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Radio

Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves. They can be received by other antennas connected to a radio receiver; this is the…

History & Technology

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Overview

Etymology

History

Principles

Communication systems

Regulation

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Map overview Semantic statistics

Radio

Nodes166
Edges165
Triples116
Avg. degree1.99
Density0.012048
Components1

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Radio

Top relations

related to history · 33
Radio → AM, Atlantic Ocean, Augusto Righi, By December, During, During World War, Electromagnetic, Experiments, German, Guglielmo Marconi, Heinrich Hertz, Hertz, In, Jagadish Chandra Bose, James Clerk Maxwell, Karl Ferdinand Braun, KDKA, Lord Rayleigh, Manufacturing Company, Marconi
related to Communication systems · 16
Radio → AM, Amplitude, At, DAB, Different, FM, Frequency, Frequency-shift, FSK, In, In OFDM, It, OFDM, Orthogonal, The, Wi-Fi
related to Etymology · 10
Radio → Alexander Graham Bell, Ernest Mercadier, Following Hertz's, French, Hertzian, It, Latin, Marconi, The, Up
related to Further reading · 10
Radio → Analog Circuitry Explained, Basic Radio Principles, Cambridge University PressRadio Systems, Cambridge University PressRadio-Electronic Transmission, Elsevier Science, Elsevier ScienceThe Electronics, Engineering, Fundamentals, SciTech PublishingAnalog Electronics, Technology
related to Bandwidth · 8
Radio → BW, Different, Each, For, In, SB, So, The
related to Regulation · 8
Radio → In, Interference, International Telecommunication Union, ITU, The, To, Two, US
related to Principles · 4
Radio → An, As, Inverse-square, They
related to External links · 3
Radio → Dictionary, Merriam-Webster, OCLC
related to ITU frequency bands · 3
Radio → Each, It, The ITU
see also · 2
Radio → Electromagnetic, List

Important terminology Word statistics

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Important terminology

waves frequency signal used modulation communication receiver transmitter information called spectrum wireless systems wave signals first antenna transmitted carrier use

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Radiois atechnology of communicating using radio waves0.90text
GPSinstance ofIn radio navigation systems0.80text
VORinstance ofIn radio navigation systems0.80text
a mobile navigation instrument receives radio signals from multiple navigational radio beacons whose position is knowninstance ofIn radio navigation systems0.80text
and by precisely measuring the arrival time of the radio waves the receiver can calculate its position on Earthinstance ofIn radio navigation systems0.80text
Wi-Fi networksinstance ofa family of digital modulation methods widely used in high-bandwidth systems0.80text
cellphonesinstance ofa family of digital modulation methods widely used in high-bandwidth systems0.80text
digital television broadcastinginstance ofa family of digital modulation methods widely used in high-bandwidth systems0.80text
and digital audio broadcastinginstance ofa family of digital modulation methods widely used in high-bandwidth systems0.80text
trunked radio systemsinstance ofand the need to use it more effectively is driving many additional radio innovations0.80text
spread spectruminstance ofand the need to use it more effectively is driving many additional radio innovations0.80text
cell phonesinstance ofobtained by taking a test demonstrating adequate technical and legal knowledge of safe radio operation.Exceptions to the above rules allow the unlicensed operation by the public…0.80text

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