sentences:  The APR-28 seeker on the original Kh-58 could only target the MIM-14 Nike-Hercules and English Electric Thunderbird SAM systems, although the "Filin" could recognise other frequencies.The Kh-58M had an updated X band seeker that could recognise the MIM-23 Hawk's AN/MPQ-33 and subsequent AN/MPQ-39 target-illumination radars, and the AN/MPQ-34 low-level target-acquisition radar.Other seekers may have been produced.