While fewer and fewer people are listening to FM radio today, it was hot stuff amid its widespread rollout during the late 1930s and early 40s. Short for frequency modulation, FM’s appeal compared to ...
Abstract: This paper proposes and demonstrates an arbitrarily tunable multi-frequency pulse modulation scheme based on an active fiber loop, which effectively suppresses the interference fading effect ...
Abstract: Frequency-hopping (FH) communication with the advantages of rapid and random carrier frequency switching poses significant challenges for conventional jamming methods to achieve real-time ...
The 1983 US Postal Service first-day cover for the 20-cent Edwin Howard Armstrong commemorative stamp from the American Inventors series, featuring a Colorado Silk cachet illustrating Armstrong at his ...
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