diff --git a/commons.h b/commons.h
index 90ed351bd..e1b7f73bf 100644
--- a/commons.h
+++ b/commons.h
@@ -6,9 +6,12 @@
 extern "C" {
 
 extern struct {                     //This is "common/mscom/..." in Fortran
-  short int d2[30*48000];           //Raw data
+  short int d2[30*48000];           //Raw data from soundcard
+  float s1[215];
+  float s2[215];
   int kin;
   int ndiskdat;
+  int kline;
 } mscom_;
 }
 
diff --git a/libm65/specjtms.f90 b/libm65/specjtms.f90
index 9d2c2ed74..8da7ed3fb 100644
--- a/libm65/specjtms.f90
+++ b/libm65/specjtms.f90
@@ -8,7 +8,7 @@ subroutine specjtms(k,px,pxsmo,spk0,f0)
   real x(MAXFFT)
   complex cx(MAXFFT),cx2(MAXFFT)
   logical first
-  common/mscom/id(1440000),s1(215),s2(215)
+  common/mscom/id(1440000),s1(215),s2(215),kin,ndiskdat,kline
   data first/.true./
   save
  
@@ -80,9 +80,10 @@ subroutine specjtms(k,px,pxsmo,spk0,f0)
      endif
   enddo
   spk0=0.5*db(spk0) - 7.0
+  kline=k/2048
 !  write(14,3001) k/2048,spk0,f0,phi0
 !3001 format(i8,3f12.3)
-  call flush(14)
+!  call flush(14)
 
   return
 end subroutine specjtms
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 0825ab8ba..d30482bb8 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -420,7 +420,7 @@ void MainWindow::dataSink(int k)
   float pxave=10.0*log10(sqave/2048.0) - 23.0;
 
   specjtms_(&k,&px,&pxsmo,&spk0,&f0);
-  if(spk0 > 3.0) qDebug() << (k-2048.0)/48000.0 << spk0 << f0;
+//  if(spk0 > 3.0) qDebug() << (k-2048.0)/48000.0 << spk0 << f0;
   QString t;
   t.sprintf(" Rx noise: %5.1f ",pxave);
   lab2->setText(t);
diff --git a/plotter.cpp b/plotter.cpp
index 46ceffcfc..6ff50f95a 100644
--- a/plotter.cpp
+++ b/plotter.cpp
@@ -77,8 +77,7 @@ void CPlotter::paintEvent(QPaintEvent *)                    // paintEvent()
   int h = (m_Size.height()-60)/2;
   painter.drawPixmap(0,0,m_ScalePixmap);
   painter.drawPixmap(0,30,m_WaterfallPixmap);
-  m_2Dspec=true;
-  if(m_2Dspec) {
+  if(true) {
 //    painter.drawPixmap(0,h+30,m_ScalePixmap);
     painter.drawPixmap(0,h+60,m_2DPixmap);
     m_paintEventBusy=false;
@@ -111,26 +110,54 @@ void CPlotter::draw(float green[], int ig)                       //draw()
 {
   int i,j,w,h;
   float y;
+  int y1;
 
   w = m_WaterfallPixmap.width();
   h = m_WaterfallPixmap.height();
   double gain = pow(10.0,0.05*(m_plotGain+7));
 
-  //move current data down one line
-  //(must do this before attaching a QPainter object)
-  m_WaterfallPixmap.scroll(0,1,0,0,w,h);
-  m_ZoomWaterfallPixmap.scroll(0,1,0,0, w, h);
-  memmove(&m_zwf[32768],m_zwf,32768*(h-1));
+//move current data down one line
+//(must do this before attaching a QPainter object)
+//  m_WaterfallPixmap.scroll(0,1,0,0,w,h);
+//  m_ZoomWaterfallPixmap.scroll(0,1,0,0, w, h);
+//  memmove(&m_zwf[32768],m_zwf,32768*(h-1));
+
   QPainter painter1(&m_WaterfallPixmap);
   QPainter painter2D(&m_2DPixmap);
-
   painter2D.setPen(Qt::green);
   QRect tmp(0,0,w,h);
   painter2D.fillRect(tmp,Qt::black);
   QPoint LineBuf[MAX_SCREENSIZE];
-  j=0;
+
+  for(i=0; i<256; i++) {                     //Zero the histograms
+    m_hist1[i]=0;
+    m_hist2[i]=0;
+  }
+
+
+  int kline=mscom_.kline;
+
+  for(i=0; i<h; i++) {
+    if(2*i < 215) {
+      if(m_2Dspec) {
+        y=10.0*log10(0.5*(mscom_.s2[2*i-1] + mscom_.s2[2*i]));
+        y1 = 5.0*gain*(y + 13 - m_plotZero);
+      } else {
+        y=10.0*log10(0.5*(mscom_.s1[2*i-1] + mscom_.s1[2*i]));
+        y1 = 5.0*gain*(y + 55 - m_plotZero);
+      }
+    } else {
+      y1=0;
+    }
+    if (y1<0) y1=0;
+    if (y1>254) y1=254;
+    m_hist1[y1]++;
+    painter1.setPen(m_ColorTbl[y1]);
+    painter1.drawPoint(kline,h-i);
+  }
 
   painter2D.setPen(Qt::green);
+  j=0;
   for(i=0; i<ig; i++) {
     y = green[i];
     painter1.drawPoint(i,0);
diff --git a/soundin.cpp b/soundin.cpp
index 2019814a5..e9e5057a7 100644
--- a/soundin.cpp
+++ b/soundin.cpp
@@ -8,7 +8,11 @@ extern "C" {
 #include <portaudio.h>
 extern struct {
   short int d2[30*48000];             //This is "common/mscom/..." in fortran
+  float s1[215];
+  float s2[215];
   int kin;
+  int ndiskdat;
+  int kline;
 } mscom_;
 }
 
diff --git a/widegraph.ui b/widegraph.ui
index 92c6c1716..873c0faad 100644
--- a/widegraph.ui
+++ b/widegraph.ui
@@ -283,7 +283,7 @@
        <item>
         <widget class="QCheckBox" name="cbSpec2d">
          <property name="text">
-          <string>2D Spectrum</string>
+          <string>PSK Spectrum</string>
          </property>
         </widget>
        </item>