diff --git a/scripts/interfer.gd b/scripts/interfer.gd
index 01c7f527..b43601c5 100644
--- a/scripts/interfer.gd
+++ b/scripts/interfer.gd
@@ -260,7 +260,8 @@ func on_th_aoa_update(threats: Dictionary, ecms: Dictionary, unit_instance) -> v
         if not gos_flag:                    # Составляется список запретных секторов работы
             if (thr.proto in gos_protocols) and thr.fflags.proto:
                 var fs_arr: Array = []
-                prd.find_fs_index(thr.aoa, thr.freq, fs_arr)
+                var th_aoa = fposmod(thr.aoa - course, 360)
+                prd.find_fs_index(th_aoa, thr.freq, fs_arr)
                 if fs_arr.size():
                     for item in fs_arr:
                         var nmfs = prd.FS_PRD[item][1]
@@ -270,9 +271,7 @@ func on_th_aoa_update(threats: Dictionary, ecms: Dictionary, unit_instance) -> v
             if thrs[ecm_i] == th_id:
                 var ecm = ecms[ecm_i]
                 ecm.params['freq'] = thr.freq
-                ecm.kni = thr.aoa - course
-                if ecm.kni < 0:
-                    ecm.kni += 360
+                ecm.kni = fposmod(thr.aoa - course, 360)
                 call_ecm_proc(ecm)
                 if ecm.nmfs in gos_nmfs:
                     interfer_off(ecm, unit_instance)
@@ -299,7 +298,8 @@ func on_th_aoa_update(threats: Dictionary, ecms: Dictionary, unit_instance) -> v
     if auto_enabled:
         for thr in threats.values():
             var fs_arr: Array = []
-            prd.find_fs_index(thr.aoa, thr.freq, fs_arr)
+            var th_aoa = fposmod(thr.aoa - course, 360)
+            prd.find_fs_index(th_aoa, thr.freq, fs_arr)
             if fs_arr.size():
                 var need_continue = false
                 for item in fs_arr: