review from 2016: ”The Network” the origin of RCA & Radio

Two significant innovators birthed the broadcast world: brilliant inventor Edwin Armstrong and his long-time friend , businessman David Sarnoff. Armstrong's "regeneration device" built on Lee deForest's Audio tube to send radio signals hundreds of miles rather just a few blocks. Sarnoff saw the potential for a national network of radio stations broadcasting to millions of consumers who would buy the radio sets his corporation (RCA) would build. They broke ranks over the significance of Armstrong's newest invention, FM Radio (which would have forced the manufacturers and consumers of AM to discard their sets in favor of a clean static-free sound). Eventually Sarnoff's labs created TV which would use FM for the audio signal, but Armstrong's decades of legal battles with deForest and RCA wore him out . I talk to the author in a podcast from 2016, which cal be found at