File:KDKA-KDPM-WBZ Shortwave relay diagram (1923).jpg
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![File:KDKA-KDPM-WBZ Shortwave relay diagram (1923).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/3/31/KDKA-KDPM-WBZ_Shortwave_relay_diagram_%281923%29.jpg/694px-KDKA-KDPM-WBZ_Shortwave_relay_diagram_%281923%29.jpg)
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Original file (700 × 605 pixels, file size: 168 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:23, 1 October 2020 | ![]() | 700 × 605 (168 KB) | commons>Thomas H. White | Better quality scan |
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