File:TX B ondes amorties 1.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file(1,295 × 1,240 pixels, file size: 524 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
Français : Émetteur radiotélégraphique à ondes amorties à excitation directe. utilisé en 1901 par Marconi pour effectue la première liaison transatlantique entre Terre-neuve et la Cornouailles
English: A circuit diagram of a spark gap transmitter, the first type of radio transmitter, used during the first 2 decades of the 20th century.
Date
Source La T. S. F. pour les militaires de toutes armes. Juin 1916. Notice écrite transmissions électriques sans fil de 1901.
Author Scanned and modified by F1jmm
Permission
(Reusing this file)
This work is ineligible for copyright and therefore in the public domain because it consists entirely of information that is common property and contains no original authorship.

Licensing

[edit]
Public domain
This image (or other media file) is in the public domain because its copyright has expired and its author is anonymous.
This applies to the European Union and those countries with a copyright term of 70 years after the work was made available to the public and the author never disclosed their identity.
Important: Always mention where the image comes from, as far as possible, and make sure the author never claimed authorship.

Note: In Germany and possibly other countries, certain anonymous works published before July 1, 1995 are copyrighted until 70 years after the death of the author. See Übergangsrecht. Please use this template only if the author never claimed authorship or their authorship never became public in any other way. If the work is anonymous or pseudonymous (e.g., published only under a corporate or organization's name), use this template for images published more than 70 years ago. For a work made available to the public in the United Kingdom, please use Template:PD-UK-unknown instead.
Flag of Europe
This circuit image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.


It is recommended to name the SVG file “TX B ondes amorties 1.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:50, 7 September 2010Thumbnail for version as of 21:50, 7 September 20101,295 × 1,240 (524 KB)F1jmm (talk | contribs)== Summary == {{original}} {{Information |Description={{fr|Émetteur radiotélégraphique à ondes amorties.}} |Source={{own}} |Date=2010-09-07 |Author=F1jmm |Permission= |other_versions= }} Category:Damped wave transmitters [[Categor

The following 2 pages use this file:

File usage on other wikis

The following other wikis use this file:

Metadata