When the company began producing television sets in 1949, it pioneered 'Unit-ized' television construction, a design based on small units or modules that greatly simplified both manufacturing and servicing and became an standard industry in the 1970s. Setchell-Carlson built radios and audio amplifiers, as well as the world's first radio intercom and was an important source of radio and electronics equipment for the Armed Forces during World War II. company, in Saint Paul, USA, with his Karadio colleague Mr. ![]() In 1930, he formed the Setchell-Carlson, Inc. He founded the Karadio Corporation to produce and market the first commercial automobile radios. ![]() ![]() Bart Setchell put radio on the road in 1928! He invented the radio vibrator, which made bulky 'B' and 'C' batteries types unnecessary.
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