SCR-54
http://dbpedia.org/resource/SCR-54
The SCR-54 was a tunable, portable crystal radio receiver used by the U. S. Army during World War I for fire control in conjunction with airplanes.
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SCR-54
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50277593
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1097044268
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The SCR-54 was a tunable, portable crystal radio receiver used by the U. S. Army during World War I for fire control in conjunction with airplanes.
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3886