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First Radio Signal
The first radio signal was made be an Ialian inventor. He send and received first radio signal in 1895. He was using the idea based on the Hertzian waves. -
Audion Tube
In 1906, Lee De Forest created the Audion Tube. A audion tube was a vacuum tube that amplified signals. It is said that a Canadian investor, Reginald Fessenden, actually came up with the idea. -
AM
AM= Amplitude Modulation. Modulation means change.
535KHz-1605KHz -
FM
Frequency Modulation
88-108Mhz -
8XK Aka KDKA
the first radio station to play tv on the radio. Still in Pittsburg, Penn. Founder Frank Conrad -
The dawn of advertising
WEAF toll broadcast for an apartment complex charging$50. -
Uncle Charlie
Uncle charlie was used for personal radio stations
- was too popular
-organized the liscensing of transmitters
-assigning radio stations frequenices,call letters, power limits. -
Golden Era
The Golden Era was during 30s-40s. In the middle of the Great Depression it (radio) provided an escape. -
Family Medium
Family Medium are shows were the entire family can enjoy. Show like Gun Smoke, Superman, and Amos n Andy.
- Dramas, story hour, big band music and Sit Com. -
radio progression
Major Edwin Armstrong invented the FM transmitter
better sound and stronger signals. which made people upgrade to the better verison.
