File:UHF TV Antenna 001.JPG
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this preview: 800 × 320 pixels. Other resolutions: 320 × 128 pixels | 1,000 × 400 pixels.
Original file (1,000 × 400 pixels, file size: 164 KB, MIME type: image/jpeg)
File information
Structured data
Captions
Summary[edit]
DescriptionUHF TV Antenna 001.JPG |
English: Yagi antenna for UHF HDTV reception. The antenna's main lobe is off the right end of the antenna; it is most sensitive to stations in that direction. Each of the metal crossbars along the antenna support boom is called an element, which acts as a half-wave dipole resonator for the radio waves. The antenna has one driven element which is attached to the TV; it is behind the black box (left). The black box is a preamplifier which increases the power of the TV signal before it is sent to the TV set. The 17 elements to the right of the driven element are called directors; they reinforce the signal. The 4 elements on the V shaped boom (left) are called a "corner reflector"; they serve to reflect the signal back toward the driven element. Yagi HDTV antennas use a corner reflector to increase the bandwidth of the antenna. The rest of the antenna increases the gain at higher channels, while the corner reflector increases the gain at lower channels. |
Date | |
Source | Own work |
Author | Tennen-Gas |
Permission (Reusing this file) |
GFDL |
Licensing[edit]
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 |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
| ||
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 |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 06:43, 6 November 2008 | 1,000 × 400 (164 KB) | 天然ガス (talk | contribs) | {{Information |Description={{en|1=Yagi UHF TV antenna}} |Source=Own work |Author=Tennen-Gas |Date=18 October 2008 |Permission=GFDL |other_versions= }} <!--{{ImageUpload|full}}--> Category:Television Antenna |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on ary.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on cs.wikipedia.org
- Usage on de.wikipedia.org
- Usage on el.wikipedia.org
- Usage on en.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on id.wikipedia.org
- Usage on is.wikipedia.org
- Usage on it.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on la.wikipedia.org
- Usage on lt.wikipedia.org
- Usage on mk.wikipedia.org
- Usage on nl.wiktionary.org
- Usage on pl.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on si.wikipedia.org
- Usage on te.wikibooks.org
- Usage on te.wiktionary.org
- Usage on th.wikipedia.org
- Usage on tr.wikipedia.org
- Usage on vi.wikipedia.org
- Usage on zh.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
---|---|
Camera model | Canon EOS 5D |
Exposure time | 1/80 sec (0.0125) |
F-number | f/4 |
ISO speed rating | 320 |
Date and time of data generation | 16:48, 18 October 2008 |
Lens focal length | 200 mm |
Orientation | Normal |
Horizontal resolution | 100 dpi |
Vertical resolution | 100 dpi |
Software used | Adobe Photoshop CS Windows |
File change date and time | 15:36, 6 November 2008 |
Y and C positioning | Centered |
Exposure Program | Manual |
Exif version | 2.21 |
Date and time of digitizing | 16:48, 18 October 2008 |
APEX shutter speed | 6.375 |
APEX aperture | 4 |
APEX exposure bias | 0 |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Focal plane X resolution | 3,086.925795053 |
Focal plane Y resolution | 3,091.2951167728 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Scene capture type | Standard |