USAF-AFSOC MH-53J (Super Jolly Green Giant) LORAL AN/ALQ-157IRCM - The Ultimate Distraction / Special Operations Forces / Local-made South East Asia / Circa 1990 / Rare Patch.
AN/ALQ-157 is designed to provide protection against IR guided missiles and is being manufactured for use on large troop-carrying helicopters and transport aircraft. For large helicopter applications, two transmitters are installed (one on each side of the sail) for unobstructed protection in azimuth. Transport aircraft applications utilise transmitters mounted on either side of the fuselage. As such, AN/ALQ-157(V) comprises multiple transmitter units, a control power supply, an electromagnetic interference filter assembly and a pilot's control indicator. Functionally, a switch on the control power supply allows in-flight selection of any one of five preprogrammed jamming codes and there is a facility to enable the preprogramming of additional codes as new threats are defined. All the system's operational sequences are microprocessor controlled and the architecture as a whole is configured to ensure 'full-time' protection against threats, easy access to all components and automatic operational readiness testing (using dedicated built-in test circuitry). As of 2005, BAE Systems was promoting an AN/ALQ-157(M) configuration which was described as being a modular equipment, as being effective against 'multiple [and] simultaneous' Bands I, II and III IR threats, as incorporating microprocessor control, as offering jamming code selectability and as being reprogrammable. Most recently, there has been no evidence of AN/ALQ-157(M) production. During the same year, the contractor was also upgrading existing United States Navy (USN) and US Marine Corps (USMC) AN/ALQ-157(V) equipments to AN/ALQ-157A(V)1 configuration.
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