AN/SPG-55

AN/SPG-55
	USS Mahan (DDG-42) with Mark 10 Terrier/Standard missile launcher
Country of origin	United States
Type	Missile fire-control
Frequency	C-band (Tracking); X-band (Illuminator);
PRF	427 Hz
Range	300,000 yd (150 nmi)
Precision	Fire control quality three-dimensional data

The AN/SPG-55 was an American tracking / illumination radar for Terrier and RIM-67 Standard missiles (SM-1ER/SM-2ER). It was used for target tracking and surface-to-air missile guidance as part of the Mk 76 missile fire control system. It was controlled by a UNIVAC 1218 computer.

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