Saturday, December 25, 2010

The AN/APG-69 was an X-band pulse-doppler radar developed by Emerson Electric and used in the F-5E fighter aircraft. This radar was a box-for-box replacement for the AN/APQ-153, requiring no structural wiring or cooling changes. The AN/APG-69 featured ten air-to-air and air-to-ground modes. The air-to-air modes included velocity search for long-range wide-angle searches, track-while-scan, single target track and dogfight modes that locked onto the closest target. The AN/APG-69 could guide the AIM-7 Sparrow missile, making it the first of Emerson's offerings to reach production with beyond visual range capability. The air-to-ground modes included Doppler-Beam Sharpening mapping, moving target search and track, and sea-surface-search modes. The AN/APG-69 had a look-up detection range of 30nm against a 5 square meter target.