Time Signals

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Time Signals


signals transmitted by radio and television at certain times of the day and used to determine the time on atomic and astronomical scales. In the USSR, time signals transmitted by broadcast radio stations and used to set clocks consist of six short signals. The beginning of the last signal coincides with the beginning of the hour. Time signals for scientific and technical purposes are transmitted by special radio stations and by television in accordance with officially approved schedules and programs; in the USSR they are approved by the Interdepartmental Commission of the Unified Time Service of the Gosstandart (State Standard Administration) of the USSR. Since 1972, the time signals of the USSR have been transmitted on an internationally coordinated scale of atomic time. The coordination of this scale with the scale of Greenwich time is achieved by having all transmitting stations simultaneously shift the minute signal by 1 sec, usually at the end of the year.

Coded approximate values for differences between Greenwich time and coordinated time are transmitted together with the time signals.


Belotserkovskii, D. Iu., and G. N. Palii. “Novaia sistema peredachi radiosignalov tochnogo vremeni i obraztsovykh chastot.” Izmeritel’naia tekhnika, 1971, no. 11.


References in periodicals archive ?
The worldwide coordination of time signals is critical for the functioning and reliability of systems that depend on time, said Francois Rancy, Director of the ITU Radiocommunication Bureau.
TGF-beta functions as an important time signal that controls when a stem cell should stop producing one type of nerve cell and instead start producing another, while also gradually limiting the stem cell's future development capacity," said Johan Ericson, professor of developmental biology.
In addition to spectrum and time signal, the measuring technique also generates two scalar values, HDm and HDc.
Observatories, meanwhile, were raising modest revenues from subscribers to their time signals, and had a vested interest in preserving the local-time system.
A host of technical developments in the practical applications of electricity gave rise to rivalries, false starts, patent races and infringement disputes over the many methods for coordinating, synchronizing, or distributing time signals.
Its chimes are broadcast on BBC radio as part of its time signal service and to herald the start of Radio 4's Six O'Clock News.
NIST now broadcasts a time signal from an atomic clock through its radio station in Fort Collins, Colo.