Empire of the Air: The Men Who Made Radio

For 50 years, radio ruled the airwaves and the American consciousness as the first "mass medium", thanks to the genius and rivalries of three extraordinary men: Lee de Forest, a flamboyant son of a clergyman who invented the audion tube; Edwin Howard Armstrong, a brilliant inventor who pioneered FM technology; and David Sarnoff, a hard-driving Russian immigrant who created the most powerful communications company on earth. This is their story - a tale of friendship, enmity, and tragedy that shaped the course of radio's early success. Through interviews with historians, dramatists, and personalities from the era, Empire of the Air: The Men Who Made Radio brings to life the lives and achievements of these pioneers, whose contributions continue to echo through the airwaves today.