Year 1898.
5 November - Eugène Ducretet describes to the French Academy of Sciences Transmissions between the Eiffel tower and Pantheon in Paris (5 Km).
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Year 1897.
Eugène Ducretet (France) experiments with wireless telegraphy ; Guglielmo Marconi founds the Wireless Telegraph and Signal Company Ltd ., in London. Karl Ferdinand Braun (Germany) invents a device which completes '' the tuned circuit '', matching the wavelengt of transmitter and receiver, a procedure discovered by Sir Oliver Lodge (U.K.).