Edwin H. Armstrong, Radio Pioneer – FM Radio and the Later Years

By the 1930s, millions of people around the world listen to news, sports, and their favorite shows on their AM (Amplitude Modulation) radios. But technological problems persist with AM – static and interference between stations. To clean up reception, Edwin Armstrong develops a totally new system: FM (Frequency Modulation) radio. Armstrong’s third major contribution to radio broadcasting eventually creates a new industry that continues to this day.