The amazing progress. made in all branches of science during the past thirty years is par ticularly well illustrated in the rapid develop ment of radio. The top illustration shows Mar coni ag a young man, experimenting with a crude prototype of the modern highly efficient transmitter, while below it is shown a typical modern receiver.
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https://paperspast.natlib.govt.nz/periodicals/RADREC19320826.2.9.2
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Radio Record, Volume VI, Issue 7, 26 August 1932, Page 3
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56The amazing progress. made in all branches of science during the past thirty years is par ticularly well illustrated in the rapid develop ment of radio. The top illustration shows Mar coni ag a young man, experimenting with a crude prototype of the modern highly efficient transmitter, while below it is shown a typical modern receiver. Radio Record, Volume VI, Issue 7, 26 August 1932, Page 3
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