OVERVIEW: The AN/TPQ-36 Firefinder Weapon Locating System is a mobile counterbattery radar system.

DETAILS:  The AN/TPQ-36 is designed to detect and track incoming artillery and rocket fire to determine the point of origin for counterbattery fire. The radar is typically trailer mounted and towed by a 4x4 vehicle like Humvee.

NOTES: The AN/TPQ-36 is currently in service at brigade and higher levels in the United States Army, United States Marine Corps, Australian Army, Netherlands Army, South Korea Army, Thailand Army and Norway Army.

SOURCES: Wikipedia. "AN/TPQ-36 Firefinder radar." Accessed December 1, 2013. http://en.wikipedia.org/wiki/AN/TPQ-36_Firefinder_radar
