diff --git a/widgets/mainwindow.cpp b/widgets/mainwindow.cpp
index 0cd19b553..626324e10 100644
--- a/widgets/mainwindow.cpp
+++ b/widgets/mainwindow.cpp
@@ -4036,7 +4036,8 @@ void MainWindow::stopTx2()
     on_stopTxButton_clicked ();
     m_nTx73 = 0;
   }
-  if(m_mode.startsWith ("WSPR") and m_ntr==-1 and !m_tuneup) {
+  if(((m_mode.startsWith("WSPR") and m_ntr==-1) or m_mode=="FT4") and
+     !m_tuneup) {
     m_wideGraph->setWSPRtransmitted();
     WSPR_scheduling ();
     m_ntr=0;
diff --git a/widgets/plotter.cpp b/widgets/plotter.cpp
index 4fad379d8..813e2bc31 100644
--- a/widgets/plotter.cpp
+++ b/widgets/plotter.cpp
@@ -166,7 +166,7 @@ void CPlotter::draw(float swide[], bool bScroll, bool bRed)
 
   ymin=1.e30;
   if(swide[0]>1.e29 and swide[0]< 1.5e30) painter1.setPen(Qt::green);
-  if(swide[0]>1.4e30) painter1.setPen(Qt::yellow);
+  if(swide[0]>1.4e30) painter1.setPen(Qt::red);
   if(!m_bReplot) {
     m_j=0;
     int irow=-1;
diff --git a/widgets/widegraph.cpp b/widgets/widegraph.cpp
index b4601ba4c..1f3110cee 100644
--- a/widgets/widegraph.cpp
+++ b/widgets/widegraph.cpp
@@ -187,7 +187,8 @@ void WideGraph::dataSink2(float s[], float df3, int ihsym, int ndiskdata)  //dat
 // Time according to this computer
     qint64 ms = QDateTime::currentMSecsSinceEpoch() % 86400000;
     int ntr = (ms/1000) % m_TRperiod;
-    if((ndiskdata && ihsym <= m_waterfallAvg) || (!ndiskdata && ntr<m_ntr0)) {
+    if((ndiskdata && ihsym <= m_waterfallAvg) || (!ndiskdata &&
+       (ntr<m_ntr0 || (m_mode=="FT4" and m_bHaveTransmitted)))) {
       float flagValue=1.0e30;
       if(m_bHaveTransmitted) flagValue=2.0e30;
       for(int i=0; i<MAX_SCREENSIZE; i++) {
diff --git a/widgets/widegraph.h b/widgets/widegraph.h
index a809a6c8c..2b172ef7d 100644
--- a/widgets/widegraph.h
+++ b/widgets/widegraph.h
@@ -108,7 +108,7 @@ private:
 
   bool   m_bFlatten;
   bool   m_bRef;
-  bool   m_bHaveTransmitted;    //Set true at end of a WSPR transmission
+  bool   m_bHaveTransmitted;    //Set true at end of a WSPR or FT4 transmission
 
   QString m_rxBand;
   QString m_mode;