LIST  OF  RADIO  STATION  CLASS  CODES

An  unofficial  list  for  use  by  DXers
for stations operating below 2 GHz

This list is based on codes used by the ITU, US NTIA & FCC 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
RG

RADIO- DETERMINATION
SM

METEOROLOGICAL AIDS
SS

SPECIAL
 SPACE SERVICES
EA

AMATEUR- SATELLITE
ET

SPACE OPERATION
EH

SPACE RESEARCH
EI

MOBILE- SATELLITE
ES

INTER- SATELLITE
EF

RADIO- DETERMINATION- SATELLITE
EW

EARTH EXPLORATION- SATELLITE
EE

SPECIAL SPACE
RECEIVING STATIONS
RX

RA

RADIO ASTRONOMY

 TERRESTRIAL  RADIOCOMMUNICATION  SERVICES
 
STATION  CLASS  CODES
Land Stations are not intended for use for transmissions while in motion.

Mobile Stations are used for transmissions while in motion or during halts at unspecified points.

Multiplex Stations are stations that transmit two or more different transmissions simutaneously by the use of digital multiplexing, subcarriers or independent sidebands (excluding stereo stations or parallel streams of the same transmission - one analogue and one digital). A + suffix may be added to any code to indicate that it is a multiplex (examples : BC+, BT+, FCO+, etc.).

Subchannel Stations and Subsidiary Communication Stations are secondary stations that are part of a multiplex station. A + prefix may be added to any code to indicate that it is a subchannel or subsidiary communication (examples : +BC, +BT, +HR, +FXP, etc.)

High Altitude Platform Stations
are stations located on an object at an altitude of 20-50 km at a specified nominal fixed point relative to Earth. An HP suffix added to any code indicates that it is a high altitude platform station.


Experimental Stations utilize radio waves in experiments with a view to development of science, equipment or technique. An EX prefix added to any code (except those of the amateur service) indicates that it is an experimental station. Experimental is also a specific service.

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  AR AMATEUR
A station 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.
 AB
 
AMATEUR BEACON An amateur station that transmits communications for the purpose of propagation observations and reception or other related experimental activities.
 BROADCASTING SERVICE A radiocommunication service in which the transmissions are intended for direct reception by the general public within an allocated broadcasting band such as LW, MW (AM), SW, FM (USW), DAB (DR) or TV. This service may include sound, television or other types of transmissions.
 -
BROADCASTING
A station whose transmissions are intended for direct reception by the general public.
 BC
SOUND (RADIO) BROADCASTING
A broadcasting station that transmits speech or music.
 BCA
Airport Information Radio A sound broadcasting station used to transmit airport information exclusively.
 BCE
Emergency Advisory Radio A sound broadcasting station used to transmit emergency advisory information exclusively.
 BCH
Highway Advisory Radio (HAR) A sound broadcasting station used to transmit highway advisory information exclusively.
 BCM
Weather Radio A sound broadcasting station used to transmit weather information exclusively.
 BCO
Park Information Radio A sound broadcasting station used to transmit park (or other conservation area) information exclusively.
 BCT
Travellers' Information Radio (TIS) A sound broadcasting station used to transmit community or tourist information exclusively.
 BT

TELEVISION BROADCASTING (TV)
A broadcasting station that transmits transient images of fixed or moving objects.
 TS

TV Sound Broadcasting
A television broadcasting station that acts and identifies as a de facto sound broadcasting station.
 EXPERIMENTAL SERVICE A radiocommunication service utilizing radio waves in experiments with a view to development of science or technique (excluding the amateur service AT).
 EX
 EX
EXPERIMENTAL
A station utilizing radio waves in experiments with a view to development of science, equipment or technique.



See EX note for more options.
 FIXED SERVICE A radiocommunication service between specified fixed points (excluding special services SP and meteorological aids SM).
 FX

FIXED
A station not capable of moving that communicates with one or more stations similarly established.
 FX

Operational Fixed A fixed station, not open to public correspondence, operated by entities that provide their own radiocommunication facilities.
 FXC

Telecommand Fixed A fixed station used for the transmission of signals to initiate, modify or terminate functions of equipment at a distance (such as Automated Meter Infrastructure).
 FXI

International Fixed An operational fixed station that communicates with similar stations in foreign countries.
 FXM

Telemetering Fixed A fixed station used for telemetering (such as Automated Meter Reading).
 FXP
 
Paging A fixed station used for one-way communications to mobile or fixed receivers that provide signaling or information transfer by such means as tone, tone-voice, tactile, optical readout, etc.
 FXR

Radiotelephone Fixed A fixed station open to public correspondance or provides telecommunication (including broadband) services to remote or rural subscribers where it is not feasible to provide them by wire or other means.
 FXS

Sounder Network
A fixed station in the form of an ionosphere sounder used for the realtime selection of frequencies for operational communication circuits.
 BL

LOCAL BROADCAST LINK A fixed station used as a link for providing a local broadcast, not intended for direct reception by the general public, to one or more specific locations, such as military bases, universities, hospitals, retail stores, churches, etc.
 CX

COAST FIXED A fixed station used for the provision of services related to ship movement safety.
 PI
 
INTERRUPTIBLE FEEDBACK (IFB)
A fixed station used as a monitoring and cueing system in remote broadcasting or video production.
 RP
 
REMOTE BROADCAST PICKUP (RPU)
A fixed station used for remote pickup broadcast operation at a specified location.
 ST

STUDIO-TRANSMITTER LINK (STL) A fixed station used for the transmission of program material between the studio and the transmitter(s) of a broadcasting station (including intercity relays and transmitter-studio links).
 STW

Weather Radio STL A studio-transmitter link used by a weather radio station.



See SP for special stations providing meteorological information or press broadcasts.
 Aeronautical Fixed Service
A fixed service 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 the provision of services related to aircraft flight safety.
 METEOROLOGICAL AIDS SERVICE A radiocommunication service used for meteorological (including hydrological) observations and Earth exploration.
(Note : the ITU allocates many SM stations to operate in bands allocated to other services. For these stations, their official class code may differ from SM).
 SM
 SA
METEOROLOGICAL AID
A station that performs meteorological (including hydrological) observations or exploration.
 SM
 
Meteorological Observing A meteorological aid station the emissions of which are used for the automatic transmission of meteorological and/or hydrologic data.
 SMR
 
Radiosonde Ground A meteorological aid station consisting of a ground station associated with the radiosonde.
SA (RADIOSONDE) : A meteorological aid that is a probe usually carried on a free balloon, parachute, kite or aircraft which automatically transmits meteorological data.
 SMW
 
Wind Profiler A meteorological aid station that uses radar or sonar to measure the wind velocity at various elevations above the ground.
 OE
 OD
OCEANOGRAPHIC DATA
A meteorological aid station which uses radar to measure surface currents on the ocean, or whose emissions are used to telecommand an oceanographic data station located on a ship, buoy or other sensor platform.
MOBILE SERVICE A radiocommunication service between mobile and land stations, or between mobile stations (excluding special services SP).
 FL
 MO
LAND
A station not capable of moving that primarily communicates with mobile stations.
MO (MOBILE) : A station capable of moving, which is usually moving.
 FLR
 
Mobile Radiotelephone A land station that uses a combination of radio transmission and telephone switching to permit telecommunications to and from mobile users within a specified area.
 RPM
 
Mobile Remote Broadcast Pickup A land station used for mobile remote pickup broadcast operation (including traffic reports from helicopters).
 Aeronautical Mobile Service A mobile service between aeronautical stations and aircraft stations, or between aircraft stations.
 FA
 MA
AERONAUTICAL
A land station that primarily communicates with aircraft.
MA (AIRCRAFT) : A mobile station located on board an aircraft.
 FA

Aeronautical Enroute An aeronautical station which communicates with aircraft in flight or with other aeronautical enroute stations.
 FAB

Aeronautical Universal Access (UAT) An aeronautical station that uses a datalink system to provide automatic dependent surveillance, traffic information services, and flight information service broadcasts.
 FAF

Aeronautical Fire An aeronautical station used for communications pertaining to forest fire management.
 FAR

Air-Ground Radiotelephone An aeronautical station that provides telecommunications services to subscribers in aircraft.
 FAS

Air Ambulance An aeronautical station used in the provision of air ambulance services.
 FAT

Aerodrome Control An aeronautical station that provides control or advisory communications with aircraft arriving or departing a civilian aerodrome or on the ground.
 FAU

General Aviation An aeronautical station, not open to public correspondence, operated by general aviation companies.
 FD

AERONAUTICAL OPERATIONAL CONTROL An aeronautical station, not open to public correspondence, operated by airlines to communicate with their fleet of aircraft.
 FG
 
AERONAUTICAL MILITARY
An aeronautical station intended for communications primarily outside of civil air routes.
 FGE

Aeronautical Search & Rescue (SAR) An aeronautical military station used for communications pertaining to search and rescue activities.
 FGO

Aeronautical Military Operations An aeronautical military station used to communicate with aircraft during military operations.
 FGR
 
Range Control An aeronautical miitary station used to communicate with helicopters at an army (or other military) range.
 FGT

Military Aerodrome Control An aeronautical military station that provides control or advisory communications with aircraft arriving or departing a military aerodrome or on the ground.
 Land Mobile Service A mobile service between base stations and land mobile stations, or between land mobile stations.
 FB
 ML
BASE
A land station that primarily communicates with land mobile stations.
ML (LAND MOBILE) : A mobile station capable of surface movement within the geographical limits of a country or continent.
 FBA
 
Agriculture Base A base station used in agricultural activities.
 FBB
 
Business Base A base station used by a small business, philanthropic group, etc.
 FBE
 
Automobile Emergency A base station used for dispatching repair trucks, tow trucks, or other road service vehicles to disabled vehicles.
 FBF
 
Forestry Operations Base A base station used in forestry operations and/or the manufacturing of forest products.
 FBG
   Government Base A base station used for non-public safety government activities.
 FBI
 
Intercity Bus Dispatch A base station used in intercity bus transportation services.
 FBJ
 
Highway Truck Dispatch A base station used in highway truck transportation services.
 FBM
  Manufacturers Base A base station used in general manufacturing activities.
 FBO
 
Petroleum Base A base station used in the extraction, production, and/or transporting via pipeline of petroleum products (including natural gas).
 FBP
 
Press Base A base station used in newspaper and press activities.
 FBR
 
Range Control A base station used for the ground control of army (or other military) ranges.
 FBS
 
Special Industrial Base A base station used in mining, construction, fuel or ice delivery, or other industrial activities.
 FBT
 
Telecom Maintenance Base A base station used in the provision and maintenance of telephone or internet service.
 FBV
 
Video Production Base A base station used in the production of motion pictures, television programs, or other videos.
 FBW
 
Power Base A base station used in the generation and/or transmission of hydro power (electrical, steam or water) or the distribution of natural gas to the general public.
 FBX
   Taxicab Dispatch A base station used in the provision of taxicab transportation services.
 CC
 
LAND MOBILE COMMON CARRIER
A base station with multiple land mobile users on a shared frequency using selective calling techniques.
 YB
 
TRUNKED LAND MOBILE NETWORK
A base station with multiple land mobile users on a shared network of frequencies with a digital control channel.
Railroad ServiceA land mobile service between railway stations and trains, or between trains.
 FR
 MT
RAILWAY  A base station that primarily communicates with trains (excluding subway, streetcar and light rail trains).
 HB
 
HOT BOX DETECTOR (HBD) A railway station used to detect axle and signal problems in passing trains and to broadcast that information using voice telemetery.
 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
A land station that primarily communicates with ships (including submarines).
MS (SHIP) : A mobile station located on board a vessel which is not permanently moored, other than a survival craft station or dedicated rescue vessel.
 FC

Public Coast A coast station open to public correspondance.
 FCR

Maritime Radiotelephone A coast station that provides telecommunications services to subscribers on ships.
 FCV

Private Coast A coast station, not open to public correspondence, operated by private agencies to communicate with their ships.
 AI

AUTOMATIC IDENTIFICATION SYSTEM (AIS) A coast station using telemetry to provide coast or navigational hazard information, including identity, type, position, navigational status and other safety-related information automatically to other AIS stations.
 CO

OFFICIAL COAST A coast station operated by a navy and used for official correspondence with its fleet of ships.
 DC
 
COAST DSC WATCH
A coast station participating in watch-keeping using digital selective calling techniques.
 Port Operations ServiceA maritime mobile service in or near a port 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.
 FP
 MS
PORT
A coast station providing communications in or near a port, in locks, canals, or other waterways to ship stations.
 Ship Movement ServiceA maritime mobile service in which messages are restricted to those relating to the safe movement of ships.
 FT
 MS
PILOT A coast station whose messages are restricted to those relating to the safe movement of ships.
 VS
 
VESSEL TRAFFIC SERVICES (VTS) A pilot station that provides a traffic control service for ships in designated waters.
Safety ServiceA mobile service used permanently or temporarily for the safeguarding of human life and property.
 FS
 MO
PUBLIC SAFETY
A land station established solely for the safety or preservation of life and protection of property.
 FS
 
Emergency Medical Services (EMS) A public safety station used in the provision of ambulance, paramedic, hospital, doctor or water or mountain rescue services.
 FE
 
EMERGENCY MANAGEMENT A public safety station used to provide essential communications incident to or in connection with a disaster, hazardous material clean-up or other emergencies.
 FF
 
FIRE
A public safety station used in the provision of municipal fire protection services.
 FH
 
HIGHWAY MAINTENANCE A public safety station used in the provision of street and road repair and maintenance services including highway patrol units.
 FN
 
BORDER PROTECTION
A public safety station used in the provision of border protection (including customs).
 FO
 
CONSERVATION - FORESTRY A public safety station used in the provision of conservation, forestry and forest fire control services.
 FU
 
PUBLIC TRANSIT A public safety station used in the provision of public transit (including subway, streetcar and light rail trains).
 FW
 
PUBLIC WORKS A public safety station used in the provision of public works (including water works, etc.).
 PO
 
POLICE A public safety station used in the provision of police services.
 POP
 
Prison A police station used in the operations of correctional institutions.
 YS
 
TRUNKED PUBLIC SAFETY NETWORK
A land station with multiple public safety users on a shared network of frequencies with a digital control channel.
 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
A station used 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.
 Radionavigation ServiceA radiodetermination service for the purpose of navigation, including obstruction warning.
 RN
 NR
RADIONAVIGATION
A radiodetermination station used for the purpose of navigation, including obstruction warning.
 RNL

Long Range Navigation System (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.
 DG
 
DIFFERENTIAL GNSS (DGNSS) A radionavigation station which transmits locally relevant integrity messages and pseudorange corrections to a global navigation satellite system-derived position for mobiles, and approach data for aircraft.
 RG

RADIO-DIRECTION FINDING (DF)
A radionavigation station using the reception of radio waves for the purpose of determining the direction of a station or object.
 Aeronautical Radionavigation ServiceA radionavigation service intended for the benefit and for the safe operation of aircraft.
 AL
 AM
AERONAUTICAL RADIONAVIGATION
A radionavigation station intended for the benefit and for the safe operation of aircraft.
 ALM
 
Aeronautical Marker Beacon An aeronautical radionavigation station, operating on a frequency of 75 MHz, that radiates vertically a distinctive pattern for providing position information to aircraft while landing at an aerodrome or to mark a significant point on an air route.
 RC
 
NON-DIRECTIONAL RADIOBEACON (NDB)
An aeronautical radionavigation station intended for aircraft to determine its bearing or direction in relation to the radiobeacon station (includes compass locator stations).
 RD
 
RADIO RANGE (RNG)
An aeronautical radionavigation station providing radial equisignal zones.
 RI

INSTRUMENT LANDING SYSTEM (ILS) An aeronautical radionavigation station consisting of a VHF localizer, which provides horizontal guidance to aircraft with respect to a runway centre line during approach to landing, and normally, an additional glide slope transmitting on a separate UHF frequency which provides vertical guidance.
 RT
 
OMNI-RANGE (VOR/DME/TACAN) An aeronautical radionavigation station that transmits on VHF an information wave according to a rotary directional pattern and an omni-directional reference wave, and by comparison allows direct indication of the bearing of that station from an aircraft. Omni-ranges that are equipped with distance-measuring equipment operating on a separate UHF frequency or are in the form of a UHF tactical air navigation system additionally, after being interrogated by an aircraft, provide direct indication of the distance of that station from an aircraft by measuring the time of transmission to and from the transponder.
 Maritime Radionavigation ServiceA radionavigation service intended for the benefit and for the safe operation of ships.
 NL
 RM MARITIME RADIONAVIGATION
A radionavigation station intended for the benefit and for the safe operation of ships.
 RCN
 
Marine Radiobeacon (ROBN)
A maritime radionavigation station intended for ships to determine their bearing or direction in relation to the radiobeacon station.
 Radiolocation ServiceA radiodetermination service for the purposes other than those of radionavigation (excluding meteorological aids SM).
 LR
 MR
RADIOLOCATION
A radiodetermination station used for the purposes other than those of radionavigation.
 LRD
 
Surveillance Radar A radiolocation station employing radar to display the presence of aircraft or ships within its range.
 SPECIAL SERVICES
A radiocommunication service operated specially to meet the requirements of a particular service of general utility not open to public correspondance; such as time signals, regular meteorological reports, notices to mariners, press messages for general reception, medical advice (medical consultations by radio), calibrated frequencies, emissions for scientific purposes, etc.
 BM

METEOROLOGICAL BULLETIN BROADCAST
A special station used for the regular broadcasting of meteorological bulletins for shipping (excluding MSI broadcasts).
 BV

AERONAUTICAL METEOROLOGICAL BROADCAST (VOLMET)
A special station used for the regular broadcasting of meteorological bulletins for aircraft.
 GO

GEOPHYSICAL
A special station used for the regular broadcasting of ursigrams.
 IF

MARITIME SAFETY INFORMATION BROADCAST (MSI)
A special station used for the regular broadcasting of navigational and meteorological warnings and urgent information to ships by means of narrow-band direct-printing techniques.
 MD

MEDICAL ADVICE
A special station used for transmitting medical consultations by radio.
 MX

METEOROLOGICAL INFORMATION BROADCAST
A special station operating in the fixed service used for the regular broadcasting of meteorological reports.
 NA

NOTICES TO NAVIGATORS BROADCASTA special station used for the regular broadcasting of notices to navigators to ships (excluding MSI broadcasts).
 PX

PRESS BROADCAST
A special station used for the broadcasting of press messages for general reception.
 Standard Frequency & Time Signal ServiceA special service for scientific, technical and other purposes providing the transmission of specified frequencies and/or time signals of stated high precision intended for general reception.
 SS

STANDARD FREQUENCY
A special station used for scientific, technical and other purposes providing the transmission of specified frequencies of stated high precision (normally 20, 2500, 5000, 10000, 15000, 20000 or 25000 kHz) intended for general reception.
 HR

TIME SIGNAL
A special station used for the transmission of time signals of stated high precision intended for general reception.
 OTHER

 CB
 
CITIZENS' BAND (CB)
A normally unlicensed low-power station used for personal and business communications (including general mobile and family radio).
 IM

INDUSTRIAL, SCIENTIFIC OR MEDICAL EQUIPMENT (ISM) 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.
 LP

LOW-POWER COMMUNICATION (LP) A normally unlicensed restricted radiation device used for radiocommunications within a home, business, school, church or other building.
 LP

LP Audio An LP station used for transmitting speech or music (such as wireless microphones, personal listening devices, assisted listening devices, wireless speakers, etc.)
 LPD

LP Telecommand An LP station used for telecommand (such as radio signalling, remote-control models, garage door openers, etc.)
 LPE

LP Telemetering An LP station used for telemetering (such as wireless weather stations, etc.)
 LPX

LP Fixed An LP station used for fixed operations (such as wireless intercoms, etc.)
 LT

LP VIDEO An LP station used for transmitting video (such as security cameras, etc.)
 U

UNWANTED EMISSIONS Spurious & out-of-band emissions.
 XX

PIRATE A station whose transmissions are unauthorized.
 ZZ

UNKNOWN A presumed to be authorized station whose purpose is unknown.

 SPACE  RADIOCOMMUNICATION  SERVICES
 RADIO  STATION  CLASS  CODES
Earth Stations are located either on the Earth's surface or within the major portion of the Earth's atmosphere (less than 50 km above the Earth's surface) 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 (more than 50 km above the Earth's surface).

Space Telecommand Stations are used 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. A TD/UD/ED suffix added to any code indicates a telecommand station. Space Telecommand is also a specific service.

Space Telemetering Stations use 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. A TR/UR/ER suffix added to any code indicates a telemetering station. Space Telemetry is also a specific service.

Space Tracking Stations are used to determine the orbit, velocity or instantaneous postion of an object in space by means of radiodetermination, excluding primary radar, for the purpose of following the movement of the object. A TK/UK/EK suffix added to any code indicates a tracking station. Space tracking is also a specific service.

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 EARTH / SPACE An earth or space station used 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.
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
 UW
 EW
EARTH EXPLORATION EARTH / SPACE An earth or space station 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.
Meteorological-Satellite ServiceAn Earth exploration-satellite service for meteorological purposes.
 TM
 UM
 EM
METEOROLOGICAL EARTH / SPACE
An Earth exploration earth or space station used for meteorological purposes.
INTER-SATELLITE SERVICE A radiocommunication service providing links between artificial earth satellites.
 
 
 ES
INTER-SATELLITE
A space station located on an artificial earth satellite that links to another artificial earth 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. Emergency position-indicating radiobeacons are also part of this service.
 
 UA
 EI
MOBILE SPACE
 A space station that communicates with mobile earth stations or with other space stations used by the mobile-satellite service.
 UA (
MOBILE EARTH) : A mobile earth station that communicates with space stations or with other mobile earth stations by means of one or more space stations.
 
 TE 
Emergency Position-indicating Radio Beacon (Epirb) A mobile earth station intended to facilitate search and rescue operations.
Aeronautical Mobile-Satellite Service A mobile-satellite service in which mobile earth stations are located on board aircraft.
 
 TJ
 EJ
AERONAUTICAL SPACE
 A mobile space station that communicates with aircraft or with other space stations used by the mobile-satellite service.
 
TJ (AIRCRAFT EARTH) : An aircraft station that communicates with space stations or with other aircraft stations by means of one or more space stations.
Land Mobile-Satellite Service A mobile-satellite service in which mobile earth stations are located on land.
 
 TU
 EU
BASE SPACE
 A mobile space station that communicates with land mobile stations or with other space stations used by the mobile-satellite service.
 
TU (LAND MOBILE EARTH) : A land mobile station that communicates with space stations or with other land mobile stations by means of one or more space stations.
Maritime Mobile-Satellite Service A mobile-satellite service in which mobile earth stations are located on board ships.
 
 TG
 EG
COAST SPACE
 A mobile space station that communicates with ships or with other space stations used by the mobile-satellite service.
 
TG (SHIP EARTH) : A ship station that communicates with space stations or with other ship ststions by means of one or more space stations.
RADIODETERMINATION-SATELLITE SERVICEA radiocommunication service for the purpose of radiodetermination involving the use of one or more space stations. 
 
 TL
 EF
RADIODETERMINATION SPACE
 A space station used for the purpose of radiodetermination, such as GPS.
 
 
 GN
GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS)
 A radiodetermination space station used for the purpose of radiodetermination, such as GPS.
Radionavigation-Satellite ServiceA radiodetermination-satellite service used for the purpose of radionavigation.  
 
 UN
 EN
RADIONAVIGATION SPACE
 A radiodetermination space station used for the purpose of radionavigation.
Aeronautical Radionavigation-Satellite ServiceA radionavigation-satellite service in which earth stations are located on board aircraft.
 
 TO
 EO
AERONAUTICAL RADIONAVIGATION SPACE
 A radionavigation space station whose transmissions are used on board aircraft.
Maritime Radionavigation-Satellite ServiceA radionavigation-satellite service in which earth stations are located on board ships.
 
 TQ
 EQ
MARITIME RADIONAVIGATION SPACE
 A radionavigation space station whose transmissions are used on board ships.
SPACE OPERATION SERVICEA radiocommunication service concerned exclusively with the operation of spacecraft, in particular - space tracking, space telemetry and space telecommand.
 TT
 UT
 ET
SPACE OPERATION
An earth or space station used during the operation of spacecraft, in particular - space tracking, space telemetry and space telecommand.
 TD
 UD
 ED
SPACE TELECOMMAND
A space operation earth or space station used 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.




See ED note for more options.
 TR
 UR
 ER
SPACE TELEMETERING
A space operation earth or space station using 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.




See ER note for more options.
 TK
 UK
 EK
SPACE TRACKING
A space operation earth or space station used for 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.




See EK note for more options.
 
 SP
SPACECRAFT A space operation space station that is a man-made vehicle which is intended to go beyond the major portion of the Earth's atmosphere.
SPACE RESEARCH SERVICEA radiocommunication service in which spacecraft or other objects in space are used for scientific or technological research purposes.
 TH
 UH
 EH
SPACE RESEARCH
An earth or space station used for communications with spacecraft or other objects in space are used for scientific or technological research purposes.
 THS


Sounder Prediction
A space research station in the form of an ionosphere sounder for realtime monitoring of upper atmospheric phenomena or to obtain data for the prediction of propagation conditions.
SPECIAL SPACE 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.
 
 
 -
 
 
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. 


 EE
STANDARD FREQUENCY SPACE
A special space station used to transmit specified frequencies of stated high precision (normally 400.1 MHz) intended for general reception.


 EY TIME SIGNAL SPACE
A special space station used to transmit time signals of stated high precision intended for general reception.

  RECEIVING STATIONS
 RADIO  STATION  CLASS  CODES
Land Class of Station
Definitions / Notes
 RX RECEIVING
Terrestrial receiving station only.
 TP
SPACE RECEIVING
Space receiving station only.
 Radio Astronomy Service A service involving the use of astronomy based on the reception of radio waves of cosmic origin.
 RA RADIO ASTRONOMY
A receiving station involving the use of astronomy based on the reception of radio waves of cosmic origin.


 Record of Changes
2014-03-22 
 Aeronautical marker beacons changed from ALZ to ALM.
2014-01-28 
 Major update (total revision). Inclusion of Special Services.

Maintained by William R. Hepburn ©2011-14. This list is in no way is meant to represent official usage.