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  2. Radio clock - Wikipedia

    en.wikipedia.org/wiki/Radio_clock

    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.

  3. WWVB - Wikipedia

    en.wikipedia.org/wiki/WWVB

    WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST). [ 1] Most radio-controlled clocks in North America [ 2] use WWVB's transmissions to set the correct time. The normal signal transmitted from WWVB is 70 kW ERP and uses a 60 kHz carrier wave yielding a ...

  4. Atomic clock - Wikipedia

    en.wikipedia.org/wiki/Atomic_clock

    A radio clock is a clock that automatically synchronizes itself by means of radio time signals received by a radio receiver. Some manufacturers may label radio clocks as atomic clocks, [ 204 ] because the radio signals they receive originate from atomic clocks.

  5. Master clock - Wikipedia

    en.wikipedia.org/wiki/Master_clock

    A master clock is a precision clock that provides timing signals to synchronise slave clocks as part of a clock network. Networks of electric clocks connected by wires to a precision master pendulum clock began to be used in institutions like factories, offices, and schools around 1900. Modern radio clocks are synchronised by radio signals or ...

  6. List of atomic clocks - Wikipedia

    en.wikipedia.org/wiki/List_of_atomic_clocks

    Korea Research Institute of Standards and Science. Daejeon, South Korea. Caesium atomic clocks [25] Cs. National Metrology Centre. Queenstown, Singapore. Five caesium clocks, one passive hydrogen maser, two active hydrogen masers.

  7. Time signal - Wikipedia

    en.wikipedia.org/wiki/Time_signal

    Today, global navigation satellite systems radio signals are used to precisely distribute time signals over much of the world. There are many commercially available radio controlled clocks available to accurately indicate the local time, both for business and residential use. Computers often set their time from an Internet atomic clock source ...

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