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The Radio Robot. Ralph Stair of the Bureau of Standards has invented the Radio Robot, an electrical and mechanical trouble-shooter for radio receiving data. It is almost a human detective in finding radio troubles, testinng and "pepping up" vacuum tubes, testing radio parts and complete receiving se
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Credit lineThe Radio Robot. Ralph Stair of the Bureau of Standards has invented the Radio Robot, an electrical and mechanical trouble-shooter for radio receiving data. It is almost a human detective in finding r. 1929-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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