File:Armstrong prototype FM transmitter 1935.jpg
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Armstrong_prototype_FM_transmitter_1935.jpg (270 × 198 pixels, file size: 19 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:52, 28 October 2015 | ![]() | 270 × 198 (19 KB) | Chetvorno | User created page with UploadWizard |
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