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A man named Heinrich hertz established that you could transmit and receive electric waves wirelessly.He proved it ws possible but dent do anything with it. He wasn't thinking about radio , he was thinking about electricity. -
He had a Huge breakthrough where he figured out how to send a signal of greater range by raising the height of the attend -
Macroni sent his first transatlantic message from Ireland to Newfoundland Canada and first transatlantic message from the us was sent to mattchetutes to uk
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Radio became a messenger Which means we listened to messages from the navy, weather reports and lectures. -
Wear aired a 10 minute commercial about an apartment charging $50 -
The radio became a get a way for people to be entertained Amos and Andy was one the biggest shows tooken place during the golden Era.
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Edwin armstrong created fm to allow high dynamic range to sound better. In the morning (am) we hear news and entertainment. Now in days we hear jazz, rock, r&nb.. etc..