[OKDXA] FW: [TowerTalk] Some spectacular views of the abandoned Russian Woodpecker antenna array

[Bert Aaron]

-----Original Message-----
From: Donald Chester [mailto:k4kyv at hotmail.com] 
Sent: Wednesday, December 17, 2008 12:27 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Some spectacular views of the abandoned Russian
Woodpecker antenna array



This gigantic antenna system called Duga-3 is located near Prypiat in the
Chernobyl area.  It was built in the 70's as an early missile detection
system (over-the-horizon radar system). It was also called the Steel Yard
hence its distinctive appearance. The antenna was deactivated in 1989.

The Russian Woodpecker was a notorious Soviet signal that could be heard on
the shortwave radio bands worldwide between July 1976 and December 1989. It
sounded like a sharp, repetitive tapping noise, at 10 Hz, giving rise to the
"Woodpecker" name. The random frequency disrupted legitimate broadcast,
amateur radio, and utility transmissions and resulted in thousands of
complaints by many countries worldwide.

Starting in 1976 a new and powerful radio signal was detected worldwide, and
quickly dubbed the Woodpecker by amateur radio operators. Transmission power
on some woodpecker transmitters was estimated to be as high as 10 MW EIRP.
As well as disrupting shortwave amateur radio and broadcasting it could
sometimes be heard over telephone circuits due to the strength of the
signals. This led to a thriving industry of "Woodpecker filters" and noise
blankers.

http://www.artificialowl.net/2008/12/abandoned-giant-duga-3-system-antenna.h
tml



_____________________________________________________________

This message was typed using the DVORAK keyboard layout.

http://www.mwbrooks.com/dvorak/


http://gigliwood.com/abcd/




_________________________________________________________________
You live life online. So we put Windows on the web. 
http://clk.atdmt.com/MRT/go/127032869/direct/01/
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk