The SCR-720 (AI Mark X in British service) was an air intercept radar for night fighters derived from the larger SCR-520.
It was used in the P-61 Black Widow and was equipped for IFF (Identification Friend or Foe).
The scope could be set for maximum ranges of 1, 10, 20 or 100 miles (1.6, 16, 32, 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 0° to 0°, -5° to +5°, +5° to +20° and +20° to +50°.
The multiple scopes and range select features gave the SCR-720 partial immunity to chaff.
It was used in the P-61 Black Widow and was equipped for IFF (Identification Friend or Foe).
The scope could be set for maximum ranges of 1, 10, 20 or 100 miles (1.6, 16, 32, 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 0° to 0°, -5° to +5°, +5° to +20° and +20° to +50°.
The multiple scopes and range select features gave the SCR-720 partial immunity to chaff.
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