Search results
Results from the WOW.Com Content Network
Armstrong's FM system was also used for communications between NASA and the Apollo program astronauts. A US Postage Stamp was released in his honor in 1983 in a series commemorating American Inventors. [60] Armstrong has been called "the most prolific and influential inventor in radio history". [61]
Armstrong charged that this reassignment had the covert goal of disrupting FM radio development, [10] however RCA's proposal prevailed, and on June 27, 1945 the FCC announced the reassignment of the FM band to 80 channels from 88–106 MHz (which was soon expanded to 100 channels from 88–108 MHz), while allocating the former FM band ...
It belongs to FM radio station KWNR, in Henderson, Nevada, and broadcasts at 95.5 MHz. FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to transmit high-fidelity sound over broadcast radio.
Westinghouse buys DeForest's and Armstrong's patent. 1920s: Radio was first used to transmit pictures visible as television. 1926: Official Egyptian decree to regulate radio transmission stations and radio receivers. [40] Early 1930s: Single sideband (SSB) and frequency modulation (FM) were invented by amateur radio operators. By 1940, they ...
In 1933, FM radio was patented by inventor Edwin H. Armstrong. [74] FM uses frequency modulation of the radio wave to reduce static and interference from electrical equipment and the atmosphere. In 1937, W1XOJ, the first experimental FM radio station after Armstrong's W2XMN in Alpine, New Jersey, was granted a construction permit by the US ...
Esther Marion Armstrong was the widow of pioneering radio FM inventor Edwin Howard Armstrong. She is notable for continuing — and winning — her husband's patent lawsuits against some of America's largest electronics manufacturers after his suicide. [ 1 ]
An American FM radio transmitter in Buffalo, NY at WEDG. Edwin Howard Armstrong (1890–1954) was an American electrical engineer who invented wideband frequency modulation (FM) radio. [12] He patented the regenerative circuit in 1914, the superheterodyne receiver in 1918 and the super-regenerative circuit in 1922. [13]
1915 Armstrong regenerative receiver. The inventor of FM radio, Edwin Armstrong, filed US patent 1113149 in 1913 about regenerative circuit while he was a junior in college. [31] He patented the superregenerative circuit in 1922, and the superheterodyne receiver in 1918.