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The AN/ALQ-99 system on EA-6B Prowler Aircraft. EA-6B in foreground carries 3 under-wing jamming pods for transmitting and a single fixed pod on its tail for receiving.

The AN/ALQ-99 is an airborne electronic warfare system, found on EA-6B and EA-18G military aircraft.


System Description

The ALQ-99 is an airborne integrated jamming system designed and manufactured by EDO Corporation. Receiver equipment and antennas are mounted in a fin-tip pod while jamming transmitters and exciter equipment are located in under-wing pods. The system is capable of intercepting, automatically processing and jamming received radio frequency signals.[1] The system receivers can also be used to detect, identify and direction find those signals, providing Signals intelligence (SIGINT) either automatically or manually.[2]


EF-111A Raven in the foreground carrying a fixed tail pod for receiving and a fixed transmitting pod on underside. Note that while the EA-6B carries removable transmitter pods, the EF-111 has the transmitter built into the underside of the aircraft.

The AN/ALQ-99 is currently mounted on EA-6B Prowler and EA-18G Growler aircraft of the U.S. Navy and, in the case of the EA-6B Prowler only, U.S. Marine Corps.

It has been previously mounted on EF-111A Raven aircraft of the U.S. Air Force. These aircraft were fully retired from service by May 1998.


  • AN/ALQ-99E – the version mounted on EF-111A aircraft. It has a 70% commonality with the U.S. Navy's AN/ALQ-99 systems.

The EF-111A Ravens were initially stationed at Mountain Home AFB, Idaho using modified AGS Yellow Squadron's F-111A Aardvarks.


The AN/ALQ-99 has a maximum power output of 10.8 kW in its older versions and of 6.8 kW in its newer versions.[3] It uses a ram air turbine to supply its own power.


Tail fin housing assembly for the AN/ALQ-99 equipment, seen during an EF-111A conversion.

The AN/ALQ-99 has been used during the 1986 American attacks in Libya, 1991 Gulf War, Operation Northern Watch (1992-2003), Operation Southern Watch (1997-2003), 1999 Balkans War and 2003 Second Gulf War. In all of these conflicts its performance has been regarded as very good and in some cases crucial.


  1. ^ EDO Corporation EA-6B Page.
  2. ^ The Warfighter's encyclopedia. EA-6B Prowler.
  3. ^ Cooling Requirements for the Advanced Ram Air Driven Power and Cooling Unit (ARADPCU) on the EA-18G.

See also


Related ECMs

External links


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