diff --git a/plugins/channelrx/demodatv/atvdemodgui.cpp b/plugins/channelrx/demodatv/atvdemodgui.cpp
index fc3dde666..5cd4ec56c 100644
--- a/plugins/channelrx/demodatv/atvdemodgui.cpp
+++ b/plugins/channelrx/demodatv/atvdemodgui.cpp
@@ -139,7 +139,7 @@ void ATVDemodGUI::displaySettings()
     ui->amScaleOffset->setValue(m_settings.m_amOffsetFactor);
     ui->amScaleOffsetText->setText(QString("%1").arg(m_settings.m_amOffsetFactor));
 
-    applyTVSampleRate();
+    applySampleRate();
 
     m_doApplySettings = true;
 }
@@ -165,18 +165,20 @@ void ATVDemodGUI::displayRFBandwidths()
     ui->rfOppBWText->setText(QString("%1k").arg((sliderPosition * m_rfSliderDivisor) / 1000.0, 0, 'f', 0));
 }
 
-void ATVDemodGUI::applyTVSampleRate()
+void ATVDemodGUI::applySampleRate()
 {
-    qDebug("TVDemodGUI::applyTVSampleRate");
+    qDebug("ATVDemodGUI::applySampleRate");
     unsigned int nbPointsPerLine;
     ATVDemodSettings::getBaseValues(m_basebandSampleRate, m_settings.m_fps*m_settings.m_nbLines, nbPointsPerLine);
+    float samplesPerLineFrac = (float) m_basebandSampleRate / (m_settings.m_nbLines * m_settings.m_fps) - nbPointsPerLine;
     ui->tvSampleRateText->setText(tr("%1k").arg(m_basebandSampleRate/1000.0f, 0, 'f', 2));
-    ui->nbPointsPerLineText->setText(tr("%1p").arg(nbPointsPerLine));
+    ui->nbPointsPerLineText->setText(tr("%1p+%2").arg(nbPointsPerLine).arg(samplesPerLineFrac, 0, 'f', 2));
     m_scopeVis->setLiveRate(m_basebandSampleRate);
     setRFFiltersSlidersRange(m_basebandSampleRate);
     displayRFBandwidths();
     lineTimeUpdate();
     topTimeUpdate();
+    setChannelMarkerBandwidth();
 }
 
 bool ATVDemodGUI::handleMessage(const Message& message)
@@ -185,7 +187,7 @@ bool ATVDemodGUI::handleMessage(const Message& message)
     {
         DSPSignalNotification& notif = (DSPSignalNotification&) message;
         m_basebandSampleRate = notif.getSampleRate();
-        applyTVSampleRate();
+        applySampleRate();
 
         return true;
     }
@@ -453,14 +455,14 @@ void ATVDemodGUI::on_halfImage_clicked()
 void ATVDemodGUI::on_nbLines_currentIndexChanged(int index)
 {
     m_settings.m_nbLines = ATVDemodSettings::getNumberOfLines(index);
-    applyTVSampleRate();
+    applySampleRate();
     applySettings();
 }
 
 void ATVDemodGUI::on_fps_currentIndexChanged(int index)
 {
     m_settings.m_fps = ATVDemodSettings::getFps(index);
-    applyTVSampleRate();
+    applySampleRate();
     applySettings();
 }
 
diff --git a/plugins/channelrx/demodatv/atvdemodgui.h b/plugins/channelrx/demodatv/atvdemodgui.h
index 763eb37e8..331bc721b 100644
--- a/plugins/channelrx/demodatv/atvdemodgui.h
+++ b/plugins/channelrx/demodatv/atvdemodgui.h
@@ -87,7 +87,7 @@ private:
     void displaySettings();
     void displayStreamIndex();
     void displayRFBandwidths();
-    void applyTVSampleRate();
+    void applySampleRate();
     void setChannelMarkerBandwidth();
     void setRFFiltersSlidersRange(int sampleRate);
     void lineTimeUpdate();
diff --git a/plugins/channelrx/demodatv/atvdemodgui.ui b/plugins/channelrx/demodatv/atvdemodgui.ui
index 628836dca..d1d12528c 100644
--- a/plugins/channelrx/demodatv/atvdemodgui.ui
+++ b/plugins/channelrx/demodatv/atvdemodgui.ui
@@ -137,15 +137,15 @@
        <widget class="QLabel" name="nbPointsPerLineText">
         <property name="minimumSize">
          <size>
-          <width>40</width>
+          <width>80</width>
           <height>0</height>
          </size>
         </property>
         <property name="toolTip">
-         <string>Number of points (samples) per line</string>
+         <string>Number of integer points (samples) per line plus fractional part</string>
         </property>
         <property name="text">
-         <string>000p</string>
+         <string>0000p+0.00</string>
         </property>
         <property name="alignment">
          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>