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Marconi
Through is experiments in wireless telegraphy, Marconi developed the first effective system of radio communication. In 1899, he founded the Marconi Telegraph Company. In 1901, he successfully sent wireless signals across the Atlantic Ocean. Disproving the dominant belief of the Earth's curvature affecting transmission. -
Audion Tube
In November of 1906, Lee de Forest,adapted a Fleming valve by adding a wire grid between the bulb's filament and plate. The grid allowed the regulation of the flow of electrons between the filament and the plate, thus turning the tube into an amplifier. However, de Forest never did fully understand how or why it worked.He was referred to as the "father of radio" but his contribution to radio was like that of a father in the biological sense. -
Titanic Diaster
Problem with radio played a major role in the Titanic disaster of April 15, 1912, when the British passenger liner sank after hitting an iceberg in the mid-Atlantic.Although its owners boasted that the Titanic was the most modern ship of its day, the Marconi radio system that had been installed in the weeks before the disaster was already obsolete. It was not, as some have claimed, the best radio technology available. -
Radio Stations
The early stations gained new call signs. Many early stations were started by newspapers. 8XK became KDKA in 1920. KDKA received the first federal license and began broadcasting on November 2, 1920.
