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AN/SPS-2

Description of the radar set, tactical-technical characteristics

Figure 1: AN/SPS-2

Figure 1: AN/SPS-2

Specifications
frequency: 1 250 … 1 350 MHz
(L-band)
pulse repetition time (PRT): 4 166 µs
pulse repetition frequency (PRF): 240 Hz
pulsewidth (τ): 6 µs
receiving time:
dead time:
peak power: 7 MW
average power: 10 kW
instrumented range: 330 NM (≙ 620 km)
range resolution: 900 m
accuracy: 366 m
beamwidth: β= 1.3° ;ε= 2.5°
hits per scan:
antenna rotation:
MTBCF:
MTTR:

AN/SPS-2

AN/SPS-2 was a long-range 3D L-band search radar using a stacked beam antenna with seven beams in vertical plane. Unfortunately it was too big for anything but large cruisers. Due to its huge size and weight it was only installed on two ships, USS Northampton (CLC-1) and USS Little Rock (CLG-4). The antenna alone weighed 55 000 pounds (23.6 metric tons), the whole radar system weighed 100 000 pounds (about 44 metric tons).

Picture gallery of AN/SPS-2

Figure 2: AN/SPS-2 used a typical diamond-shaped antenna reflector.