diff --git a/Debug.h b/Debug.h
index bb16563..667856d 100644
--- a/Debug.h
+++ b/Debug.h
@@ -1,5 +1,5 @@
 /*
- *   Copyright (C) 2015 by Jonathan Naylor G4KLX
+ *   Copyright (C) 2015,2016 by Jonathan Naylor G4KLX
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -31,8 +31,6 @@
 #define  DEBUG4(a,b,c,d)    serial.writeDebug((a),(b),(c),(d))
 #define  DEBUG5(a,b,c,d,e)  serial.writeDebug((a),(b),(c),(d),(e))
 #define  ASSERT(a)          serial.writeAssert((a),#a,__FILE__,__LINE__)
-#define  DUMP(a,b)          serial.writeDump((a),(b))
-#define  SAMPLES(a,b)       serial.writeSamples((a),(b))
 
 #else
 
@@ -42,8 +40,6 @@
 #define  DEBUG4(a,b,c,d)    
 #define  DEBUG5(a,b,c,d,e)  
 #define  ASSERT(a)          
-#define  DUMP(a,b)          
-#define  SAMPLES(a,b)       
 
 #endif
 
diff --git a/SerialPort.cpp b/SerialPort.cpp
index 9be0ad0..2c73ef2 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -51,13 +51,11 @@ const uint8_t MMDVM_YSF_LOST     = 0x21U;
 const uint8_t MMDVM_ACK          = 0x70U;
 const uint8_t MMDVM_NAK          = 0x7FU;
 
-const uint8_t MMDVM_DUMP         = 0xF0U;
 const uint8_t MMDVM_DEBUG1       = 0xF1U;
 const uint8_t MMDVM_DEBUG2       = 0xF2U;
 const uint8_t MMDVM_DEBUG3       = 0xF3U;
 const uint8_t MMDVM_DEBUG4       = 0xF4U;
 const uint8_t MMDVM_DEBUG5       = 0xF5U;
-const uint8_t MMDVM_SAMPLES      = 0xF8U;
 
 const uint8_t HARDWARE[]         = "MMDVM 20160317 (D-Star/DMR/System Fusion)";
 
@@ -694,42 +692,6 @@ void CSerialPort::write(const uint8_t* data, uint16_t length, bool flush)
 #endif
 }
 
-void CSerialPort::writeDump(const uint8_t* data, uint8_t length)
-{
-  ASSERT(length <= 252U);
-
-  uint8_t reply[255U];
-
-  reply[0U] = MMDVM_FRAME_START;
-  reply[1U] = 0U;
-  reply[2U] = MMDVM_DUMP;
-
-  uint8_t count = length * sizeof(uint8_t) + 3U;
-  ::memcpy(reply + 3U, data, length * sizeof(uint8_t));
-
-  reply[1U] = count;
-
-  write(reply, count, true);
-}
-
-void CSerialPort::writeSamples(const q15_t* data, uint8_t length)
-{
-  ASSERT(length <= 126U);
-
-  uint8_t reply[255U];
-
-  reply[0U] = MMDVM_FRAME_START;
-  reply[1U] = 0U;
-  reply[2U] = MMDVM_SAMPLES;
-
-  uint8_t count = length * sizeof(q15_t) + 3U;
-  ::memcpy(reply + 3U, data, length * sizeof(q15_t));
-
-  reply[1U] = count;
-
-  write(reply, count, true);
-}
-
 void CSerialPort::writeDebug(const char* text)
 {
   uint8_t reply[130U];
diff --git a/SerialPort.h b/SerialPort.h
index c6cb0a7..bcf4d05 100644
--- a/SerialPort.h
+++ b/SerialPort.h
@@ -44,10 +44,6 @@ public:
 
   void writeCalData(const uint8_t* data, uint8_t length);
 
-  void writeDump(const uint8_t* data, uint8_t length);
-
-  void writeSamples(const q15_t* data, uint8_t length);
-  
   void writeDebug(const char* text);
   void writeDebug(const char* text, int16_t n1);
   void writeDebug(const char* text, int16_t n1, int16_t n2);