LINKS: Edwin H. Armstrong Radio's premier inventor, Edwin H. Armstrong was responsible for the Regenerative Circuit (1912), the Superheterodyne Circuit (1918), the Superregenerative Circuit (1922) and the complete FM System (1933). His inventions and developments form the backbone of Radio Communications as we know it. (Added: Fri Jan 30 1998 Hits: 324 Rating: 0.00 Votes: 0)   Rate It   Review It