Space research service explained

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)^[1] – defined as «A radiocommunication service in which spacecraft or other objects in space are used for scientific or technological research purposes.»

See also:

See main article: Radiocommunication service.

Frequency allocation

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 (see example below)
exclusive or shared utilization: is within the responsibility of administrations

Example of frequency allocation:

Allocation to services
	Region 2	Region 3
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 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)