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Type 903

Description of the radar set, tactical-technical characteristics

Figure 1: MRS3 fire control director with the Type 903 tracking radar mounted.

Figure 1: MRS3 fire control director with the Type 903 tracking radar mounted.

Specifications
frequency: 8 500 … 9 600 MHz
(X-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 3000 Hz
pulsewidth (τ): 0.1 µs
receive time:
dead time:
peak power: 50 kW
average power:
instrumented range: 15 NM (≙ 28 km)
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation:
MTBCF:
MTTR:

Type 903

Type 903 was operating in X-Band naval fire control radar using a conical scan.

The antenna was a symmetrical parabolic reflector with a diameter of 4 feet (120 cm) fed by a Cutler-feed. The antenna was mounted to the gunnery director and moving with it.