ADS Automatic Dependant Surveillance (Aeronautical)
AES Aircraft Earth Station
AGA Air-Ground-Air
AIS Universal Shipborne Automatic Identification System
ALD Assistive Listening Devices
AM Amplitude Modulation
ASDE Airport Surface Detection Equipment
BBDR Broad Band Disaster Relief
BFWA Broadband Fixed Wireless Access
BMA Building Material Analysis
BWA Broadband Wireless Access
CB  Citizen’s Band 
CCIR Commité Consultatif International Radiocommunication
CDMA Coded Division Multiplexing Access
CEPT Conférence Européenne des Administrations des Postes et des Télécommunications
civ. civil
CRS Central Radio Station
CT Cordless Telephone
DA2GC Direct Air-to-Ground Communications
DC Duty Cycle
D-GSM Diferencial global Positioning System
DECT Digital Enhanced Cordless Telecommunications
DME Distance Measuring Equipment
DMO Direct Mode Operation
DRM Digital Radio Mondiale
DSC Digital Selective Calling
DVB-T Digital Video Broadcasting - Terrestrial
ECA European Common Allocation
ECC Electronic Communications Committee
ECP European Common Proposal
E-GSM Extended Global System for Mobile Communication
e.i.r.p. Equivalent Isotropically Radiated Power
ELT Emergency Locator Transmitter
EMS European Mobile Satellite System
EN European norme 
ENG/OB Electronic News Gathering) / Outside Broadcasting
EPIRB Emergency Position Indicating Radio Beacons
ERC European Radiocommunications Committee
e.r.p. Effective Radiated Power
ESOMP Earth Stations On Mobile Platforms
ESV Earth Stations on-board Vessels
FB Fixed Base Station
FDD Frequency Division Duplex
FM Frequency Modulation
FS Fixed Service
FSS Fixed Satellite Service
FWA Fixed Wireless Access
GALILEO European Global Navigation Satellite System
GBAS Ground-Based Augmentation System
GBSAR Ground Based Synthetic Aperture Radar
GMDSS Global Maritime Distress and Safety System
GMPCS Global Mobile Personal Communications System 
GNSS Global Navigation Satellite System
GPR/WPR Ground - and Wall - Probing Radar
GPS Global Positioning System
GSM Global System for Mobile Communication
GSM - R Global System for Mobile Communications on Railways
GSO Geostationary Satellite Orbit
HAPS High Altitude Platform Station
harmon. harmonised (mil. band)
HDFS  High Density Fixed Service
HEST High e. i. r. p. - Satellite Terminals
IBCN Integrated Broadband Communications Network
IFF Identification Friend or Foe
ILS Instrument Landing System
IMT International Mobile Telecommunications
INMARSAT International Maritime Satellite Organisation
ISM Industrial, Scientific and Medical
ITS Inteligent Transport Systems
ITU-R International Telecommunication Union-Radiocommunication
JTIDS Joint Taktical Information Distribution System
L Locator
LAES Location Application for Emergency Services
LAN Local Area Network
LEST Low e. i. r. p. - Satellite Terminals
LP-AMI Low Power Active Medical Implants
LPD Low Pover Device
LPR Level Probing Radar
LT2 Location Tracking type 2
LTE Long Term Evolution
LW Long Waves                            
MBANS Medical Body Area Network System
MCA Mobile Communications on Board Aircraft
MCV Mobile Communication Services on Board Vessels
MFCN Mobile/Fixed Communications Networks
MIDS Multifunctional Information Distribution System
mil. military
ML Mobile Land Stations
MLS Microwave Landing System
MMDS Microwave Multipoint Distribution System
MSI Maritime Safety Information
MSS Mobile Satellite Service
MVDS Multipoint Video Distribution System
MW Medium Waves                            
MWS Multimedia Wireless System                          
NAVTEX Narrow-Band Direction-Printing Telegraphy System for Transmission of Navigational and Meteorological Warnings and Urgent Information to Ships   
NDB Nondirectional Radio Beacon                        
NGSO Non-Geostationary Satellite Orbit
NP2M Narrowband Point to Multipoind system
NMT Nordic Mobile Telephone
OB Outside Broadcasting
(OR) Outside Routes
PAMR Public Access Mobile Radio
POCSAG Post Office Code Standards Advisory Group
PLB Personal Local Beacon
PPDR Public Protection and Disaster Relief
PMSE Programme Making and Special Events
PMR Private/ Professional Mobile Radio
PR27  Personal Radio 27 MHz
(R) Along Routes
RA Radio Astronomy
RFID Radio Frequency Identification 
RLAN Radio Local Area Network
RR Radio Regulations
RTE Radar Target Enhancer
SAB Service Ancillary to Broadcasting
SAP Service Ancillary to Programme Making
SAR Search and Rescue
SATCOM Satellite Communication
SIT/SUT Satellite Interactive Terminal/ Satellite User Terminal
SNG Satellite News Gathering
S-PCS Satellite Personal Communication Service
SRD Short Range Device
SRR Short Range Radars
SSR Secondary Surveillance Radar
SUP suppressed
SW Short Waves                            
TACAN Tactical Air Navigation
TACS Total Access Communications System
T-DAB Terrestrial Digital Audio Broadcasting
TDD Time Division Duplex
TETRA Terrestrial Trunked Radio
TLPR Tank Level Probing Radar
TRA-ECS Terrestrial radio applications capable of providing electronic communications services 
TS Terminal Station
TTT Transport and Traffic Telematic
TV Television
ULP-AID Ultra Low Power Animal Implant Devices
ULP-MMI Ultra Low Power Medical Membrane Implant
UWB Ultra Wide Band
VHF Very High Frequency
VLBI Very Long Baseline Interferometry
VOR VHF Omnidirectional Range
WAIC Wireless Avionics Intra-Communications systems
WIA Wireless Industrial Applications
WRC World Radiocommunication Conference