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David Hughes
David E. Hughes noticed that sparks could be heard in a telephone receiver when experimenting with his carbon microphone -
Heinreich Rudolf Hertz
Heinrich Rudolf Hertz was able to prove transmitted airborne electromagnetic waves in an experiment proving Maxwell's theory of electromagnetism -
Nikola Tesla
Nikola Tesla began developing his own system based on Hertz and Maxwell's ideas mainly as a means of wireless lighting and power distribution -
Marconi
Italian inventor Guglielmo Marconi built the first complete commercially successful wireless telegraphy system -
Roberto Landell de Moura
Brazilian priest Roberto Landell de Moura transmitted the human voice wirelessly for the first time over a 5 mile distance -
Audison Tube
The Ausdison Tube is an electromagnetic amplifying vacuum created by Lee De Forest who is ab American inventor. -
First radio broadcast
Reginald Fessenden used a synchronous rotary-spark transmitter for the first radio program broadcast -
Sports Broadcasting
Sports broadcasting began,the first ever college football on radio broadcast of a 1921 West Virginia vs. Pittsburgh football game
