Lee de Forest, Pubic Domain.
Lee de Forest was an American inventor who was one of the earliest innovators of radio technology. On January 12, 1908, he conducted one of the first long range radio broadcasts from the Eiffel Tower in Paris. His life and career were marked by achievement, but also controversy.
Sources:
A Short History of Radio- FCC.gov
Lee de Forest- New World Encyclopedia
Lee de Forest and the Amplifying Audion- Institute of Electronics and Electrical Engineers