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Mark 25 radar

Description of the radar set, tactical-technical characteristics

Figure 1: Mark 25 radar

Figure 1: Mark 25 radar aboard the battleship USS IOWA (BB 61)

frequency: 8 500 … 9 000 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF): 2 000 Hz
pulsewidth (τ): 0.2 µs
receiving time:
dead time:
peak power: 50 kW
average power:
instrumented range: 24 NM (≙ 45 km)
range resolution: 36 m
beamwidth: 1.3°
hits per scan:
antenna rotation:

Mark 25 radar

Radar Equipment Mark 25 is operating in the X-band automatic tracking fire-control radar equipment for use width Gun Director Mark 37 to control the fire of 5"/38 caliber dual purpose guns. It provides data in train, elevation and range of targets.

The antenna is a paraboloid reflector type with a diameter of 62 inch. It uses linear vertical polarization.