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is a vacuum tube containing an electron gun (a source of electrons or electron emitter) and a fluorescent screen used to view images. It has a means to accelerate and deflect the electron beam onto the fluorescent screen to create the images. The image may represent electrical waveforms (oscilloscope), pictures (television, computer monitor), radar targets and others.
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Reginald Aubrey Fessenden - who was recognized as the "father" of radio and as the first to actually transmit the sound of the human voice without wires.
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The Radio Act of 1912 assigns three- and four-letter codes to radio stations and limits broadcasting to the 360m wavelength, which jams signals.
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KDKA is currently owned and operated by CBS Radio and its studios are located at the combined CBS Radio Pittsburgh facility on Foster Drive in Green Tree.
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U.S. Radio Act of 1927 is signed forming the Federal Radio Commission.
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Philo Farnsworth was an American inventor and television pioneer. Although he made many contributions that were crucial to the early development of all-electronic television, he is perhaps best known for inventing the first fully functional all-electronic image pickup device (video camera tube), the "image dissector", the first fully functional and complete all-electronic television system, and for being the first person to demonstrate such a system to the public.
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As part off the Communications Act of 1934, the Federal Communications Commission is formed to govern U.S. broadcasting .
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More than 1,000 U.S. digital TV stations are on the air and television enjoys it's first major technological change in decades. Consumers start buying HDTV sets in significant numbers.
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