diff --git a/Boards.h b/Boards.h
index d2b4a6f..95856a7 100644
--- a/Boards.h
+++ b/Boards.h
@@ -46,6 +46,7 @@
   #define MODEL_A5            0xA5 // RNode v2.2, 433 MHz with SX1278
   #define MODEL_A6            0xA6 // RNode v2.2, 868 MHz with SX1262
   #define MODEL_AA            0xAA // RNode v2.2, 868 MHz with SX1276
+  #define MODEL_AB            0xAB // RNode v2.2, 2.4 GHz with SX1280
 
   #define PRODUCT_TBEAM       0xE0 // T-Beam devices
   #define BOARD_TBEAM         0x33
@@ -437,6 +438,17 @@
         const int pin_busy = 34;
         const int pin_dio = 33;
         const int pin_tcxo_enable = -1;
+      #elif MODEM == SX1280
+        #define DIO2_AS_RF_SWITCH true
+        #define HAS_BUSY true
+        #define HAS_TCXO true
+        #define HAS_PA true
+        const int pa_max_input = 3;
+        const int pin_busy = 36;
+        const int pin_dio = 9;
+        const int pin_tcxo_enable = -1;
+        const int pin_rxen = -1;
+        const int pin_txen = -1;
       #else
         const int pin_dio = 9;
       #endif
diff --git a/Makefile b/Makefile
index 0d0fb51..f562f8c 100644
--- a/Makefile
+++ b/Makefile
@@ -81,6 +81,9 @@ firmware-t3s3:
 firmware-t3s3_sx127x:
 	arduino-cli compile --log --fqbn "esp32:esp32:esp32s3:CDCOnBoot=cdc" -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x42\" \"-DMODEM=0x01\""
 
+firmware-t3s3_sx1280:
+	arduino-cli compile --log --fqbn "esp32:esp32:esp32s3:CDCOnBoot=cdc" -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x42\" \"-DMODEM=0x04\""
+
 firmware-tdeck:
 	arduino-cli compile --log --fqbn "esp32:esp32:esp32s3:CDCOnBoot=cdc" -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x3B\""
 
diff --git a/sx128x.cpp b/sx128x.cpp
index ecd87a0..402953d 100644
--- a/sx128x.cpp
+++ b/sx128x.cpp
@@ -683,11 +683,15 @@ void sx128x::disableTCXO() {
 }
 
 void sx128x::setTxPower(int level, int outputPin) {
+  #if HAS_PA == true
+    if (level > pa_max_input) { level = pa_max_input; }
+  #else
     if (level > 13) {
         level = 13;
     } else if (level < -18) {
         level = -18;
     }
+  #endif
 
     _txp = level;