ALR - 67 Radar Warning Receiver The AN / ALR - 67 Radar Warning Receiver is designed to warn an aircraft ' s crew of potentially hostile radar activity . It is an airborne threat warning and countermeasures control system built to be successor to the United States Navy ' s AN / ALR - 45 . Northrop Grumman Corporation ' s Electronic Systems sector ( Rolling Meadows , Illinois ) was the main contractor for the AN / ALR - 67 ( V ) and ( V ) 2 . Raytheon Electronic Warfare Systems ( Goleta , California ) was the main contractor for the AN / ALR - 67 ( V ) 3 . Northrop Grumman AN / ALR - 67 ( V ) and AN / ALR - 67 ( V ) 2 . The AN / ALR - 67 countermeasures warning and control system is the standard threat warning system for tactical aircraft and was specifically designed for the A - 6E / SWIP , AV - 8B , F - 14B , F - 14D and F / A - 18 . The system detects , identifies and displays radars and radar - guided weapon systems in the C to J frequency range ( about 0 . 5 to 20 GHz ) . The system also coordinates its operation with onboard fire - control radars , datalinks , jammer s , missile detection systems and anti - radiation missiles . The AN / ALR - 67 ( V ) 2 comprises the following units : The AN / ALR - 67 ( V ) 2 in turn has been given a significant enhancement in capability , through Engineering Change Procedure ECP - 510 to the AN / ALR - 67E ( V ) 2 standard . The AN / ALR - 67E ( V ) 2 provides additional enhancements including a 10 - fold improvement in detection ranges when in the presence of a wingman ' s radar signals ; it also incorporates Inertial guidance system ( INS ) stabilisation for accurate display in high " g " manoeuvres and during high roll maneuvers . The designation ALR - 67B ( V ) 2 is in connection with the ALR - 67 systems fitted to Spain ' s EF - 18 and Canadian ' s CF - 18 aircraft . Over 1 , 600 AN / ALR - 67 ( V ) and AN / ALR - 67 ( V ) 2 systems have been sold . The AN / ALR - 67 ( V ) has been supplied to the U . S . Navy and U . S . Marine Corps and the air forces of Australia , Canada , Finland , Kuwait , Malaysia , Spain and Switzerland . Raytheon AN / ALR - 67 ( V ) 3 . The AN / ALR - 67 ( V ) 3 is commonly referred to as the Advanced Special Receiver ( ASR ) set . The receiver electronics unit has been upgraded to a fully channelized digital architecture with dual 32 - bit processors , yet with an overall reduction in system size and weight . The Azimuth Display Indicator ( ADI ) is a 3 in ( 76 . 2 mm ) diameter CRT or LCD cockpit display , carried over from the AN / ALR - 67 ( V ) 2 , used to show intercepted threats . The AN / ALR - 67 ( V ) 3 also forms part of the electronic countermeasures programme , including an interface to the ALE - 50 Towed Decoy System . In August 1999 , Raytheon was awarded an initial contract for full - rate production of the AN / ALR - 67 ( V ) 3 for the U . S . Navy F / A - 18E / F Super Hornet , totalling 34 complete installations , together with 40 spare quadrant receivers and five countermeasures receivers . These were delivered during 2001 / 02 . Further production contracts followed , with the latest in April 2005 , where Raytheon received its seventh production contract for 42 systems totalling US $ 44 million . This contract brought total orders to 284 receivers plus spares . It was reported on 13 September 2006 that the Australian Defence minister has accepted a recommendation to stop development of the ALR - 2002 for the F / A - 18 , the RAAF will most likely install the ALR - 67V ( 3 ) instead . On 3 August 2007 , Deagel . com reported that the Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Canada of AN / ALR - 67 ( V ) 3 radar warning receivers as well as associated equipment and services . The total value , if all options are exercised , could be as high as $ 209 million . This notice of a potential sale is required by law ; it does not mean that the sale has been concluded . Other variants . A variant of this system , designated AN / ALR - 67 ( V ) 4 , was included in a proposed upgrade for the F - 14A but was never implemented due to the retirement of those aircraft in the United States .