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  2. National Research Council Time Signal - Wikipedia

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

    The most recent spoken header, as announced by one of CBC Radio's promotional voices, was as follows: The National Research Council official time signal. The beginning of the long dash indicates exactly one o'clock, Eastern (Standard/Daylight Saving) Time. In different time zones, the local time and time zone was used instead.

  3. Clock of the Long Now - Wikipedia

    en.wikipedia.org/wiki/Clock_of_the_Long_Now

    The Clock of the Long Now, also called the 10,000-year clock, is a mechanical clock under construction that is designed to keep time for 10,000 years. It is being built by the Long Now Foundation . A two-meter prototype is on display at the Science Museum in London.

  4. Sony Dream Machine - Wikipedia

    en.wikipedia.org/wiki/Sony_Dream_Machine

    A clock radio that has a different alarm sound and has a volume control and two different alarms. This one comes in the MK2 version as well, It has a red LED display, and for the MK2, it has a green LED display. The first alarm is a radio alarm and the second one is the buzzer, Two bands; FM and AM.

  5. 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.

  6. List of longest-running radio programmes - Wikipedia

    en.wikipedia.org/wiki/List_of_longest-running...

    A weekly children's radio program. Off the air during World War II. By the time of its final broadcast it had become the world's longest-running regular weekly radio series. [16] La Hora Nacional: 87 25 July 1937 Weekly government-sponsored cultural and information broadcast required to be aired by all Mexican radio stations. CBS World News ...

  7. The best sunrise alarm clocks of 2025 - AOL

    www.aol.com/lifestyle/best-sunrise-alarm-clocks...

    Other cool features of this mid-priced sunset alarm clock are the variable duration of the sunrise or sunset simulations (20, 30, or 45 minutes), a light-sensitive clock display that brightens ...

  8. WWVB - Wikipedia

    en.wikipedia.org/wiki/WWVB

    WWVB's Colorado location makes the signal weakest on the U.S. east coast, where urban density also produces considerable interference. In 2009, NIST raised the possibility of adding a second time code transmitter, on the east coast, to improve signal reception there and provide a certain amount of robustness to the overall system should weather or other causes render one transmitter site ...

  9. Time synchronization in North America - Wikipedia

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

    Radio-controlled clock: NIST list of receivers [19] AC-100-WWVB Time Receiver; AC-500-MSF Time Receiver; ClockWatch Radio Sync [20] F6CTE's CLOCK [15] WWV: 2.5, 5, 10, 15, and 20 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)

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