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This is in Pep's neck of the woods, although he might not understand this new-fangled WW2 technology



It's a massive HF direction finding array. There are only two still working: this one at Elmendorf AFB, the other in Japan.

http://en.wikipedia.org/wiki/Wullenweber

There was a similar array at Skaggs Island, CA, from 1942-1993.

There was one in Rota Spain as well.