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Radio is Predicted
Scottish physicist James Clerk Maxwell introduces the concept of electro-magnetic field and predicts the existence of radio waves. -
First Demonstration
American dentist Mahlon Loomis successfully demonstrates "wireless telegraphy." -
Another Demonstration
German physicist Heinrich Rudolph Hertz demonstrates that electric current could be projected into space in the form of radio waves. -
Here's Marconi!
Italian inventor G. Marconi sends and receives his first radio signal. -
Marconi Again
Marconi flashes his first wireless signal across the English Channel. -
More Marconi
Marconi receives the letter "S" telegraphed from England to Newfoundland. -
Marconi is the Man!
The first successful transatlantic radiotelegraph message occurs. -
Radio Enters the Home
Crystal sets become available for Americans to purchase. -
Radio Stations Begin
Pittsburgh station KDKA becomes the first radio station. -
Radio Networks
RCA and NBC become the nation's first radio networks. -
Amos and Andy
The incredibly popular 'Amos and Andy' radio program debuts. -
Everyone Owns a Radio
95% of American homes contain at least one radio. -
Here Comes Television
Even in its infancy, television begins to eclipse radio in popularity. -
Rock and/or Roll
Bill Haley's song "Rock Around the Clock" debuts; radio is launched into a new era with the birth of rock and roll and the Top 40 format. -
FM is Born
Though it would take many years to gain momentum, FM radio is officially introduced. -
FM Takes Over
FM's listeners is now equal to that of AM; one year later in 1980, FM will pass AM for good.