File:Edwin Armstrong wife and portable superhet radio.jpg

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Edwin_Armstrong_wife_and_portable_superhet_radio.jpg ‎(497 × 329 pixels, file size: 24 KB, MIME type: image/jpeg)

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Description
English: American engineer Edwin Armstrong the inventor of the superheterodyne radio receiver, with his new wife Esther Marion MacInnis in Palm Beach, Florida, in 1923. The radio is a portable superheterodyne set that Armstrong built as a gift for her.
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Source http://www.k3dav.com/edwinhowardarmstrong.htm
Author Unknown authorUnknown author
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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Edwin_Armstrong_wife_and_portable_superhet_radio.jpg
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Image extraction processThis file has an extracted image: Esther Marion MacInnis (1923).jpg.
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Date/TimeThumbnailDimensionsUserComment
current23:50, 25 August 2013Thumbnail for version as of 23:50, 25 August 2013497 × 329 (24 KB)Geo Swancropped
23:46, 25 August 2013Thumbnail for version as of 23:46, 25 August 2013497 × 453 (54 KB)Geo Swan{{Information |Description=Said to the 'First_portable_radio', a gift from inventor {{w|Edwin Armstrong}} to his fiancee {{w|Esther Marion MacInnis}}. |Source=http://www.k3dav.com/edwinhowardarmstrong.htm |Date=1923 |Author=unknown |Permission={{PD-Old...
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