Marconi Beach Marconi Beach Marconi Beach is part of the Cape Cod National Seashore in Massachusetts. The beach is named for Italian inventor Guglielmo Marconi. In 1903, the first transatlantic wireless communication originating in the United States was successfully transmitted from nearby Marconi Station; a message from U.S. President Theodore Roosevelt to King Edward VII of the United Kingdom. The beach was also used by the former Camp Wellfleet for artillery and rocket testing. There is a broad, sweeping view of the Atlantic Ocean and Cape Cod Bay from the overlook atop the steep sand cliff above the beach. The National Park
Guglielmo Marconi day during which the entire transatlantic path was in daylight. It is now known (although Marconi did not know then) that this was the worst possible choice. At this medium wavelength, long-distance transmission in the daytime is not possible because of heavy absorption of the skywave in the ionosphere. It was not a blind test; Marconi knew in advance to listen for a repetitive signal of three clicks, signifying the Morse code letter "S". The clicks were reported to have been heard faintly and sporadically. There was no independent confirmation of the reported reception, and the transmissions were difficult to