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Marconi
Marconi invented radio in 1895-today. He was an italian entrepreneur, business man and the founder of the Wireless Telegraph and signal company in 1897. -
Lee De Forest
Lee De Forest was an american inventor who created audio tube which is a vacuum tube that amplified signals. This was also known as a three element "Grid Audio" . He had a limited understanding of how it worked or was supposed to be used but, he provided the foundation of the vacuum tube technology. -
Vacuum tubes
Between 1900 and 1910 was spent improving the wireless telegraph. In 1906 the vacuum tube he called the Audion was created. Between 1910 and 1920 Lee De Forest improved his Audion as a detector, an amplifier, and later a transmitter of radio. This was the foundation of radio and without this invention radio would'nt be created this early -
Frank Conrad
Frank Conrad was an electrical engineer and was well known by his work as a pioneer broadcaster at Westinghouse Electrical and Manufacturing company. The company still lives today in Pittsburg Pennsylvania. He invented 8XK and then renamed it KDKA in 1920 and these stations allowed us to listen to the radio. -
radio stations
8XK was invented and then was later renamed by Frank Conrad to KDKA. This allowed us to listen to talk shows and music. This was helpful because it let people escape from the reality of daily life. -
First Commercial
in 1922 WEAF aired a 10 minute commercial for an apartment complex charging $50 -
Uncle Charlie
Uncle Charlie (personal radio stations) was too popular and they needed a solution to get it under control. At this time everybody was broadcasting on the radio and it was too much to handle. -
call letters
"W" East of Mississippi "K" West of Mississippi. In North America, they are used for all FCC licensed transmitters. Because there was only one telegraph line linking all railroad stations, there needed to be a way to address each one. -
TV invention
Television was invented September 7th, 1927. Since radio played shows and wasn't much of a factor anymore since TV had been invented, radio decided to play music only and drop the shows. -
FRC
FRC was established in 1927 and required people to have a license to have a station. This was much needed because of all the people who were broadcasting on the radio. -
AM radio
Different categories were invented which where only AM and FM. AM waves meant amplitude modulation and was, more for talk shows and had 535 KHz-1605 KHz. AM radio was a major help during all the big events and the wars that were occurring during this time period. Many people relied on AM radio to get information and accurate facts about there community. -
FM radio
FM waves meant frequency modulation and was more for music purposes and it had 88-108 MHz. This was the most popular one and was mostly helpful. FM Radio was a major factor in everyday life and helped people relax. -
golden era
The Golden Era was the time period in which radio got destroyed by the TV invention and almost no one was listening to the radio to listen to shows, it could all be watched and heard on Television. Radio then decided to just play music instead of shows so that you could strictly just watch shows on TV and listen to music on the radio. -
Radio vs. Pandora
Pandora was offendly more popularly used then radio mostly because of the fact that on Pandora you had more freedom and if you wanted to listen to a certain artist you could, by just typing it in. On radio you had no control over what was played and you were stuck with whatever the broadcaster wanted to play on the station, you could only determine what genre of music you wanted to listen to. -
sea travel
During sea travel, it wasn't common for people to be able to listen to the radio, because of the signals. Signals were only on land and if you were not on land then you wouldn't be able to listen to the radio.
