Standard frequency and time signal service: Difference between revisions

Revision as of 02:55, 21 December 2017

Revision as of 03:47, 21 December 2017

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:''This article is about the global ''' Standard frequency and time signal service''' intended for general utilization in accordance to ITU Radio Regulations, article 1.53, and should not be confused with the USA [[Standard time and frequency signal]].

[[File:Dcf77.jpg|thumb|250px|<center> Standard frequency and time signal radio station [[DCF77]]]]

[[File:YVTO time.ogg|thumb|<center> Radiocommunication signal of the time signal transmitter station [[YVTO]]]]

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'''Standard frequency and time signal service''' (short: '''SFTS''') is – according to ''Article 1.53'' of the [[International Telecommunication Union|International Telecommunication Union´s]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR)<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.53, definition: ''standard frequency and time signal service''</ref> – defined as ''«A radiocommunication service for scientific, technical and other purposes, providing the transmission of specified frequencies, time signals, or both, of stated high precision, intended for general reception''.»

;See also: {{main|Radio station|Radiocommunication service}}

==Classification==

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== Time signals in use ==

=== United States ===

The '''Standard Time and Frequency Signal''' (STFS) is a [[Radiocommunication service]] providing the transmission of specified [[frequency]] and [[time]] signal, of [[Standardization|stated]] high precision, intended for general reception in the United States and beyond. The radio signals are broadcast on very precise [[Carrier signal|carrier]] frequencies by the [[United States Naval Observatory|U.S. Naval Observatory]] and the [[National Institute of Standards and Technology]] (NIST), formerly the National Bureau of Standards (NBS). The technical specification of that particular service is in line to the provisions of the [[International Telecommunication Union|International Telecommunication Union´s]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR)<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.53, definition: ''standard frequency and time signal service''</ref>

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==References /External sourceslinks ==

* [http://tf.nist.gov/ NIST Time and Frequency Division]

<references />

* [http://www.nplindia.org/time-and-frequency-standards NPL India Time and Frequency Standards]

* [http://www.itu.int International Telecommunication Union (ITU)]

{{Radiocommunication services ITU}}

==References ==

{{reflist}}

{{Radiocommunication services ITU}}

[[Category:Radiocommunication services ITU]]

[[Category:Standards]]

[[Category:Time signals]]