Marconi Succeeds: First Transatlantic Radio Signal Sent
Guglielmo Marconi catches a faint "S" in Morse code at Signal Hill, proving wireless telegraphy can span the Atlantic Ocean. This breakthrough instantly shatters the belief that communication requires physical cables, launching the era of global instant messaging and transforming maritime safety forever.
December 12, 1901
125 years ago
Key Figures & Places
radio
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Guglielmo Marconi
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St John's, Newfoundland
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Signal Hill, Newfoundland and Labrador
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Guglielmo Marconi
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Signal Hill, St. John's
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St. John's, Newfoundland and Labrador
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Radio broadcasting
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Cornwall
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Newfoundland (island)
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Radio
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Atlantic Ocean
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Morse code
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Signal Hill
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Canada
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Radio receiver
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