![]() An FM transmission from a friend's house in Yonkers came in strong, clear, and static-free. During the demonstration, he turned on his FM receiver in front of the audience. By 1934 he had filed a series of patents.Īfter years of painstaking experiments, he was able to prove in a demonstration at Columbia University in 1935 that wideband FM made possible a drastic reduction of noise and static. When conventional wisdom of the era held that FM radio would never work, Armstrong pursued FM by himself. The legal battles continued until he committed suicide in 1954.Īrmstrong was posthumously elected by the International Telecommunications Union in Geneva to the roster of electrical greats to stand beside Alexander Graham Bell and Guglielmo Marconi.Īrmstrong was a free thinker. In various cases, several of Columbia's faculty members of the Department of Electrical Engineering testified for him and several graduates of Columbia's Law School represented Armstrong throughout his career. His legal battles began with a series of feuds and litigation over rights to, and control of, his inventions shortly after the end of World War I. That way, he could avoid administrative work (and even teaching), allowing him to devote his energies to work on the FM radio. When he returned to Columbia after the World War I, Armstrong accepted no salary from the university. He sold that patent, as well as one for another invention-the superregenerative receiver-and by 1923 he was a millionaire. The circuit remains a basic component of nearly all modern radio and TV receivers, as well as many types of cellular phones and other communications devices.Īrmstrong filed for a patent for his superheterodyne circuit in 1918 and two years later the patent was issued. It was a complex, eight-tube receiver known as the superheterodyne circuit that amplified weak signals to a degree previously impossible. He developed one of his most useful inventions when he was a captain serving in France. Immediately after graduating, he was invited back to work as an assistant professor.Īt the start of World War I he joined the Signal Corps. He entered Columbia University in 1909 to study in the Department of Electrical Engineering. 18, 1890 in New York and became interested in technology and science as a child. ![]() Tyrone Johnson cut the traditional birthday cake.Īrmstrong was born Dec. Strong, commander CECOM Life Cycle Management Command, and Command Sgt. The proceedings began with a brief biography of Armstrong's life and his contribution to modern telecommunications and radio. The building initially housed the Army Signal Corps museum and is now used as the Education Center here, where more than 4,000 training courses are offered annually. His work with radio changed the world.įittingly, the celebration took place in Armstrong Hall, Building 551, which was named after Armstrong on May 24, 1955. ![]() Much of Armstrong's work centered on the development of frequency modulation (FM) radio technology. ![]() Edwin Howard Armstrong's 119th birthday.Īrmstrong, who held dozens of patents, allowed the free use of those patents by the Army during World War II. 16, a couple days early, to celebrate the anniversary of what would have been Maj. Edwin Howard ArmstrongįORT MONMOUTH, N.J. "The continuous good fortune which has followed me, providing second chances at inventions when the first chance was missed and tossed away, has been all that a man could hope for and more than he has any right to expect." - Maj. Tyrone Johnson cut the Signal Corps insignia birthday cake at the celebration of what would have been the 119th birth of Maj. ![]()
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