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.
Radio in the United States
In late 1906, Reginald Fessenden demonstrated an alternator transmitter at Brant Rock, Massachusetts, and many years later stated that he had also conducted broadcasts on the evenings of December 24 and 31. However following this he concentrated on point-to-point transmissions and made no further efforts towards establishing organized broadcasting.