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SCR-520 Airborne Radar


Photograph of SCR-520 radar components

ibiblio.org

Specifications:

Wavelength 10 cm
Pulse width
1.3 microseconds
Pulse repetition frequency     
2000 Hz
Scan rate
360 rpm
Power
3.3 kW
Range Bombers at 10,000 feet (3000  m): 6 miles (9 km)
Fighters at 17,000 feet (5200 m): 3 miles (5 km)
Minimum 375 feet (114m)
Antenna
30" (76 cm) parabolic
Scope
Operator:
5" (12.7cm) B scope
5" (12.7cm) C scope
Pilot:
5" (12.7cm) C scope
Accuracy
3 degrees
Weight
477 lbs
216 kg
Production     
108 sets

The SCR-520 was an air intercept radar for night fighters. It was used in the P-61 Black Widow but was superceded by SCR-720. The scope could be set for maximum ranges of 1, 10, or 100 miles (1.6, 16, or 160 km), which was rather optimistic on the high end. It could search a full 180° forward of the aircraft, and its altitude search settings were -10° to 45°, 20°, 35°, 50°, or 65°.

A number of sets were converted to SCR-517 surface search radar.

References

Wildenberg (accessed 2011-5-10)


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