-
Marconi
Italian inventor,sent and received first Radio signal in 1895. -
Audion Tube
In 1906, Lee De Forest, created(or "borrowed" the idea for) the audion tube, a vacuum tube that amplified signals. -
KDKA Newsradio 1020
Was founded in 1920.8XK, later renamed KDKA, by Frank Conrad. Still around today broadcasting out of Pittsburg Pennsylvania. -
The Dawn of Advertising
in 1922 WEAF aired a 10 min 'commercial' or toll broadcast, for an Apartment complex charging $50.
