On 12 December 1901, Guglielmo Marconi reported receiving the Morse letter 'S' at Signal Hill in St. John's, Newfoundland, transmitted from his station at Poldhu in Cornwall, England, about 3,500 km away. Although some historians question whether the faint signal was truly received, the event is generally credited as the first transatlantic radio transmission.
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On 12 December 1901, Guglielmo Marconi reported receiving the Morse letter 'S' at Signal Hill in St. John's, Newfoundland, transmitted from his station at Poldhu in Cornwall, England, about 3,500 km away. Although some historians question whether the faint signal was truly received, the event is generally credited as the first transatlantic radio transmission.
The year in which a wireless radio signal was first reported received across the Atlantic Ocean.
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Limits Registry. LR-FIRST-TRANSATLANTIC-RADIO-SIGNAL. First transatlantic radio signal. 2026.