Category:AI Mk. IV radar

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<nowiki>Radar AI Mark IV; AI MK RADAR; Radar AI Mk. IV; AI Mark IV radar; Radar AI Mark IV; एआई मार्क चतुर्थ रडार; AI 마크 IV 레이더; AI Mk. IV radar; AI Mark IV; operational model of the world's first air-to-air radar system; Airborne Interception radar, Mark IV</nowiki>
AI Mk. IV radar 
operational model of the world's first air-to-air radar system
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  • airborne interception radar
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AI Mk. IV was the world's first operational airborne fighter radar system. It was used by RAF night fighters from late 1940 until it was replaced by the AI Mk. VIII in 1943.