diff --git a/radio/src/datastructs.h b/radio/src/datastructs.h
index 89930a61f..ad47d159b 100644
--- a/radio/src/datastructs.h
+++ b/radio/src/datastructs.h
@@ -692,7 +692,7 @@ PACK(struct ModuleData {
   uint8_t invertedSerial:1; // telemetry serial inverted from standard
   int16_t failsafeChannels[NUM_CHNOUT];
   int8_t  ppmDelay:6;
-  uint8_t ppmPulsePol:1;
+  uint8_t ppmPulsePol:1;       // For PXX: false = internal antenna, true = exetrnal antenna
   uint8_t ppmOutputType:1;     // false = open drain, true = push pull
   int8_t  ppmFrameLength;
 });
diff --git a/radio/src/gui/horus/menu_model_setup.cpp b/radio/src/gui/horus/menu_model_setup.cpp
index a79a0e1bb..69fc1de80 100644
--- a/radio/src/gui/horus/menu_model_setup.cpp
+++ b/radio/src/gui/horus/menu_model_setup.cpp
@@ -65,6 +65,7 @@ enum menuModelSetupItems {
   ITEM_MODEL_INTERNAL_MODULE_CHANNELS,
   ITEM_MODEL_INTERNAL_MODULE_BIND,
   ITEM_MODEL_INTERNAL_MODULE_FAILSAFE,
+  ITEM_MODEL_INTERNAL_MODULE_ANTENNA,
   ITEM_MODEL_EXTERNAL_MODULE_LABEL,
   ITEM_MODEL_EXTERNAL_MODULE_MODE,
   ITEM_MODEL_EXTERNAL_MODULE_CHANNELS,
@@ -187,6 +188,7 @@ bool menuModelSetup(evt_t event)
          INTERNAL_MODULE_CHANNELS_ROWS,
          IF_INTERNAL_MODULE_ON(IS_MODULE_XJT(INTERNAL_MODULE) ? (HAS_RF_PROTOCOL_MODELINDEX(g_model.moduleData[INTERNAL_MODULE].rfProtocol) ? (uint8_t)2 : (uint8_t)1) : (IS_MODULE_PPM(INTERNAL_MODULE) ? (uint8_t)1 : HIDDEN_ROW)),
          IF_INTERNAL_MODULE_ON((IS_MODULE_XJT(INTERNAL_MODULE)) ? FAILSAFE_ROWS(INTERNAL_MODULE) : HIDDEN_ROW),
+         IF_INTERNAL_MODULE_ON(0),
          LABEL(ExternalModule),
          (IS_MODULE_XJT(EXTERNAL_MODULE) || IS_MODULE_DSM2(EXTERNAL_MODULE)) ? (uint8_t)1 : (uint8_t)0,
          EXTERNAL_MODULE_CHANNELS_ROWS,
@@ -527,6 +529,11 @@ bool menuModelSetup(evt_t event)
           }
         }
         break;
+        
+      case ITEM_MODEL_INTERNAL_MODULE_ANTENNA:
+        lcdDrawText(MENUS_MARGIN_LEFT, y, STR_ANTENNASELECTION);
+        g_model.moduleData[INTERNAL_MODULE].ppmPulsePol = selectMenuItem(MODEL_SETUP_2ND_COLUMN, y, STR_VANTENNATYPES, g_model.moduleData[INTERNAL_MODULE].ppmPulsePol, 0, 1, attr, event);
+        break;
 
       case ITEM_MODEL_TRAINER_MODE:
         lcdDrawText(MENUS_MARGIN_LEFT, y, STR_MODE);
diff --git a/radio/src/pulses/pxx_arm.cpp b/radio/src/pulses/pxx_arm.cpp
index f0e49f0f5..071121568 100644
--- a/radio/src/pulses/pxx_arm.cpp
+++ b/radio/src/pulses/pxx_arm.cpp
@@ -23,6 +23,7 @@
 #define PXX_SEND_BIND                      0x01
 #define PXX_SEND_FAILSAFE                  (1 << 4)
 #define PXX_SEND_RANGECHECK                (1 << 5)
+#define PXX_INTERNAL_ANTENNA               0
 
 const uint16_t CRCTable[]=
 {
@@ -300,8 +301,18 @@ void setupPulsesPXX(unsigned int port)
     }
   }
 
-  /* CRC16 */
+  /* Ext. flag (holds antenna selection on Horus internal module, 0x00 otherwise) */
+#if defined(PCBHORUS)
+  uint8_t antenna = PXX_INTERNAL_ANTENNA;
+  if (port == INTERNAL_MODULE) {
+    antenna = g_model.moduleData[INTERNAL_MODULE].ppmPulsePol;
+  }
+  putPcmByte (antenna, port);
+#else
   putPcmByte(0, port);
+#endif
+
+  /* CRC16 */
   pulseValue = modulePulsesData[port].pxx.pcmCrc;
   putPcmByte(pulseValue >> 8, port);
   putPcmByte(pulseValue, port);
diff --git a/radio/src/translations.cpp b/radio/src/translations.cpp
index 5a78c6151..cb3acac37 100644
--- a/radio/src/translations.cpp
+++ b/radio/src/translations.cpp
@@ -113,6 +113,7 @@ const pm_char STR_OPEN9X[] PROGMEM =
     ISTR(VFORMULAS)
     ISTR(VPREC)
     ISTR(VCELLINDEX)
+    ISTR(VANTENNATYPES)
 #endif
 #if defined(MAVLINK)
     ISTR(MAVLINK_BAUDS)
@@ -541,6 +542,7 @@ const pm_char STR_BLCOLOR[]  PROGMEM = TR_BLCOLOR;
   const pm_char STR_TRAINER[] PROGMEM = TR_TRAINER;
   const pm_char STR_MODULE_BIND[] PROGMEM  = TR_MODULE_BIND;
   const pm_char STR_CHANNELRANGE[] PROGMEM = TR_CHANNELRANGE;
+  const pm_char STR_ANTENNASELECTION[] PROGMEM = TR_ANTENNASELECTION;
   const pm_char STR_SET[] PROGMEM = TR_SET;
   const pm_char STR_PREFLIGHT[] PROGMEM = TR_PREFLIGHT;
   const pm_char STR_CHECKLIST[] PROGMEM = TR_CHECKLIST;
diff --git a/radio/src/translations.h b/radio/src/translations.h
index d679589c7..c100d9e9e 100644
--- a/radio/src/translations.h
+++ b/radio/src/translations.h
@@ -195,7 +195,8 @@ extern const pm_char STR_OPEN9X[];
   #define OFS_VFORMULAS         (OFS_VSENSORTYPES + sizeof(TR_VSENSORTYPES))
   #define OFS_VPREC             (OFS_VFORMULAS + sizeof(TR_VFORMULAS))
   #define OFS_VCELLINDEX        (OFS_VPREC + sizeof(TR_VPREC))
-  #define OFS_MAVLINK_BAUDS     (OFS_VCELLINDEX + sizeof(TR_VCELLINDEX))
+  #define OFS_VANTENNATYPES     (OFS_VCELLINDEX + sizeof(TR_VCELLINDEX))
+  #define OFS_MAVLINK_BAUDS     (OFS_VANTENNATYPES + sizeof(TR_VANTENNATYPES))
 #else
   #define OFS_MAVLINK_BAUDS	(OFS_VTRAINERMODES)
 #endif
@@ -309,6 +310,7 @@ extern const pm_char STR_OPEN9X[];
   #define STR_VFORMULAS         (STR_OPEN9X + OFS_VFORMULAS)
   #define STR_VPREC             (STR_OPEN9X + OFS_VPREC)
   #define STR_VCELLINDEX        (STR_OPEN9X + OFS_VCELLINDEX)
+  #define STR_VANTENNATYPES     (STR_OPEN9X + OFS_VANTENNATYPES)
 #endif
 
 #if defined(MAVLINK)
@@ -786,6 +788,7 @@ extern const pm_char STR_BLCOLOR[];
   extern const pm_char STR_TRAINER[];
   extern const pm_char STR_MODULE_BIND[];
   extern const pm_char STR_CHANNELRANGE[];
+  extern const pm_char STR_ANTENNASELECTION[];
   extern const pm_char STR_SET[];
   extern const pm_char STR_PREFLIGHT[];
   extern const pm_char STR_CHECKLIST[];
diff --git a/radio/src/translations/cz.h.txt b/radio/src/translations/cz.h.txt
index b1fe15e82..18b1cb4d3 100644
--- a/radio/src/translations/cz.h.txt
+++ b/radio/src/translations/cz.h.txt
@@ -549,6 +549,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Nízký\0 ""1\0     ""2\0     ""3\0     ""4\0     ""5\0     ""6\0     ""Nejvíce""Delta\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "\007"
@@ -939,6 +942,7 @@
 #define TR_UNIT                "Jednotky"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Přidat senzor ručně"
 #define TR_CHANNELRANGE        INDENT "Rozsah kanálů"
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Nízký Alarm"
 #define TR_CRITICALALARM       INDENT "Kritický Alarm"
 #define TR_ENABLE_POPUP        "Povolit vyskakovací okno"
diff --git a/radio/src/translations/de.h.txt b/radio/src/translations/de.h.txt
index 321fc1b39..e2e27ad46 100644
--- a/radio/src/translations/de.h.txt
+++ b/radio/src/translations/de.h.txt
@@ -553,6 +553,9 @@
 #define LEN_VCELLINDEX         "\012"  // "\007" ursprünglich
 #define TR_VCELLINDEX          "Niedrigst\0""1. Zelle\0 ""2. Zelle\0 ""3. Zelle\0 ""4. Zelle\0 ""5. Zelle\0 ""6. Zelle\0 ""Höchster\0 ""Differenz\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "\007"
@@ -943,6 +946,7 @@
 #define TR_UNIT                "Einheit"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Sensor hinzufügen ..."
 #define TR_CHANNELRANGE        TR(INDENT "Kanäle", INDENT "Ausgangs Kanäle")  //wg 9XR-Pro
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Vor-Alarm bei"
 #define TR_CRITICALALARM       INDENT "Kritisch-Alarm"
 #define TR_ENABLE_POPUP        "Freigabe Popup-Fenster"
diff --git a/radio/src/translations/en.h.txt b/radio/src/translations/en.h.txt
index d8c4015fc..789cb236b 100644
--- a/radio/src/translations/en.h.txt
+++ b/radio/src/translations/en.h.txt
@@ -569,6 +569,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Lowest\0""1\0     ""2\0     ""3\0     ""4\0     ""5\0     ""6\0     ""Highest""Delta\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "   "
@@ -965,6 +968,7 @@
 #define TR_UNIT                "Unit"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Add a new sensor..."
 #define TR_CHANNELRANGE        TR(INDENT "Ch. Range", INDENT "Channel Range")
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Low Alarm"
 #define TR_CRITICALALARM       INDENT "Critical Alarm"
 #define TR_ENABLE_POPUP        "Enable Popup"
diff --git a/radio/src/translations/es.h.txt b/radio/src/translations/es.h.txt
index c6deea85c..dc26ea8c3 100644
--- a/radio/src/translations/es.h.txt
+++ b/radio/src/translations/es.h.txt
@@ -483,6 +483,7 @@
 
 #define TR_ON_ONE_SWITCHES     "ON\0""One"
 
+
 #if defined(PCBTARANIS)
   // only special switches here
   #define TR_VSWITCHES         "---" TR_TRIMS_SWITCHES TR_ON_ONE_SWITCHES
@@ -528,6 +529,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Lowest\0""1\0     ""2\0     ""3\0     ""4\0     ""5\0     ""6\0     ""Highest""Delta\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #define INDENT                 "\001"
 #define LEN_INDENT             1
@@ -895,6 +899,7 @@
 #define TR_UNIT                "Unit"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Add a new sensor..."
 #define TR_CHANNELRANGE        INDENT "Gama de canales"
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Alarma baja"
 #define TR_CRITICALALARM       INDENT "Alarma Critica"
 #define TR_ENABLE_POPUP        "Enable Popup"
diff --git a/radio/src/translations/fi.h.txt b/radio/src/translations/fi.h.txt
index fa54885ce..c92640c46 100644
--- a/radio/src/translations/fi.h.txt
+++ b/radio/src/translations/fi.h.txt
@@ -528,6 +528,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Lowest\0""1\0     ""2\0     ""3\0     ""4\0     ""5\0     ""6\0     ""Highest""Delta\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #define INDENT                 "\001"
 #define LEN_INDENT             1
@@ -895,6 +898,7 @@
 #define TR_UNIT                "Unit"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Add a new sensor..."
 #define TR_CHANNELRANGE        INDENT "Channel Range"
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Low Alarm"
 #define TR_CRITICALALARM       INDENT "Critical Alarm"
 #define TR_ENABLE_POPUP        "Enable Popup"
diff --git a/radio/src/translations/fr.h.txt b/radio/src/translations/fr.h.txt
index 9512a5ae0..3d0b24adb 100644
--- a/radio/src/translations/fr.h.txt
+++ b/radio/src/translations/fr.h.txt
@@ -548,6 +548,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Mini.\0 ""1\0     ""2\0     ""3\0     ""4\0     ""5\0     ""6\0     ""Maxi.\0 ""Diff.\0 "
 
+#define LEN_VANTENNATYPES      "\007"
+#define TR_VANTENNATYPES        "Interne""Externe"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "\007"
@@ -930,6 +933,7 @@
 #define TR_UNIT                "Unité"
 #define TR_TELEMETRY_NEWSENSOR TR(INDENT"Nouveau capteur...", INDENT "Ajout d'un nouveau capteur...")
 #define TR_CHANNELRANGE        TR(INDENT "Canaux", INDENT "Plage de canaux")
+#define TR_ANTENNASELECTION    INDENT "Choix antenne"
 #define TR_LOWALARM            INDENT "Alarme basse"
 #define TR_CRITICALALARM       INDENT "Alarme critique"
 #define TR_ENABLE_POPUP        "Activer Popup"
diff --git a/radio/src/translations/it.h.txt b/radio/src/translations/it.h.txt
index 5f1e170be..f2c4d649d 100644
--- a/radio/src/translations/it.h.txt
+++ b/radio/src/translations/it.h.txt
@@ -551,6 +551,9 @@
 #define LEN_VCELLINDEX         "\010"
 #define TR_VCELLINDEX          "Minore\0 ""1\0      ""2\0      ""3\0      ""4\0      ""5\0      ""6\0      ""Maggiore""Delta\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "\007"
@@ -941,6 +944,7 @@
 #define TR_UNIT                "Unita"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Aggiungi nuovo sensore..."
 #define TR_CHANNELRANGE        INDENT "Numero Canali"
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Allarme Basso"
 #define TR_CRITICALALARM       INDENT "Allarme Critico"
 #define TR_ENABLE_POPUP        "Abilita Popup"
diff --git a/radio/src/translations/nl.h.txt b/radio/src/translations/nl.h.txt
index fa31e3cdc..67092873b 100644
--- a/radio/src/translations/nl.h.txt
+++ b/radio/src/translations/nl.h.txt
@@ -563,6 +563,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Laagste""1e Cel\0""2e Cel\0""3e Cel\0""4e Cel\0""5e Cel\0""6e Cel\0""Hoogste""Delta\0 "
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "\007"
@@ -960,6 +963,7 @@
 #define TR_UNIT                "Eenheid"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Sensor toevoegen ..."
 #define TR_CHANNELRANGE        TR(INDENT "Kanalen", INDENT "Uitgangs Kanalen")  //wg 9XR-Pro
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Waarschuwing"
 #define TR_CRITICALALARM       INDENT "Kritiek Alarm"
 #define TR_ENABLE_POPUP        "Inschakelen Popups"
diff --git a/radio/src/translations/pl.h.txt b/radio/src/translations/pl.h.txt
index 1b4a86b7e..71c16ef44 100644
--- a/radio/src/translations/pl.h.txt
+++ b/radio/src/translations/pl.h.txt
@@ -552,6 +552,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Niskie\0""1\0     ""2\0     ""3\0     ""4\0     ""5\0     ""6\0     ""Wysokie""Delta\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "\007"
@@ -942,6 +945,7 @@
 #define TR_UNIT                "Jedn"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Dodaj nowy czujnik..."
 #define TR_CHANNELRANGE        TR(INDENT "ZakrKn",INDENT "Zakres kanału")
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Alarm niski"
 #define TR_CRITICALALARM       INDENT "Alarm krytyczny"
 #define TR_ENABLE_POPUP        "Aktywuj Popup"
diff --git a/radio/src/translations/pt.h.txt b/radio/src/translations/pt.h.txt
index be11c63a3..3735ea83b 100644
--- a/radio/src/translations/pt.h.txt
+++ b/radio/src/translations/pt.h.txt
@@ -522,6 +522,9 @@
 #define LEN_VCELLINDEX         "\007"
 #define TR_VCELLINDEX          "Lowest\0""1\0     ""2\0     ""3\0     ""4\0     ""5\0     ""6\0     ""Highest""Delta\0"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #define INDENT                 "\001"
 #define LEN_INDENT             1
@@ -889,6 +892,7 @@
 #define TR_UNIT                "Unit"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Add a new sensor..."
 #define TR_CHANNELRANGE        INDENT "Channel Range"
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Low Alarm"
 #define TR_CRITICALALARM       INDENT "Critical Alarm"
 #define TR_ENABLE_POPUP        "Enable Popup"
diff --git a/radio/src/translations/se.h.txt b/radio/src/translations/se.h.txt
index 1cbbce4ae..8f673c6b6 100644
--- a/radio/src/translations/se.h.txt
+++ b/radio/src/translations/se.h.txt
@@ -567,6 +567,9 @@
 #define LEN_VCELLINDEX         "\010"
 #define TR_VCELLINDEX          "Lägsta\0 ""1\0      ""2\0      ""3\0      ""4\0      ""5\0      ""6\0      ""Högsta\0 ""Skillnad"
 
+#define LEN_VANTENNATYPES      "\010"
+#define TR_VANTENNATYPES        "Internal""External"
+
 // ZERO TERMINATED STRINGS
 #if defined(COLORLCD)
   #define INDENT               "   "
@@ -962,6 +965,7 @@
 #define TR_UNIT                "Enhet"
 #define TR_TELEMETRY_NEWSENSOR INDENT "Lägg till sensor..."
 #define TR_CHANNELRANGE        INDENT "Kanalområde"
+#define TR_ANTENNASELECTION    INDENT "Antenna selection"
 #define TR_LOWALARM            INDENT "Låg-alarm"
 #define TR_CRITICALALARM       INDENT "Kritiskt alarm"
 #define TR_ENABLE_POPUP        "Slå på Dialog"