Aeronautical mobile (R) service

Aeronautical mobile (R) service in the Washington ARTCC

Aeronautical mobile (R) service (short: AMS(R);  | also: aeronautical mobile radiocommunication (R) service) is – according to Article 1.33 of the International Telecommunication Union´s (ITU) Radio Regulations (RR)^[1] – defined as «An aeronautical mobile service reserved for communications relating to safety and regularity of flight, primarily along national or international civil air routes.»

This service is a so-called safety-of-life service, must be protected for Interferences, and is essential part of air traffic control.

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 (R)° service (article 1.33)
  • Aeronautical mobile (OR)°° (article 1.34)
  • Aeronautical mobile-satellite service (article 1.35)
    • 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 within 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
117.975–136 MHz AERONAUTICAL MOBILE (R)
136–137 MHz AERONAUTICAL MOBILE (R) Fixed Mobile except aeronautical mobile (R)
2 850–3 155 MHz AERONAUTICAL MOBILE (R)
3 025–3 025 MHz AERONAUTICAL MOBILE (OR)

References / sources

1. ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.33, definition: aeronautical mobile (R) service / aeronautical mobile radiocommunication (R) service
2. ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations

• International Telecommunication Union (ITU)