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Crystal radio

A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. It uses only the power of the received radio wave to produce sound, needing no external power supply. It is named for its most important component, a crystal detector, originally made from a piece of crystalline mineral such as galena.…

History, Applications & Measurement

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Overview

Basic principles

Design

History

Use as a power source

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Map overview Semantic statistics

Crystal radio

Nodes227
Edges226
Triples139
Avg. degree1.99
Density0.008811
Components1

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Crystal radio

Top relations

related to Further reading · 43
Crystal radio → Apr, Bureau, BVWS Books, C-120, Circuits Used, CMOS Radio-Frequency Integrated CircuitsDerek, Conduct, Connecting Wireless Instruments, Construction, Crystal, Design, Domestic British Crystal Sets, Elements, Ellery, Elmer Eustice Bucher, Fundamentals, HA Wheeler, Henley, History, Implementation
related to External links · 37
Crystal radio → Amplifier, April, Build Your Own No, Crystal Detectorshttp, Crystal Radio Explained How, Crystal Radio Set Systems, Crystal Radios History, Crystal RadiosBen Tongue's Technical, Crystal Set DX, Crystal Sets, Design, DETECTOR, Diodeshttp, Don, Gord, High Performance Crystal Radios, How, HTM Radio DetectorsThe Crystal, Improvement, Measurements
related to Use during the broadcast era · 12
Crystal radio → AM, But, Detefon, Florida, Germany, Heliogen, In, Jazz Age, Lee De Forest, Popular Science, Swedish, The
related to Earphones · 9
Crystal radio → Both, Each, In, Standard, The, Therefore, They, This, When
related to Basic principles · 7
Crystal radio → An, Early, In, It, Modern, One, The
related to Antenna · 6
Crystal radio → AM, Antennas, However, Serious, Since, The
related to Use during the radiotelegraphy era · 6
Crystal radio → Around, During, For, Long-distance, Until, World War
related to Post World War II to present · 4
Crystal radio → After World War II, In, So, The
related to Design · 3
Crystal radio → Commercial, Many, The
related to Use as a power source · 3
Crystal radio → DC, There, With

Important terminology Word statistics

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Important terminology

crystal radio detector used antenna circuit receiver radios receivers sets frequency tuned coil first detectors could current waves power wire

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
galenainstance oforiginally made from a piece of crystalline mineral0.80text
Crosley Radio Corporation marketed inexpensive crystal receivers during the early broadcasting boom.Around 1920instance ofManufacturers0.80text
crystal sets were superseded by the first amplifying receiversinstance ofManufacturers0.80text
which used vacuum tubesinstance ofManufacturers0.80text
galena with a fine wire touching its surfaceinstance ofconsisting of a small piece of crystalline mineral0.80text
Marconiinstance of1916A crystal receiver used in long distance Telefunken radiotelegraphy stationsWireless telegraphy companies0.80text
Telefunken manufactured sophisticated inductively coupled crystal radios as communication receivers in ship radio roomsinstance of1916A crystal receiver used in long distance Telefunken radiotelegraphy stationsWireless telegraphy companies0.80text
shore stationsinstance of1916A crystal receiver used in long distance Telefunken radiotelegraphy stationsWireless telegraphy companies0.80text
the SCR-54 were part of portable radiotelegraphy stations carried by army troops in World War 1 to communicate with their commanders behind the linesinstance ofLightweight crystal radios0.80text
Crystal radiorelated to AntennaThe0.60section
Crystal radiorelated to AntennaSince0.60section
Crystal radiorelated to AntennaAntennas0.60section

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    Min side: 3
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