Roberto Landell de Moura

Father Roberto Landell de Moura (January 21, 1861 – June 30, 1928), commonly known as Roberto Landell, was a Brazilian Roman Catholic priest and inventor. He is best known for his attempts in the 1880s to develop long-distance audio transmissions device that combined an improved megaphone device and a photophone (using light beams). Landell received patents in Brazil and the United States during the first decade of the 1900s in which he also included designs that he claimed could transmit voice using radio waves. Provided by Wikipedia