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Description of the radar set, tactical-technical characteristics

Figure 1: SCR-21

Figure 1: SCR-21

frequency: 2 700 … 2 900 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receive time:
dead time:
peak power: 15 kW (8 modules)
average power:
instrumented range: 70 NM (≙ 130 km)
range resolution: 200 m
accuracy: 100 m; 0.25°
beamwidth: 1.5°
hits per scan:
antenna rotation: 7.5 or 15 rpm
MTBCF: ≥ 30 000 hrs


SCR-21 S-Band primary surveillance radar (PSR) is designed as an unattended Airport Surveillance Radar with high reliability. Its detection range is beyond 130 km for civil and military aircrafts below the height of 12 000 m.

Technical Features:

Picture gallery of SCR-21

Figure 2: Electronic racks

Figure 3: Screenshot of the controllers monitor