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ships
Radios began to appear at seas and on ships. this allowed communicaten from ship to ship. -
Audio tube
Was created by lead forrest. It was used to amplify signals but its believed that the Candian, Reginald fessenden came up with audio tube. -
call letters
Where establish. W was east of missisipi river and K was west of mississipi river. this started from telegrams. -
closing stations
As ww1 began any radio stations not relevant to the war where closed down. If the government dint need them they they weren't used. -
radio stations
in 1920 kaka radio stationused to be 8xk was broadcasting and still is in pensylvania -
Advertising
WEAF aired a 10 minute commercial for a apartment complex. this cost 50$ and was the beginning of advertising -
waves
radio waves are electromagnetic waves. They allow sound to be delivered, they can range from 30ghz to 3khz -
FRC
FRC organized radio frequencies and power limits. organizing the licenceof transmitter also something they did. -
radios downfall
Radio want as popular any more when tv's came out. They stole some of the popularity with live tv shows. -
Nikola Tesla
He should've been credited for inventing the radio since he made the design in 1892. Although he wasn't given credit he still is the first to make a sign for the radio. -
Radio commercials
Although most radio commercials are only 15 seconds long. The are still considered one of the most effective ways to communicate -
first radio broadcast
The first radio broadcast was on august 31st, 1920. By the station 8mk in Detroit Michigan -
radio stations
people starting getting personal radio station. They would broadcast what they wanted to.
