radio communication

Edwin Armstrong and Frequency Modulation

Edwin Armstrong and Frequency Modulation

On December 18, 1890, American electrical engineer and inventor Edwin Howard Armstrong was born. Armstrong is best known for developing FM (frequency modulation) radio. He held 42 patents and received numerous awards, including the first Medal of Honor awarded by the Institute of Radio Engineers. Early Years Edwin Armstrong was the first of three children of John Armstrong and Emily Smith Armstrong. His father was a representative of the US branch of…
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Alexander Popov and his Radio Receiver

Alexander Popov and his Radio Receiver

On March 4, 1859, Russian physicist Alexander Stepanovich Popov was born. Alexander Popov is acclaimed in his homeland and eastern European countries as the inventor of radio. In 1895 he presented a paper on a wireless lightning detector he had built that worked via using a coherer to detect radio noise from lightning strikes. Born in the town Krasnoturinsk, Sverdlovsk Oblast in the Urals as the son of a priest, Popov became interested in…
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