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| View Original: | Radio equipment - Indiana State Museum - DSC00410.JPG (4320x3240) | |||
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| Keywords: Radio equipment - Indiana State Museum - DSC00410.JPG Early radio and television equipment Indiana State Museum 650 West Washington Street Indianapolis Indiana USA Left to right 1915 De Forest Audion vacuum tube was the first device which could amplify electrical signals creating the field of electronics 1923 Crosley Pup radio; this single tube receiver was manufactured in Cincinatti AT T double button broadcasting microphone used in Indianapolis' first successful radio station WFBM established 1924 1927 experimental television receiver prototype built by Morris VanWay for RCA used a spinning disk with holes in front of a neon light to create an image Before modern electronic scan television was developed around WW2 many radio stations broadcast experimental mechanical scan television programs I took this photograph 2011-03-31 16 47 41 Daderot Public domain Indiana State Museum 1915 productions Crosley Radios 1923 productions Broadcasting microphones 1924 productions History of television Television in the 1920s Morris VanWay 1927 works History of electronics | ||||
