AN/SPG-53

The AN/SPG-53 was a ship-based fire control radar developed in the 1960s by Western Electric for the US Navy and manufactured by AT&T. It was designed for controlling the Mark 42 5"/54 caliber gun on the Belknap class cruisers, Mitscher class destroyers, and the Knox class frigates. The AN/SPG-53 operates in the frequency range between 8.5 and 10 GHz with a constant performance of 35 kW and is used in combination with the Mark 68 gun fire-control system. The AN/SPG-53F variant can track targets, sending this data to the Gun Computer System which calculates the firing solution for the Mk 42 Mod 10 Gunmounts.