WIRELESS IN A WALNUT SHELL
A miniature wireless crystal set, which fits into an ordinary walnut shell, has, been made by an English boy of fifteen years. It is quite complete in every way, and works two pairs of headphones at a distance of a mile and a half from the relay station. --- 22 gee 20 eee 2 oie, 2 eee, 6 eee, 2 oes, 2
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https://paperspast.natlib.govt.nz/periodicals/RADREC19280309.2.52.12
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Radio Record, Volume I, Issue 34, 9 March 1928, Page 15
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66WIRELESS IN A WALNUT SHELL Radio Record, Volume I, Issue 34, 9 March 1928, Page 15
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