Unveiling of the
Guglielmo Marconi Monument
Marconi Hall 1938

On December 12, 1901, Guglielmo Marconi successfully transmitted the first transatlantic wireless signal. This groundbreaking event took place when a wireless signal, in the form of the Morse code letter "S" (three dots), was sent from Poldhu, Cornwall, England, and received by Marconi at Signal Hill in St. John’s, Newfoundland.

This achievement was a monumental step in communication technology, proving that wireless signals could travel vast distances, even across the curvature of the Earth, defying skeptics who believed radio waves would not follow the Earth's surface. Marconi's work laid the foundation for modern radio, wireless communications, and even satellite technology.