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 ...

After 102 years on AM, ABC Radio Perth has switched to 102.5 FM due to transmission issues and interference affecting sound quality. The 720 AM signal is set to be permanently turned off in late April ...

THE manner in which this book has been written enables any one of the subjects mentioned in the title to studied alone ; but there are sufficient cross-referenced to indicate the relationships between ...

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 ...

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 ...

Background Genetic studies of stool frequency (SF), an indirect proxy for gastrointestinal transit, may reveal therapeutically tractable pathways relevant to IBS and other dysmotility disorders.