CEPT
Conférence Européenne des administrations des Postes et des Télécommunications.
aka: the European Conference of Postal and Telecommunications Administrations.
CW Operators' Club
The Morse Code club.
ETSI
The European Telecommunications Standards Institute.
IARU
The International Amateur Radio Union.
ITU
The International Telecommunication Union.
List of Amateur Radio Organizations
OFCOM
The Office of Communications.
RSGB
The Radio Society of Great Britain.
WARC (ITU)
World Administrative Radio Conference.
WRC (ITU)
World Radiocommunication Conference.
End of Section
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Amateur Radio
Amateur Radio Callsigns
aka Call Signs
Amateur Radio Callsigns (UK)
aka Call Signs
Amateur Radio Contesting
Games and competitions.
Amateur Radio Direction Finding
Tracking, stalking and hunting.
Amateur Radio Emergency Communications
Amateur Radio Homebrew
DIY radio.
Amateur Radio International Operation
Amateur Radio Operating Awards
Amateur Radio Satellite
Amateur Radio Software
Including: WSJT, FSK441, JT6M, JT65.
Amateur Radio Stations
AMTOR
Amateur Teleprinting Over Radio.
ATV
Amateur Television, aka Fast Scan Television (FSTV).
D-STAR
Digital Smart Technologies for Amateur Radio.
DXing
Very long range communications.
DX-pedition
DXing while on an expedition to the middle of nowhere. See also Portable Operations.
Friendship Radiosport Games
High Speed Telegraphy
A type of competition.
History of Amateur Radio
IRLP
Internet Radio Linking Project.
Portable Operations
High powered radio operations in the field. See also DX-pedition.
QRP Operations
Low powered radio operations.
QSK Operations
Full break in Morse Code.
QSL Card
Radiosport
RAYNET
The Radio Amateurs Emergency Network.
Skywarn
A weather reporting and warning service.
Special Event Stations
Vintage Amateur Radio
World Radiosport Team Championship
End of Section
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16 Line Message Format
ACP-131 (Q & Z Codes)
Amateur Radio Codes and Alphabets
APRS Calling
Brevity Codes
Callsigns
aka Call Signs (In General)
CQ Calls
Five by Five
Message Precedence
Morse Code
Morse Code Abbreviations
Morse Code Prosigns
Multiservice Tactical Brevity Code
NATO Phonetic Alphabet
Plain Language Radio Checks
Procedure Words
Q-Code
RST Code
Z-Code
End of Section
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IMPORTANT: The following links are provided just for interest, as many of the procedures described are illegal for civilians to use. However passive and non-interfering actions that do not break the law can be considered for use in airsoft wargames.
Communications Security (COMSEC)
Electronic Counter-Counter Measures (ECCM)
Electronic Counter Measures (ECM)
Electronic Warfare (EW)
Electronic Warfare Support (EWS)
Man In The Middle Attack (MITMA)
Military Communications
PGP (Pretty Good Privacy) Word List
Radio Jamming
Signals Intelligence (SIGINT)
The Military Wireless Museum
A private museum created by Ben Nock and located in Kidderminster, Worcestershire in the UK, it uses his amateur radio callsign G4BXD.
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This second part contains links of a technical nature, for general radio pages see Part 1 above.
The following link is to an incomplete Wikibook, which has some useful sections that are well written and explained, especially the basics. It's just a pity that it remains unfinished:
Amateur Radio Manual
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Electronics
Index of Electronics Articles
Alphabetical Listing:
Admittance (Siemens)
Alternating Current (AC)
Alternator
Amplifier
Analogue Electronics
Anode
Balun
Battery (electricity)
Biasing
Breaking Capacity
Bridge Circuit
Capacitance (Fared)
Capacitance Multiplier
Capacitor (electronic component)
Capacitor Types (electronic component)
Cathode
Charge (Coulomb)
Circuit Design
Circuit Diagram
Commutator (electronic component)
Complex Gain (electronics)
Conditional Short Circuit Current
Constant Current
Crosstalk
Current (Ampere)
Current Divider
Current Limiting
Current Source
Damping Factor
Damping Ratio
DC Bias
Diffraction
Dielectric
Digital Electronics
Diode (electronic component)
Diode Bridge
Dipole Field Strength in Free Space
Direct Current (DC)
Dissipation Factor
Dummy Load
Dynamo
Electrical Breakdown
Electrical Conductor
Electrical Engineering
Electrical Insulator
Electrical Load
Electrical Network
Electric Displacement Field (Coulomb per Square Metre)
Electric Field (Volt per Metre)
Electric Flux (Volt⋅Metre)
Electric Generator
Electricity
Electric Potential
Electric Shock
Electric Susceptibility (dimensionless)
Electrode
Electrolysis
Electrolyte
Electrolytic Cell
Electromagnet
Electromagnetic Compatibility
Electromagnetic Coil
Electromagnetic Induction
Electromagnetic Interference
Electromagnetic Radiation
Electromagnetic Radiation And Health
Electromagnetic Wave Equation
Electromagnetism
Electromotive Force (Volt)
Electronic Circuit
Electronic Circuit Design
Electronic Color Code
Electronic Component
Electronic Oscillator
Electronic Symbol
Electrostatic Induction
Engine Generator
Equivalent Series Inductance (ESL)
Equivalent Series Resistance (ESR)
Field Strength
Filters (electronic)
Form Factor (electronics)
Gain (electronics)
Ground or Earth (electronics)
Impedance (Ohm)
Impedance Matching
Inductance (Henry)
Induction Loop
Inductor (electronic component)
Ingress Protection (IP)
Protection ratings against dirt and water.
Input Impedance
Interference (communications)
Inverter (DC to AC)
LC Circuit
Leakage
Linear Amplifier
Magnetic Field (Tesla)
Magnetic Flux (Weber)
Magnetic Susceptibility (dimensionless)
MOSFET
Nominal Impedance
Ohm's Law
Output Impedance
Oversampling (Signal Processing)
Permeability (Electromagnetism) (Henry per Metre)
Permittivity (Fared per Metre)
Phase Margin
Potential Difference (Volt)
Power (Watt)
Power Electronics
Power MOSFET
Power Supply
Prospective Short Circuit Current
RC Circuit
Reactance (Ohm)
Resonant Inductive Coupling
Rectifier (AC to DC)
Rectifier - Full Wave (AC to DC)
Rectifier - Half Wave (AC to DC)
Relay
Resistance and Conductance (Ohm)
Resistivity and Conductivity (Ohm⋅Metre)
Resistor (electronic component)
Resonance
Ringing (signal)
Ripple (electrical)
RL Circuit
RLC Circuit
Semiconductor
Series and Parallel Circuits
Sheath Current
Short Circuit
Signal (electronics)
Signal Integrity
Signal Noise (electronics)
Signal Processing
Signal Reflection (electronics)
Signal Reflection Bergeron Diagram (cables)
Signal Reflection Conducting Lines
Signal-to-Interference Ratio (SIR)
Signal-to-Noise Ratio (SNR)
Sine Wave
Skin Effect
Solenoid
Standby Power
Standing Wave
Step Response
Susceptance (Siemens)
Switch (electronic component)
Thyristor (electronic component)
Transformer
Transistor (electronic component)
Vacuum Tube (electronic component)
Voltage Divider
Voltage Drop
Voltage Regulator
End of Section
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Analogue Signals
Attenuation
Attenuation Distortion
Attenuation-to-Crosstalk Ratio (ACR)
Automatic Gain Control (AGC)
Automatic Link Establishment (ALE)
Automatic Packet Reporting System (APRS)
Capture Effect
Carrier Wave
Co-channel Interference (CCI)
Communications Reciever
CTCSS
"Continuous Tone-Coded Squelch System"
Crystal Radio
Digital Mobile Radio (DMR)
Digital Private Mobile Radio (dPMR)
Digital Signals
Direction Finding
Diversity Scheme
Duplex (Telecommunications)
Earth-Moon-Earth (EME) Communications
Echolink
Facsimile (FAX)
Fading
Fast Scan Tellevision (FSTV) aka ATV
Ground Constants aka ATV
Grounding Kit aka ATV
Hellschreiber, also referred to as either Feld-Hell, or Hell
High Speed Multimedia Radio
List of Telecommunications Encryption Terms
Packet Radio
PACTOR
Latin, meaning "The mediator".
Professional Mobile Radio (Licenced)
Push-To-Talk (PTT)
Q Factor
Radiation Burn (RF Burns)
Radio Direction Finder
Radio Frequency Engineering
Radio Frequency Filters
Radio Frequency Power Amplifier
Radio Reciever
Radio Reciever Design
Radio Transmitter
Radio Transmitter Design
Received Signal Strength Indication (RSSI)
Remote Base Station
Signal Strength in Telecommunications
Slow Scan Television (SSTV)
Software-Defined Radio
Squelch & DCS
"Digital-Coded Squelch"
Telegraphers Equations
Telegraphy Key (Morse Code)
TETRA (Terrestrial Trunked Radio)
Transceiver
Transmission_line
The special wire required to send radio frequency signals.
Transmitter Power Output (TPO)
Tropospheric Scatter
Trunked Radio System
Tuner (radio)
Two Way Radio (inc. Private Mobile Radio)
Types of Radio Emissions
Voice over Internet Protocol (VoIP)
VOX
"Voice Operated eXchange"
Walkie Talkie
Wireless Power Transfer
End of Section
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The Basics:
Amateur Radio Frequency Allocations
What frequencies and modes are legal.
Frequency
Frequency Band
Hearing Range
Humans typically vary between circa 20 ~ 20,000 Hz (20 kHz).
Elephants can hear as low as 7 Hz.
Bats can hear up to 200,000 Hz (200 kHz).
The "Low Frequency" or "Long Wave" radio band: 30 ~ 300 kHz..
Radio Frequency (RF)
Wavelength
Numeric Listing By Band:
LF
2200 metre band
Just below the old
"Longwave" broadcasting band.
MF
600 metre band.
630 metre for Region 1 (inc. UK)
HF
160 metre band.
80 metre band.
60 metre band.
40 metre band.
30, 17 and 12 metre bands
aka the WARC bands.
World Administrative Radio Conference.
20 metre band.
15 metre band.
VHF
10 metre band.
6 metre band
aka the "Magic" band.
4 metre band.
2 metre band.
UHF
70 centimeter band.
23 centimeter band.
13 centimeter band.
SHF
9 centimeter band.
5 centimeter band.
3 centimeter band.
1.2 centimeter band.
EHF
6 millimeter band
4 millimeter band
2.5 millimeter band
2 millimeter band
THF
1 millimeter band
Alphabetical Listing:
Critical Frequency
Electromagnetic Radiation
Electromagnetic Spectrum
Extremely High Frequency (EHF)
Frequency of Optimum Transmission (FOT)
See also LUF, MUF and Skywave.
High Frequency Band (HF) 3 ~ 30 MHz
Lowest Usable High Frequency (LUF)
See also FOT, MUF and Skywave.
Low Frequency Band (LF) 30 ~ 300 kHz
Includes the
"Longwave" broadcasting band.
Maximum Usable Frequency (MUF)
See also FOT, LUF and Skywave.
Medium Frequency Band (MF) 300 kHz ~ 3 MHz
Microwave
Radio Spectrum
Radio Wave
Shortwave Radio (SW)
Super High Frequency Band (SHF) 3 ~ 30 GHz
Tremendously High Frequency Band (MF) 300 kHz ~ 3 MHz
aka "Sub-millimeter" or Terahertz Radiation.
Very High Frequency Band (VHF) 30 ~ 300 MHz
Ultra Hhigh Frequency Band (UHF) 300 MHz ~ 3 GHz
End of Section
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Antenna Basics
Antenna (Radio)
Antenna Amplifier
Antenna Aperture
Antenna Ddiversity
Antenna Efficiency
Antenna Feed
Antenna Gain
Antenna Gain-To-Noise-Temperature
Antenna Measurement
Antenna Tuner
aka ATU or Antenna Tuning Unit.
Atmospheric Duct
BNC Connector
Coaxial Cable
aka coax or co-ax. See also "Antenna Feed" (above), "RF Connector" and "Twin-Lead" (below).
Directivity (Antenna)
Distributed Antenna System (DAS)
Indoor Distributed Antenna System (IDAS)
Outdoor Distributed Antenna System (ODAS)
Earth-Ionosphere Waveguide
Effective Radiated Power (ERP)
Electrical Length
EMF Measurement
Electro Magnetic Field.
E-Plane_And_H-Plane
E Region
aka the Kennelly-Heaviside layer.
Part of the Ionosphere.
Free-Space Path Loss
F Region
Part of the Ionosphere.
Friis Transmission Equation
Groundwave (Surface Wave)
Ionosphere
Ionospheric Absorption
Isotropic Radiator
Line-of-Sight Propagation
Link Budget
Loading Coil
Log-Distance Path Loss Model
Multipath Propagation
Near And Far Field
Non-Line-of-Sight Propagation
See "Groundwave" and "Skywave".
Propagation
Radiation Pattern
Radio Propagation Beacon
Radio Propagation Model
Rain Fade
Repeater (Amateur Radio)
RF Connector
See also "Coaxial Cable" above.
Skywave
Using the reflective qualities of the Ionosphere.
Sporadic E Propagation
Using the reflective qualities of the Ionosphere.
Standing Wave Ratio (SWR)
See also "SWR Meter"
Sudden Ionospheric Disturbance (SID)
Tropospheric Ducting
Twin-Lead
See "Antenna Feed" above.
Two-Ray Ground-Reflection Model
Upfade
Waveguide (electromagnetism)
Antenna Types:
Radio Frequency Antenna Types
Antennas Listed Alphabetically:
Antenna Array
AWX Antenna
Beam Steering Antenna
Choke Ring Antenna
Dipole Antenna
Directional Antenna
Fractal Antenna
Ground Plane (Antenna)
Helical Antenna
Inverted V Antenna
Log-periodic Antenna
Loop Antenna
Monopole Antenna
Near Vertical Incidence Skywave Antenna
Omnidirectional Antenna
Parabolic Antenna
Phased Array (Antenna)
Quad Antenna
Reconfigurable Antenna
Rectenna a power reciever
Rubber Duck Antenna
Sloper Antenna
T-Antenna
Tactical Vest Antenna System (TVAS)
Tower Array (Phased Array Antenna)
Whip Antenna
Wire Antenna
Yagi Antenna
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Modulation Methods
List of Radio Modulation Modes
List of Amateur Radio Modes
Modulation Methods Listed Alphabetically:
Amplitude And Phase Shift Keying (APSK)
Amplitude Equivalent (AME) aka CSBT
Amplitude Modulation
Amplitude Shift Keying (ASK)
Angle Modulation
Bandwidth (signal processing)
Code Division Multiple Access (CDMA) aka CDM
Code Division Multiplexing (CDM) aka CDMA
Compatible Side Band Transmission (CSBT) aka AME
Continuous Phase Modulation (CPM)
Continuous Wave
Frequency Division Multiple Access
Frequency Division Multiplexing (FDM)
Frequency Modulation
Frequency Shift Keying (FSK)
Independent Side Band Modulation (SSB)
Multiple Frequency Shift Keying (MFSK)
Multiplexing (Muxing)
Narrow Band
Olivia MFSK
On Off Keying (OOK)
Orthogonal Frequency Division Multiplexing (OFDM)
Phase Modulation
Phase Shift Keying (PSK)
PSK31 & QPSK31
PSK33 & QPSK63
Pulse Position Modulation (PPM)
Quadrature Amplitude Modulation (QAM)
Side Band Modulation
Single Carrier FDMA
Single Side Band Modulation (SSB)
Space Modulation
(used in instruments)
Spread Spectrum
Time Division Multiplexing (TDM)
Trellis Coded Modulation (TCM)
Ultra Wide Band
Wide Band
End of Section
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Units of Measure
SI Units
Electromagnetic SI Units
Speed of Electricity
Speed of Light (C)
Units Listed Alphabetically:
Ampere (Amp)
Coulomb
Decibel (dB)
Fared
Henry
Hertz (Htz)
Ohm
Siemens
Tesla
Volt
Watt
Weber
Measuring Instruments:
Ammeter (Current)
Capacitance Meter
Field Strength Meter
Multimeter
Ohmmeter (Resistance)
Q Meter
S Meter (Signal Strength)
SWR Meter (Standing Wave Ratio)
Volt Meter (Voltage)
VU Meter (audio volume)
Mathematics & Notation
Engineering Notation
Equation (Definition)
Expression (mathematics) (Definition)
Formula (Definition)
Inverse-Square Law (Definition)
List of Common Physics Notations
List of Mathematical Symbols
Mathematical Notation
Mathematics of Radio Engineering
Orders of Magnitude (Definition)
Physical Constant (Definition)
Power of 10 (Definition)
RMS
Root Mean Square.
Scientific Notation
End of Section
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