File:Válvula de vacío.jpg
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Museo del Comercio de Salamanca Exposición: Los sonidos del ayer Objeto: Válvula de vacío Texto explicativo: Procedente de El Radio Faro de San Pedro de Rozados. Montado por los alemanes en 1937 para el Ejercito del Aire Wiki Loves Art 2010 Fotografía: Juan Miguel Ávila | Darco TT Cámara: Canon EOS 7D Objetivo: Canon 50mm 1.4 1/125 - f/3.2 - ISO 400
English: The P453 directly-heated transmitter pentode was made by SRF (Société Française Radio-Électrique; Paris). It was a clone of Telefunken RS384 introduced in 1939. The same RS384 was copied in the Soviet Union as GU80 (first made public in 1954), and probably elsewhere too. |
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| Author | Juan Miguel Darco TT from Salamanca, España | |||||||||||||||||||||||
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This image, originally posted to Flickr, was reviewed on February 4, 2011 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 19:05, 4 February 2011 | | 683 × 1,024 (240 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{Information |Description=Museo del Comercio de Salamanca Exposición: Los sonidos del ayer Objeto: Válvula de vacío Texto explicativo: ''Procedente de El Radio Faro de San Pedro de Rozados. Montado por los alemanes en 1937 para el Ejercito del Aire'' |
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