LIST  OF  RADIO  STATION  CLASS  CODES

An  unofficial  list  for  use  by  DXers

This list is mainly derived from ITU, US NTIA & FCC and ERO documents but is a modified form for use by DXers in the classification of radio stations.


TERRESTRIAL SERVICES
AT

AMATEUR
BC

BROADCASTING
EX

EXPERIMENTAL
FL

MOBILE
FX

FIXED
RA

RADIO ASTRONOMY
RG

RADIO- DETERMINATION
SM

METEOROLOGICAL AIDS
SS

STANDARD FREQUENCY & TIME SIGNAL
ZA

SPECIAL
 SATELLITE SERVICES
EA

AMATEUR- SATELLITE
EB

BROADCASTING- SATELLITE
ET

SPACE OPERATION
EI

MOBILE- SATELLITE
EC

FIXED- SATELLITE
EH

SPACE RESEARCH
EF

RADIO- DETERMINATION- SATELLITE
EW

EARTH EXPLORATION- SATELLITE
EE

STANDARD FREQUENCY & TIME SIGNAL- SATELLITE
ME

SPECIAL (SPACE)
ES

INTER- SATELLITE


TERRESTRIAL  RADIOCOMMUNICATION  SERVICE
STATION  CLASS  CODES
Land Stations are not intended for use (to transmit) while in motion.
Mobile Stations
are used (to transmit) while in motion or during halts at unspecified points.
Repeater Stations
consist of a radio transmitter, a radio receiver, and coupling between the two so as to retransmit unchanged in intelligence the received signal. A -R suffix added to any code indicates a repeater. Some codes already contain the R Repeater suffix.

Class Code
Service Definitions / Notes
Land Mobile
 AMATEUR  SERVICE A radiocommunication service for the purpose of self-training, intercommunication and technical investigation carried out by amateurs, that is, by duly authorized persons interested in radio technique solely with a personal aim and without pecuniary interest.
AT
AMATEUR

AT-B
 
Amateur Beacon
An amateur station used as a propagation beacon.
AT-R
 
Amateur Civil Emergency
An amateur station used in the Radio Amateur Civil Emergency Service.
 BROADCASTING  SERVICE A radiocommunication service in which the transmissions are intended for direct reception by the general public. This service may include sound transmissions, television transmissions or other types of transmissions.
BC
SOUND BROADCASTING

BC-D

DAB Broadcasting
A sound broadcasting station, employing frequencies between 174 MHz and 230 MHz or 1450 MHz and 1492 MHz, whose transmissions are intended to be received directly by the general public within the frontier of a region or city.
BC-F

FM Broadcasting
A sound broadcasting station, employing frequencies between 87.5 MHz and 108.0 MHz, whose transmissions are intended to be received directly by the general public within the frontier of a region or city.
BC-FB
FM Booster
A FM broadcasting station that simultaneously rebroadcasts the signal of a primary FM broadcasting station on the same frequency.
BC-FR

FM Translator
A FM broadcasting station that simultaneously rebroadcasts the signal of a primary FM broadcasting station on a different frequency.
BC-I

International Broadcasting
A broadcasting station, employing frequencies between 5.9 MHz and 26.1 MHz, whose transmissions are intended to be received directly by the general public in foreign countries.
BC-N

National Broadcasting
A sound broadcasting station, employing frequencies between 2.3 MHz and 5.06 MHz, whose transmissions are intended to be received directly by the general public within the frontier of a country or region.
BC-S

Standard Broadcasting
A sound broadcasting station, employing frequencies between 153 kHz and 1710 kHz, whose transmissions are intended to be received directly by the general public within the frontier of a country or region.
BT

TELEVISION BROADCASTING
A broadcasting station that uses a form of telecommunication for the transmission of transient images of fixed or moving objects.
BT-R

Television Translator
A television broadcasting station that simultaneously rebroadcasts the signal of a primary television broadcasting station on a different channel.
BT-RB

Television Translator Booster
A television translator that simultaneously rebroadcasts the signal of a primary television broadcasting station on the same channel.
TS

TELEVISION (SOUND CHANNEL)

TV

TELEVISION (VISION CHANNEL)

 EXPERIMENTAL  SERVICE
A radiocommunication service utilizing radio waves in experiments with a view to development of science or technique.
EX

EXPERIMENTAL

EX-C

Experimental Contract Developmental
An experimental station used for the evaluation or testing under government contract of electronics equipment or systems in a design or development stage.
EX-D

Experimental Developmental
An experimental station used for evaluation or testing of electronics equipment or systems in a design or development stage.
EX-DA

Aviation Developmental
An experimental developmental station used for evaluation or testing of aviation electronics equipment or systems in a design or development stage.
EX-E

Experimental Export
An experimental station intended for export and used for the evaluation or testing of electronics equipment or systems in the design or development stage.
EX-M

Experimental Composite
An experimental station used in experimental operations of a complex nature not readily specified or used in an operation which is a composite of two or more of the established experimental categories.
EX-R

Experimental Research
An experimental station used in basic studies concerning scientific investigation looking toward the improvement of the art of radiocommunications.
EX-T

Experimental Testing
An experimental station used for the evaluation or testing of electronics equipment or systems, including site selection and transmission path surveys, which have been developed for operational use.
 FIXED  SERVICE A radiocommunication service between specified fixed points.
FX

FIXED

FX-B

Standard Broadcast STL
A fixed station used for relaying AM broadcast signals from the studio to the transmitter.
FX-BR

Broadband
A fixed station in a point-to-point or point-to-multipoint radio system consisting of local multipoint distribution service hub stations and their associated subscriber stations.
FX-C

Central Office Fixed
A fixed station located in a common carrier switching centre in which trunks (single transmission channels between two points that are switching centres or nodes, or both) and loops (communications channels from a switching centre or an individual message distribution point to the user terminal) are terminated and switched.
FX-CE

Digital Electronic Message Fixed
A fixed station in a two-way end-to-end service utilizing digital termination systems for the exchange of digital information.
FX-CR

Cable Antenna Relay
A fixed station used for the transmission of television and related audio signals, signals of AM and FM broadcast stations, signals of instructional television fixed stations,and cablecasting from the point of reception to a terminal point from which the signals are distributed to the public.
FX-CT

Local Television Transmission
A fixed station used for the transmission of television material and related communications to television broadcast stations, network entities, cable system operators and cable network entities.
FX-D

Telecommand Fixed
A fixed station used for terrestrial transmission of signals to initiate, modify or terminate functions of equipment at a distance.
FX-DI

Fixed Dispatch
FX-E

Telemetering Fixed
A fixed station used for telemetering.
FX-ED

Educational Broadband
A fixed station used to provide educational instruction and cultural and professional development in schools and other institutions.
FX-F

FM Broadcast STL
A fixed station used for relaying FM broadcast signals from the studio to the transmitter.
FX-G

International Fixed
A fixed station used for communications with stations in foreign countries via telegraphy, radioteletype or other digital transmissions modes.
FX-H

Hydrologic & Meteorological Fixed
A fixed station used for the automatic transmission of either hydrologic or meteorological data, or both.
FX-HP

High Altitude Platform Fixed
A fixed station using a high altitude platform.
FX-I

International Control
A fixed station that selects the master station and supervises
operational procedures, such as polling, selecting, and
recovery in communications to stations in foreign countries.
FX-IO

Inter-Office
FX-M

Aural Intercity Relay
A fixed station used for relaying sound broadcast signals between two points, such as a main studio and an auxiliary studio.
FX-MFX

Marine Operations Fixed
FX-N

Television Intercity Relay
A fixed station used for relaying television broadcast signals between two points, such as a main studio and an auxiliary studio.
FX-O

Operational Fixed
A fixed station not open to public correspondence, only for communications related to the licensee's commercial, industrial, or safety operations.
FX-P

International Fixed
A fixed station used for communications with stations in foreign countries via telegraphy, radioteletype or other digital transmissions modes.
FX-R

Rural Subscriber Fixed
A fixed station that provides telephone service to subscribers in remote areas.
FX-RP

Fixed Repeater

FX-RX

Fixed Relay
A fixed station associated with one or more stations, established to receive radio signals directed to it and to retransmit them automatically.
FX-T

Television Broadcast STL
A fixed station used for relaying television broadcast signals from the studio to the transmitter.
FX-TS

Fixed Auxiliary Test
FX-Y

Interzone Fixed

FX-Z

Zone Fixed

MX

METEOROLOGICAL INFORMATION BROADCAST
A fixed broadcasting station used for transmission of meteorological information.
PX

PRESS BROADCAST
A fixed broadcasting station used for transmission by press services.
ST

TROPOSPHERIC SCATTER FIXED
A fixed station using tropospheric scatter.
 Aeronautical  Fixed  Service
A radiocommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air transport.
AX

AERONAUTICAL FIXED
A fixed station used for provision of services related to aircraft flight safety.
AX-0

Aeronautical Operational Fixed
An aeronautical fixed station, not open to public correspondence, operated by and for the sole use of persons operating their own radiocommunication facilities in the public safety, industrial, land transportation, marine or aviation services.
 METEOROLOGICAL  AIDS  SERVICE A radiocommunication service used for meteorological, including hydrological, observations and exploration.
SM
SA
METEOROLOGICAL AID
 
SM-B
Radar Beacon Precipitation Gauge
A meteorlogical aid that is a transponder station used for telemetering.
SM-D

Meterological Radar

SM-RG
SA-R
Radiosonde Ground
A meteorological aid consisting of a ground station associated with the radiosonde.
SA-R = An automatic meteorological aid usually carried on an aircraft, free balloon, kite or parachute which transmits meteorological data.
SN

SOUNDER NETWORK
A meteorological aid in the form of an ionosphere sounder used for the realtime selection of frequencies for operational communication circuits.
SP

SOUNDER PREDICTION
A meteorological aid in the form of an ionosphere sounder for realtime monitoring of upper atmosphere phenomena or to obtain data for the prediction of propagation conditions.
 MOBILE  SERVICE A radiocommunication service between mobile and land stations, or between mobile stations.
FL
MO
LAND
 
FL-A
MO-A
Aircraft Radiotelephone Land
A land station that provides two-way voice, fax and data service to subscribers in aircraft, in-flight or on the ground.
FL-D
MO-D
Telecommand Land
A land station used for the terrestrial transmission of signals to initiate, modify or terminate functions of equipment at a distance.
FL-E
MO-E
Telemetering Land
A land station used for telemetering.
FL-EA
MO-EA
Aeronautical Telemetering Land
A telemetering land station used in the flight testing of manned or unmanned aircraft, missiles, or major components thereof. MO-EA = A telemetering mobile station used for transmitting data directly related to the airborne testing of the vehicle, (or major components), on which the station is installed.
FL-EB
MO-EB
Flight Telemetering Land
A telemetering land station used for telemetering to a balloon; to a booster or rocket, excluding a booster or rocket in orbit about the Earth or in deep space; or to an aircraft, excluding a station used in the flight testing of an aircraft.
MO-EB = A telemetering mobile station used for transmitting data from an airborne vehicle, excluding data related to airborne testing of the vehicle itself, (or major components thereof).
FL-EC
MO-EC
Surface Telemetering Land
A telemetering land station Intended to be received on the surface of the Earth.
FL-H
MO-H
Hydrologic & Meteorological Land
A land station used for the automatic transmission of either hydrologic or meteorological data, or both.
FL-L
MO-L
Cellular Radiotelephone
A land station used in a mobile radiotelephone service in which common carriers are authorized to offer and provide a mobile telecommunications service for hire to the general public using cellular systems.
FL-O
MO-O
Offshore Radiotelephone
A land station that provides telephone service to subscribers located on (or in helicopters en route to) oil exploration and production platforms.
 
MO-P
Portable Mobile
A moblie station designed to be carried by a person and capable of transmitting and/or receiving while in motion or during brief halts at unspecified locations operating in the mobile service.
 
MO-R
Mobile Repeater

FL-T

Auxiliary Test

FL-U
MO-U
Aeronautical Utility Land
A land station located at airdrome control towers and used for control of ground vehicles and aircraft on the ground at airdromes.
MO-U = A mobile station used on airports for communications relating to vehicular ground traffic.
 Aeronautical  Mobile  Service 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.
FA
MA
AERONAUTICAL
Note : In certain instances, an aeronautical station may be located, for example, on board ship or on a platform at sea.
MA = AIRCRAFT : A mobile station other than a survival craft station, located on board an aircraft.
FA-B

Aeronautical Broadcast
An aeronautical station that makes scheduled broadcasts of meteorological information and notices to airmen. (In certain instances, an aeronautical broadcast station may be placed on board a ship.)
FA-C

Airport Control Tower
An aeronautical station that provides communication between a control tower and aircraft.
FA-D
MA-D
Telecommand Aeronautical
An aeronautical station used for the terrestrial transmission of signals to initiate, modify or terminate functions of equipment at a distance.
FA-E

Aeronautical Enroute
An aeronautical station which communicates with aircraft stations in flight status or with other aeronautical enroute stations.
FA-FIS

Flight Information Services

FA-M
MA-M
Aeronautical Multicom
An aeronautical station used to provide communications to conduct the activities being performed by, or directed from, private aircraft.
FA-P
Civil Air Patrol


MA-P
Portable Aircraft
An aeronautical mobile station designed to be carried by a person in an aircraft and capable of transmitting and/or receiving while in motion or during brief halts at unspecified locations.
FA-R

Aeronautical Search & Rescue
An aeronautical station for communication with aircraft and other aeronautical search & rescue stations pertaining to search & rescue activities with aircraft.
FA-RCO

Remote Aeronautical Communications Outlet

FA-RPC

Ramp Control

FA-S

Aviation Support
An aeronautical station used to coordinate aviation services with aircraft and to communicate with aircraft engaged in unique or specialized activities.
FA-S

Aviation Instructional
An aeronautical station used for radiocommunications pertaining to instructions to students or pilots while actually operating aircraft or engaged in soaring activities.
FA-T
MA-T
Flight Test
An aeronautical station used in the testing of aircraft or their major components.
MA-T = Flight Test Aircraft : An aircraft station used in the testing of aircraft or their major components.
FA-U

Aeronautical Advisory (Unicom)
An aeronautical station used for advisory and civil defence communications primarilu with private aircraft stations.
FA-UAT

Universal Access Transceiver
An aeronautical station that is a radio datalink system authorized to operate on 978 MHz to support Automatic Dependent Surveillance Broadcast (ADS-B) Service, Traffic Information Services Broadcast (TIS-B) and Flight Information Service Broadcast (FIS-B).
FA-W

Automatic Aviation Weather Observation
An aeronautical station located at an airport and used to automatically transmit weather information to aircraft.
FG

OFF-ROUTE AERONAUTICAL
An aeronautical station intended for communications, including those relating to flight coordination, primarily outside national or international civil air routes (i.e.-military).
 Land  Mobile  Service A mobile service between base stations and land mobile stations, or between land mobile stations.
FB
ML
BASE
Note : ML capable of surface movement within the geographical limits of a country or continent.
FB-A
 
Small Base

FB-AT
 
Temporary Small Base

FB-B
 
Travelers' Information Broadcast
A base station used to transmit non-commercial voice information pertaining to traffic and road conditions, traffic hazard
and traveler advisories, directions, availability of lodging, rest stops, and service stations, and descriptions of local points of interest.
FB-BS
 
Paging Base
A base station used for one-way communications from a base station to mobile or fixed receivers that provide signaling
or information transfer by such means as tone, tone-voice, tactile, optical readout, etc.
FB-C
 ML-C
Diplomatic Corps

FB-CG
 
Private Paging Base
A base station used for paging that serves internal communications needs.
FB-CT
 
FBCT

FB-D
ML-D
Telecommand Base
A base station used for terrestrial transmission of signals to initiate, modify or terminate functions of equipment at a distance.
FB-E
 
Telemetering Base
A base station used for telemetering (for example, railroad hot box detectors).
FB-F
 ML-F
Forest Products Base
A base station used in tree logging, tree farming, or related woods operations, including related hauling activities, if
the hauling activities are performed under contract to, and exclusively for, persons engaged in woods operations or
engaged in manufacturing lumber, plywood, hardboard, or pulp and paper products from wood fibre.
FB-G
ML-G
Military Base
A base station mainly for internal military use.
FB-GS
 
Ground

FB-I
 
Itinerant Base

FB-IB
 ML-IB
Business Base
A base station used by private investigators, alarm services, school security, philanthropic groups, etc.
FB-IS
ML-IS
Special Industrial Base
A base station used in the operation of farms, ranches, or similar land areas; plowing, soil conditioning, seeding,
fertilizing, or harvesting for agricultural activities; spraying or dusting of insecticides, herbicides, or fungicides, in areas other than enclosed structures; livestock breeding service; the operation of a commercial business regularly engaged in the construction of roads, bridges, sewer systems, pipelines, airfields, or water, oil, gas, or power production, collection, or
distribution systems, excluding buildings; the operation of mines for the recovery of solid fuels, minerals, metal, rock, sand and gravel from the earth or the sea, including the exploration for
and development of mining properties; the maintaining, patrolling or repairing gas or liquid transmission pipelines, tank cars, water or waste disposal wells, industrial storage tanks, or distribution systems of public utilities; acidizing, cementing, logging,
perforating, or shooting activities, and  services of a similar nature incident to the drilling of new oil or gas wells, or the maintenance of production from established wells; supplying chemicals, mud, tools, pipe, and other materials or equipment
unique to the petroleum and gas production industry; the delivery of ice or fuel to the consumer for heating, lighting, refrigeration
or power generation purposes, by means other than pipelines or railroads; the delivery and pouring of ready mixed concrete or hot asphalt mix.
FB-M

Base & Mobile

FB-P
 ML-IP
Petroleum Base
A base station used in prospecting for, producing, collecting, refining, or transporting by means of pipeline, petroleum or petroleum products (including natural gas).
 
ML-P
Portable Land Mobile
A mobile station designed to be carried by a person and capable of transmitting and/or receiving while in motion or during brief halts at unspecified locations.
FB-R
ML-R
Remote Pickup Base

FB-RT
ML-RT
Mobile Radiotelephone Base
A base station that uses a combination of radio transmission and conventional telephone switching to permit telephone communication to and from mobile users within a specified area.
FB-S ML-S
Shipyard Base

  ML-SB
Mobile Subscriber

FB-SI
 
Air/Ground Signalling Base
A base station used for one-way communications to a mobile or fixed receiver, or to multi-point mobile or fixed receivers by audible or subaudible means, for the purpose of actuating a signaling device in the receiver(s) or communicating information to the receiver(s), whether or not the information is to retained in record form.
FB-ST
 
Standby Base

FB-T
 ML-IT
Telephone Maintenance Base
A base station used by communications common carriers engaged in the provision of landline local exchange telephone service, or inter-exchange communications service.
 
ML-T
TV Remote Pickup Mobile
A mobile station used for television pickups which relay signals from a remote location, back to the studio.
FB-V
ML-V
Film & Video Production Base
A base station used for direct technical support to the
production, videotaping, or filming of motion pictures or television programs, such as movies, programs, news programs, special events, educational programs, or training films, regardless
of whether the productions are prepared primarily for final exhibition at theatrical outlets or on television or for distribution through other mass communications outlets.
FB-W
 ML-W
Power Base
A base station used in the generation, collection, purification, storage, transmission or distribution of electrical energy, natural gas by means of pipeline, steam by means of pipeline or, of water by means of pipeline, canal, or open ditch, or the providing of a supporting service.
FB-X
ML-X Manufacturers Base
A base station used in manufacturing activities including the mechanical or chemical transformation of substances into new
products, the assembly of components of manufactured products, or the providing of supporting services or materials.
FB-Y
ML-Y
Relay Press Base
A base station used in the publication of a newspaper or in the operation of an established press association.
YI
 
TRUNKED INDUSTRIAL/BUSINESS NETWORK
A land station with multiple users on a shared network of frequencies with a digital control channel.
 Dispatch  ServiceA land mobile service comprising communications between a dispatcher and one or more mobile units. These communications normally do not exceed one minute in duration and are transmitted directly through a base station, without passing through mobile telephone switching facilities.
FD
MT
DISPATCH

FD-A
 MT-A
Automobile Emergency Dispatch
A dispatch station for dispatching repair trucks, tow trucks, or other road service vehicles to disabled vehicles.
FD-D
MT-D
Mountain Railroad Dispatch
A dispatch station used by railroad common carriers which are regularly engaged in the transportation of passengers or
property when such passengers or property are transported over all or part of their route by mountain railroad.
FD-I
 MT-I
Intercity Passenger Motor Carrier Dispatch
A dispatch station used in providing a common or contract motor carrier transportation service for passengers between urban areas.
FD-J
MT-J
Intercity Property Motor Carrier Dispatch
A dispatch station used in providing a common or contract motor carrier transportation service for property between urban areas.
FD-R
MT-R
Railroad Dispatch
A dispatch station used by railroad common carriers which are regularly engaged in the transportation of passengers or
property when such passengers or property are transported over all or part of their route by railroad, excluding mountain railroads.
FD-U
 MT-U
Urban Passenger Motor Carrier Dispatch
A dispatch station used in providing a common or contract motor carrier transportation service for passengers within a single urban area.
FD-V
MT-V
Urban Property Motor Carrier Dispatch
A dispatch station used in providing a common or contract motor carrier transportation service for the transportation, local distribution or collection of property within a single urban area.
FD-X
MT-X Taxicab Dispatch
A dispatch station used in furnishing to the public for hire a nonscheduled passenger land transportation service (which may also include the occasional transport of small items of property) not operated over a regular route or between established terminals.
YL  
TRUNKED LAND TRANSPORTATION NETWORK
A land station with multiple users on a shared network of frequencies with a digital control channel.
 Maritime  Mobile  Service A mobile service between coast stations and ship stations, or between ship stations, or between associated on-board communication stations; survival craft stations and emergency position-indicating radiobeacon stations may also participate in this service.
FC
MS
COAST
MS = SHIP : A mobile station located on board a vessel which is not permanently moored, other than a survival craft station.
FC-A
 
Maritime Support
A coast station used in support of the maritime services to train personnel and to demonstrate, test and maintain equipment.
FC-B

Marine Broadcast
A coast station that makes scheduled broadcasts of time, meteorological, and hydrographic information.
FC-D
MS-D
Telecommand Coast
A coast station used for terrestrial transmission of signals to initiate, modify or terminate functions of equipment at a distance.
FC-L

Limited Coast Edition

FC-MRT

Marine Receiver Test


MS-P
Portable Ship
A ship station which includes a single transmitter intended
for use upon two or more ships.
FC-S

Shipboard Coast

FC-U

Marine Utility Coast

FC-X

Coast & Fixed


CA
CARGO SHIP
Any ship that is not a passenger ship.

FV
FISHING FLEET SHIP


GV
OFFICIAL SERVICE SHIP


MM
MERCHANT SHIP


NF
RIVER VESSEL


NS
NAVAL/MILITARY SHIP


PL
PLEASURE SHIP


SV
RESCUE VESSEL

NA

NOTICES TO NAVIGATORS BROADCAST

OE
OD
OCEANOGRAPHIC DATA INTERROGATING
A coast station used to initiate, modify, or terminate functions of equipment directly associated with an oceanographic data station, including the station itself.
OD = A mobile station located on a ship, buoy or other sensor platform the emissions of which are used for the transmission of oceanographic data.
 Port  Operations  ServiceA maritime mobile service in or near a port, between coast stations and ship stations, or between ship stations, in which messages are restricted to those relating to the operational handling, the movement and the safety of ships and, in emergency, to the safety of persons. Messages which are of a public correspondence nature shall be excluded from this service.
 FP
 
PORT

 FW
 
PORT & SHIP MOVEMENT
A coast station that serves both as a port operations and a ship movement service station.
 Ship  Movement  ServiceA safety service in the maritime mobile service other than a port operations service, between coast stations and ship stations, or between ship stations, in which messages are restricted to those relating to the movement of ships. Messages which are of a public correspondence nature shall be excluded from this service.
 FT
 
SHIP MOVEMENT

 Safety ServiceA mobile service used permanently or temporarily for the safeguarding of human life and property.
FS
  MP
SAFETY OF LIFE
A land station established solely for the safety of life.
FS-F
MP-F
Fire Base
A safety of life station used for official fire protection activities.
FS-H
MP-H
Highway Maintenance Base
A safety of life station used for street & road repair including highway patrol units.
FS-L
MP-L
Local Government Base
A safety of life station used for other city and county services.
FS-M
MP-M
Emergency Medical Base
A safety of life station used in the provision of basic or advanced life support services on an ongoing basis or essential for the delivery or rendition of emergency medical services for the provision of basic or advanced life support.
FS-O
MP-O
Forestry Conservation Base
A safety of life station used for forestry conservation & firefighting, parks, fish & game wardens, etc.
FS-P
MP-P
Police Base
A safety of life station used by a government entity or institution, authorized by law to provide police protection, for official police activities.
FS-S
MP-S
Special Emergency Base
A safety of life station used for ambulance, paramedics, doctors and water & mountain rescue.
FS-SAR
MP-SAR
Search & Rescue

MD

MEDICAL ADVICE BROADCAST

YP
 
TRUNKED PUBLIC SAFETY NETWORK
A land station with multiple users on a shared network of frequencies with a digital control channel.
 RADIO  ASTRONOMY  SERVICE A service involving the use of astronomy based on the reception of radio waves of cosmic origin.
RA

RADIO ASTRONOMY
Note : This is always a receiving station.
 RADIODETERMINATION  SERVICEA radiocommunication service for the purpose of 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.
-

RADIODETERMINATION

RG

RADIO DIRECTION-FINDING
A radiodetermination station using the reception of radio waves for the purpose of determining the direction of a station or object.
 Radiolocation  ServiceA radiodetermination service for the purposes other than those of radionavigation.
LR
MR
RADIOLOCATION LAND
 
 
MR-B
Radio Beacon Mobile
A mobile station the emissions of which are used to determine its location.

MR-P
Radiolocation Portable
A mobile station designed to be carried by a person and capable of transmitting and/or receiving while in motion or during brief halts at unspecified locations operating in the radiolocation service.

MR-T
ELT Test

LR-X

Shore Radiolocation Test

 Radionavigation  ServiceA radiodetermination service for the purpose of navigation, including obstruction warning.
RC
 
NON-DIRECTIONAL RADIOBEACON

RD
 
DIRECTIONAL RADIOBEACON
 
RN
NR
RADIONAVIGATION LAND
 
RN-DGP
 
Differential GPS (Radiobeacon)
A radionavigation station using differential RNSS for specific augmentation of GPS.
RN-L

LORAN
A radionavigation station that transmits synchronized pulses over long distances. Hyperbolic lines of position are determined by the measurement of the difference in the time of arrival of these pulses.
RT
 
REVOLVING RADIOBEACON
 
 Aeronautical  Radionavigation  ServiceA radionavigation service intended for the benefit and for the safe operation of aircraft.
AL
AM
AERONAUTICAL RADIONAVIGATION LAND
 
AL-A
 
Aeronautical Marker Beacon
An aeronautical radionavigation station that radiates vertically a distinctive pattern for providing position information to aircraft.
 
 AM-A
Radio Altimeter
Mobile radionavigation equipment, on board an aircraft or spacecraft, used to determine the height of the aircraft or the spacecraft above the Earth's surface or another surface.
AL-B

Aeronautical Radiobeacon
An aeronautical radionavigation station intended to enable aircraft to determine its bearing or direction in relation to the radiobeacon station.
AL-C

Aeronautical Racon (Radar Beacon)
An aeronautical radionavigation station that is a transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the triggering radar, providing range, bearing and identification information.
AL-D

Radar
An aeronautical radionavigation station using a radiotermination system based on the comparison of reference signals with radio signals reflected from the position to be determined.
AL-G

ILS (Instrument Landing System) Glide Path
An aeronautical radionavigation station using a system of vertical guidance embodied in the ILS which indicates the vertical deviation of the aircraft from its optimum path of descent.
AL-L

ILS (Instrument Landing System)  Localizer
An aeronautical radionavigation station using a system of horizontal guidance embodied in the ILS which indicates the horizontal deviation of the aircraft from its optimum path of descent along the axis of the runway.
AL-O

VOR (Omni Directional Range)
An aeronautical radionavigation station providing direct indication of the bearing (omnibearing) of that station from an aircraft.
AL-R

Radio Range
An aeronautical radionavigation station providing radial equisignal zones. (In certain instances a radio range station may be placed on board a ship.)
AL-S

Surveillance Radar
An aeronautical radionavigation station employing radar to display the presence of aircraft within its range. (In certain instances, a surveillance radar station may be placed on board a ship.)
AL-T

Aeronautical Radionavigation Land Test
An aeronautical radionavigation station used as a calibration station for the transmission of essential information in connection with the testing and calibration of aircraft navigational aids, receiving equipment and interrogators at predetermined surface locations.
AL-TM

Aeronautical Radionavigation Land Test (Maintenance)
An aeronautical radionavigation land test station that is a maintenance test facility used as a calibration station for the transmission of essential information in connection with the testing and calibration of aircraft navigational aids, receiving equipment and interrogators at predetermined surface locations. The primary purpose of this facility is to permit maintenance testing by aircraft radio service personnel.
AL-TO

Aeronautical Radionavigation Land Test (Operational) An aeronautical radionavigation land test station that is an operational test facility used as a calibration station for the transmission of essential information in connection with the testing and calibration of aircraft navigational aids, receiving equipment and interrogators at predetermined surface locations. The primary purpose of this facility is to permit the pilot to check a radionavigation system aboard the aircraft prior to takeoff.
AL-V

DME (Distance Measuring Equipment)

AL-W

MLS (Microwave Landing System)
An aeronautical radionavigation station that is an instrument landing system operating in the microwave spectrum that provides lateral and vertical guidance to aircraft having compatible avionics equipment.
 Maritime  Radionavigation  ServiceA radionavigation service intended for the benefit and for the safe operation of ships.
NL
RM MARITIME RADIONAVIGATION LAND

NL-C

Marine Racon (Radar Beacon)
A maritime radionavigation station that is a transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the triggering radar, providing range, bearing and identification information operating in the maritime radionavigation service.
 
RM-D
Ship Radar

 NL-DC
Shore Radar Test

NL-M

Marine Radiobeacon
A maritime radionavigation station intended to enable ships to determine its bearing or direction in relation to the radiobeacon station.
NL-R
Shore Radionavigation
 SPECIAL  SERVICE
A radiocommunication service, not otherwise defined in this Section, carried on exclusively for specific needs of general utility, and not open to public correspondence.
FR

RECEIVING
Receiving station only, connected with the general network of telecommunication channels.
ISM

ISM Equipment
Equipment or applicances designed to generate and use locally radio-frequency energy for industrial, scientific, medical, domestic or similar purposes, excluding applications in the field of telecommunications.
PL

COMBINATION
A station that is a combination of two or more classes of station.
ZA

GENERAL MOBILE RADIO
A station used for the activities of an individual's intermediate family members.
ZC

RADIO CONTROL
A station used for one-way, short-distance, non-voice radio service for on/off operation of devices at places distant from the operator.
ZD

CITIZENS' BAND
A station for use in personal and business activities.
ZV

INTERACTIVE VIDEO & DATA
A station used in a short-distance service designed for transmitting information, product, and service offerings to subscribers and receive interactive responses.
 STANDARD  FREQUENCY  &  TIME  SIGNAL  SERVICEA radiocommunication service for scientific, technical and other purposes, providing the transmission of specified frequencies, time signals, or both, of stated high precision, intended for general reception.
SS

STANDARD FREQUENCY & TIME SIGNAL


SPACE  RADIOCOMMUNICATION  SERVICE
RADIO  STATION  CLASS  CODES
Earth Stations are located either on the Earth's surface or within the major portion of the Earth's atmosphere and intended for communication with one or more space stations; or with one or more stations of the same kind by means of one or more reflecting satellites or other objects in space.
Mobile Earth Stations
are located either on the Earth's surface or within the major portion of the Earth's atmosphere and intended for communication with one or more space stations; or with one or more stations of the same kind by means of one or more reflecting satellites or other objects in space; while in motion or during halts at unspecified points.
Space Stations are located on an object which is beyond, is intended to go beyond, or has been beyond, the major portion of the Earth's atmosphere.

Earth Mobile Earth
Space Class of Station
Definitions / Notes
 AMATEUR-SATELLITE  SERVICE A radiocommunication service using space stations on earth satellites for the purpose of self-training, intercommunication and technical investigation carried out by amateurs, that is, by duly authorized persons interested in radio technique solely with a personal aim and without pecuniary interest.
 TA
 EA AMATEUR-SATELLITE

 BROADCASTING-SATELLITE  SERVICE A radiocommunication service in which signals transmitted or retransmitted by space stations are intended for direct reception by the general public. In the broadcasting-satellite service, the term “direct reception” shall encompass both individual reception (by simple domestic installations and in particular those possessing small antennae) and community reception (by receiving equipment, which in some cases may be complex and have antennae larger than those used for individual reception, and intended for use: by a group of the general public at one location; or through a distribution system covering a limited area).
 
EB SOUND BROADCASTING-SATELLITE

 

EV
TELEVISION BROADCASTING-SATELLITE

 EARTH  EXPLORATION-SATELLITE  SERVICEA radiocommunication service between earth stations and one or more space stations, which may include links between space stations, in which information relating to the characteristics of the Earth and its natural phenomena including data relating to the state of the environment is obtained from active sensors or passive sensors on earth satellites; similar information is collected from airborne or earth-based platforms; such information may be distributed to earth stations within the system concerned;  platform interrogation may be included. This service may also include feeder links necessary for its operation.
TW

EW
EARTH EXPLORATION-SATELLITE

 Meteorological-Satellite  ServiceAn Earth exploration-satellite service for meteorological purposes.
TM

EM
METEOROLOGICAL-SATELLITE

 FIXED-SATELLITE  SERVICE A radiocommunication service between earth stations at given positions when one or more satellites are used; the given position may be a specified fixed point or any fixed point within specified areas; in some cases this service includes satellite-to-satellite links, which may also be operated in the inter-satellite service, the fixed-satellite service may also include feeder links for other space radiocommunication services.
TC

EC
FIXED-SATELLITE

TB


SATELLITE AERONAUTICAL EARTH
An earth station located at a specified fixed point on land to provide a feeder link for the aeronautical mobile-satellite service.
TI


SATELLITE COAST EARTH
An earth station located at a specified fixed point on land to provide a feeder link for the maritime mobile-satellite service.
TY


SATELLITE BASE EARTH
An earth station located at a specified point or within a specified area on land to provide a feeder link for the land mobile-satellite service.
VA


SATELLITE LAND EARTH
An earth station located at a specified point or within a specified area on land to provide a feeder link for the mobile-satellite service.
 INTER-SATELLITE  SERVICE A radiocommunication service providing links between artificial earth satellites.
 
 
ES
INTER-SATELLITE
 
 MOBILE-SATELLITE  SERVICE A radiocommunication service: between mobile earth stations and one or more space stations, or between space stations used by this service; or between mobile earth stations by means of one or more space stations. This service may also include feeder links necessary for its operation.
 
 
EI
MOBILE-SATELLITE
 
TE
 
 
SATELLITE EPIRB
An earth station intended to facilitate search and rescue operations.
[ VA ]
UA
 
SATELLITE LAND

 Aeronautical  Mobile-Satellite  Service A mobile-satellite 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.
[ TB ]
TJ
EJ
AERONAUTICAL MOBILE-SATELLITE
TJ = AIRCRAFT EARTH (AES) :
 Land  Mobile-Satellite  Service A mobile-satellite service in which mobile earth stations are located on land.
[ TY ]
TU
EU
LAND MOBILE-SATELLITE
TU = MOBILE EARTH :
 Maritime  Mobile-Satellite  Service A mobile-satellite service in which mobile earth stations are located on board ships; survival craft stations and emergency position-indicating radiobeacon stations may also participate in this service.
[ TI ]
TG
EG
MARITIME MOBILE-SATELLITE
TG = SHIP EARTH :
 RADIODETERMINATION-SATELLITE  SERVICEA radiocommunication service for the purpose of radiodetermination involving the use of one or more space stations. This service may also include feeder links necessary for its own operation.
TF
TL
EF
RADIODETERMINATION-SATELLITE

 
 
DG
DIFFERENTIAL GLOBAL POSITIONING SYSTEM
A radiodetermination-satellite used for the transmission of differential correction data and related information (such as ionospheric data and RNSS satellite integrity information) as an augmentation to an RNSS system for the purpose of improved navigation accuracy.
 Radiolocation-Satellite  ServiceA radiodetermination-satellite service used for the purpose of radiolocation. This service may also include the feeder links necessary for its operation.
 
 
 -
RADIOLOCATION-SATELLITE
 
 Radionavigation-Satellite  ServiceA radiodetermination-satellite service used for the purpose of radionavigation. This service may also include feeder links necessary for its operation.
TN
UM
EN
RADIONAVIGATION-SATELLITE
 
 Aeronautical  Radionavigation-Satellite  ServiceA radionavigation-satellite service in which earth stations are located on board aircraft.
TZ
TO
EO
AERONAUTICAL RADIONAVIGATION-SATELLITE
 
 Maritime  Radionavigation-Satellite  ServiceA radionavigation-satellite service in which earth stations are located on board ships.
TX
TQ
EQ
MARITIME RADIONAVIGATION-SATELLITE

 SPACE  OPERATION  SERVICEA radiocommunication service concerned exclusively with the operation of spacecraft, in particular space tracking, space telemetry and space telecommand. These functions will normally be provided within the service in which the space station is operating.
TT
 
ET
SPACE OPERATION

 SPACE  RESEARCH  SERVICEA radiocommunication service in which spacecraft or other objects in space are used for scientific or technological research purposes.
TH
 
EH
SPACE RESEARCH

 SPECIAL  SERVICE  (SPACE)
A radiocommunication service, not otherwise defined in this Section, carried on exclusively for specific needs of general utility, and not open to public correspondence.
 

ME
SPACE
A mobile station located on an object which is beyond, is intended to go beyond, or has been beyond, the major portion of the Earth's atmosphere.
TP


SPACE RECEIVING
Receiving station only, connected with the general network of telecommunication channels.
 Space Telecommand
The use of radiocommunication for the transmission of signals to a space station to initiate, modify or terminate functions of equipment on an associated space object, including the space station.
TD

ED
SPACE TELECOMMAND
Codes can also be used as a suffix.
 Space Telemetry
The use of telemetry for the transmission from a space station of results of measurements made in a spacecraft, including those relating to the functioning of the spacecraft.
TR

ER
SPACE TELEMETERING
Codes can also be used as a suffix.
 Space Tracking
Determination of the orbit, velocity or instantaneous position of an object in space by means of radiodetermination, excluding primary radar, for the purpose of following the movement of the object.
TK

EK
SPACE TRACKING
Codes can also be used as a suffix.
 STANDARD  FREQUENCY  &  TIME  SIGNAL-SATELLITE  SERVICEA radiocommunication service using space stations on earth satellites for scientific, technical and other purposes, providing the transmission of specified frequencies, time signals, or both, of stated high precision, intended for general reception. This service may also include feeder links necessary for its operation.


EE
STANDARD FREQUENCY-SATELLITE



EY TIME SIGNAL-SATELLITE


 Record of Changes
2010-11-05 
 FX-IF Instructional Television Fixed changed to FX-ED Educational Broadband
 FX-MD Multipoint Distribution changed to FX-BR Broadband

Maintained by William R. Hepburn. This list is in no way is meant to represent official usage.