The AN/SPG-49 was a naval fire-control radar developed between 1947 and 1948 by the American firm Sperry Corporation for the US Navy. The AN/SPG-49 was a target illumination and tracking radar which was used along the AN/SPW-2 in the guidance system of the RIM-8 surface-to-air missile. It was designed in 1947 and its development was parallel to that of the RIM-8. The fire control of the AN/SPG-49 had a frecuency range from 5.4 to 5.9 GHz. Since this system was cumbersome and heavy, the AN/SPG-49 was replaced by the AN/SPQ-5 radar from 1979.