diff --git a/sx126x.cpp b/sx126x.cpp
index 5f6db55..22df326 100644
--- a/sx126x.cpp
+++ b/sx126x.cpp
@@ -718,7 +718,7 @@ void sx126x::sleep()
 void sx126x::enableTCXO() {
   #if HAS_TCXO
     #if BOARD_MODEL == BOARD_RAK4630
-      uint8_t buf[4] = {MODE_TCXO_3_3V_6X, 0x00, 0x00, 0xFF};
+      uint8_t buf[4] = {MODE_TCXO_1_8V_6X, 0x00, 0x00, 0xFF};
     #elif BOARD_MODEL == BOARD_TBEAM
       uint8_t buf[4] = {MODE_TCXO_1_8V_6X, 0x00, 0x00, 0xFF};
     #elif BOARD_MODEL == BOARD_RNODE_NG_22
@@ -984,4 +984,4 @@ void ISR_VECT sx126x::onDio0Rise()
 
 sx126x sx126x_modem;
 
-#endif
\ No newline at end of file
+#endif