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PetesGuide (talk | contribs) →United States: Updated table deleting stations off the air without wikipedia articles |
PetesGuide (talk | contribs) →Time signals in use: Reordered text below table to clarify table covers not just U.S.; rearranged table to separate non-standard signals. |
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== Time signals in use ==
The following are the known [[High frequency|HF]] time signal stations currently operational.
=== 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>▼
{| class="wikitable"
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!Time Signal Format
!Notes
|-▼
| colspan="6" |'''ITU-R Standard Frequency and Time Signal services'''
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|[[BPM (time service)|BPM]]
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|Chung-Li, Taiwan, Rep. of China
|5 and 15 MHz
|▼
|▼
|▼
▲|-
|[[CHU (radio station)|CHU]]▼
|[[Ottawa, Ontario]], Canada▼
|14.67 MHz▼
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|Caracas, [[Venezuela]]
|5 MHz
▲|
▲|
▲|
|-
| colspan="6" |'''Time signal stations on non-standard frequencies'''
|-
▲|[[CHU (radio station)|CHU]]
▲|[[Ottawa, Ontario]], Canada
▲|14.67 MHz
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▲=== 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>
== External links ==
* [http://tf.nist.gov/ NIST Time and Frequency Division]
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