Many FCRs of other Chinese SAM can be used for HQ-9, such as FCR used in KS-1 SAM, SJ-212, itself an enlarged and improved version of the SJ-202 fire control radar (FCR) used in HQ-2J.[1][10] H-200 & SJ-231 FCRs of latter models of KS-1 SAM are also compatible with HQ-9.