From Wikipedia, the free encyclopedia
Aeronautical station
of the
Aeronautical mobile (OR) service
in Afghanistan
Aeronautical mobile (R) service
in the
Washington ARTCC
US Airways Flight 1549
record (
ATC
) during the emergency landing in the Hudson River
Britische
VOLMET
-record on
HF
Aeronautical mobile service
(short:
AMS
; also:
aeronautical mobile radiocommunication service'
) is a form of
aviation communication
conducted through
radio
. The
ITU Radio Regulations
divide AMS into communication used for civil
air route
flights (R) and off-route flights (OR). Aeronautical mobile (R) service is a so-called
safety-of-life service
, must be protected for
interferences
, and is an essential part of
air traffic control
. Communication occurs between radio stations onboard aircraft, termed
aircraft stations
, and terrestrial stations that are sometimes termed "aeronautical stations". Communication can also occur between aircraft.
[1]
AMS is commonly used in
air traffic control
.
Aeronautical mobile satellite service
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]
![](//upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Uplinkdownpp.svg/250px-Uplinkdownpp.svg.png)
Principle of aeronautical mobile satellite service
Aeronautical
mobile satellite service
(AMSS) is a form of AMS where an aircraft station is connected to a
communications satellite
. It is useful in situations where the aircraft is far away from any radio station on land.
[2]
Frequency allocation
[
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]
The allocation of radio frequencies is provided according to
Article 5
of the
ITU Radio Regulations
(edition 2012).
[3]
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
However, military usage, in bands where there is civil usage, will be in accordance with the ITU Radio Regulations. In NATO countries military utilizations will be in accordance with the
NATO Joint Civil/Military Frequency Agreement
(NJFA).
- Example of
frequency allocation
Allocation to services
|
Region 1
|
Region 2
|
Region 3
|
2 850?3 155 MHz
- AERONAUTICAL MOBILE (R)
|
3 025?3 025
- AERONAUTICAL MOBILE (OR)
|
Frequency range
(
shortwave
)
On-Route
(R)
|
|
Off-Route
(OR)
|
2850
|
?
|
3025 kHz
|
|
3025
|
?
|
3155 kHz
|
3400
|
?
|
3500 kHz
|
|
3500
|
?
|
3950 kHz
|
4650
|
?
|
4700 kHz
|
|
4700
|
?
|
4850 kHz
|
5450
|
?
|
5480 kHz
|
|
5450
|
?
|
5480 kHz
|
5480
|
?
|
5680 kHz
|
|
5480
|
?
|
5730 kHz
|
6525
|
?
|
6685 kHz
|
|
6685
|
?
|
6765 kHz
|
8815
|
?
|
8965 kHz
|
|
8965
|
?
|
9040 kHz
|
10005
|
?
|
10100 kHz
|
|
11175
|
?
|
11275 kHz
|
11275
|
?
|
11400 kHz
|
|
13200
|
?
|
13260 kHz
|
13260
|
?
|
13360 kHz
|
|
15010
|
?
|
15100 kHz
|
17900
|
?
|
17970 kHz
|
|
17970
|
?
|
18030 kHz
|
21924
|
?
|
22000 kHz
|
|
23200
|
?
|
23350 kHz
|
See also
[
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]
Sources
[
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]