lecture 4:section 2 Flashcards
who was guglielmo marconi?
he’s considered to be the father of radio, and won the nobel prize for physics in 1909. he proved the feasibility of radio communication after sending and receiving his first radio signal in 1895. nikola tesla and nathan stubblefield took out patens for radio transmitters, but the patent went to tesla instead.
when did radio start becoming a way to communicate verbally instead of thru morse code?
in 1903 when reginald fessden invented the liquid barreter which made it possible to transmit both voice and music. these advancements were made before ww1. during the war, the government stopped any development of commercial aspects of radio.
who was frank conrad?
he was a westinghouse engineer with a small radio station in his garage that he broadcasted to his neighborhood. on sept.30 1920, he received the first license for a commercial radio station (kdka, in pittsburg pa). this station is still operating today.
what was the first commercial broadcast produced by kdka?
nov.2 1920, it broadcasted the election of warren g. harding into office. at that time, only the wealthy had radios, but in two years over a million americans would own a radio.
what is the correlation between the titanic and radio?
when the ship sank, it sent out an s.o.s signal from the radios on board. the message was received by the carpathia, and the ship arrived two hours after the titanic sank. the carla this saved 700 ppl in lifeboats who would’ve perished if not for the s.o.s signal.
what act was passed as a result of the titanic wreckage?
the radio act of 1912 required ships to have both radios and radio operators in operation 24/7. this act set spheres of authority for both state and federal governments, it provided for allocating and revoking licenses and fining violators
what caused the radio act of 1927?
radio stations were fighting over frequencies, caused chaos over the air. after the war, the government made some regulations to stop the chaos. this meant making a monopoly formed by four companies: marconi radio company, general electric, at&t, and rca. after a while this stopped working bc there were ppl making their own broadcasts, so the government said that the airwaves belonged to the public, and u could get licenses to use the frequencies but not own them.
