diff --git a/Configuration.cpp b/Configuration.cpp
index 3fc6ff94c..c1e84815b 100644
--- a/Configuration.cpp
+++ b/Configuration.cpp
@@ -517,6 +517,7 @@ private:
   qint32 aggressive_;
   qint32 RxBandwidth_;
   double degrade_;
+  double txDelay_;
   bool id_after_73_;
   bool tx_QSY_allowed_;
   bool spot_to_psk_reporter_;
@@ -597,6 +598,7 @@ qint32 Configuration::id_interval () const {return m_->id_interval_;}
 qint32 Configuration::ntrials() const {return m_->ntrials_;}
 qint32 Configuration::aggressive() const {return m_->aggressive_;}
 double Configuration::degrade() const {return m_->degrade_;}
+double Configuration::txDelay() const {return m_->txDelay_;}
 qint32 Configuration::RxBandwidth() const {return m_->RxBandwidth_;}
 bool Configuration::id_after_73 () const {return m_->id_after_73_;}
 bool Configuration::tx_QSY_allowed () const {return m_->tx_QSY_allowed_;}
@@ -1022,6 +1024,7 @@ void Configuration::impl::initialize_models ()
   ui_->labNewCall->setStyleSheet(QString("background: %1").arg(color_NewCall_.name()));
   ui_->CW_id_interval_spin_box->setValue (id_interval_);  
   ui_->sbNtrials->setValue (ntrials_);
+  ui_->sbTxDelay->setValue (txDelay_);
   ui_->sbAggressive->setValue (aggressive_);
   ui_->sbDegrade->setValue (degrade_);
   ui_->sbBandwidth->setValue (RxBandwidth_);
@@ -1150,6 +1153,7 @@ void Configuration::impl::read_settings ()
 
   id_interval_ = settings_->value ("IDint", 0).toInt ();
   ntrials_ = settings_->value ("nTrials", 6).toInt ();
+  txDelay_ = settings_->value ("TxDelay",0.2).toDouble();
   aggressive_ = settings_->value ("Aggressive", 0).toInt ();
   RxBandwidth_ = settings_->value ("RxBandwidth", 2500).toInt ();
   save_directory_ = settings_->value ("SaveDir", default_save_directory_.absolutePath ()).toString ();
@@ -1301,6 +1305,7 @@ void Configuration::impl::write_settings ()
   settings_->setValue ("DecodedTextFont", decoded_text_font_.toString ());
   settings_->setValue ("IDint", id_interval_);
   settings_->setValue ("nTrials", ntrials_);
+  settings_->setValue ("TxDelay", txDelay_);
   settings_->setValue ("Aggressive", aggressive_);
   settings_->setValue ("RxBandwidth", RxBandwidth_);
   settings_->setValue ("PTTMethod", QVariant::fromValue (rig_params_.ptt_type));
@@ -1734,6 +1739,7 @@ void Configuration::impl::accept ()
   spot_to_psk_reporter_ = ui_->psk_reporter_check_box->isChecked ();
   id_interval_ = ui_->CW_id_interval_spin_box->value ();
   ntrials_ = ui_->sbNtrials->value ();
+  txDelay_ = ui_->sbTxDelay->value ();
   aggressive_ = ui_->sbAggressive->value ();
   degrade_ = ui_->sbDegrade->value ();
   RxBandwidth_ = ui_->sbBandwidth->value ();
diff --git a/Configuration.hpp b/Configuration.hpp
index 22d88a7a8..91269bad5 100644
--- a/Configuration.hpp
+++ b/Configuration.hpp
@@ -99,6 +99,7 @@ public:
   qint32 aggressive() const;
   qint32 RxBandwidth() const;
   double degrade() const;
+  double txDelay() const;
   bool id_after_73 () const;
   bool tx_QSY_allowed () const;
   bool spot_to_psk_reporter () const;
diff --git a/Configuration.ui b/Configuration.ui
index dc35b5b39..7750ae452 100644
--- a/Configuration.ui
+++ b/Configuration.ui
@@ -2240,7 +2240,7 @@ Right click for insert and delete options.</string>
               </property>
              </widget>
             </item>
-            <item row="2" column="0">
+            <item row="3" column="0">
              <widget class="QCheckBox" name="cbx2ToneSpacing">
               <property name="toolTip">
                <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Generate Tx audio with twice the normal tone spacing.  Intended for special LF/MF transmitters that use a divide-by-2 before generating RF.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
@@ -2250,6 +2250,35 @@ Right click for insert and delete options.</string>
               </property>
              </widget>
             </item>
+            <item row="2" column="0">
+             <widget class="QLabel" name="label_11">
+              <property name="text">
+               <string>Tx delay:</string>
+              </property>
+             </widget>
+            </item>
+            <item row="2" column="1">
+             <widget class="QDoubleSpinBox" name="sbTxDelay">
+              <property name="toolTip">
+               <string>Minimum delay between assertion of PTT and start of Tx audio.</string>
+              </property>
+              <property name="suffix">
+               <string>  s</string>
+              </property>
+              <property name="decimals">
+               <number>1</number>
+              </property>
+              <property name="minimum">
+               <double>0.200000000000000</double>
+              </property>
+              <property name="maximum">
+               <double>2.000000000000000</double>
+              </property>
+              <property name="singleStep">
+               <double>0.100000000000000</double>
+              </property>
+             </widget>
+            </item>
            </layout>
           </item>
          </layout>
@@ -2506,12 +2535,12 @@ soundcard changes</string>
   </connection>
  </connections>
  <buttongroups>
-  <buttongroup name="CAT_handshake_button_group"/>
+  <buttongroup name="TX_audio_source_button_group"/>
   <buttongroup name="TX_mode_button_group"/>
   <buttongroup name="split_mode_button_group"/>
-  <buttongroup name="TX_audio_source_button_group"/>
-  <buttongroup name="CAT_stop_bits_button_group"/>
   <buttongroup name="PTT_method_button_group"/>
+  <buttongroup name="CAT_stop_bits_button_group"/>
+  <buttongroup name="CAT_handshake_button_group"/>
   <buttongroup name="CAT_data_bits_button_group"/>
  </buttongroups>
 </ui>
diff --git a/mainwindow.cpp b/mainwindow.cpp
index e7d1dd8ee..4cf089a16 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -2672,8 +2672,8 @@ void MainWindow::guiUpdate()
         Q_EMIT m_config.transceiver_tx_frequency (tx_frequency);
       }
 
-      Q_EMIT m_config.transceiver_ptt (true);       //Assert the PTT
-      ptt1Timer.start(200);                        //Sequencer delay
+      Q_EMIT m_config.transceiver_ptt (true);            //Assert the PTT
+      ptt1Timer.start(int(1000.0*m_config.txDelay()));   //Start-of-transmission sequencer delay
     }
     if(!m_bTxTime and !m_tune) m_btxok=false;       //Time to stop transmitting
   }
@@ -3041,7 +3041,7 @@ void MainWindow::stopTx()
     tx_status_label.setStyleSheet("");
     tx_status_label.setText("");
   }
-  ptt0Timer.start(200);                       //Sequencer delay
+  ptt0Timer.start(200);                       //end-of-transmission sequencer delay
   monitor (true);
   statusUpdate ();
 }