The AN/TPS-77 from Lockheed Martin is a RADAR System with Azimuth Range 360 Degree, Elevation Range -6 to 20 Degree (Search), -6 to 60 Degree (Elevation), Frequency 1215 to 1400 MHz, Power 3.6 to 19.9 KW, Range 10 to 470 km. More details for AN/TPS-77 can be seen below.