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AN/FPS-71

Description of the radar set, tactical-technical characteristics

Figure 1: AN/FPS-71

Figure 1: AN/FPS-71

Specifications
frequency: 1 220 … 1 350 MHz
(L-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 325 … 400 Hz
pulsewidth (τ): 2 µs
receive time:
dead time:
peak power: 5 MW
average power:
instrumented range: 200 NM (≙ 370 km)
range resolution:
accuracy: 3%
beamwidth: 1.4°
hits per scan:
antenna rotation: 6 min⁻¹
MTBCF:
MTTR:

AN/FPS-71

AN/FPS-71 was operating in L-Band air surveillance and acquisition radar used as Alternate Battery Acquisition Radar (ABAR) at some Nike missile sites. ABAR means: This radar was used instead of the originally planned HIPAR for cost reasons.

The double-curved parabolic reflector has a wide of 40 feet. Its vertical beam width was 6.2 degrees.