Aeronautical mobile-satellite service

Aeronautical mobile-satellite service (short: AMSS;  | also: aeronautical mobile-satellite radiocommunication service) is – according to Article 1.35 of the International Telecommunication Union's (ITU) Radio Regulations (RR)[1] – defined as «A mobile-satellite service in which mobile earth stations are located on board aircraft; survival craft stations and emergency position-indicating radiobeacon stations may also participate in this service. . »

See also
Main articles: Radio station and Radiocommunication service
Principle of AMSS

Classification

This radiocommunication service is classified in accordance with ITU Radio Regulations (article 1) as follows:
Mobile service (article 1.24)

(R)° = abbreviation to route flights (route)
(OR)°° = abbreviation to flights others than on routes (off-route)

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
  • exclusive or shared utilization: is within the responsibility of administrations
Example of frequency allocation
Allocation to services
Region 1      Region 2           Region 3     
5 000–5 010 MHz
AERONAUTICAL MOBILE-SATELLITE (R)
AERONAUTICAL RADIONAVIGATION
RADIONAVIGATION-SATELLITE (Earth-to-space

References / sources
  1. ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.35, definition: aeronautical mobile-satellite service / aeronautical mobile-satellite radiocommunication service
  2. ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations
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