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Radio developed from wireless telegraphy towards the end of the 19th century. Spark transmitters made a crackling noise in the receiver, speech and music was not possible. When thermionic tubes became available in the early 20th century it was now possible to modulated the transmitter current via the output of a carbon granule microphone. In about 1910 radio operators were stunned to hear the voice of an arctic explorer stating that he had 'found the pole' coming through their headphones where previously there had only been Morse Code tones.
What else can I help you with?
First radio station was located where?
The first radio station was called the KDKA. It was broadcasted in Pittsburgh in 1920.
When was the first hp computer built?
The first hp computer built in 1937.
When was the first temple of the Jews built?
the first jewish temple was built in the times of king solomon
Which group built the first greek kingdom?
I think it was the Mycenaeans who built the first Greek kingdoms
When was the roman vindolanda buit?
The first fort at vidolanda was built about 85ADThe first Roman fort at Vindolanda was built about 85ADThe first Roman fort at Vindolanda was built about 85AD
Where was the first particle accelerator built?
The first and the most common one is a simple radio
What date the first radio telescope is built and detects radio waves coming from object in space?
october 2 1608
When was the first radio telescope used?
The first radio antenna used to identify an astronomical radio source was one built by Karl Guthe Jansky, an engineer with Bell Telephone Laboratories, in 1931.
When was the radio used first used?
The first radio antenna used to identify an astronomical radio source was one built by Karl Guthe Jansky, an engineer with Bell Telephone Laboratories, in 1931.
When was Australia's first radio station built?
NTN building, Lyndurst, Victoria. First transmission 1928.
Does this treadmill have a built in Am/Fm radio?
Not this treadmill doesn't include a built in AM/FM radio.
Was television or radio invented first?
Television uses hardware, components, processes, natural laws, and audiences that were built during 30 years of radio.
When was the radio telescope first made?
The first radio antenna used to identify an astronomical radio source was one built by Karl Jansky, an engineer with Bell Telephone Laboratories, in 1931. Jansky was assigned the job of identifying sources of static that might interfere with radio telephone service.
What year was the first radio ever made?
The first act of wireless telegraphy took place August 14, 1894. The first radio receiver was official built in 1895.
What year was the first Radio Flyer tricycle made?
The Radio Flyer company, known for its classic wagons; branched out & made it's first tricycles in the 1930's. The model 33 tricycle was first built in 1933.
Who built the radio?
Guglielmo Marconi
When did Grote Weber invent the radio telescope?
Grote Reber, not Grote Weber, is credited with building the first radio telescope in 1937. He used a parabolic antenna to observe radio waves from outer space, laying the foundation for modern radio astronomy.
