File:NSRW Telegraphy, Wireless - receiver.png
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:41, 22 February 2018 | 703 × 891 (92 KB) | Bob Burkhardt | {{Information |description ={{en|1=Receiver circuit diagram for wireless telegraphy: (''T'') coherer; (''A'') vertical wire; (''E'') ground; (''R'') relay; (''M'') sounder or recorder; (''t'') tapper.}} |source =“Telegraphy, Wireless,” ''The New Student's Reference Work'', v. 4, p. 1882, fig. III. |author ={{unknown}} |date =published 1914 |permission ={{PD-1923}} }} Category:Wireless telegraphy Category:Radio circuits |
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