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John Doyle is a professional announcer whose voice was most notably used by the National Institute of Standards and Technology on their radio clock WWV, a "time and temperature" voice for the Audichron ...
Radio transmissions using wavelengths between 10 and 100 m
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Shortwave radio is radio transmission using radio frequencies in the shortwave bands (SW). There is no official definition of the band range, but it always includes all of the high frequency band (HF) ...
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WWV is a shortwave ("high frequency" or HF) radio station, located near Fort Collins, Colorado. It has broadcast a continuous time signal since 1945, and implements United States government frequency ...
Former coastal radio station in East Frisia, Lower Saxony, Germany
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Norddeich Radio, DAN (former call signs KND, KAV, DAF) was the coast radio station for international communication to German ships. The station was built in 1907 in Norddeich, North-Germany. Radio com ...
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BSF is the callsign of the time signal transmitter owned by the National Time and Frequency Standards Laboratory of the Ministry of Economic Affairs (Taiwan), which transmits time information on 77.5 kHz ...
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RTZ is the callsign of the time signal transmitted on 50 kHz with 10 kW from a large transmission centre near Irkutsk, Russia. It is controlled by All-Russian Scientific Research Institute for Physica ...
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JN53dv is the Maidenhead grid square of an experimental shortwave time signal station in Italy. It is located in the town of Corsanico-Bargecchia near Massarosa and operated by Italcable
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BPL is the call sign of the official long-wave time signal service of the People's Republic of China, operated by the Chinese Academy of Sciences, broadcasting on 100 kHz from CAS's National Time Service ...
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RBU is a time signal radio station located in Moscow (56°44′00″N 37°39′48″E / 56.73333°N 37.66333°E). It transmits a continuous 10 kW time code on 66⅔ kHz. This is commonly written as 66.66 ...
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HBG was a low frequency time signal transmitter for the Swiss time reference system. It transmitted on 75 kHz with 20 kW power, and was located in Prangins, Switzerland.
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OMA was the callsign of a Czech time signal station. The station was operated by the Astronomical Institute of Prague and the transmitters were located at RKS Liblice 1.
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Beta is a time signal service in the VLF range in Russia, operated by the Russian Navy. It is controlled by All-Russian Scientific Research Institute for Physical-Engineering and Radiotechnical Metrology ...
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YVTO is the callsign of the official time signal from the Juan Manuel Cagigal Naval Observatory in Caracas, Venezuela. The content of YVTO's signal, which is a continuous 1 kW amplitude modulated carrier ...
German longwave time signal and standard-frequency radio station
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DCF77 is a German longwave time signal and standard-frequency radio station. It started service as a standard-frequency station on 1 January 1959. In June 1973, date and time information was added. Its ...
Radio time signal station in Kekaha, Hawaii, United States
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WWVH is the callsign of the U.S. National Institute of Standards and Technology's shortwave radio time signal station located at the Pacific Missile Range Facility Barking Sands, in Kekaha, on the island ...
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BPM is the call sign of the official short-wave time signal service of the People's Republic of China, operated by the Chinese Academy of Sciences, broadcasting from CAS's National Time Service Center ...
Time signal transmitted from Anthorn Radio Station near Anthorn, Cumbria
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The formal inauguration of the relocated facility took place on 1 April 2007, when the name of the service became "The Time from NPL" and the signal from Rugby was permanently switched off. The change ...
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Radio Reloj (Spanish for Radio Clock) is a government-owned Spanish-language radio station in Cuba. It carries an all-news format and is based in Havana.