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Mk. 13

Description of the radar set, tactical-technical characteristics

Figure 1: Mk. 13 antenna on the Gun Director Mk. 34

Figure 1: Mk. 13 antenna on the
Gun Director Mk. 34

Specifications
frequency: 8 815 ± 75 MHz
(X-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 1 800 Hz
pulsewidth (τ): 2.4 µs
receive time:
dead time:
peak power: 50 kW
average power: 27 W
instrumented range: 25 NM (≙ 46 km)
range resolution: 360 m
accuracy: 5 m; 2 mils
beamwidth: 0.9°
hits per scan:
antenna rotation:
MTBCF:
MTTR:

Mk. 13

Mk. 13 is operating in the X-Band radar used in conjunction with Gun Directors Mk. 34, 38 and Mk. 54 for control of 6-, 8-, 12- and 16-inch guns.

The antenna of Radar Equipment Mk 13 is mounted atop the gun director. A parabolic antenna with dimensions of 8 × 2 feet (≙ 2.44 × 0.61 m) moves within the radome with a fan beam pattern having a vertical beamwidth of 3.6°. During operation it scans five times a second, thus completing ten scans per second.

Source:

Picture gallery of Mk. 13

Figure 2: Antenna with opened radome