AN/APG-66

The AN/APG-66 is an X-band, fully coherent pulse-Doppler airborne radar manufactured by Northrop Grumman in the United States. Originally designed for the F-16 multirole combat aircraft, it supports various air-to-air and air-to-surface missiles, including the AN/AIM-7F/M Sparrow, AN/AIM-9L/M Sidewinder, AN/AIM-120A, Penguin, MICA, and Skyflash E. The radar features a modular design with six Line-Replaceable Units (LRUs)—Antenna, Transmitter, Low-power RF, Digital signal processor, Radar computer, and Display—each with its own power supply. It has an instrumented range of 80 nautical miles (approximately 150 km) and offers azimuth angular coverage options of ±10°, ±30°, and ±60°. The system demonstrates a Mean Time Between Failure (MTBF) of 121 hours and a Mean Time To Repair (MTTR) of five minutes, with all functions, including self-test, controlled via a serial digital databus. The AN/APG-66 provides 10 operating modes, some incorporating frequency agility for electronic counter-countermeasures, and has spawned several variants.

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