Mr W.Eccles, Prof. of Applied Physics and Electrical Engineering at the City and Guilds of London Technical College and Vice Chairman of the Commiddion which planned the Imperial Wireless Chain Stations, gace a demonstration at a Physical Society gathering at the Imperial College of Science, South Kensington, of remarkable apparatus devised to test a proposed method of wireless communication in which the electric waves transmitted could produce easily recognisable chords at a suitably eqipped receiving station, with vowel sounds as the most easily equipped receiving station. 14 November 1924
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