diff --git a/Configuration.ui b/Configuration.ui
index 10676b462..2caba429f 100644
--- a/Configuration.ui
+++ b/Configuration.ui
@@ -2308,10 +2308,10 @@ Right click for insert and delete options.</string>
              <number>1</number>
             </property>
             <property name="minimum">
-             <double>0.200000000000000</double>
+             <double>0.000000000000000</double>
             </property>
             <property name="maximum">
-             <double>0.500000000000000</double>
+             <double>2.000000000000000</double>
             </property>
             <property name="singleStep">
              <double>0.100000000000000</double>
@@ -2616,12 +2616,12 @@ soundcard changes</string>
   </connection>
  </connections>
  <buttongroups>
+  <buttongroup name="CAT_stop_bits_button_group"/>
+  <buttongroup name="CAT_data_bits_button_group"/>
   <buttongroup name="CAT_handshake_button_group"/>
   <buttongroup name="TX_audio_source_button_group"/>
-  <buttongroup name="CAT_data_bits_button_group"/>
+  <buttongroup name="TX_mode_button_group"/>
   <buttongroup name="split_mode_button_group"/>
   <buttongroup name="PTT_method_button_group"/>
-  <buttongroup name="CAT_stop_bits_button_group"/>
-  <buttongroup name="TX_mode_button_group"/>
  </buttongroups>
 </ui>
diff --git a/mainwindow.cpp b/mainwindow.cpp
index bdc2230fc..4c8c28c74 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -345,6 +345,7 @@ MainWindow::MainWindow(QDir const& temp_directory, bool multiple,
   m_bandEdited {false},
   m_splitMode {false},
   m_monitoring {false},
+  m_tx_when_ready {false},
   m_transmitting {false},
   m_tune {false},
   m_tx_watchdog {false},
@@ -2941,7 +2942,7 @@ void MainWindow::guiUpdate()
       setXIT (ui->TxFreqSpinBox->value ());
 
       Q_EMIT m_config.transceiver_ptt (true);            //Assert the PTT
-      ptt1Timer.start(int(1000.0*m_config.txDelay()));   //Start-of-transmission sequencer delay
+      m_tx_when_ready = true;
     }
     if(!m_bTxTime and !m_tune) m_btxok=false;       //Time to stop transmitting
   }
@@ -5289,6 +5290,15 @@ void MainWindow::handle_transceiver_update (Transceiver::TransceiverState const&
   // qDebug () << "MainWindow::handle_transceiver_update:" << s;
   Transceiver::TransceiverState old_state {m_rigState};
   //transmitDisplay (s.ptt ());
+  if (s.ptt () && !m_rigState.ptt ()) // safe to start audio
+                                      // (caveat - DX Lab Suite Commander)
+    {
+      if (m_tx_when_ready && g_iptt) // waiting to Tx and still needed
+        {
+          ptt1Timer.start(1000 * m_config.txDelay ()); //Start-of-transmission sequencer delay
+        }
+      m_tx_when_ready = false;
+    }
   m_rigState = s;
   if (old_state.online () == false && s.online () == true)
     {
diff --git a/mainwindow.h b/mainwindow.h
index dbefab216..8eec6aed3 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -526,6 +526,7 @@ private:
   bool m_bandEdited;
   bool m_splitMode;
   bool m_monitoring;
+  bool m_tx_when_ready;
   bool m_transmitting;
   bool m_tune;
   bool m_tx_watchdog;           // true when watchdog triggered