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Scientific American

March 1, 1941

1 min read

Radio Changes its Tune

How Industry Produces Crystals that Hold Broadcasting Stations on their Frequencies

By H. T. Rutledge

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This article was originally published with the title “Radio Changes its Tune” in Scientific American Magazine Vol. 164 No. 3 (March 1941), p. 141
doi:10.1038/scientificamerican0341-141

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