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Radio
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first known instance of wireless aerial communication.
Significance: This opened up the world to wireless technology. prior to this communication was done on the ground with wired technology like phones. -
Period: to
wireless telegraphy
During the first three decades the term "wireless telegraphy" was used instead of radio. -
David E. Hughes used a spark gap to generate radio signals
Significance: this spark gap system was the first method of wireless signals -
The Russian physicist Alexander Popov built a coherer.
Significance: this device allowed for signal detection and was used in the first radio recievers. -
Invention of the radio
Transmission and radiation of radio frequency energy was a feature exhibited in the experiments by Nikola Tesla' a serbian inventor and engineer. this invention allowed world wide public comunication -
Julio Cervera Baviera worked with Marconi resolved the difficulties of wireless telegraph
Significance: This made radio easier to make and use and led to the creation of the first radio tellegraph service in history. -
first successful transatlantic radiotelegraph message
Significance: now the world could comunicate across oceans almost instantly. -
The company Telefunken was founded
Significance: this company erected radio towers in West Sayville, New York and Nauen, creating the only wireless communication between North America and Europe. -
The U.S. Patent Office reversed its decision, awarding Marconi a patent for the invention of radio
Significance: we had to give the credit to someone and withought Marconi the radio wouldnt have gotten as far as it did -
AM radio was invented
Significance: this allowed for more than one radio statioin to send signals at a time as opposed to the spark-gap radio system. -
success
In 1907, Marconi established the first commercial transatlantic radio communications service, between Clifden, Ireland and Glace Bay, Newfoundland. -
Lee De Forest invents the triode
Significance: this device amplified signals allowing for space telegraphy -
speech was first transmitted across the continent from New York City to San Francisco and across the Atlantic Ocean from Naval radio station NAA at Arlington, Virginia, to the Eiffel Tower in Paris.
Significance: This showed one of the more practical and very convient uses for radio and showed its potential -
colorado's first radioi broadcast station
Significance: This year radio service was avalilble to poeple in colorado for those who could afford the new technology. -
FM radio was introduced to europe
Significance: This granted Europe superior sound quality and the ability to run many more local stations cause of the wider range of frequencies. -
transistor radios were introduced
Significance: This allowed radios to be made smaller and to only require a small battery to function. Now people could take their radios with them like we do with our ipods. -
VOR systems become popular for aircraft navigation
Significance: This allowed for the VOR stations to dertimine a magnetic berring from the station to the aircraft. -
First telstar was launched
Significance: This communication satelite succesfully transmitted the first television pictures, telephone calls, fax images and provided the first live transatlantic television feed. this opened the door to radio communication across much greater disitances. -
the first Master FM Antenna system in the world was designed
Significance: this allowed individual FM stations to broadcast simultaneously from one source -
The GPS constellation of satellites was launched.
Significance: this revolutionized navigation even helping the navy navigate threw the oceans -
The U.S. Army and DARPA launched an aggressive successful project to construct a software radio that could become a different radio on the fly by changing software.
Significance: The army
