towers

  • Abandoned Duga-3 ‘Woodpecker’ Radio Antenna Looks Menacing

    Gizmodo Australia

    Back in the 70s, amateur radio enthusiasts around the world began hearing a sharp, repetitive tapping noise at the 10Hz frequency, which disrupted communications and could occasionally be heard over telephone circuits. It was dubbed the “woodpecker” signal, and this was the cause of it: a Russian over-the-horizon anti-ballistic missile system called Duga-3, which could…