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|  | Edwin Howard Armstrong |  |
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| Radio FM (FREQUENCY MODULATION) | ||||
| Circuits or regeneration receiver reaction | ||||
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| New York 18.December.1890 New York 01.February.1954 | |||
| Inventor of radio receiver reaction,
and modulation
frequency. Entered
into conflict with large companies that accused American radio to
exploit its patent, and suicide throwing itself from 13 th floor of a
building on East River | ||||