Standard frequency and time signal service (short: SFTS) is, according to Article 1.53 of the International Telecommunication Union's (ITU) Radio Regulations (RR),[1] "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".
Standard frequency and time signal radio station DCF77
Radiocommunication signal of the time signal transmitter station YVTO
In accordance with ITU Radio Regulations (article 1) variations of this radiocommunication service are classified as follows: Standard frequency and time signal service (article 1.53)
The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations (edition 2012).[2]
In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is with-in the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared.
primary allocation: is indicated by writing in capital letters (see example below)
secondary allocation: is indicated by small letters
^ abITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.53, definition: standard frequency and time signal service
^ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations
^ abcdefg(PDF). Archived from the original (PDF) on 2017-12-22.
External linksedit
NPL India Time and Frequency Standards
January 01, 1970
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Main articles Radio station and Radiocommunication service Standard frequency and time signal service short SFTS is according to Article 1 53 of the International Telecommunication Union s ITU Radio Regulations RR 1 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 Standard frequency and time signal radio station DCF77 source source Radiocommunication signal of the time signal transmitter station YVTO Contents 1 Classification 2 Frequency allocation 3 Time signals in use 3 1 United States 4 See also 5 References 6 External linksClassification editIn accordance with ITU Radio Regulations article 1 variations of this radiocommunication service are classified as follows Standard frequency and time signal service article 1 53 Standard frequency and time signal satellite service In general this radiocommunication service uses radio stations as follows Standard frequency and time signal stations article 1 95 Frequency allocation editThe allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations edition 2012 2 In order to improve harmonisation in spectrum utilisation the majority of service allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is with in the responsibility of the appropriate national administration The allocation might be primary secondary exclusive and shared primary allocation is indicated by writing in capital letters see example below secondary allocation is indicated by small letters Example of frequency allocation Allocation to services Region 1 Region 2 Region 3 19 95 20 05 MHz STANDARD FREQUENCY AND TIME SIGNAL 20 MHz 2 498 2 501 MHz STANDARD FREQUENCY AND TIME SIGNAL 2 500 MHz 4 995 5 003 MHz STANDARD FREQUENCY AND TIME SIGNAL 5 000 MHz 5 003 5 005 MHz STANDARD FREQUENCY AND TIME SIGNAL Space research dd dd dd dd dd 9 995 10 003 MHz STANDARD FREQUENCY AND TIME SIGNAL 10 000 MHz 10 003 10 005 MHz STANDARD FREQUENCY AND TIME SIGNAL Space research dd dd dd dd dd 14 990 15 005 MHz STANDARD FREQUENCY AND TIME SIGNAL 15 000 MHz 15 005 15 010 MHz STANDARD FREQUENCY AND TIME SIGNAL Space research dd dd dd dd dd 19 990 19 995 MHz STANDARD FREQUENCY AND TIME SIGNAL Space research dd dd dd dd dd 19 995 20 010 MHz STANDARD FREQUENCY AND TIME SIGNAL 20 000 MHz 24 990 25 005 MHz STANDARD FREQUENCY AND TIME SIGNAL 25 000 MHz 25 005 25 010 MHz STANDARD FREQUENCY AND TIME SIGNAL Space research dd dd dd dd dd Time signals in use editThe following are the known HF time signal stations currently operational Call Sign Location Frequencies Time Signal Provided Time Signal Format Notes ITU R Standard Frequency and Time Signal services BPM Pucheng China 2 5 5 10 amp 15 MHz ITU R TF 768 5 3 BSF Chung Li Taiwan Rep of China 5 and 15 MHz EBC Cadiz 4 998 MHz HLA Taejon Republic of Korea 5 MHz ITU R TF 768 5 3 IAM Rome Italy 5 MHz ITU R TF 768 5 3 LOL Buenos Aires Argentina 5 10 amp 15 MHz ITU R TF 768 5 3 MIKES Espoo Finland 25 MHz OMA Prague Czech Republic 2 5 MHz Discontinued in 1995 PPE Rio de Janeiro Brazil 10 MHz RWM Moscow Russia 4 996 9 996 14 996 MHz ITU R TF 768 5 3 WWV Fort Collins Colorado United States 2 5 5 10 15 amp 20 MHz ITU R TF 768 5 3 WWVH Kekaha Kauai Hawaii United States 2 5 5 10 amp 15 MHz ITU R TF 768 5 3 YVTO Caracas Venezuela 5 MHz Time signal stations on non standard frequencies CHU Ottawa Ontario Canada 3 33 7 85 14 67 MHz United States edit The Standard Time and Frequency Signal STFS is a Radiocommunication service providing the transmission of specified frequency and time signal of stated high precision intended for general reception in the United States and beyond The radio signals are broadcast on very precise carrier frequencies by the 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 s ITU Radio Regulations RR 1 See also editTime synchronization in North America Radio Clock Time signal Radio time sourcesReferences edit a b ITU Radio Regulations Section IV Radio Stations and Systems Article 1 53 definition standard frequency and time signal service ITU Radio Regulations CHAPTER II Frequencies ARTICLE 5 Frequency allocations Section IV Table of Frequency Allocations a b c d e f g RECOMMENDATION ITU R TF 768 5 Standard frequencies and time signals PDF Archived from the original PDF on 2017 12 22 External links editNIST Time and Frequency Division NPL India Time and Frequency Standards Retrieved from https en wikipedia org w index php title Standard frequency and time signal service amp oldid 1116838441, wikipedia, wiki, book, books, library,
