090 - Communications ATPL(H) IR | ATPL Exam Question Bank

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What elements form the call sign of a ground station?

A
Depending on the rules of the State where the station is located, the elements may include a prefix for the frequency (e.g. 118.725), its location, and a suffix (e.g. RADAR) indicating the type of service being provided.
B
The location, followed by a suffix (e.g. 118.725) that ensures different ground stations at the same location can be distinguished.
C
A prefix (e.g. GROUND) indicating the type of service being provided, followed by the name of the station's location.
D
The location, followed by a suffix (e.g. DELIVERY) indicating the type of service being provided by that station.

A ground station's call sign comprises 2 elements in this order

The location
The type of unit or service being provided (often referred to as the call sign suffix)

For example,

Below is a list of the various suffixes:

Unit or service	Call sign suffix
Area control centre	CONTROL
Radar (in general)	RADAR
Approach control	APPROACH
Approach control radar arrivals	ARRIVAL
Approach control radar departures	DEPARTURE
Aerodrome control	TOWER
Surface movement control	GROUND
Clearance delivery	DELIVERY
Precision approach radar	PRECISION
Direction-finding station	HOMER
Flight information service	INFORMATION
Apron control	APRON
Company dispatch	DISPATCH
Aeronautical station	RADIO

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