January 13, 2009

Hooray for radio

Today, January 13, marks the 99th anniversary of the first demonstration of radio.

January 13, 1910

First radio demonstration

Lee De Forest, the American inventor of the vacuum tube, broadcasts a live performance of Enrico Caruso from the Metropolitan Opera. The broadcast over a telephone transmitter could be heard only by the small number of electronics hobbyists who had radio receivers. De Forest started regular nightly concerts in 1915, increasing interest in radio receivers, which at the time depended on the vacuum tubes manufactured by De Forest's company.

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