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 (European Conference of Postal and Telecommunications Administrations)
civ. civil
COSPAS/SARSAT satellite search and rescue system
CRS Central Radio Station
CT Cordless Telephone
DA2GC Direct Air-to-Ground Communications
DC Duty Cycle
D-GPS 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
ECC Electronic Communications Committee
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 Norm
ENG/OB Electronic News Gathering / Outside Broadcasting
EPIRB Emergency Position Indicating Radio Beacons
ERC European Radiocommunications Committee
e.r.p. Effective Radiated Power
ESIM Earth Station In-Motion
ESOMP Earth Stations On Mobile Platforms
ESV Earth Stations on-board Vessels
FDD Frequency Division Duplex
FM Frequency Modulation
FS Fixed Service
FSS Fixed Satellite Service
FWA Fixed Wireless Access
GBAS Ground-Based Augmentation System
GBSAR Ground Based Synthetic Aperture Radar
GLONASS GLObalnaja NAvigacionnaja Sputnikovaja Sistema (Global Navigation Satellite System)
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 Tactical 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 Power 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
MLS Microwave Landing System
MMDS Microwave Multipoint Distribution System
MSI Maritime Safety Information
MSS Mobile Satellite Service
MVDS Multipoint Video Distribution System
MW Middle 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 Multipoint system
OB Outside Broadcasting
(OR) (Outside Routes)
PAMR Public Access Mobile Radio
PAR Precision Approach Radar
PLB Personal Locator Beacon
PPDR Public Protection and Disaster Relief
PMSE Programme Making and Special Events
PMR Private/ Professional Mobile Radio
(R) (Along Routes)
RA Radio Astronomy
RFID Radio Frequency Identification
RLAN Radio Local Area Network
RMR Railway Mobile Radio
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
TETRAPOL digital professional mobile radio standard for digital voice and data communication used by public safety and military throughout Europe
TLPR Tank Level Probing Radar
TRA-ECS Terrestrial radio applications capable of providing electronic communications services
TS Terminal Station
TTT Transport and Traffic Telematics
TV Television
ULP-AMI Ultra Low Power Active Medical Implants
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
WAS Wireless Access Systems
WRC World Radiocommunication Conference."