Acronyms

Ω Ohms

8P8C 8 Position, 8 Contact (modular connector)

A Ampere

AC Alternating Current

4G Fourth Generation

A/D Analog-to-digital

AAS Advanced Antenna System

ACK Acknowledgement

AF Audio Frequency

AFC Above finished ceiling

AFSK Audio Frequency Shift Keying

AH Ampere Hour

AHJ Authority Having Jurisdiction

ALE Automatic Link Establishment

AM Amplitude Modulation

AMBE Advanced Multi-Band Excitation (vocoder)

Amp Ampere

AMPS Advanced mobile phone system

AMSAT Amateur Satellite

AMTS Automated Maritime Telecommunications Service

ANSI American National Standards Institute

AP Access Provider

Access Point

ARES Amateur Radio Emergency Service

ARISS Amateur Radio on the International Space Station

ARQ Automatic Repeat reQuest

ARRL Amateur Radio Relay League

ATIS Alliance for Telecommunications Industry Solutions

AWG American Wire Gauge

AWS Advanced Wireless Services

BAN Body Area Network (for medical devices)

BayRICS Bay Area Regional Interoperability Communications System

BayWEB Bay Area Wireless Enhanced Broadband

BCT Broadcast Communications Technology

Bonding Conductor for Telecommunications

BDA Bi-Directional Amplifier

BER Bit Error Rate

BICSI Building Industry Consulting Services International

BIM Building Information Modeling

Building Information Management

BIPM International Bureau of Weights and Measures

BOOM Build-Own-Operate-Maintain

bps Bits per Second

BPSK Binary phase shift keying

BSC Base Station Controller

BSH Base Station Hub

BTS Base Transceiver Station

CAD Computer Aided Design

Computer Aided Drafting (legacy)

CADD Computer Aided Design & Drafting

CALEA Communications Assistance for Law Enforcement Act

CAM Computer Aided Manufacturing

CAN Campus Area Network

CAT Computer Aided Transceiver

CATV Community Antenna Television (cable TV)

C/I Carrier-to-Interference ratio

C/N Carrier to Noise Ratio

C/(N+I) Carrier-to-Noise plus Interference

CAI Common Air Interface (P25 subsystem)

CB Citizen’s Band

CCIR Consultative Committee on International Radio (Legacy; See ITU-R)

CCITT Consultative Committee of International Telegraph and Telephone (Legacy. See ITU-T)

CDCSS Continuous Digital Coded Squelch System (See DCS)

CDMA Code-Division, Multiple-Access

CENELEC Comite Europeen de Normalisation Electrotechnique (European Committee for Electrotechnical Standardization)

CFR Code of Federal Regulations|

CG^® Channel Guard (GE/Ericsson/Harris’s CTCSS)

CII Critical Infrastructure Industry

CMAS Commercial Mobile Alert System

CMRS Commercial Mobile Radio Service

COFDM Coded Orthogonal Frequency Division Multiplex

CSA Canadian Standards Association (CSA International)

CSI Construction Specifications Institute

CTCSS Continuous Tone Coded Squelch System

CW Continuous Wave

DAQ Delivered Audio Quality

DAS Distributed Antenna System(s)

dB Decibel(s)

dBA Decibel(s) adjusted for frequency (audio)

dB(A)

dBd Decibel(s) relative to a dipole radiator

dBi Decibel(s) relative to an isotropic radiator

dBm Decibel(s), referenced to one milliwatt

dBW Decibel(s), referenced to one watt

DBS Direct Broadcast Satellite|

DC Direct Current

DCS Digital Coded Squelch

DECT Digital European Cordless Telephone

Demarc Demarcation Point

Demux Demultiplexer

DF Direction Finding

DMM Digital Multimeter

DMR Digital Mobile Radio

DPL Digital Private Line (see DCS)

dPMR Digital Private Mobile Radio (CAI standard by ETSI)

DRM Digital Radio Mondiale

DSP Digital Signal Processing/Processor

DSSS Direct Sequence Spread Spectrum

DTMF Dual-Tone Multi-Frequency

DTV Digital Television

DVM Digital Volt-Ohm Meter

DX Long Distance (Telephone legacy: "Distant Exchange")

DXCC DX Century Club (ARRL award)

EDGE Enhanced Data GSM Environment

EIA Electronic Industries Alliance

EIRP Effective Radiated Power referenced to an Isotropic radiator

ELF Extremely Low Frequency

EMC Electromagnetic Compatibility

EMI Electromagnetic Interference

EMP Electromagnetic Pulse

EMT Electrical Metallic Tubing

ERC European Radiocommunications Committee

ERMES European Radio Messaging System

ERP Effective Radiated Power

ESD Electrostatic Discharge

ETSI European Telecommunications Standards Institute

EV-DO Evolution Data-Only Evolution Data-Optimized

FAT Factory Acceptance Testing

FCC Federal Communications Commission

FDM Frequency Division Multiplex

FDMA Frequency Division Multiple Access

FEC Forward Error Correction

FEMA Federal Emergency Management Agency

FHSS Frequency Hopping Spread Spectrum

FLDigi Fast Light Digital (Amateur Modem Application)

FM FM Approvals/FM Global (was Factory Mutual)

Frequency Modulation

FRS Family Radio Service

FSK Frequency Shift Keying

FSL Free Space Loss

FSO Free Space Optics

GAN Global Area Network

GC General Contractor

GE Grounding Equalizer

GEC Grounding Electrode Conductor

GEO Geosynchronous Earth Orbit (satellite)

GHz GigaHertz

GIC Geomagnetically Induced Current

GIS Geographic Information System

GMRS General Mobile Radio Service

GND Ground

GPRS General Packet Radio Service

GPS Global Positioning System

GSM Global System for Mobile Communications (formerly Groupe Specialite Mobile)

HEU Head End Unit

HF High Frequency

HiperLAN High Performance Radio LAN|

HRFWG Home Radio Frequency Working Group

HSPA High Speed Packet Access

H&S Health and Safety

Hz Hertz

IBW In-Building Wireless

ICAO International Civil Aviation Organization

ICT Information and Communications Technology

IDAS Icom Digital Advanced System

IDEN Integrated Digital Enhanced Network

IEC International Electrotechnical Commission

IEE Institution of Electrical Engineers (UK)

IEEE Institute of Electrical and Electronics Engineers

IF Intermediate Frequency

IFC International Fire Code

IL Insertion Loss

IMC Intermediate Metal Conduit

IMT International Mobile Telecommunications

IMTS Improved Mobile Telephone Service

iPAWS Integrated Public Alert and Warning System (FEMA)

IR Infrared

IrDA Infrared Data Association

IRLP Internet Radio Linking Project

ISM Industrial, Scientific and Medical (FCC band)

ISO International Organization for Standardization

ISSI Inter-RF SubSystem Interface (P25 subsystem)

ITS Information Technology System (legacy; see ICT)

ITU International Telecommunications Union

ITU-R International Telecommunications Union-Radio

ITU-T International Telecommunications Union-Telecommunication

IWCE International Wireless Communications Expo

IWN Integrated Wireless Network

JPA Joint Powers Authority

kVA Kilovolt-Ampere

kW Kilowatt

kWh Kilowatt-Hour

Laser Light Amplification by Stimulated Emission of Radiation

LCD Liquid Crystal Display

LED Light Emitting Diode

LEED Leadership in Energy and Environmental Design

LEO Low Earth Orbit (satellite)

LF Low Frequency

LMCC Land Mobile Communications Council

LMR Land Mobile Radio

LoS Line of Sight

LoTW Logbook of The World (ARRL)

LQA Link Quality Analysis

LS0H Low Smoke, Zero Halogen (cable)

LSB Lower Side Band

LSZH Low Smoke, Zero Halogen (cable)

LTE Long Term Evolution

LW Long Wavelength

MAC Moves, Adds and Changes

MAPL Maximum acceptable path loss

MATV Master Antenna Television

MCP Multimode Communications Processor

MDT Mobile Data Terminal

MEO Medium Earth Orbit (satellite)

MF Medium Frequency

MFSK Multiple Frequency-Shift Keying

MHz MegaHertz

Mic Microphone

MIMO Multiple Input/Multiple Output (antenna)

Modem Modulator/Demoduator

MOU Memorandum of Understanding

MoU

MPOE Minimum Point of Entry

MSC Mobile Switching Center

MSDS Material Safety Data Sheet

MTBF Mean Time Between Failures

MTGB Main Telecommunications Grounding Busbar

MTS Mobile Telephone System

MTTF Mean Time To Failure

MTTR Mean Time To Repair

MUF Maximum Usable Frequency

Mux Multiplex; Multiplexer

NAK Non-Acknowledgement

NAMPS Narrowband Advanced Mobile Phone Service

NBIMS National Building Information Model Standard

NCS National CAD Standard

NEBS Network Equipment Building Systems

NEC National Electric Code (by NFPA)

NEMA National Electrical Manufacturers Association

NESC National Electric Safety Code (IEEE)

NFC Near-Field Communications

NFPA National Fire Protection Association

NGO Non-Governmental Organization

NiCd Nickel Cadmium (battery)

NIST National Institute of Standards and Technology

NPSTC National Public Safety Telecommunications Council

NRTL National Recognized Testing Laboratory

NTIA National Telecommunications and Information Administration

NTS National Traffic System

NVIS Near Vertical Incident Skywave

NXDN An FDMA-based CAI by Icom & Kenwood

O&M Operation & Maintenance

OD Outside Diameter

OEM Original Equipment Manufacturer

OFDM Orthogonal Frequency Division Multiplexing

OFDMA Orthogonal Frequency Division Multiple Access

OSHA Occupational Safety and Health Administration

OSP Outside Plant

OTAR Over the Air Rekeying

P25 Project 25 (an LMR protocol suite)

PA Public Address

PAM Pulse Amplitude Modulation

PAN Personal Area Network (e.g., Bluetooth)

PCM Pulse Code Modulation

PCS Personal Communications Service

PDT Professional Digital Trunking (Chinese standard)

PDU Power Distribution Unit

PE Professional Engineer

PEP Peak Envelope Power

PIM Passive Intermodulation

PIR Passive Infrared

PL^® Private Line (Motorola’s CTCSS)

PLC Programmable Logic Controller

PLMD Public Land Mobile Network

PLMR Private Land Mobile Radio

PM Phase Modulation

Project Manager

Preventive Maintenance

PMI® Project Management Institute

PO Purchase Order

PPE Personal Protective Equipment

PRCS Permit-Required Confined Space

PSAP Public Safety Access Point

PSCC Public Safety Communications Council

PSK Phase Shift Keying

PSST Public Safety Spectrum Trust

PTT Posts, Telephone & Telegraph (government org.)

Push To Talk

PVC Polyvinyl Chloride

QAM Quadrature Amplitude Modulation

QPSK Quadrature Phase Shift Keying

QoS Quality of Service

QT^® Quiet Tone (Kenwood’s CTCSS)

RACES Radio Amateur Civil Emergency Service

RAN Radio Access Network

RAU Remote Access Unit

RBC Rack Bonding Conductor

RCDD Registered Communications Distribution Designer (BICSI)

RF Radio Frequency

RFI Radio Frequency Interference

Request For Information

RFID Radio Frequency Identification

RFP Request for proposal

RGB Rack Grounding Busbar

RIU Radio Interface Unit

RJ45 Registered Jack type 45

RMC Rigid Metal Conduit

RMS Radio Message Server

RMU Rack Mount Unit (1.75 in.)

ROI Return on Investment

RoHS Restriction of Hazardous Substance

RoIP Radio over Internet Protocol

ROU Remote Optical Unit

RSSI Received Signal Strength Indicator

RTTY Radio Teletype

RU Remote Unit

Rack Unit (1.75 in.)

Rx/RX Receive/Receiver

SAR Specific absorption rate

SDO Standards Development Organization

SHF Super High Frequency

SI International System of Units

System Integrator

SINAD Signal-to-noise and distortion ratio

SINR Signal to interference plus noise ratio

SLA Service Level Agreement

SME Subject Matter Expert

SMR Specialized Mobile Radio

SMS Short Message Service

SNR Signal to Noise Ratio

S/N

SoW Scope of work

SOW

SP Service Provider

SPOC Single Point of Contact (person)

SPOF Single Point of Failure

SSB Single Side Band

SSID Service Set Identification (Wi-Fi)

STEP Sustainable Technology Environments Program

SWR Standing Wave Ratio

T&C Terms and Conditions

TAG Technical Advisory Group

TBB Telecommunications Bonding Backbone

TCO Total Cost of Ownership

TDD Time Division Duplexing

TDM Time Division Multiplexing

TDMA Time Division Multiple Access

TEBC Telecommunications Equipment Bonding Conductor

TETRA Terrestrial Trunked Radio

Trans-European Trunked Radio (legacy)

TGB Telecommunications Grounding Busbar

TIA Telecommunications Industry Association

TI Tenant Improvement

TIA Telecommunications Industry Association

TMGB Telecommunications Main Grounding Busbar

TNC Terminal Node Controller (amateur radio)

TR Telecommunications Room

Tx, TX Transmit/Transmitter

UBC Uniform Building Code

Unit Bonding Conductor

UHF Ultra-High Frequency

UL Underwriters Laboratories

ULS Universal Licensing System

UMTS Universal Mobile Telecommunications Service

UON Unless Otherwise Noted

UPS Uninterruptible Power Supply

USB Upper Side Band

Universal Serial Bus|

USGBC U.S. Green Building Council

UTC Universal Coordinated Time

UV Ultraviolet

UWB Ultra Wide Band

VAC Volts Alternating Current

VDC Volts Direct Current

VF Voice Frequency

VHF Very High Frequency

VLF Very Low Frequency

Vocoder Voice Coder/Decoder

VOM Volt-Ohm-Milliammeter

VSAT Very Small Aperture Terminal (satellite earth station)

VSWR Voltage Standing Wave Ratio

WAP Wireless Access Point

WCDMA Wideband Code Division Multiple Access

WEA Wireless Emergency Alerts

Wi-Fi Wireless Fidelity

WIMAX Worldwide Interoperability for Microwave Access

WL2K Winlink 2000

WLAN Wireless Local Area Network

WMTS Wireless Medical Telemetry Service

WSP Wireless Service Provider