HT-233 is the FCR used by HQ-9 that is closest to AN/MPQ-53: In comparison to earlier H-200 radar used by early models of KS-1 SAM which uses a simple horn instead of lens arrangement, HT-233 radar adopts lens arrangement of AN/MPQ-53. In comparison to SJ-231 radar used by the latest model of KS-1, HT-233 has a thousand more phase shifter on its antenna array, totaling four thousand, as opposed to the three thousand of SJ-231. In contrast, both AN/MPQ-53 & 30N6E radars have ten thousand phase shifters on their antenna arrays respectively.