File:1913 Marconi operator room for 5 kilowatt ocean liner station.JPG
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1913_Marconi_operator_room_for_5_kilowatt_ocean_liner_station.JPG (677 × 495 pixels, file size: 57 KB, MIME type: image/jpeg)
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Фотография "Операторской на лайнере, показывающая приемное устройство для станции мощностью 5 кВт. ", которая появилась между страницами 252 и 253 в издании 1913 года "Ежегодник беспроволочной телеграфии и телефонии". (Кажется, Олимпик)
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[edit]Description1913 Marconi operator room for 5 kilowatt ocean liner station.JPG |
English: Photograph of "The Operator's Room on a liner, showing the Receiving Apparatus for a 5-kw. Station", which appeared between pages 252 and 253 in the 1913 edition of "The Year Book of Wireless Telegraphy and Telephony". (Appears to be the Olympic) Français : Photographie de la salle de l'opérateur sur le paquebot Olympic, montrant l'appareil de réception et d’émission d'une station de 5 kW en télégraphie sans fil", qui est apparue entre les pages 252 et 253 dans l'édition de 1913 de "l'Annuaire de la télégraphie et de la téléphonie sans fil". Station radiotélégraphique avec le détecteur magnétique fixé au mur en dessous de la fenêtre-parloir. Monsieur Brent radiotélégraphiste Marconi. (Avec un dès premier amplificateur audio (BF) à lampe électronique pour le casque). Les navires émettaient sur la longueur d'onde de 300 mètres (1000 kHz) et écoutaient sur la longueur d'onde 600 mètres 500 kHz. Les stations côtières normalement émettaient sur la longueur d'onde 600 mètres (500 kHz) et écoutaient sur la longueur d'onde de 300 mètres (1000 kHz). Les navires et les stations côtières avaient les possibilités d’émettre et de recevoir sur la même longueur d’onde; exemples un navire contactant un autre navire sur la longueur d'onde 600 mètres. |
Date | |
Source | Photograph which appeared between pages 252 and 253 in the 1913 edition of "The Year Book of Wireless Telegraphy and Telephony". |
Author | Work for hire |
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[edit]Public domainPublic domainfalsefalse |
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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.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:1913_Marconi_operator_room_for_5_kilowatt_ocean_liner_station.JPG |
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[edit]English: Magnetic detector
Français : Détecteur magnétique
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:52, 30 September 2020 | 677 × 495 (57 KB) | Hohum (talk | contribs) | Upload colourised images separately | |
21:25, 22 June 2020 | 677 × 495 (81 KB) | F1jmm (talk | contribs) | Colorisation | ||
23:53, 29 June 2015 | 677 × 495 (57 KB) | Thomas H. White (talk | contribs) | User created page with UploadWizard |
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1913
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26253bac03df45ec314942f5921b5681ae24264a
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