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Summary
| Description |
English: Coherer radiotelegraphy receiver designed by the French inventor Auguste Jean-Baptiste Tauleigne (1870-1926) around 1914. This was used to receive radiotelegraphy text messages in from a spark-gap transmitter. The coherer which detected the radio signals from the wire antenna, a horizontal glass tube with metal powder between two electrodes, is visible at right. The radio signal caused the metal powder to become conductive, allowing current from a battery (not visible) to flow through it to register on the siphon recorder. The siphon recorder (left) recorded the Morse code as an ink line on a paper tape, which could be translated later into text by an operator. Alternately the code could be listened to using the headphones (right). A bell (right) was provided to alert the operator when a message was coming in.
Français : Receveur de télégraphes conçu par le physicien français Auguste Jean-Baptiste Tauleigne (1870-1926) A droite, le relai avec lequel on tape le message. Au centre, les écouteurs. A gauche, la partie enregistreuse de l'appareil : les points et traits du message en Morse sont imprimés sur une bande de papier. Photographie publiée dans "La Télégraphie Sans Fil", 1914, par le géophysicien français Alphonse Berget (1860-1934). |
| Date | |
| Source | Photograph published in 'La Telegraphie Sans Fil' (Wireless Telegraphy, 1914), by the French geophysicist Alphonse Berget (1860-1934) |
| Author | Alphonse Berget |
| Other versions | File:Recepteur telegraphique tube limaille.jpg colorized version |
Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:41, 16 May 2023 | | 801 × 381 (164 KB) | R8cocin8 | removed ywllow border, adjusted exposure |
| 15:34, 27 January 2015 |  | 801 × 381 (96 KB) | Basicdesign | User created page with UploadWizard |
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