text-to-speech system, which uses concatenative synthesis. == History == For the most part, the VHF-FM band plan and radio technology used remains the same. While Weatheradio has evolved and incorporated many features into its broadcasts, Canada has not made any innovations to the transmission standard, as the technology was designed for American use. However, the technology is available for Canadians to implement at their discretion. 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「Weatheradio Canada」の詳細全文を読む スポンサード リンク
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