My adventures in Ham radio, photography and other nerdy gadgets.
Saturday, April 18, 2009
Armstrong's Invention of Noise-Suppressing FM
The IEEE Communications Magazine has a monthly series History of Communications edited by Mischa Schwartz, professor emeritus of electrical engineering at Columbia University. This month's issue is on Edwin Armstrong's Invention of Noise-Suppressing FM. Armstrong is credited as the inventor of wide-band FM and was awarded a patent for his invention on December 26, 1933. That and other interesting information can be found in the four page article which is available at http://www.comsoc.org/livepubs/ci1/public/2009/apr/pdf/cihistory.pdf