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AN/APR-48A Radar Frequency Interferometer (RFI)

The AN/APR-48A Radar Frequency Interferometer (RFI) is designed to provide 360-degree coverage for identification and direction (by azimuth) of threat radar for theCH-58D, OH-58D KIOWA WARRIOR and AH-64H LONGBOW APACHE aircraft. The threat radar includes both ground and airborne systems, which control fires (gun and missile), and those that provide early warning or targeting information.