diff --git a/IO.cpp b/IO.cpp
index f64178c..951cd48 100644
--- a/IO.cpp
+++ b/IO.cpp
@@ -74,6 +74,7 @@ const uint16_t DC_OFFSET = 2048U;
 #define PIN_DSTAR              9
 #define PIN_DMR                8
 #define PIN_YSF                7
+#define PIN_RSSI               60  
 #define ADC_CHER_Chan          (1<<7)                 // ADC on Due pin A0  - Due AD7 - (1 << 7)
 #define ADC_ISR_EOC_Chan       ADC_ISR_EOC7
 #define ADC_CDR_Chan           7
diff --git a/SerialPort.cpp b/SerialPort.cpp
index 3ed94d2..36841a0 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -61,7 +61,11 @@ const uint8_t MMDVM_DEBUG3       = 0xF3U;
 const uint8_t MMDVM_DEBUG4       = 0xF4U;
 const uint8_t MMDVM_DEBUG5       = 0xF5U;
 
+#if defined(EXTERNAL_OSC)
+const uint8_t HARDWARE[]         = "MMDVM 20160816 24kHz TCXO (D-Star/DMR/System Fusion/CW Id)";
+#else
 const uint8_t HARDWARE[]         = "MMDVM 20160816 24kHz (D-Star/DMR/System Fusion/CW Id)";
+#endif
 
 const uint8_t PROTOCOL_VERSION   = 1U;