File:Reflective array, bow tie, grid, or panel UHF television antenna,.jpg
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DescriptionReflective array, bow tie, grid, or panel UHF television antenna,.jpg |
Français : antenne type panneau bande UHF à 2 éléments pour TNT.Ici montée pour la polarisation Verticale. Existe aussi en version avec préamplificateur d'antenne UHF incorporé et à 4 éléments soit + 3 dB .
English: A "bow tie" UHF television antenna, mounted in attic. Also called a "grid", "panel", or "reflective array" antenna, it is widely-used for distant reception on UHF channels. This example consists of two dipole elements, each consisting of two V-shaped wires, mounted in front of a screen reflecter. The "bow-tie" dipole has a wider bandwidth than an ordinary half wave dipole, improving coverage of the wide UHF television band. |
Date | 3.11.2007 |
Source | Own work |
Author | Casimodo |
Permission (Reusing this file) |
GFDL |
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 08:21, 10 January 2008 | ![]() | 2,272 × 1,704 (1.13 MB) | Casimodo (talk | contribs) | {{Information |Description= antenne panneau UHF pour TNT |Source=travail personnel |Date= 3.11.2007 |Author= Casimodo |Permission= GFDL |other_versions= }} |
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Camera manufacturer | NIKON |
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Camera model | E4300 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/2.8 |
ISO speed rating | 105 |
Date and time of data generation | 19:31, 8 November 2007 |
Lens focal length | 8 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E4300v1.5 |
File change date and time | 19:31, 8 November 2007 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 19:31, 8 November 2007 |
Meaning of each component |
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Image compression mode | 3 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 38 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |