This week marks the 100th anniversary of the world's first intercontinental radio transmission. On September 29, 1915, a U.S. naval radio station in Arlington, Virginia initiated a transmission to another naval radio station on Mare Island in San Francisco, California, which then relayed to Honolulu, Hawaii.
The demonstration was a joint public-private venture coordinated through defense contracts with the American Telephone & Telegraph Co. (AT&T) and the Western Electric Co., using equipment installed at radio stations under Navy jurisdiction.
This photograph from Hagley Library's David Sarnoff papers (Accession 2464.55) collection, taken a few years later in 1921, shows the RCA executive David Sarnoff at the company's Transoceanic Station at New Brunswick, New Jersey. The station was built by the Marconi Wireless Telegraph Company of America in 1914. During World War I, it was used by the U.S. Navy, and was the primary station tasked with transmitting and…Read more...