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Radio waves broadcasted into space
Heinrich R. Hertz showed that fast variation of electric current could be sent into space. It was then formed to radio waves, equivalent to heat and light. -
1st ship to summon emergency help with the radio
Macroni's wireless link was used to call the lifeboat after ship accident. Soon after the ship R.F. Matthew was in a wreck. That ship was the 1st to request emergency help using the new radio technology. -
First radio signal received and sent
In 1901 Guglielmo Marconi presented and advertised the first efficient transatlantic radio signal. Marconi radios ended confinement of traveling in the ocean. The radio saved many lives in the Titanic. He later shared a Nobel Prize with Karl F. Bryan in Physics. -
Audion tube
The electronic amplifying vacuum tube was invented by Lee de Forest. Consist of glass tube with 3 electrodes inside. Also a heated filament, a plate and grid. Although Reginald Fessenden had the idea, he never made it in the books. -
Titanic impact
If the titanic didn't have radio everyone would have died. When the titanic hit the iceberg & began to sink,the ship began transmitting signals. The airwaves received the message, as operators tracked the rescue team.The sinking of the Titanic brought radio into the public. -
Radio transmission on an airplane
Also known as Activation communication. Wireless radio are an efficient way for airplanes to communicate with personnel. Aviation is an industry that involves multiple languages. It means moving the aircraft in a way that information is conveyed. Wireless radio is the preferred out of many methods. -
Radio Stations
Westinghouse (8vk)is one of the 1st radio stations. It was later renamed as KDKA. On November 2, 1920, KDKA is the first commercial licensed radio station in USA. Frank Concard worked for Westinghouse for half a century. -
Uncle Charlie
Uncle Charlie was another name for personal radio stations. Anybody who owned the equipment for a radio station had a one. But since everyone wanted to make a station it became a problem. -
War effected Uncle charlies radio
When we were in war with Germany many amateur radio stations were banned.Almost all radio stations were under control of Army, US, or Navy. Only a few Universities were giving out waivers to let some people keep broadcasting. -
Call Letters
It was created to prevent uncertainty about related frequencies. Two letters W and K was meant to distinguish east and west stations. W was for east of Mississippi River. K is for the west of it. -
Golden Era of the Great Depression (Music)
The Great Depression was a hard time for people. For people to forget and just relax they listened to music and TV shows on the radio. One of the most popular styles of music during the Great Depression was jazz! -
Radio City Music Hall (Music)
Created to help make the hard times of the Great Depression better. People could see great quality entertainment. It later became a landmark in 1978 -
FM and AM waves
Next music becomes popular on the radio. To make it more easier to find it was played on theFM radio waves. While the talking was placed on the AM radio waves. The person who created FM waves was Major Edwin. He made the waves have a stronger signal & quality. -
Stars leave radio for Tv
All the big stars,actors,and advertisers that made the 1930s and 1940s the golden era of the radio change to TV programs instead. Radio must play records since the actors left. They tried making the shows on the radio but it didn't work. ( Peoples voices sounded different from their original character.This makes the radio stations struggle for views since everyone wanted a TV. -
MP3 (Music)
The radio is is now changed to a more modern device. The MP3 helps people be able to transport their music. it made it more easier for everyone.
