Add 70cm amateur radio region support

src/graphics/draw/MenuHandler.cpp

@@ -253,6 +253,9 @@ void menuHandler::LoraRegionPicker(uint32_t duration)
         {"ITU2_2M (144-148)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU2_2M},
         {"ITU3_2M (144-148)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU3_2M},
         {"ITU2_125CM (220-225)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU2_125CM},
+        {"ITU1_70CM (430-440)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU1_70CM},
+        {"ITU2_70CM (420-450)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU2_70CM},
+        {"ITU3_70CM (430-450)", OptionsAction::Select, meshtastic_Config_LoRaConfig_RegionCode_ITU3_70CM},
 
     };
 

src/graphics/niche/InkHUD/Applets/System/Menu/MenuAction.h

@@ -70,6 +70,9 @@ enum MenuAction {
     SET_REGION_ITU2_2M,
     SET_REGION_ITU3_2M,
     SET_REGION_ITU2_125CM,
+    SET_REGION_ITU1_70CM,
+    SET_REGION_ITU2_70CM,
+    SET_REGION_ITU3_70CM,
     // Device Roles
     SET_ROLE_CLIENT,
     SET_ROLE_CLIENT_MUTE,

src/graphics/niche/InkHUD/Applets/System/Menu/MenuApplet.cpp

@@ -800,6 +800,18 @@ void InkHUD::MenuApplet::execute(MenuItem item)
         applyLoRaRegion(meshtastic_Config_LoRaConfig_RegionCode_ITU2_125CM);
         break;
 
+    case SET_REGION_ITU1_70CM:
+        applyLoRaRegion(meshtastic_Config_LoRaConfig_RegionCode_ITU1_70CM);
+        break;
+
+    case SET_REGION_ITU2_70CM:
+        applyLoRaRegion(meshtastic_Config_LoRaConfig_RegionCode_ITU2_70CM);
+        break;
+
+    case SET_REGION_ITU3_70CM:
+        applyLoRaRegion(meshtastic_Config_LoRaConfig_RegionCode_ITU3_70CM);
+        break;
+
     // Roles
     case SET_ROLE_CLIENT:
         applyDeviceRole(meshtastic_Config_DeviceConfig_Role_CLIENT);

src/mesh/RadioInterface.cpp

@@ -283,6 +283,33 @@ const RegionInfo regions[] = {
     */
     RDEF(ITU2_125CM, 220.0f, 225.0f, 100, 30, false, false, PROFILE_HAM_100KHZ, PRESET(NARROW_SLOW), 37),
 
+    /*
+        ITU Region 1 (Europe, Africa, Middle East, former USSR) amateur 70cm allocation: 430.000 - 440.000 MHz.
+        Power limit is the regulatory ceiling (1 W / 30 dBm) — individual hardware will cap below this
+        via its own PA curve; the field here is just the legal upper bound.
+
+        Default slot: 37 (433.650 MHz)
+    */
+    RDEF(ITU1_70CM, 430.0f, 440.0f, 100, 30, false, false, PROFILE_HAM_100KHZ, PRESET(NARROW_SLOW), 37),
+
+    /*
+        ITU Region 2 (Americas) amateur 70cm allocation: 420.000 - 450.000 MHz.
+        Typical admin rules (e.g. US FCC Part 97) allow well above 30 dBm for licensed operators.
+        Note: Some countries do not allocate 420-430 MHz or 440-450 MHz. Check local law!
+
+        Default slot: 137 (433.650 MHz)
+    */
+    RDEF(ITU2_70CM, 420.0f, 450.0f, 100, 30, false, false, PROFILE_HAM_100KHZ, PRESET(NARROW_SLOW), 137),
+
+    /*
+        ITU Region 3 (Asia/Pacific) amateur 70cm allocation: 430.000 - 450.000 MHz.
+        Typical admin rules allow well above 30 dBm for licensed operators.
+        Note: Some countries do not allocate 440-450 MHz. Check local law!
+
+        Default slot: 37 (433.650 MHz)
+    */
+    RDEF(ITU3_70CM, 430.0f, 450.0f, 100, 30, false, false, PROFILE_HAM_100KHZ, PRESET(NARROW_SLOW), 37),
+
     /*
        2.4 GHZ WLAN Band equivalent. Only for SX128x chips.
     */