File:The Radio Robot LCCN2016889431.jpg

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English: 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 sets, both alternating-current and direct-current and is a portable power pack.
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Library of Congress

This image is available from the United States Library of Congress's Prints and Photographs division
under the digital ID hec.35518.
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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Author Harris & Ewing, photographer

Licensing[edit]

Public domain This work is from the Harris & Ewing collection at the Library of Congress. According to the library, there are no known copyright restrictions on the use of this work.

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Date/TimeThumbnailDimensionsUserComment
current07:21, 19 March 2018Thumbnail for version as of 07:21, 19 March 20185,109 × 3,958 (9.93 MB)Animalparty (talk | contribs){{Information |description={{en|1=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 sets, both alternating-current and direct-current and is a portable power pack.}} |date=1929-08-24 |source=Library of Congress {{LOC image|id=hec.35518}} |author=Harris & Ewing, photographer |permission= |other versions= }} =={{int:license-header}}== {{PD-Harris-Ewing}} Category:1929 in the United States

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