title: Space research service
text: # Space research service
  
  Space research service (short: SRS | also: space research radiocommunication service) is – according to Article 1.55 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as «A radiocommunication service in which spacecraft or other objects in space are used for scientific or technological research purposes.»
  
  ## See also
  
      Main articles: Radio station and Radiocommunication service
  
  ## Frequency allocation
  
  The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations (edition 2012).
  
  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 (see example below)
  * exclusive or shared utilization: is within the responsibility of administrations
  
  ### Example of frequency allocation
  
  Allocation to services :
  
  * Region 1
  * 13.4-13.75 GHz   EARTH EXPLORATION-SATELLITE (active)
  * RADIOLOCATION SPACE RESEARCH Standard frequency and time signal-satellite (Earth-to-space) ||
  * 14–14.25 GHz      FIXED-SATELLITE (Earth-to-space)
  * RADIONAVIGATION Mobile-satellite (Earth-to-space) Space research ||
  * 14.25–14.3 GHz  FIXED-SATELLITE (Earth-to-space)
  * RADIONAVIGATION Mobile-satellite (Earth-to-space) Space research ||
  
  ## References / sources
  
  * ↑ ITU Radio Regulations, Section I – General terms – article 1.6, definition: «Radiocommunication = Telecommunication by means of radio waves»
  * ↑ ITU Radio Regulations, Section IV. Radio Stations and Systems – article 1.55, definition: space research service / space research radiocommunication service
  * ↑ ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations
  * International Telecommunication Union (ITU)
  