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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.
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) TrueTime TL-3 WWV Receiver; ntpd with Radio WWV Audio Demodulator/Decoder (driver can tune ICOM HF radios via C-IV) COAA's Radio Clock; F6CTE's CLOCK; WWVH
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. Normal low-cost consumer-grade receivers that rely on the amplitude-modulated time ...
Counterpoise (ground system) Diagram of counterpoise under the antenna mast of an AM radio station. It consists of a network of radial copper wires suspended above the ground, connected to the transmitter feedline ground. It is suspended about 8 feet above ground, so technicians can get access to the helix house at the foot of the tower.
In the mid 1960s, Sony introduced the first Dream Machine. The basic idea was to use a radio program to wake up users more pleasantly, as many people found the loud mechanical alarm made by traditional alarm clocks disturbing. The use of direct-read digital display as opposed to a traditional clock dial gave the design a modernistic feel, which ...
These automatic signal clocks were synchronizedby telegraphyin 1905 before the widespread use of radio. A time signalis a visible, audible, mechanical, or electronic signalused as a reference to determine the time of day. Church bellsor voices announcing hours of prayergave way to automatically operated chimeson public clocks; however, audible ...
CHU (radio station) / 45.294806°N 75.757861°W / 45.294806; -75.757861. CHU is the call sign of a shortwave time signal radio station operated by the Institute for National Measurement Standards of the National Research Council. [1] CHU's signal is used for continuous dissemination of official Canadian government time signals, derived ...
Flip clock. A flip clock (also known as a "flap clock") is an electromechanical, digital time keeping device with the time indicated by numbers that are sequentially revealed by a split-flap display. The study, collection and repair of flip clocks is termed horopalettology (from horology - the study and measurement of time and palette - and the ...
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