File:Radio Frequency Amplifier 1939 Radio Frequency Amplifier Attribution.jpg

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Radio_Frequency_Amplifier_1939_Radio_Frequency_Amplifier_Attribution.jpg ‎(368 × 599 pixels, file size: 60 KB, MIME type: image/jpeg)

A basic radio transmitter that was used for radio intelligence in The Soviet Union (circa 1939) - 2007 Photo by Wikimedia User: George Shuklin.

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current21:09, 18 September 2012Thumbnail for version as of 21:09, 18 September 2012368 × 599 (60 KB)Beichner (talk | contribs)

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