File:Woodpecker array.jpg
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[edit]DescriptionWoodpecker array.jpg |
English: Antenna of the Duga-1 (Дуга-1) over-the-horizon (OTH) radar system, Chernobyl, Ukraine, part of the Soviet ABM early-warning network. It is known in the West by the NATO designation "Steel yard". Its powerful signal, called the "Woodpecker" because it sounded like a tapping noise in radio receivers, was notorious for interfering with radio and television transmissions. The pairs of cylindrical cages at right are the driven elements, fed at their center by vertical feed lines. Behind them is a vertical reflector screen of wires, just visible in center. |
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Date |
before 28 June 2007 date QS:P,+2007-06-28T00:00:00Z/7,P1326,+2007-06-28T00:00:00Z/11 |
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Source | Own work | |||
Author | Necator | |||
Permission (Reusing this file) |
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Original upload log
[edit]The original description page was here. All following user names refer to en.wikipedia.
- 2007-06-28 02:09 Necator~enwiki
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:02, 16 December 2012 | 900 × 720 (308 KB) | Szczureq (talk | contribs) | a little higher resolution | |
10:36, 27 September 2008 | 800 × 640 (264 KB) | Tourbillon (talk | contribs) | {{Information |Description=Duga radar array, Chenobyl, Ukraine |Source=Originally uploaded at [http://en.wikipedia.org/wiki/Image:Woodpecker_array.jpg english wikipedia] |Date=unknown |Author=[http://en.wikipedia.org/w/index.php?title=User:Necator&action= |
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Camera manufacturer | Hewlett-Packard |
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Camera model | HP PhotoSmart C912 (V01.00) |
Exposure time | 339/100,000 sec (0.00339) |
F-number | f/3.9 |
ISO speed rating | 50 |
Date and time of data generation | 12:43, 18 January 2003 |
Lens focal length | 8.2 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Y and C positioning | Centered |
Exif version | 2.1 |
Meaning of each component |
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Image compression mode | 2.4 |
APEX shutter speed | 9 |
APEX aperture | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Subject distance | 65.52999997139 meters |
Metering mode | Pattern |
Light source | Unknown |
Supported Flashpix version | 1 |
Color space | sRGB |
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