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

[n8de at thepoint.net]

I wonder which of the many strong Ukrainian ham signals is using this  
array in contests.
Don
N8DE

Quoting Donald Chester <k4kyv at hotmail.com>:

>
>
> 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.html
>
>
>
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