AN/TPQ-39

The AN/TPQ-39 Digital Instrumentation Radar (DIR) is an early warning radar developed in 1972 as a universal range instrument. Operating in the C-band (IEEE designation) or G-band (NATO designation) at frequencies between 5400 and 5900 MHz, it was the first instrumentation radar to incorporate a digital computer for subsystem functions. This portable system, designed for flexibility, low cost, and moderate accuracy, utilizes a general-purpose digital computer to minimize hardware while maximizing reliability and flexibility. Key features include a 640 Hz pulse repetition frequency, a 1.5 µs pulsewidth, 259 kW peak power, an instrumented range of 233 km (126 NM), raster scan, automatic target acquisition, and automatic and manual bandwidth and coast control. It also uses G-band transponders to enhance tracking performance, and its transmitter employs a magnetron. Five AN/TPQ-39 radar sets were manufactured between 1972 and 1977.

radartutorial.eu: https://www.radartutorial.eu/19.kartei/01.oth/karte041.en.html