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When did Guglielmo Marconi receive a radio message in Argentina from Ireland?
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Guglielmo Marconi
Italian physicist Guglielmo Marconi, shown here about 1908, invented a successful wireless telegraph (that is, a radio) in 1896.
Guglielmo Marconi received radio messages in Buenos Aires, Argentina, from Clifden, Ireland, in 1910. This transmission covered a distance of approximately 9,650 km (6,000 miles) using a wavelength of about 8,000 metres.12