The AN/APG-67 is a multi mode, X-band, pulse-doppler radar, which was originally developed by General Electric for the F-20 Tigershark program of the early 1980s, but today is manufactured by Lockheed Martin. The APG-67 is an active electronically, all-digital radar which features a planar phased array antenna and simplified electronics housed in three line-replaceable units, one of these being the radar "dish" itself. The entire system weighs less than 160 lb and takes up less than 1.9 cubic feet. The system broadcasts an average power of 396 watts. Offering a variety of air-to-air, air-to-ground, sea-search and mapping modes, the AN/APG-67 is compatible with most weapons used by the US Air Force in the 1980s.
In tracking mode, the AN/APG-67 can detect fighter-sized targets at up to 40 nm (75 km). In the air-to-air mode it features long-range velocity search, track-while-scan with up to ten tracked targets, and a variety of single-target-track and auto-lockon "dogfight" modes. The air-to-ground modes include real beam ground mapping, synthetic aperture radar imaging (SAR) and beacon tracking. All communications with the cockpit is handled using the MIL-STD-1553 data bus; the data bus allows the data from any of the aircraft's sensors to be shown on any of the in-cockpit displays, or sent to other aircraft using a data link.
The AN/APG-67 is fully operational 90 seconds after turn-on. Its coherent pulse-doppler processing is particularly adept at detecting targets in the "look-down" engagement which gives the pilot look-down/shoot-down capability for targets hiding in the ground clutter and sea clutter. Additionally, pilot distraction due to false alarm is minimized.