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Maritime mobile-satellite service

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MMSS Inmarsat-3 satellite locations

Maritime mobile-satellite service (MMSS, or maritime mobile-satellite radiocommunication service) is – according to Article 1.29 of the International Telecommunication Union's Radio Regulations (RR) – "A mobile-satellite service in which mobile earth stations are located on board ships; survival craft stations and emergency position-indicating radiobeacon stations may also participate in this service", in addition to serving as navigation systems.

Classification

This radiocommunication service is classified in accordance with ITU Radio Regulations (article 1) as follows:
Mobile 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
  • secondary allocation: is indicated by small letters
  • exclusive or shared utilization: is within the responsibility of administrations
Example of frequency allocation
Allocation to services
Region 1      Region 2           Region 3     
137–137.025
SPACE OPERATION (space-to-Earth)
METEOROLOGICAL-SATELLITE (space-to-Earth)
MOBILE-SATELLITE (space-to-Earth)
SPACE RESEARCH (space-to-Earth)
Fixed
Mobile except aeronautical mobile (R)
Selection of MMSS stations
  • Space radio station, Inmarsat-3 satellite Space radio station, Inmarsat-3 satellite
  • Earth station, telephone terminal Earth station, telephone terminal
  • Inmarsat aerial (stern of the yacht) Inmarsat aerial (stern of the yacht)
  • Inmarsat aerial of the US Navy Inmarsat aerial of the US Navy
  • Hand-held radios of the MMSS Hand-held radios of the MMSS
  • Inmarsat satellite telephone Inmarsat satellite telephone

See also

References / sources

  1. ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.29, definition: maritime mobile service / maritime mobile radiocommunication service
  2. ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations
Telecommunications symbol    Radio communication services in accordance with ITU Radio Regulations
Fixed
services		Fixed satellite |  Inter-satellite |  Earth exploration-satellite |  Meteorological-satellite
Mobile
services		Mobile-satellite |  Land mobile •  Land mobile-satellite |  Maritime mobile •  Maritime mobile-satellite •  Port operations •  Ship movement |  Aeronautical mobile •  Aeronautical mobile (R) •  Aeronautical mobile (OR) |  Aeronautical mobile-satellite •  Aeronautical mobile-satellite (R) •  Aeronautical mobile-satellite (OR)
Radio-
determination
services		Radiodetermination-satellite |  Radionavigation •  Radionavigation-satellite •  Maritime radionavigation •  Maritime radionavigation-satellite •  Aeronautical radionavigation •  Aeronautical radionavigation-satellite  |  Radiolocation •  Radiolocation-satellite
Other
services		Space operation |  Broadcasting •  Broadcasting-satellite |  Meteorological aids |  Standard frequency and time signal •  Standard frequency and time signal-satellite | Space research | Amateur •  Amateur-satellite |  Radio astronomy |  Safety |  Special
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