Editing Radar warning receiver (section)

== Types in service ==
* [[ALR-2002]] (Australia; developmental, project being cancelled)
* [[ALR-400]] (Spain; EF-18A/B Hornet, Airbus A400M, C-295, CH-47 Chinook, Cougar, TIGER, NH90, CH-53)
* [[AN/APR-39]] (USA; [[Bell AH-1 Cobra|AH-1]], [[AH-64]] Apache, [[CH-46]] Sea Knight, [[CH-47 Chinook]], [[CH-53]], [[UH-60|EH-60]] Black Hawk, [[KC-130]] Hercules, [[CH-47 Chinook|MH-47 Chinook]], [[UH-60|MH-60]] Black Hawk, [[OH-58]], [[OV-1]] Mohawk, [[RC-12]], [[RV-1 Mohawk|RV-1]], [[UH-1]] Iroquois, [[UH-60]] Black Hawk, [[V-22 Osprey]])
* [[AN/ALR-46]] (USA; [[F-4 Phantom II]], [[F-4 Phanton II|RF-4 Phantom II]], [[F-5 Freedom Fighter|F-5]], B-52G)
* [[AN/ALR-56]] (USA; [[F-15 Eagle]], [[General Dynamics F-16 Fighting Falcon|F-16]] block 50 and 52, Canada; [[CC-130]] Hercules)
* [[AN/ALR-66]] (USA; [[P-3 Orion|P-3C]] Orion)
* [[ALR-67 Radar Warning Receiver|AN/ALR-67]] (USA; [[AV-8B]] Harrier II, [[F-14]] Tomcat, [[F/A-18]] Hornet, [[F/A-18E/F]] Super Hornet, [[EA-6]]B Prowler, Canada; [[CF-18]] Hornet)
* [[AN/ALR-69]] (USA; [[B-52H]] Stratofortress, lacks Frequency Selective Receiver (FSRS) capabilities however, [[A-10 Thunderbolt II]], [[AC-130]] Spectre, [[F-16]] Fighting Falcon, [[HH-53]], [[MC-130]], [[F-4 Phantom II|F-4E Phantom II]]).
* [[AN/ALR-76]] (USA; [[S-3 Viking|S-3]], [[Lockheed EP-3|EP-3]])
* [[AN/ALR-94]] (USA; [[F-22 Raptor|F-22]])
* [[ARI 18223]] (British aircraft such the Jaguar Mk.1)
* [[BOW-21]] (Sweden; [[JAS 39 Gripen]] Germany; [[Panavia Tornado]])
* [[L-150]] Pastel (Soviet-Russian aircraft)
* Sirena series (Soviet aircraft)
* [[SkyGuardian 2000]] (British EH-101 and WAH-64 Apache; Portuguese EH-101)
* [[SPO-15 Beryoza]] (India; [[MiG-29]] Fulcrum, Russia; [[Su-27SK]] Flanker-B, China; [[Shenyang J-11|J-11]])
* [[SPS-1000V5]] (Portugal; [[F-16]] Fighting Falcon, C-295M)
* [[Tarang (RWR)|Tarang]] (India; [[MiG-27]] Flogger, [[HAL Tejas|LCA]] Tejas, Jaguar, [[Su-30MKI]] Flanker)
* [[Thales Spectra]] (France; [[Dassault Rafale]])
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== Example of an RWR display ==
This is what an RWR display might look like and is particularly representative of the AN/ALR-69. It shows a ground-based search [[radar]] nearly straight ahead, an [[SA-6 Gainful|SA-6]] SAM system about 30 degrees to the right of straight ahead (currently the closest and most dangerous threat as indicated by the diamond and hat) and an [[F-15 Eagle|F-15]] fighter behind and slightly to the left. The distance of the threats from the center is not necessarily indicative of the threat's absolute range, but rather the proximity to the lethal envelope of the threat. For example, if an [[S-75 Dvina|SA-2]] and a [[ZSU-23-4 Shilka|ZSU-23-4]] are both dead ahead of the aircraft and at the same range, the SA-2 actually appears nearer to the center of the display because the SA-2 has a much greater lethal envelope than the ZSU-23-4.  The concentric rings on the display signify different 'lethality zones'. The outer ring signifies that the threat is beyond engagement range (i.e., the range it can engage you, not vice versa), the middle ring signifies that the threat is within engagement range, the inner ring equates to a 'no-escape' zone. This ordering of the rings applies to the AN/ALR-69 found in, for example, the F-16.  However, some sources claim the order is reversed on the AN/ALR-67, with the 'critical' zone being the outer ring. In many ways this would make more sense, because it allows greater spacial separation of the highest priority threats on the display, allowing the pilot a greater degree of angular resolution when determining the direction of the threat.
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