Terminology

RFRadio Frequency

Radio Frequency

HFHigh Frequency (3-30 MHz)

High Frequency (3-30 MHzMegaHertz (MHz) 10^6 Hz)

VHFVery High Frequency (30-300 MHz)

Very High Frequency (30-300 MHzMegaHertz (MHz) 10^6 Hz)

UHFUltra High Frequency (300-3000 MHz)

Ultra High Frequency (300-3000 MHzMegaHertz (MHz) 10^6 Hz)

MFMedium Frequency (300-3000 kHz)

Medium Frequency (300-3000 kHzKiloHertz (kHz) 10^3 Hz)

LFLow Frequency (30-300 kHz)

Low Frequency (30-300 kHzKiloHertz (kHz) 10^3 Hz)

VLFVery Low Frequency (3-30 kHz)

Very Low Frequency (3-30 kHzKiloHertz (kHz) 10^3 Hz)

PWMPulse Width Modulation

Pulse Width Modulation

MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.)

Minimum-Shift Keying (When Shift/BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.)

GMSKGaussian Minimum-Shift Keying

Gaussian Minimum-Shift Keying

FSKFrequency-Shift Keying

Frequency-Shift Keying

GFSKGaussian Frequency-Shift Keying

Gaussian Frequency-Shift Keying

FFSKFast Frequency-Shift Keying

Fast Frequency-Shift Keying

AFSKAudio Frequency-Shift Keying

Audio Frequency-Shift Keying

PSKPhase-Shift Keying

Phase-Shift Keying

BPSKBinary Phase-Shift Keying (1 bit per symbol)

2-PSKBinary Phase-Shift Keying (1 bit per symbol)

2PSKBinary Phase-Shift Keying (1 bit per symbol)

Binary Phase-Shift Keying (1 bit per symbol)

QPSKQuadrature Phase-Shift Keying (2 bits per symbol)

4-PSKQuadrature Phase-Shift Keying (2 bits per symbol)

4PSKQuadrature Phase-Shift Keying (2 bits per symbol)

Quadrature Phase-Shift Keying (2 bits per symbol)

8PSK8-Phase Phase-Shift Keying (3 bits per symbol)

8-PSK8-Phase Phase-Shift Keying (3 bits per symbol)

8-Phase Phase-Shift Keying (3 bits per symbol)

DPSKDifferential Phase-Shift Keying

Differential Phase-Shift Keying

DQPSKDifferential Quadrature Phase-Shift Keying

Differential Quadrature Phase-Shift Keying

QAMQuadrature Amplitude Modulation

Quadrature Amplitude Modulation

MPSKMultiple Phase-Shift Keying

Multiple Phase-Shift Keying

CQPSKContinuous Quadrature Phase-Shift Keying

Continuous Quadrature Phase-Shift Keying

ASKAmplitude-Shift Keying

Amplitude-Shift Keying

PAMPulse Amplitude Modulation

Pulse Amplitude Modulation

PPMPulse Position Modulation

Pulse Position Modulation

C4FMContinuous 4-Level Frequency Modulation

Continuous 4-Level Frequency Modulation

4FSK4-Level Frequency Shift Keying

4-Level Frequency Shift Keying

OOKOn-Off Keying Modulation

On-Off Keying Modulation

IFKIncremental Frequency Keying

Incremental Frequency Keying

IFK+Offset Incremental Frequency Keying

Offset Incremental Frequency Keying

BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

bdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. (unit symbol BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.) is the unit for symbol rate or modulation rate in symbols per second.

kBdkilobaud, kilosymbols per second (ksym/s)

kilobaud, kilosymbols per second (ksym/s)

bpsBits per second (bps)

bit/sBits per second (bps)

bits/sBits per second (bps)

Bits per second (bpsBits per second (bps))

kbpsKilobits per second (kbps)

kbits/sKilobits per second (kbps)

kbit/sKilobits per second (kbps)

Kilobits per second (kbpsKilobits per second (kbps))

MFSKMultiple Frequency Shift-Keying

Multiple Frequency Shift-Keying

OFDMOrthogonal Frequency-Division Multiplexing

Orthogonal Frequency-Division Multiplexing

COFDMCoded Orthogonal Frequency-Division Multiplexing

Coded Orthogonal Frequency-Division Multiplexing

CWContinuous Wave

Continuous Wave

ARQAutomatic Repeat reQuestAutomatic Repeat Query

Automatic Repeat reQuest

Automatic Repeat Query

FECForward Error Correction

Forward Error Correction

HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).

Hertz (HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).), unit of frequency, defined as one cycle per second (1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).).

KHzKiloHertz (kHz) 10^3 Hz

kHzKiloHertz (kHz) 10^3 Hz

KiloHertz (kHzKiloHertz (kHz) 10^3 Hz) 10^3 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).

MHzMegaHertz (MHz) 10^6 Hz

MegaHertz (MHzMegaHertz (MHz) 10^6 Hz) 10^6 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).

GHzGigaHertz (GHz) 10^9 Hz

GigaHertz (GHzGigaHertz (GHz) 10^9 Hz) 10^9 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).

dBThe decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, here the strength of a received signal.

The decibel (dBThe decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, here the strength of a received signal.) is a logarithmic unit used to express the ratio of two values of a physical quantity, here the strength of a received signal.

USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)

Upper Side Band Modulation (Radio, referring to reception and modulation mode)

Universal Serial Bus (Computer, referring to USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) Ports and cables)

LSBLower Side Band Modulation

Lower Side Band Modulation

AMAmplitude Modulation

Amplitude Modulation

FMFrequency Modulation

Frequency Modulation

NFMNarrowband Frequency Modulation

Narrowband Frequency Modulation

WFMWideband Frequency Modulation

Wideband Frequency Modulation

SSBSingle-sideband modulation

Single-sideband modulation

DSBDual Side Band Modulation

Dual Side Band Modulation

ISBIndependent Side Band Modulation

Independent Side Band Modulation

VSBVestigial Sideband Modulation

Vestigial Sideband Modulation

CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R)

Comité Consultatif International pour la Radio (Predecessor of the ITU-R)

VFTVoice Frequency Telegraphy

Voice Frequency Telegraphy

ALEAutomatic Link Establishment

Automatic Link Establishment

RTTYRadio TeleTYpe

Radio TeleTYpe

FDMAFrequency Division Multiple Access

Frequency Division Multiple Access

CDMACode Division Multiple Access

Code Division Multiple Access

TDMATime Division Multiple Access

Time Division Multiple Access

STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO).

NATONorth Atlantic Treaty Organization Standardization Agreement (STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO).), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATONorth Atlantic Treaty Organization).

NATONorth Atlantic Treaty Organization

North Atlantic Treaty Organization

CISCommonwealth of Independent States (CIS), the former Soviet Republic

Commonwealth of Independent States (CISCommonwealth of Independent States (CIS), the former Soviet Republic), the former Soviet Republic

PTTPush To TalkPress to TransmitMinistries of Postal, Telephone, and Telegraph Service (Soviet Agency)

Push To Talk

Press to Transmit

Ministries of Postal, Telephone, and Telegraph Service (Soviet Agency)

TXTransmit

Transmit

RXReceive

Receive

FAPSIFederal Agency of Government Communications and Information (Russian Agency)

Federal Agency of Government Communications and Information (Russian Agency)

ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards.

European Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards.

APRSAutomatic Packet Reporting System, an amateur radio-based system for real time tactical digital communications of information of immediate value in the local area

Automatic Packet Reporting System, an amateur radio-based system for real time tactical digital communications of information of immediate value in the local area

QRPIn amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range.

In amateur radio, QRPIn amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range. operation refers to transmitting at reduced power while attempting to maximize one's effective range.

ARCSAutomatic Radio Control System

Automatic Radio Control System

ISSInformation Sending Station in an ARQ link (The station sending information to the recipient). Usually the signal that's longer in duration than the short RQ (Repeat Request) bursts from the IRS.

Information Sending Station in an ARQAutomatic Repeat reQuestAutomatic Repeat Query link (The station sending information to the recipient). Usually the signal that's longer in duration than the short RQ (Repeat Request) bursts from the IRSInformation Receiving Station in an ARQ link (The station receiving information from the ISS. Will send RQ's (Repeat Request) to let the ISS know the information was received successfully..

IRSInformation Receiving Station in an ARQ link (The station receiving information from the ISS. Will send RQ's (Repeat Request) to let the ISS know the information was received successfully.

Information Receiving Station in an ARQAutomatic Repeat reQuestAutomatic Repeat Query link (The station receiving information from the ISSInformation Sending Station in an ARQ link (The station sending information to the recipient). Usually the signal that's longer in duration than the short RQ (Repeat Request) bursts from the IRS.. Will send RQ's (Repeat Request) to let the ISSInformation Sending Station in an ARQ link (The station sending information to the recipient). Usually the signal that's longer in duration than the short RQ (Repeat Request) bursts from the IRS. know the information was received successfully.

OTHOver The Horizon (very long range)

Over The Horizon (very long range)

ECCMElectronic Counter-CounterMeasures (ECCM) is a part of electronic warfare which includes a variety of practices which attempt to reduce or eliminate the effect of electronic countermeasures (ECM) such as jamming. ECCM is also known as electronic protective measures (EPM), chiefly in Europe.

Electronic Counter-CounterMeasures (ECCMElectronic Counter-CounterMeasures (ECCM) is a part of electronic warfare which includes a variety of practices which attempt to reduce or eliminate the effect of electronic countermeasures (ECM) such as jamming. ECCM is also known as electronic protective measures (EPM), chiefly in Europe.) is a part of electronic warfare which includes a variety of practices which attempt to reduce or eliminate the effect of electronic countermeasures (ECMAn Electronic CounterMeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar or jam communication links. It may be used both offensively and defensively to deny information to an enemy.) such as jamming. ECCMElectronic Counter-CounterMeasures (ECCM) is a part of electronic warfare which includes a variety of practices which attempt to reduce or eliminate the effect of electronic countermeasures (ECM) such as jamming. ECCM is also known as electronic protective measures (EPM), chiefly in Europe. is also known as electronic protective measures (EPM), chiefly in Europe.

w/with

with

ECMAn Electronic CounterMeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar or jam communication links. It may be used both offensively and defensively to deny information to an enemy.

An Electronic CounterMeasure (ECMAn Electronic CounterMeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar or jam communication links. It may be used both offensively and defensively to deny information to an enemy.) is an electrical or electronic device designed to trick or deceive radar, sonar or jam communication links. It may be used both offensively and defensively to deny information to an enemy.

MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office.

Mobile Data Terminal, A mobile data terminal (MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office.) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office.

msmilliseconds (.001 of a second)

milliseconds (.001 of a second)

PITPassenger Information Terminals, such as bus timetable displays at bus stops

Passenger Information Terminals, such as bus timetable displays at bus stops

IBOCIn-Band On-Channel (IBOC) is a hybrid method of transmitting digital radio and analog radio broadcast signals simultaneously on the same frequency.

In-Band On-Channel (IBOCIn-Band On-Channel (IBOC) is a hybrid method of transmitting digital radio and analog radio broadcast signals simultaneously on the same frequency.) is a hybrid method of transmitting digital radio and analog radio broadcast signals simultaneously on the same frequency.

ACFAutoCorrelation Function

AutoCorrelation Function

EOTEnd of Transmission

End of Transmission

IQQuadrature signals form the basis of complex RF signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis.

Quadrature signals form the basis of complex RFRadio Frequency signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis.

IPInternet protocol

Internet protocol

EMIElectromagnetic interference

Electromagnetic interference

RFIa specific subset of electrical noise on the Electromagnetic interference (EMI) spectrum

a specific subset of electrical noise on the Electromagnetic interference (EMIElectromagnetic interference) spectrum

IOTInternet of Things

IoTInternet of Things

Internet of Things

VSWRVoltage Standing Wave Ratio, a measurement of the accuracy of impedance matching at a point of connection. It is expressed as a ratio e.g. 1.3:1

Voltage Standing Wave Ratio, a measurement of the accuracy of impedance matching at a point of connection. It is expressed as a ratio e.g. 1.3:1

LNBLow Noise Block converter

Low Noise Block converter

BUCBlock Up Converter, a combination of Up converter and Power Amplifier.

Block Up Converter, a combination of Up converter and Power Amplifier.

EMCElectromagnetic compatibility - Extent to which electrical appliances can withstand each others radiated fields

Electromagnetic compatibility - Extent to which electrical appliances can withstand each others radiated fields

EIRPpower transmitted from an antenna.EIRP=Power +Antenna Gain. EIRP and Power is expressed in dBW, but Gain in dBi.

power transmitted from an antenna.EIRPpower transmitted from an antenna.EIRP=Power +Antenna Gain. EIRP and Power is expressed in dBW, but Gain in dBi.=Power +Antenna Gain. EIRPpower transmitted from an antenna.EIRP=Power +Antenna Gain. EIRP and Power is expressed in dBW, but Gain in dBi. and Power is expressed in dBW, but Gain in dBidecibel isotropic – the forward gain of an antenna compared with the hypothetical isotropic antenna, which uniformly distributes energy in all directions..

dBidecibel isotropic – the forward gain of an antenna compared with the hypothetical isotropic antenna, which uniformly distributes energy in all directions.

decibel isotropic – the forward gain of an antenna compared with the hypothetical isotropic antenna, which uniformly distributes energy in all directions.