Aeronautical mobile-satellite service

Principle of AMSS

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

Classification

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

• Aeronautical mobile service (article 1.32)
  • Aeronautical mobile-satellite service
    • Aeronautical mobile-satellite (R)° service (article 1.36)
    • Aeronautical mobile-satellite (OR)°° service (article 1.37)

(R)° = abbreviation to route flights (route)
(OR)°° = abbreviation to flights others than on routs (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

• International Telecommunication Union (ITU)