![]() AM radio served the nation well, but a desire for greater fidelity and immunity from atmospheric interference got experimenters (specifically Edwin Armstrong) working on the FM process. By the 1930s, the early phase of technology was maturing with superheterodyne radios and receivers being the norm and some great sets being made by communications specialists like Hammarlund and Hallicrafters and by radio set makers such as E.H. Our contributor David Smith (not to be confused with David "Anonymous" or David Rich) kicks things off with this essay.ĪM radio has a long, rich history, with the first commercial U.S. Granted to quote our text so long as proper credit is given.ĮBay listings that quote us incorrectly or without credit may be
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