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Edwin Howard Armstrong (December 18, 1890 [2] – February 1, 1954 [3]) was an American electrical engineer and inventor who developed FM (frequency modulation) radio and the superheterodyne receiver system.
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 ]
The film focused primarily [5] on the three pioneers [6] of radio in America: Lee de Forest, Edwin Howard Armstrong, and David Sarnoff. [7] The program interspersed audio and musical highlights of "old time" radio with the stories, achievements, failures, scams and bitter feuds between each of the main protagonists. [8]
ISBN 0-8129-0672-1 (cloth) – A thoughtful biography by an early associate of Sarnoff's. Lewis, Tom. (1991). Empire of the Air: The Men Who Made Radio. New York: HarperCollins ISBN 978-0-06-018215-1 (cloth) ISBN 978-0-06-098119-8 – Profiles Sarnoff's life along with those of Edwin Armstrong and Lee De Forest, drawing on archival sources.
Edwin Howard Armstrong invented the superheterodyne receiver in 1918. [1] Armstrong and RCA (under David Sarnoff) had a business and technical relationship, that would last into the 1940s. Funded by RCA, Armstrong designed a radio that can receive stations easily without complex tuning or interference from other stations.
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It was constructed beginning in 1936 by Edwin Howard Armstrong in order to promote his invention of wide-band FM broadcasting. W2XMN was the first FM station to begin regular operations, and was used to introduce FM broadcasting to the general public in the New York City area.