diff --git a/dependencies/control_system_client_shps b/dependencies/control_system_client_shps
index 9241716..6fb944f 160000
--- a/dependencies/control_system_client_shps
+++ b/dependencies/control_system_client_shps
@@ -1 +1 @@
-Subproject commit 92417169312526456fdad4668c9d3bb04e64de70
+Subproject commit 6fb944f93015c30ba4fef1e88f793f0d6a02c1aa
diff --git a/front-generator/render-params.json b/front-generator/render-params.json
index 9518c38..f72f7b8 100644
--- a/front-generator/render-params.json
+++ b/front-generator/render-params.json
@@ -408,7 +408,7 @@
                     "values": [{"label": "0.02", "value": "20"}, {"label": "0.05", "value": "50"}, {"label": "0.10", "value": "100"}, {"label": "0.15", "value": "150"}, {"label": "0.20", "value": "200"}, {"label": "0.25", "value": "250"}, {"label": "0.30", "value": "300"}, {"label": "0.35", "value": "350"}]
                   },
                   {"widget": "number", "label": "Коэф. расширения", "name": "rxSpreadCoef", "max": 1024, "min": 8, "step": 2},
-                  {"widget": "number", "label": "Порог коррелятора", "name": "rxFftShift", "max": 10, "min": 0, "step": 0.1},
+                  {"widget": "number", "label": "Порог коррелятора", "name": "rxFftShift", "max": 10, "min": 1, "step": 0.125},
                   {"widget": "number", "label": "Кол-во пакетов на преамбулу", "name": "rxFieldsDataPreamble", "max": 255, "min": 1, "step": 1}
                 ]
               }
diff --git a/src/api-driver/structs.cpp b/src/api-driver/structs.cpp
index c2bedd6..87ef0d9 100644
--- a/src/api-driver/structs.cpp
+++ b/src/api-driver/structs.cpp
@@ -683,6 +683,7 @@ void api_driver::obj::TerminalRxTxSettings::updateMainSettings(const nlohmann::j
 #ifdef MODEM_IS_SHPS
     dem.koef_spread = data.value("rxSpreadCoef", dem.koef_spread);
     dem.rxFftShift = data.value("rxFftShift", dem.rxFftShift);
+    dem.rxFieldsDataPreamble = data.value("rxFieldsDataPreamble", dem.rxFieldsDataPreamble);
 #endif
 
 #ifdef API_STRUCT_ACM_ENABLE
@@ -876,6 +877,7 @@ nlohmann::json api_driver::obj::TerminalRxTxSettings::asJson() const {
 #ifdef MODEM_IS_SHPS
         rxtx["rxSpreadCoef"] = dem.koef_spread;
         rxtx["rxFftShift"] = dem.rxFftShift;
+        rxtx["rxFieldsDataPreamble"] = dem.rxFieldsDataPreamble;
 #endif
 
 #ifdef API_STRUCT_ACM_ENABLE
diff --git a/static/main-shps.html b/static/main-shps.html
index e1ab009..871cacd 100644
--- a/static/main-shps.html
+++ b/static/main-shps.html
@@ -199,7 +199,7 @@
                         </select>
                     </label>
                     <label><span>Коэф. расширения</span><input type="number" v-model="paramRxtx.rxSpreadCoef" min="8" max="1024" step="2"/></label>
-                    <label><span>Порог коррелятора</span><input type="number" v-model="paramRxtx.rxFftShift" min="256" max="4096" step="1"/></label>
+                    <label><span>Порог коррелятора</span><input type="number" v-model="paramRxtx.rxFftShift" min="1" max="10" step="0.125"/></label>
                     <label><span>Кол-во пакетов на преамбулу</span><input type="number" v-model="paramRxtx.rxFieldsDataPreamble" min="1" max="255" step="1"/></label>
                 </div>
             </div>
@@ -378,7 +378,7 @@
                     rxBaudrate: 0,
                     rxRolloff: 20,
                     rxSpreadCoef: 8,
-                    rxFftShift: 256,
+                    rxFftShift: 1,
                     rxFieldsDataPreamble: 1,
                 },
                 paramBuclnb: {