File:NSRW Telegraphy, Wireless - transmitter.jpg
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Size of this preview: 388 × 599 pixels. Other resolutions: 155 × 240 pixels | 311 × 480 pixels | 702 × 1,084 pixels.
Original file (702 × 1,084 pixels, file size: 81 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:06, 21 February 2018 | 702 × 1,084 (81 KB) | Bob Burkhardt | {{Information |description={{en|1=Transmitter for wireless telegraphy.}} |source=“Telegraphy, Wireless,” ''The New Student's Reference Work'', v. 4, p. 1881, fig. 1. |date=published 1914 |author={{unknown}} |permission={{PD-1923}} |other versions= }} {{ExtractedFromNSRW|LA2-NSRW-4-0427.jpg}} Category:Wireless telegraphy |
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