diff --git a/mainwindow.cpp b/mainwindow.cpp
index 5b983d6..723a74e 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -44,6 +44,7 @@ MainWindow::MainWindow()
     connect(dock->powerMinSlider, SIGNAL(valueChanged(int)), plots, SLOT(setPowerMin(int)));
     connect(dock->cursorsCheckBox, &QCheckBox::stateChanged, plots, &PlotView::enableCursors);
     connect(dock->cursorSymbolsSpinBox, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), plots, &PlotView::setCursorSegments);
+    connect(dock->timeScaleCheckBox, SIGNAL(stateChanged(int)), plots, SLOT(setTimeScaleEnable(int)));
 
     // Connect dock outputs
     connect(plots, SIGNAL(timeSelectionChanged(float)), dock, SLOT(timeSelectionChanged(float)));
diff --git a/plotview.cpp b/plotview.cpp
index 05171cf..013255e 100644
--- a/plotview.cpp
+++ b/plotview.cpp
@@ -339,3 +339,9 @@ void PlotView::setSampleRate(off_t rate)
     spectrogramPlot->setSampleRate(rate);
 }
 
+void PlotView::setTimeScaleEnable(int state)
+{
+    bool timeScaleIsEnabled = (state == Qt::Checked);
+    spectrogramPlot->setTimeScaleEnable(timeScaleIsEnabled);
+}
+
diff --git a/plotview.h b/plotview.h
index 783a826..094ec09 100644
--- a/plotview.h
+++ b/plotview.h
@@ -51,6 +51,7 @@ public slots:
     void setFFTAndZoom(int fftSize, int zoomLevel);
     void setPowerMin(int power);
     void setPowerMax(int power);
+    void setTimeScaleEnable(int state);
 
 protected:
     void contextMenuEvent(QContextMenuEvent * event) override;
diff --git a/spectrogramcontrols.cpp b/spectrogramcontrols.cpp
index 2b728e4..9f31d40 100644
--- a/spectrogramcontrols.cpp
+++ b/spectrogramcontrols.cpp
@@ -57,6 +57,10 @@ SpectrogramControls::SpectrogramControls(const QString & title, QWidget * parent
     powerMinSlider->setRange(-140, 10);
     layout->addRow(new QLabel(tr("Power min:")), powerMinSlider);
 
+    timeScaleCheckBox = new QCheckBox(widget);
+    timeScaleCheckBox->setCheckState(Qt::Checked);
+    layout->addRow(new QLabel(tr("Time overlay:")), timeScaleCheckBox);
+
     // Time selection settings
     layout->addRow(new QLabel()); // TODO: find a better way to add an empty row?
     layout->addRow(new QLabel(tr("<b>Time selection</b>")));
diff --git a/spectrogramcontrols.h b/spectrogramcontrols.h
index cdf8744..3b3bfee 100644
--- a/spectrogramcontrols.h
+++ b/spectrogramcontrols.h
@@ -68,4 +68,5 @@ public:
     QLabel *periodLabel;
     QLabel *symbolRateLabel;
     QLabel *symbolPeriodLabel;
+    QCheckBox *timeScaleCheckBox;
 };
diff --git a/spectrogramplot.cpp b/spectrogramplot.cpp
index ee71c23..8af44c5 100644
--- a/spectrogramplot.cpp
+++ b/spectrogramplot.cpp
@@ -37,6 +37,7 @@ SpectrogramPlot::SpectrogramPlot(std::shared_ptr<SampleSource<std::complex<float
     zoomLevel = 0;
     powerMax = 0.0f;
     powerMin = -50.0f;
+    timeScaleIsEnabled = true;
 
     for (int i = 0; i < 256; i++) {
         float p = (float)i / 256;
@@ -53,6 +54,12 @@ void SpectrogramPlot::paintFront(QPainter &painter, QRect &rect, range_t<off_t>
     if (tunerEnabled())
         tuner.paintFront(painter, rect, sampleRange);
 
+    if (timeScaleIsEnabled)
+        paintTimeScale(painter, rect, sampleRange);
+}
+
+void SpectrogramPlot::paintTimeScale(QPainter &painter, QRect &rect, range_t<off_t> sampleRange)
+{
     float startTime = (float)sampleRange.minimum / sampleRate;
     float stopTime = (float)sampleRange.maximum / sampleRate;
     float duration = stopTime - startTime;
@@ -293,3 +300,8 @@ void SpectrogramPlot::setSampleRate(off_t rate)
     emit repaint();
 }
 
+void SpectrogramPlot::setTimeScaleEnable(bool enabled)
+{
+    timeScaleIsEnabled = enabled;
+    emit repaint();
+}
diff --git a/spectrogramplot.h b/spectrogramplot.h
index 52a56f6..a620618 100644
--- a/spectrogramplot.h
+++ b/spectrogramplot.h
@@ -43,6 +43,7 @@ public:
     void paintMid(QPainter &painter, QRect &rect, range_t<off_t> sampleRange) override;
     bool mouseEvent(QEvent::Type type, QMouseEvent event) override;
     void setSampleRate(off_t rate);
+    void setTimeScaleEnable(bool enabled);
 
 public slots:
     void setFFTSize(int size);
@@ -67,6 +68,7 @@ private:
     float powerMax;
     float powerMin;
     off_t sampleRate = 0;
+    bool timeScaleIsEnabled;
 
     Tuner tuner;
     std::shared_ptr<TunerTransform> tunerTransform;
@@ -79,6 +81,7 @@ private:
     std::vector<float> getTunerTaps();
     int linesPerTile();
     bool tunerEnabled();
+    void paintTimeScale(QPainter &painter, QRect &rect, range_t<off_t> sampleRange);
 };
 
 class TileCacheKey