Key:seamark:radio_station:category

Categories of radio station (CATROS).

values

Category (CATROS)	seamark:radio_station:category	Definition	Rendering
Physical AIS	ais	An AIS radiobeacon on a seamark that reports its own position
Circular (non-directional) marine or aero-marine radiobeacon	omnidirectional	A radio station which need not necessarily be manned, the emissions of which, radiated around the horizon, enable its bearing to be determined by means of the radio direction finder of a ship.
Directional radiobeacon	directional	A special type of radiobeacon station, the emissions of which are intended to provide a definite track for guidance.
Rotating pattern radiobeacon	rotating_pattern	A special type of radiobeacon station emitting a beam of waves to which a uniform turning movement is given, the bearing of the station being determined by means of an ordinary listening receiver and a stop watch. Also referred to as a rotating loop radiobeacon.
Consol beacon	consol	A type of long range position fixing beacon.
Radio direction-finding station	rdf	A radio station intended to determine only the direction of other stations by means of transmission from the latter.
Coast radio station providing QTG service	qtg	A radio station which is prepared to provide QTG service, that is to say, to transmit upon request from a ship, a radio signal, the bearing of which can be taken by that ship.
Aeronautical radiobeacon	aeronautical	A radio beacon designed for aeronautical use.
Decca	decca	The Decca Navigator System is a high accuracy, short to medium range radio navigational aid intended for coastal and landfall navigation.
Loran C	loran	Loran-C is a low frequency electronic position fixing system using pulsed transmissions at 100 Khz.
Differential GPS	dgps	A radiobeacon transmitting DGPS correction signals.
Toran	toran	Toran is an electronic position fixing system used mainly by aircraft.
Omega	omega	Omega is a long-range radio navigational aid which operates within the VLF frequency band. The system comprises eight land based stations.
Syledis	syledis	Syledis is a ranging position fixing system operating at 420-450 MHz over a range of up to 400 km.
Chiaka (Chayka)	chiaka	Chiaka is a low frequency electronic position fixing system using pulsed transmissions at 100 kHz.
Public communication (for conversations)	public_communication	Public communication (for conversations)
Commercial broadcast	commercial_broadcast	Commercial broadcast.
Facsimile transmission	facsimile	Facsimile transmission.
Time signal	time_signal	Time signal.
AIS base station	ais_base	An onshore AIS unit that monitors traffic in the waterways.