SCR-602

The SCR-602 (Set Complete Radio model 602) also known as the AN/TPS-3, was a mobile, lightweight, medium-range, early-warning radar utilized by the United States and its allies during World War II. The radar was originally designed for use during the initial stages of an amphibious assault or military operation where its lightweight relative to other radar systems was a distinct advantage. Once larger radars such as the SCR-270 or AN/TPS-1 came online the SCR-602 could also be used to fill in gaps in radar coverage.

Early versions of the SCR-602 were based on the British AMES Type 6, an ad-hoc system developed by adapting the electronics and antennas from the airborne anti-submarine ASV Mk. II radar. This produced a small and robust radar that could be quickly moved and set up. This proved highly useful in the field and led to requests by the US Army Air Corps for a similar system. The 602 was initially built in Canada while improved versions were being developed in the US. By 1944 these newer versions had matured and took over from the earlier systems in both US and Allied use.

Numerous variations of the SCR-602 were manufactured during the war. It was utilized by the United States, United Kingdom and Australia. In the post-war era, these were generally replaced by the AN/TPS-1.