diff --git a/Configuration.cpp b/Configuration.cpp
index 19e751e48..bb7efdf12 100644
--- a/Configuration.cpp
+++ b/Configuration.cpp
@@ -426,7 +426,7 @@ QString Configuration::my_grid () const {return m_->my_grid_;}
 QFont Configuration::decoded_text_font () const {return m_->decoded_text_font_;}
 qint32 Configuration::id_interval () const {return m_->id_interval_;}
 bool Configuration::id_after_73 () const {return m_->id_after_73_;}
-bool Configuration::tx_QSY_allowed () const {return m_->tx_QSY_allowed_ || !split_mode ();}
+bool Configuration::tx_QSY_allowed () const {return m_->tx_QSY_allowed_;}
 bool Configuration::spot_to_psk_reporter () const {return m_->spot_to_psk_reporter_;}
 bool Configuration::monitor_off_at_startup () const {return m_->monitor_off_at_startup_;}
 bool Configuration::log_as_RTTY () const {return m_->log_as_RTTY_;}
diff --git a/OmniRigTransceiver.cpp b/OmniRigTransceiver.cpp
index 2344cc0c5..85484a544 100644
--- a/OmniRigTransceiver.cpp
+++ b/OmniRigTransceiver.cpp
@@ -631,7 +631,9 @@ void OmniRigTransceiver::do_ptt (bool on)
       if (state ().ptt () != on)
         {
           update_PTT (on);
-          update_complete ();
+
+          // no need for this as currently update_PTT() does it for us
+          // update_complete ();
         }
     }
 }
diff --git a/TransceiverBase.cpp b/TransceiverBase.cpp
index 78fa2a295..738ad7024 100644
--- a/TransceiverBase.cpp
+++ b/TransceiverBase.cpp
@@ -248,7 +248,14 @@ void TransceiverBase::update_mode (MODE m)
 
 void TransceiverBase::update_PTT (bool state)
 {
+  auto prior = m_->state_.ptt ();
   m_->state_.ptt (state);
+  if (state != prior)
+    {
+      // always signal PTT changes because some MainWindow logic
+      // depends on it
+      update_complete ();
+    }
 }
 
 void TransceiverBase::update_complete ()
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 0f782cb41..38d7d0e66 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -2987,7 +2987,7 @@ void MainWindow::transmitDisplay (bool transmitting)
       m_btxok=true;
     }
 
-  auto QSY_allowed = !transmitting || m_config.tx_QSY_allowed ();
+  auto QSY_allowed = !transmitting || m_config.tx_QSY_allowed () || !m_config.split_mode ();
   if (ui->cbTxLock->isChecked ())
     {
       ui->RxFreqSpinBox->setEnabled (QSY_allowed);
@@ -2996,7 +2996,9 @@ void MainWindow::transmitDisplay (bool transmitting)
   ui->TxFreqSpinBox->setEnabled (QSY_allowed);
   ui->pbR2T->setEnabled (QSY_allowed);
   ui->cbTxLock->setEnabled (QSY_allowed);
-  ui->cbPlus2kHz->setEnabled (QSY_allowed);
+
+  // only allow +2kHz when not transmitting or if TX QSYs are allowed
+  ui->cbPlus2kHz->setEnabled (!transmitting || m_config.tx_QSY_allowed ());
 
   // the following are always disallowed in transmit
   ui->menuMode->setEnabled (!transmitting);