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  2. CHU (radio station) - Wikipedia

    en.wikipedia.org/wiki/CHU_(radio_station)

    Since deciphering even a simple time code "by ear" was occasionally difficult under field conditions, voice announcements of time and station identification were added to CHU in 1952, using a speaking clock made by Ateliers Brillié Frères of France. Fredrick Martin Meach of the Canadian embassy in Paris recorded the time announcements in ...

  3. Time in Canada - Wikipedia

    en.wikipedia.org/wiki/Time_in_Canada

    It was followed by Winnipeg on April 23, Halifax on April 30, and Hamilton, Ontario, on June 4. [26] Port Arthur, Ontario, was the first place in the world to introduce it, on July 1, 1908. Daylight saving time is currently observed in nine of ten provinces and two of three territories, with exceptions in several provinces and Nunavut. Most of ...

  4. Atomic clock - Wikipedia

    en.wikipedia.org/wiki/Atomic_clock

    The offset UTC-UTC(k) is calculated every 5 days, the results are published monthly. Atomic clocks record UTC(k) to no more than 100 nanoseconds. In some countries, UTC(k) is the legal time that is distributed by radio, television, telephone, Internet, fiber-optic cables, time signal transmitters, and speaking clocks. In addition, GNSS provides ...

  5. National Research Council Time Signal - Wikipedia

    en.wikipedia.org/wiki/National_Research_Council...

    During the late 1980s and early 1990s, a modified version of the NRC Telephone Talking Clock was transmitted over television channel CPAC while the House of Commons was not sitting. The announcements alternated between English and French, and cycled through all six of Canada's time zones , as well as UTC .

  6. Time synchronization in North America - Wikipedia

    en.wikipedia.org/wiki/Time_synchronization_in...

    COAA's Radio Clock [21] F6CTE's CLOCK [15] WWVH: 5, 10, and 15 MHz AM Voice with modified IRIG-Hformat time code on 100 Hz sub-carrier (CCIR code) HF radio and antenna (plus software if automatic updating of computer time is desired) TrueTime TL-3 WWV Receiver; CHU: 3.33 MHz, 7.85 MHz, 14.67 MHz Bell 103 modem tones, decodable by most computer ...

  7. Radio clock - Wikipedia

    en.wikipedia.org/wiki/Radio_clock

    A modern LF radio-controlled clock. A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly [1]) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.

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