Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar.
Ocean Bluff-Brant Rock, Massachusetts
In January 1906, Reginald Fessenden achieved the first two-way transatlantic radiotelegraph transmission, exchanging Morse code messages between his stations in Brant Rock and Machrihanish, Scotland. (Marconi had only achieved one-way transmissions prior to his date). On Christmas Eve, December 24, 1906, Fessenden transmitted from Brant Rock Station the first audio radio broadcast of music and entertainment in history. Radio operators on ships in the Atlantic heard a broadcast that included Fessenden playing the song "O Holy Night" on the violin and reading a passage from the Bible.