diff --git a/FM.cpp b/FM.cpp
index 5bed1f1..655c467 100644
--- a/FM.cpp
+++ b/FM.cpp
@@ -41,7 +41,6 @@ m_callsignTimer(),
 m_timeoutTimer(),
 m_holdoffTimer(),
 m_kerchunkTimer(),
-m_kerchunkTX(true),
 m_ackMinTimer(),
 m_ackDelayTimer(),
 m_hangTimer(),
@@ -255,7 +254,7 @@ uint8_t CFM::setAck(const char* rfAck, uint8_t speed, uint16_t frequency, uint8_
   return m_rfAck.setParams(rfAck, speed, frequency, level, level);
 }
 
-uint8_t CFM::setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssHighThreshold, uint8_t ctcssLowThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, bool kerchunkTX, uint8_t hangTime, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel)
+uint8_t CFM::setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssHighThreshold, uint8_t ctcssLowThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, uint8_t hangTime, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel)
 {
   m_useCOS    = useCOS;
   m_cosInvert = cosInvert;
@@ -265,7 +264,6 @@ uint8_t CFM::setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFreque
   m_timeoutTimer.setTimeout(timeout, 0U);
 
   m_kerchunkTimer.setTimeout(kerchunkTime, 0U);
-  m_kerchunkTX = kerchunkTX;
 
   m_hangTimer.setTimeout(hangTime, 0U);
 
@@ -420,7 +418,7 @@ void CFM::listeningStateDuplex(bool validRFSignal, bool validExtSignal)
         sendCallsign();
     }
 
-    if (m_state == FS_RELAYING_RF || (m_state == FS_KERCHUNK_RF && m_kerchunkTX)) {
+    if (m_state == FS_RELAYING_RF || m_state == FS_KERCHUNK_RF) {
       insertSilence(50U);
 
       beginRelaying();
@@ -447,7 +445,7 @@ void CFM::listeningStateDuplex(bool validRFSignal, bool validExtSignal)
         sendCallsign();
     }
 
-    if (m_state == FS_RELAYING_EXT || (m_state == FS_KERCHUNK_EXT && m_kerchunkTX)) {
+    if (m_state == FS_RELAYING_EXT || m_state == FS_KERCHUNK_EXT) {
       insertSilence(50U);
 
       beginRelaying();
@@ -493,19 +491,6 @@ void CFM::kerchunkRFStateDuplex(bool validSignal)
       DEBUG1("State to RELAYING_RF");
       m_state = FS_RELAYING_RF;
       m_kerchunkTimer.stop();
-      if (!m_kerchunkTX) {
-        insertSilence(50U);
-
-        beginRelaying();
-
-        m_callsignTimer.start();
-
-        io.setDecode(true);
-        io.setADCDetection(true);
-
-        m_statusTimer.start();
-        serial.writeFMStatus(m_state);
-      }
       if (m_callsignAtStart && m_callsignAtLatch) {
         sendCallsign();
         m_callsignTimer.start();
@@ -649,16 +634,6 @@ void CFM::kerchunkExtStateDuplex(bool validSignal)
       DEBUG1("State to RELAYING_EXT");
       m_state = FS_RELAYING_EXT;
       m_kerchunkTimer.stop();
-      if (!m_kerchunkTX) {
-        insertSilence(50U);
-
-        beginRelaying();
-
-        m_callsignTimer.start();
-
-        m_statusTimer.start();
-        serial.writeFMStatus(m_state);
-      }
       if (m_callsignAtStart && m_callsignAtLatch) {
         sendCallsign();
         m_callsignTimer.start();
diff --git a/FM.h b/FM.h
index 8dcaa4a..12c7d67 100644
--- a/FM.h
+++ b/FM.h
@@ -60,7 +60,7 @@ public:
 
   uint8_t setCallsign(const char* callsign, uint8_t speed, uint16_t frequency, uint8_t time, uint8_t holdoff, uint8_t highLevel, uint8_t lowLevel, bool callsignAtStart, bool callsignAtEnd, bool callsignAtLatch);
   uint8_t setAck(const char* rfAck, uint8_t speed, uint16_t frequency, uint8_t minTime, uint16_t delay, uint8_t level);
-  uint8_t setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssHighThreshold, uint8_t ctcssLowThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, bool kerchunkTX, uint8_t hangTime, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel);
+  uint8_t setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssHighThreshold, uint8_t ctcssLowThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, uint8_t hangTime, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel);
   uint8_t setExt(const char* ack, uint8_t audioBoost, uint8_t speed, uint16_t frequency, uint8_t level);
 
   uint8_t getSpace() const;
@@ -82,7 +82,6 @@ private:
   CFMTimer             m_timeoutTimer;
   CFMTimer             m_holdoffTimer;
   CFMTimer             m_kerchunkTimer;
-  bool                 m_kerchunkTX;
   CFMTimer             m_ackMinTimer;
   CFMTimer             m_ackDelayTimer;
   CFMTimer             m_hangTimer;
diff --git a/SerialPort.cpp b/SerialPort.cpp
index 9e657e4..04487b0 100644
--- a/SerialPort.cpp
+++ b/SerialPort.cpp
@@ -109,7 +109,7 @@ const uint8_t MMDVM_DEBUG5       = 0xF5U;
 #define	HW_TYPE	"MMDVM"
 #endif
 
-#define DESCRIPTION "20200706 (D-Star/DMR/System Fusion/P25/NXDN/POCSAG/FM/AX.25)"
+#define DESCRIPTION "20200707 (D-Star/DMR/System Fusion/P25/NXDN/POCSAG/FM/AX.25)"
 
 #if defined(GITVERSION)
 #define concat(h, a, b, c) h " " a " " b " GitID #" c ""
@@ -467,13 +467,12 @@ uint8_t CSerialPort::setFMParams3(const uint8_t* data, uint16_t length)
 
   bool     useCOS         = (data[8U] & 0x01U) == 0x01U;
   bool     cosInvert      = (data[8U] & 0x02U) == 0x02U;
-  bool     kerchunkTX     = (data[8U] & 0x04U) == 0x04U;
 
   uint8_t  rfAudioBoost   = data[9U];
   uint8_t  maxDev         = data[10U];
   uint8_t  rxLevel        = data[11U];
 
-  return fm.setMisc(timeout, timeoutLevel, ctcssFrequency, ctcssHighThreshold, ctcssLowThreshold, ctcssLevel, kerchunkTime, kerchunkTX, hangTime, useCOS, cosInvert, rfAudioBoost, maxDev, rxLevel);
+  return fm.setMisc(timeout, timeoutLevel, ctcssFrequency, ctcssHighThreshold, ctcssLowThreshold, ctcssLevel, kerchunkTime, hangTime, useCOS, cosInvert, rfAudioBoost, maxDev, rxLevel);
 }
 
 uint8_t CSerialPort::setFMParams4(const uint8_t* data, uint16_t length)