The Departments of Defense and Homeland Security jointly manage the radar in Fossil in north-central Oregon, which they use for long-distance surveillance. It also assists with civilian air traffic control.

The federal government upgraded the system’s software in 2010 to allow construction of the 845MW Shepherds Flat project in Oregon, among the country’s largest wind farms.

Wyden, an Oregon Democrat, wants it replaced with technology that can overcome interference caused by turbines, known as “clutter.”

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