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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.
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 ...
This page was last edited on 27 June 2007, at 23:25 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may ...
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. Busy seaports used a visual signal ...
The master clock (bottom center), controlled by a temperature-compensated mercury pendulum, is wired to slave clocks throughout the building. In addition to wall clocks, it also controls time stamps that are used to stamp documents with the time, and a turret clock used in a clock tower. The "program clock" is a timer that can be programmed ...
Radio-controlled clock: NIST list of receivers; AC-100-WWVB Time Receiver; AC-500-MSF Time Receiver; ClockWatch Radio Sync; F6CTE's CLOCK; 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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