From InterceptRadio.com Wiki
OTHB Radar Antenna - W7KI expedition - August 2005 Most ham operators and shortwave listeners are familiar with the "Russian Woodpecker" which was an OTHB radar system that plagued the HF bands up until the 1980's. There was also an American OTHB system with stations on the west coast and east coast of the continental U.S.
More information is available here: http://www.globalsecurity.org/wmd/systems/an-fps-118.htm Here are some satellite photos... Christmas Valley (Oregon) transmitter
Tule Lake (California) receiver
The satellite photos don't do this place justice so it was time for a road trip. Here are some photos of the Tule Lake site (north end of northernmost antenna):
Antenna (full view)
Antenna (close-up of tower sections)
Antenna (end view)
Antenna (end view close-up)
Antenna (wire mesh)
Antenna (ground mesh)
Antenna (top close-up)
Antenna (ground mesh close-up)
Antenna (back side)
Antenna (front side)
Unfortunately I wasn't able to plug my radio into it.