The “Duga” systems were extremely powerful, reaching over 10 MW, and broadcast in the shortwave radio bands. They were nicknamed Russian Woodpecker. The first impression woodpeckers give us is the way they hit trees at high frequencies. The speed of a woodpecker’s peck is as high as 555cm/s, and it taps trees 500-600 times a day, like tapping a… Continue reading It can interfere with global communication signals. How good was the Duga radar?