Army picks L3Harris Randtron for radar warning receiver antennas for airborne electronic warfare (EW)

June 20, 2024
The AN/APR-39D(V)2 is the latest upgrade, and corrects deficiencies and enhances capability in the same weight and dimensions as the previous system.

ABERDEEN PROVING GROUND, Md. – U.S. Army RF surveillance experts needed spare antennas for the AN/APR-39 radar warning receiver. They found their solution from L3Harris Randtron Antenna Systems in Menlo Park, Calif.

Officials of the U.S. Defense Logistics Agency Land and Maritime division at Aberdeen Proving Ground, Md., on behalf of the Army, have announced a $33.6 million contract to Randtron Antenna for AN/APR-39 radar warning receiver antenna spares.

The Northrop Grumman Mission Systems segment in Rolling Meadows, Ill., builds the AN/APR-39 family of radar warning receivers, which detect radar threats to aircraft, such as radar ground sites and particularly radar-guided missiles, and provides 360-degree coverage around the aircraft. When the system detects radar threats, it alerts the aircraft crew to each threat with a graphic symbol on the cockpit display.

The AN/APR-39D(V)2 RF and microwave system is the latest upgrade to the AN/APR-39 radar warning receiver that corrects deficiencies and enhances capability in the same weight and dimensions as the previous system. The upgrade calls for a new digital receiver for the AN/APR-39D(V)2.

Related: Northrop Grumman to provide processors and detectors for radar warning receivers aboard aircraft and ships

The APR-39 provides the pilot and air crew with information on threat types, bearing, and the severity of the threat. The system also gives the aircrew synthetic speech audio threat warnings.

The APR-39 electronic warfare (EW) system also functions as an electronic warfare management system, and serves as the heart of Northrop Grumman's suite of integrated sensors and countermeasures that integrates and displays data from onboard sensors radio frequency and electro-optical sensors.

On this contract Randtron Antenna will do the work in Menlo Park, Calif., and should be finished by March 2027. For more information contact L3Harris Randtron Antenna online at, Northrop Grumman Mission Systems online at, or the Defense Logistics Agency Land and Maritime division at

About the Author

John Keller | Editor-in-Chief

John Keller is the Editor-in-Chief, Military & Aerospace Electronics Magazine--provides extensive coverage and analysis of enabling electronics and optoelectronic technologies in military, space and commercial aviation applications. John has been a member of the Military & Aerospace Electronics staff since 1989 and chief editor since 1995.

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