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File:Woodpecker array.jpg

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Summary

Description
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.
Date before 28 June 2007
date QS:P,+2007-06-28T00:00:00Z/7,P1326,+2007-06-28T00:00:00Z/11
Source Own work
Author Necator
Permission
(Reusing this file)
Public domain This work has been released into the public domain by its author, Necator~enwiki at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Necator~enwiki grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Original upload log

The original description page was here. All following user names refer to en.wikipedia.

Captions

Duga over the horizon radar

Items portrayed in this file

depicts

Duga radar

exposure time

0.00339 second

focal length

8.2 millimetre

File history

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Date/TimeThumbnailDimensionsUserComment
current16:02, 16 December 2012Thumbnail for version as of 16:02, 16 December 2012900 × 720 (308 KB)Szczureqa little higher resolution
10:36, 27 September 2008Thumbnail for version as of 10:36, 27 September 2008800 × 640 (264 KB)Tourbillon{{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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