Aeronautical radionavigation service


Aeronautical radionavigation service is – according to Article 1.46 of the International Telecommunication Union's Radio Regulations – defined as «A radionavigation service intended for the benefit and for the safe operation of aircraft.»
This service is a so-called safety-of-life service, must be protected for Interferences, and is essential part of Navigation.

Classification

This radiocommunication service is classified in accordance with ITU Radio Regulations as follows:

Radiodetermination service
The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations.
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.
; Example of frequency allocation: