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Radio Regulations published by the International Telecommunication
Union (ITU). Radio Regulations are amended,from
time to time by the decisions embodied in the Final Acts of
World Radiocommunication Conferences held normally every
two to three yearis. Further information on the ITU processes
as they relute to aeronautical mdio system ,frequency use is
contained in the Handbook on Radio Frequency Spectrum
Requirements for Civil Aviation including statement of
approved ICAO policies (Doc 9718).
Aeronautical fmed service (AFS). A telecommunication
service between specified fixed points provided primarily
for the safety of air navigation and for the regular, efficient
and economical operation of air services.
Aeronautical fixed telecommunication network (AFTN). A
worldwide system of aeronautical fixed circuits provided,
as part of the aeronautical fixed service, for the exchange
of messages and/or digital data between aeronautical fixed
stations having the same or compatible communications
characteristics.
Aeronautical mobile service (RR S1.32). A mobile service
between aeronautical stations and aircraft stations, or
between aircraft stations, in which survival craft stations
may participate; emergency position-indicating radiobeacon
stations may also participate in this service on designated
distress and emergency frequencies.
1.1 Services Aeronautical mobile (R) * service (RR S1.33). An aeronautical
mobile service reserved for communications relating to
Aeronautical broadcasting service. A broadcasting service
intended for the transmission of information relating to air
navigation. * route
ANNEX 10 - VOLUME I1 1-1
Annex 10 - Aeronautical Telecommunications Volume II
safety and regularity of flight, primarily along national or
international civil air routes.
Aeronautical mobile-satellite service (RR $1.35). A mobilesatellite
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.
Aeronautical mobile-satellite (R)* service (RR S1.36). An
aeronautical mobile-satellite service reserved for communications
relating to safety and regularity of flights, primarily
along national or international civil air routes.
Aeronautical radio navigation sewice (RR S1.46). A radio
navigation service intended for the benefit and for the safe
operation of aircraft.
N o t e . The ,following Radio Regulations are quoted ,for
purposes of reference and/or clarity in understanding of the
above definition of the aeronautical vadio navigation service:
RR S1.10 Radio navigation: Radiodetermination used, for
the purpose of navigation, including obstruction
warning.
RR S1.9 Radiodetermination: The determination of the
position, velocity and/or other characteristics
of an object, or the obtaining of information
relating to these parameters, by means of the
propagation properties of radio waves.
Aeronautical telecommunication service. A telecommunication
service provided for any aeronautical purpose.
International telecommunication service. A telecommunication
service between offices or stations of different
States, or between mobile stations which are not in the
same State, or are subject to different States.
1.2 Stations
Aerodrome control radio station. A station providing radiocommunication
between an aerodrome control tower and
aircraft or mobile aeronautical stations.
Aeronautical fixed station. A station in the aeronautical fixed
service.
Aeronautical station (RR S1.81). A land station in the aeronautical
mobile service. In certain instances, an aeronautical
station may be located, for example, on board ship or
on a platform at sea.
* route
Aeronautical telecommunication station. A station in the
aeronautical telecommunication service.
AFTN communication centre. An AFTN station whose
primary function is the relay or retransmission of AFTN
traffic from (or to) a number of other AFTN stations
connected to it.
AFTN destination station. An AFTN station to which
messages andior digital data are addressed for processing
for delivery to the addressee.
AFTN origin station. An AFTN station where messages
and/or digital data are accepted for transmission over the
AFTN.
AFTN station. A station forming part of the aeronautical fixed
telecommunication network (AFTN) and operating as such
under the authority or control of a State.
Air-ground control radio station. An aeronautical telecommunication
station having primary responsibility for
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