On Christmas Eve of 1906, Reginald Fessenden broadcast the first radio program from Ocean Bluff-Brant Rock, Massachusetts. The Westinghouse engineers invented the vacuum tube detector (an amplifier) which led to the use of a synchronous rotary-spark transmitter (an early radio transmitter) for this first radio broadcast. Ships at sea heard the broadcast and included a … Continue reading Edwardians: First Radio Broadcast