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  2. Time signal - Wikipedia

    en.wikipedia.org/wiki/Time_signal

    A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day. Church bells or voices announcing hours of prayer gave way to automatically operated chimes on public clocks ; however, audible signals (even signal guns) have limited range.

  3. Greenwich Time Signal - Wikipedia

    en.wikipedia.org/wiki/Greenwich_Time_Signal

    Five short pips and a long pip is broadcast between :55 and :00. The time signal broadcast at 15:00 EET is from Bulgarian Institute of Metrology. Canada – The National Research Council Time Signal was broadcast daily on Ici Radio-Canada Première at 12:00 EST/EDT and on CBC Radio One at 13:00 EST/EDT. It was Canada's longest running radio ...

  4. 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.

  5. Time from NPL (MSF) - Wikipedia

    en.wikipedia.org/wiki/Time_from_NPL_(MSF)

    The Time from NPL is a radio signal broadcast from the Anthorn Radio Station near Anthorn, Cumbria, which serves as the United Kingdom's national time reference. [1] The time signal is derived from three atomic clocks installed at the transmitter site, and is based on time standards maintained by the UK's National Physical Laboratory (NPL) in Teddington. [2]

  6. Time synchronization in North America - Wikipedia

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

    A standard frequency and time signal service is a station that operates on or immediately adjacent to 2.5 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, and 25 MHz, as specified by Article 5 of the ITU Radio Regulations (edition 2012). [2]

  7. CHU (radio station) - Wikipedia

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

    Between 31 and 39 seconds past the minute inclusive, the once-per-second tones are reduced to 10-millisecond "ticks" while a digital time code is transmitted. The digital time code is formatted so that a Bell 103-compatible 300-baud modem can decode it, [5] and CHU is the only time signal station that uses this format for its time code ...

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