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Secret Radio Tower Intercepting Trunk Phone Lines

Discover the secret radio tower used by the government to intercept thousands of trunk phone lines in Britain and the Republic of Ireland. Located near the URENCO uranium enrichment plant, this structure played a crucial role in communications surveillance. Explore the fascinating history and technical details of this covert operation.

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Secret Radio Tower Intercepting Trunk Phone Lines

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  1. Woodpecker, Numbers and MoonbounceDenis A Nicole2016-12-01

  2. SIGINT people really hate to ask This is the secret radio tower which the government used to intercept thousands of trunk phone lines running through Britain to the Republic of Ireland. The structure was located on the boundary of the URENCO uranium enrichment plant at Capenhurst in Cheshire http://www.lamont.me.uk/capenhurst/

  3. It is also located right on the microwave line-of-sight between two British Telecom radio towers at Gwaenysgor in North Wales and Pale Heights in Cheshire. The BT towers form part of a chain carrying thousands of phone lines from England, along the north Wales coast to Anglesey, then across the Irish Sea to Dublin. Four microwave channels ran in each direction, each capable of carrying one TV channel or roughly 1,000 phone calls, using frequencies around 6.5 GHz.

  4. They could have just asked BT

  5. Radomes don’t just keep the pigeons out

  6. And where was the AN/FLR-9 looking? To be fair, there are also technical reasons that a Wullenweber is circularly disposed.http://www.ftva.org/heritage/anflr9/RAFChicksands.jpghttp://www.premium-rx.org/ref/wullenweber.pdf

  7. It’s obvious where this was pointing…

  8. …and it didn’t work http://www.dod.mil/pubs/foi/Science_and_Technology/Other/480.pdf

  9. The Orford Ness antenna, and most of the Wullenwebers have gone, but there are still some decent HF antennas out there. • Woodpecker • Woofferton

  10. Woofferton Near Ludlow; still in use

  11. Duga Radar Array Chernobyl https://upload.wikimedia.org/wikipedia/commons/5/5b/Woodpecker.ogg

  12. Duga Dxpedition?

  13. Numbers: the Linconshire poacher https://upload.wikimedia.org/wikipedia/commons/4/4a/Poacher.ogg Transmitting on 10 –14MHz, it was ours, on the Akrotiri base.

  14. Moonbounce 1kW on 144MHz https://www.youtube.com/watch?v=h4iSAVDhH6A

  15. USS Liberty: 8th June 1967 9th June 1967

  16. New challenges • Personal GSM: off-the-shelf phones shifted into our bands • SDR Full open source • D-STAR: eliminate the proprietary CODEC • High speed digital comms • Phased array HF antenna

  17. 4 square

  18. Toys

  19. ChipWhisperer Lite

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