The Caribou (QYD) Joint Surveillance System (JSS) ARSR-4 radar is used for USAF air defense and Federal Aviation Administration (FAA) air traffic control.
Also:
http://en.wikipedia.org/wiki/ARSR
Caribou JSS Radar
By skyeye @ 2010-01-13 13:50:29
skyeye
@ 2010-01-13 19:21:42
http://www.radomes.org/museum/showsite.php?site=Caribou,+ME