diff --git a/Software/PC_Application/Calibration/calkitdialog.ui b/Software/PC_Application/Calibration/calkitdialog.ui
index 4048d94..2f95442 100644
--- a/Software/PC_Application/Calibration/calkitdialog.ui
+++ b/Software/PC_Application/Calibration/calkitdialog.ui
@@ -933,10 +933,10 @@
   </connection>
  </connections>
  <buttongroups>
-  <buttongroup name="TRL_Rtype"/>
   <buttongroup name="LoadType"/>
-  <buttongroup name="ThroughType"/>
+  <buttongroup name="TRL_Rtype"/>
   <buttongroup name="ShortType"/>
   <buttongroup name="OpenType"/>
+  <buttongroup name="ThroughType"/>
  </buttongroups>
 </ui>
diff --git a/Software/PC_Application/LibreVNA-GUI.pro b/Software/PC_Application/LibreVNA-GUI.pro
index de8fd0c..f872b0c 100644
--- a/Software/PC_Application/LibreVNA-GUI.pro
+++ b/Software/PC_Application/LibreVNA-GUI.pro
@@ -79,6 +79,7 @@ HEADERS += \
     Traces/Math/parser/suStringTokens.h \
     Traces/Math/parser/utGeneric.h \
     Traces/Math/tdr.h \
+    Traces/Math/timegate.h \
     Traces/Math/tracemath.h \
     Traces/Math/windowfunction.h \
     Traces/fftcomplex.h \
@@ -190,6 +191,7 @@ SOURCES += \
     Traces/Math/parser/mpValueCache.cpp \
     Traces/Math/parser/mpVariable.cpp \
     Traces/Math/tdr.cpp \
+    Traces/Math/timegate.cpp \
     Traces/Math/tracemath.cpp \
     Traces/Math/windowfunction.cpp \
     Traces/fftcomplex.cpp \
@@ -260,6 +262,9 @@ FORMS += \
     Traces/Math/newtracemathdialog.ui \
     Traces/Math/tdrdialog.ui \
     Traces/Math/tdrexplanationwidget.ui \
+    Traces/Math/timedomaingatingexplanationwidget.ui \
+    Traces/Math/timegatedialog.ui \
+    Traces/Math/timegateexplanationwidget.ui \
     Traces/markerwidget.ui \
     Traces/smithchartdialog.ui \
     Traces/tracecsvexport.ui \
diff --git a/Software/PC_Application/Traces/Math/timedomaingatingexplanationwidget.ui b/Software/PC_Application/Traces/Math/timedomaingatingexplanationwidget.ui
new file mode 100644
index 0000000..bf6e88c
--- /dev/null
+++ b/Software/PC_Application/Traces/Math/timedomaingatingexplanationwidget.ui
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>TimeDomainGatingExplanationWidget</class>
+ <widget class="QWidget" name="TimeDomainGatingExplanationWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>364</width>
+    <height>412</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="widget">
+     <property name="text">
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Time Domain Gating&lt;/span&gt;&lt;/p&gt;&lt;p&gt;This is not a dedicated math operation but rather a convenience option to automatically setup a TDR with a time gate and followed by a DFT. The combination of these three operations performs time domain gating&lt;br/&gt;&lt;/p&gt;&lt;p&gt;&lt;br/&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/Software/PC_Application/Traces/Math/timegate.cpp b/Software/PC_Application/Traces/Math/timegate.cpp
new file mode 100644
index 0000000..8fd4974
--- /dev/null
+++ b/Software/PC_Application/Traces/Math/timegate.cpp
@@ -0,0 +1,404 @@
+#include "timegate.h"
+#include <QWidget>
+#include <QDialog>
+#include "ui_timegatedialog.h"
+#include "ui_timegateexplanationwidget.h"
+#include "preferences.h"
+#include <QPainter>
+#include "Util/util.h"
+#include "Traces/fftcomplex.h"
+#include "unit.h"
+#include <QMouseEvent>
+
+Math::TimeGate::TimeGate()
+{
+    bandpass = true;
+//    if(input->rData().size()) {
+//        center = input->rData().back().x/2;
+//        span = center / 2;
+//    } else {
+        center = 10e-9;
+        span = 2e-9;
+//    }
+    connect(&window, &WindowFunction::changed, this, &TimeGate::updateFilter);
+}
+
+TraceMath::DataType Math::TimeGate::outputType(TraceMath::DataType inputType)
+{
+    if(inputType == DataType::Time) {
+        return DataType::Time;
+    } else {
+        return DataType::Invalid;
+    }
+}
+
+QString Math::TimeGate::description()
+{
+    QString d = "Time gate (";
+    if(bandpass) {
+        d.append("bandpass");
+    } else {
+        d.append("notch");
+    }
+    d.append(") center: "+Unit::ToString(center, "s", "pnum ", 3)+", span: "+Unit::ToString(span, "s", "pnum ", 3));
+    d += ", window: " + window.getDescription();
+    return d;
+}
+
+void Math::TimeGate::edit()
+{
+    if(dataType == DataType::Invalid) {
+        return;
+    }
+
+    auto d = new QDialog();
+    auto ui = new Ui::TimeGateDialog();
+    ui->setupUi(d);
+    ui->graph->setGate(this);
+    ui->windowBox->setLayout(new QVBoxLayout);
+    ui->windowBox->layout()->addWidget(window.createEditor());
+
+    ui->start->setUnit("s");
+    ui->start->setPrefixes("pnum ");
+    ui->start->setValue(center - span / 2);
+
+    ui->stop->setUnit("s");
+    ui->stop->setPrefixes("pnum ");
+    ui->stop->setValue(center + span / 2);
+
+    ui->center->setUnit("s");
+    ui->center->setPrefixes("pnum ");
+    ui->center->setValue(center);
+
+    ui->span->setUnit("s");
+    ui->span->setPrefixes("pnum ");
+    ui->span->setValue(center);
+
+    if(bandpass) {
+        ui->type->setCurrentIndex(0);
+    } else {
+        ui->type->setCurrentIndex(1);
+    }
+
+    ui->graph->setFocus();
+
+    connect(ui->span, &SIUnitEdit::valueChanged, this, &TimeGate::setSpan);
+    connect(this, &TimeGate::spanChanged, ui->span, &SIUnitEdit::setValueQuiet);
+    connect(ui->center, &SIUnitEdit::valueChanged, this, &TimeGate::setCenter);
+    connect(this, &TimeGate::centerChanged, ui->center, &SIUnitEdit::setValueQuiet);
+    connect(ui->start, &SIUnitEdit::valueChanged, this, &TimeGate::setStart);
+    connect(this, &TimeGate::startChanged, ui->start, &SIUnitEdit::setValueQuiet);
+    connect(ui->stop, &SIUnitEdit::valueChanged, this, &TimeGate::setStop);
+    connect(this, &TimeGate::stopChanged, ui->stop, &SIUnitEdit::setValueQuiet);
+
+    connect(ui->type, qOverload<int>(&QComboBox::currentIndexChanged), [=](int index) {
+        bandpass = index == 0;
+        updateFilter();
+    });
+
+    connect(this, &TimeGate::outputSamplesChanged, ui->graph, qOverload<>(&QWidget::update));
+    connect(this, &TimeGate::filterUpdated, ui->graph, qOverload<>(&QWidget::update));
+
+    updateFilter();
+
+    d->show();
+}
+
+QWidget *Math::TimeGate::createExplanationWidget()
+{
+    auto w = new QWidget();
+    auto ui = new Ui::TimeGateExplanationWidget;
+    ui->setupUi(w);
+    return w;
+}
+
+nlohmann::json Math::TimeGate::toJSON()
+{
+    nlohmann::json j;
+    j["center"] = center;
+    j["span"] = span;
+    j["bandpass"] = bandpass;
+    j["window"] = window.toJSON();
+    return j;
+}
+
+void Math::TimeGate::fromJSON(nlohmann::json j)
+{
+    if(j.contains("window")) {
+        window.fromJSON(j["window"]);
+    }
+    bandpass = j.value("bandpass", true);
+    center = j.value("center", center);
+    span = j.value("span", span);
+    updateFilter();
+}
+
+void Math::TimeGate::setStart(double start)
+{
+    double stop = center + span / 2;
+    if(start < stop) {
+        span = stop - start;
+        center = (stop + start) / 2;
+        updateFilter();
+    }
+    emit centerChanged(center);
+    emit startChanged(center - span / 2);
+    emit spanChanged(span);
+}
+
+void Math::TimeGate::setStop(double stop)
+{
+    double start = center - span / 2;
+    if(stop > start) {
+        span = stop - start;
+        center = (start + stop) / 2;
+        updateFilter();
+    }
+    emit centerChanged(center);
+    emit stopChanged(center + span / 2);
+    emit spanChanged(span);
+}
+
+void Math::TimeGate::setCenter(double center)
+{
+    this->center = center;
+    updateFilter();
+    emit centerChanged(center);
+    emit startChanged(center - span / 2);
+    emit stopChanged(center + span / 2);
+}
+
+void Math::TimeGate::setSpan(double span)
+{
+    this->span = span;
+    updateFilter();
+    emit spanChanged(span);
+    emit startChanged(center - span / 2);
+    emit stopChanged(center + span / 2);
+}
+
+double Math::TimeGate::getStart()
+{
+    return center - span / 2;
+}
+
+double Math::TimeGate::getStop()
+{
+    return center + span / 2;
+}
+
+void Math::TimeGate::inputSamplesChanged(unsigned int begin, unsigned int end)
+{
+    if(data.size() != input->rData().size()) {
+        data.resize(input->rData().size());
+        updateFilter();
+    }
+    for(auto i = begin;i<end;i++) {
+        data[i] = input->rData()[i];
+        data[i].y *= filter[i];
+    }
+    emit outputSamplesChanged(begin, end);
+    success();
+}
+
+void Math::TimeGate::updateFilter()
+{
+    if(!input) {
+        return;
+    }
+    std::vector<std::complex<double>> buf;
+    filter.clear();
+    buf.resize(input->rData().size() * 2);
+    if(!buf.size()) {
+        return;
+    }
+    auto maxX = input->rData().back().x;
+    auto minX = input->rData().front().x;
+    if(center - span / 2 < minX) {
+        span = (center - minX) * 2;
+    }
+    if(center + span / 2 > maxX) {
+        span = (maxX - center) * 2;
+    }
+    auto wc1 = Util::Scale<double>(center - span / 2, minX, maxX, 0, 1);
+    auto wc2 = Util::Scale<double>(center + span / 2, minX, maxX, 0, 1);
+
+    // create ideal filter coefficients
+    for(unsigned int i=0;i<buf.size();i++) {
+        int n = i - buf.size() / 2;
+        if(n == 0) {
+            buf[i] = wc2 - wc1;
+        } else {
+            buf[i] = (sin(M_PI * wc2 * n) - sin(M_PI * wc1 * n)) / (n * M_PI);
+        }
+        if(!bandpass) {
+            if(n == 0) {
+                buf[i] = 1.0 - buf[i];
+            } else {
+                buf[i] = sin(M_PI * n) / M_PI - buf[i];
+            }
+        }
+    }
+
+    window.apply(buf);
+    Fft::shift(buf, true);
+    Fft::transform(buf, false);
+
+    filter.resize(buf.size());
+    for(unsigned int i=0;i<buf.size() / 2;i++) {
+        filter[i] = abs(buf[i]);
+    }
+    emit filterUpdated();
+
+    // needs to update output samples, pretend that input samples have changed
+    inputSamplesChanged(0, input->rData().size());
+}
+
+Math::TimeGateGraph::TimeGateGraph(QWidget *parent)
+    : QWidget(parent)
+{
+    gate = nullptr;
+    grabbedStop = false;
+    grabbedStart = false;
+    setMouseTracking(true);
+}
+
+QPoint Math::TimeGateGraph::plotValueToPixel(double x, double y)
+{
+    auto input = gate->getInput()->rData();
+    auto minX = input.front().x;
+    auto maxX = input.back().x;
+
+    int plotLeft = 0;
+    int plotRight = size().width();
+    int plotTop = 0;
+    int plotBottom = size().height();
+
+    QPoint p;
+    p.setX(Util::Scale<double>(x, minX, maxX, plotLeft, plotRight));
+    p.setY(Util::Scale<double>(y, -120, 20, plotBottom, plotTop));
+    return p;
+}
+
+QPointF Math::TimeGateGraph::pixelToPlotValue(QPoint p)
+{
+    auto input = gate->getInput()->rData();
+    auto minX = input.front().x;
+    auto maxX = input.back().x;
+
+    int plotLeft = 0;
+    int plotRight = size().width();
+    int plotTop = 0;
+    int plotBottom = size().height();
+
+    QPointF ret;
+    ret.setX(Util::Scale<double>(p.x(), plotLeft, plotRight, minX, maxX));
+    ret.setY(Util::Scale<double>(p.y(), plotBottom, plotTop, -120, 20));
+    return ret;
+}
+
+void Math::TimeGateGraph::paintEvent(QPaintEvent *event)
+{
+    if(!gate) {
+        return;
+    }
+    // grab input data
+    auto input = gate->getInput()->rData();
+
+    Q_UNUSED(event)
+    auto pref = Preferences::getInstance();
+    QPainter p(this);
+    // fill background
+    p.setBackground(QBrush(pref.General.graphColors.background));
+    p.fillRect(0, 0, width(), height(), QBrush(pref.General.graphColors.background));
+
+    // plot trace
+    auto pen = QPen(Qt::green, 1);
+    pen.setCosmetic(true);
+    pen.setStyle(Qt::SolidLine);
+    p.setPen(pen);
+    for(unsigned int i=1;i<input.size();i++) {
+        auto last = input[i-1];
+        auto now = input[i];
+
+        auto y_last = 20*log10(abs(last.y));
+        auto y_now = 20*log10(abs(now.y));
+
+        if(std::isnan(y_last) || std::isnan(y_now) || std::isinf(y_last) || std::isinf(y_now)) {
+            continue;
+        }
+
+        // scale to plot coordinates
+        auto p1 = plotValueToPixel(last.x, y_last);
+        auto p2 = plotValueToPixel(now.x, y_now);
+        // draw line
+        p.drawLine(p1, p2);
+    }
+    // plot filter shape
+    auto filter = gate->rFilter();
+    pen = QPen(Qt::red, 1);
+    p.setPen(pen);
+    for(unsigned int i=1;i<filter.size();i++) {
+        auto x_last = input[i-1].x;
+        auto x_now = input[i].x;
+
+        auto f_last = 20*log10(filter[i-1]);
+        auto f_now = 20*log10(filter[i]);
+
+        if(std::isnan(f_last) || std::isnan(f_now) || std::isinf(f_last) || std::isinf(f_now)) {
+            continue;
+        }
+
+        // scale to plot coordinates
+        auto p1 = plotValueToPixel(x_last, f_last);
+        auto p2 = plotValueToPixel(x_now, f_now);
+
+        // draw line
+        p.drawLine(p1, p2);
+    }
+}
+
+void Math::TimeGateGraph::mousePressEvent(QMouseEvent *event)
+{
+    if(!gate) {
+        return;
+    }
+    grabbedStop = false;
+    grabbedStart = false;
+    auto startX = plotValueToPixel(gate->getStart(), 0).x();
+    auto stopX = plotValueToPixel(gate->getStop(), 0).x();
+    if(abs(event->pos().x() - startX) < catchDistance) {
+        grabbedStart = true;
+    } else if(abs(event->pos().x() - stopX) < catchDistance) {
+        grabbedStop = true;
+    }
+}
+
+void Math::TimeGateGraph::mouseReleaseEvent(QMouseEvent *event)
+{
+    Q_UNUSED(event);
+    grabbedStop = false;
+    grabbedStart = false;
+}
+
+void Math::TimeGateGraph::mouseMoveEvent(QMouseEvent *event)
+{
+    if(!gate) {
+        return;
+    }
+    auto value = pixelToPlotValue(event->pos());
+    if(grabbedStop) {
+        gate->setStop(value.x());
+    } else if(grabbedStart) {
+        gate->setStart(value.x());
+    } else {
+        // nothing grabbed but might be above start/stop -> check and change cursor
+        auto startX = plotValueToPixel(gate->getStart(), 0).x();
+        auto stopX = plotValueToPixel(gate->getStop(), 0).x();
+        if(abs(event->pos().x() - startX) < catchDistance || abs(event->pos().x() - stopX) < catchDistance) {
+            setCursor(Qt::SizeHorCursor);
+        } else {
+            setCursor(Qt::ArrowCursor);
+        }
+    }
+}
diff --git a/Software/PC_Application/Traces/Math/timegate.h b/Software/PC_Application/Traces/Math/timegate.h
new file mode 100644
index 0000000..41c2fa4
--- /dev/null
+++ b/Software/PC_Application/Traces/Math/timegate.h
@@ -0,0 +1,86 @@
+#ifndef TIMEGATE_H
+#define TIMEGATE_H
+
+#include "tracemath.h"
+#include "windowfunction.h"
+
+namespace Math {
+
+class TimeGate;
+
+class TimeGateGraph : public QWidget {
+public:
+    TimeGateGraph(QWidget *parent);
+
+    void setGate(TimeGate *gate) {
+        this->gate = gate;
+    }
+private:
+    static constexpr int catchDistance = 5;
+
+    QPoint plotValueToPixel(double x, double y);
+    QPointF pixelToPlotValue(QPoint p);
+    void paintEvent(QPaintEvent *event) override;
+    void mousePressEvent(QMouseEvent *event) override;
+    void mouseReleaseEvent(QMouseEvent *event) override;
+    void mouseMoveEvent(QMouseEvent *event) override;
+    TimeGate *gate;
+    bool grabbedStart;
+    bool grabbedStop;
+};
+
+class TimeGate : public TraceMath
+{
+    Q_OBJECT
+public:
+    TimeGate();
+
+    virtual DataType outputType(DataType inputType) override;
+    virtual QString description() override;
+
+    virtual void edit() override;
+
+    static QWidget *createExplanationWidget();
+
+    virtual nlohmann::json toJSON() override;
+    virtual void fromJSON(nlohmann::json j) override;
+    Type getType() override {return Type::TimeGate;};
+
+    const std::vector<double> &rFilter() { return filter;};
+
+    double getStart();
+    double getStop();
+
+public slots:
+    // a single value of the input data has changed, index determines which sample has changed
+    virtual void inputSamplesChanged(unsigned int begin, unsigned int end) override;
+
+    void setStart(double start);
+    void setStop(double stop);
+    void setCenter(double center);
+    void setSpan(double span);
+
+private slots:
+    void updateFilter();
+signals:
+    void filterUpdated();
+    void startChanged(double newval);
+    void stopChanged(double newval);
+    void centerChanged(double newval);
+    void spanChanged(double newval);
+private:
+    enum class Filter {
+        None,
+        Hamming,
+        Hann
+    };
+
+    bool bandpass;
+    double center, span;
+    WindowFunction window;
+    std::vector<double> filter;
+};
+
+}
+
+#endif // TIMEGATE_H
diff --git a/Software/PC_Application/Traces/Math/timegatedialog.ui b/Software/PC_Application/Traces/Math/timegatedialog.ui
new file mode 100644
index 0000000..796ca17
--- /dev/null
+++ b/Software/PC_Application/Traces/Math/timegatedialog.ui
@@ -0,0 +1,163 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>TimeGateDialog</class>
+ <widget class="QDialog" name="TimeGateDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>973</width>
+    <height>317</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Time Gate</string>
+  </property>
+  <property name="modal">
+   <bool>true</bool>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout" stretch="0,1">
+     <item>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <item>
+        <layout class="QFormLayout" name="formLayout">
+         <item row="0" column="0">
+          <widget class="QLabel" name="label">
+           <property name="text">
+            <string>Start:</string>
+           </property>
+          </widget>
+         </item>
+         <item row="0" column="1">
+          <widget class="SIUnitEdit" name="start"/>
+         </item>
+         <item row="1" column="0">
+          <widget class="QLabel" name="label_2">
+           <property name="text">
+            <string>Stop:</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="1">
+          <widget class="SIUnitEdit" name="stop"/>
+         </item>
+         <item row="2" column="0">
+          <widget class="QLabel" name="label_3">
+           <property name="text">
+            <string>Center:</string>
+           </property>
+          </widget>
+         </item>
+         <item row="2" column="1">
+          <widget class="SIUnitEdit" name="center"/>
+         </item>
+         <item row="3" column="0">
+          <widget class="QLabel" name="label_4">
+           <property name="text">
+            <string>Span:</string>
+           </property>
+          </widget>
+         </item>
+         <item row="3" column="1">
+          <widget class="SIUnitEdit" name="span"/>
+         </item>
+         <item row="4" column="0">
+          <widget class="QLabel" name="label_5">
+           <property name="text">
+            <string>Type:</string>
+           </property>
+          </widget>
+         </item>
+         <item row="4" column="1">
+          <widget class="QComboBox" name="type">
+           <item>
+            <property name="text">
+             <string>Bandpass</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>Notch</string>
+            </property>
+           </item>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <widget class="QGroupBox" name="windowBox">
+         <property name="title">
+          <string>Shapewindow:</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <widget class="Math::TimeGateGraph" name="graph" native="true"/>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>SIUnitEdit</class>
+   <extends>QLineEdit</extends>
+   <header>CustomWidgets/siunitedit.h</header>
+  </customwidget>
+  <customwidget>
+   <class>Math::TimeGateGraph</class>
+   <extends>QWidget</extends>
+   <header>Traces/Math/timegate.h</header>
+   <container>1</container>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>TimeGateDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>TimeGateDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/Software/PC_Application/Traces/Math/timegateexplanationwidget.ui b/Software/PC_Application/Traces/Math/timegateexplanationwidget.ui
new file mode 100644
index 0000000..323e013
--- /dev/null
+++ b/Software/PC_Application/Traces/Math/timegateexplanationwidget.ui
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>TimeGateExplanationWidget</class>
+ <widget class="QWidget" name="TimeGateExplanationWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>364</width>
+    <height>412</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="widget">
+     <property name="text">
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Time Gate&lt;/span&gt;&lt;/p&gt;&lt;p&gt;A bandpass or notch filter in the time domain. Depending on the setup, this operation can isolate or remove a response at a certain distance in time.&lt;br/&gt;&lt;/p&gt;&lt;p&gt;&lt;br/&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/Software/PC_Application/Traces/Math/tracemath.cpp b/Software/PC_Application/Traces/Math/tracemath.cpp
index fce714a..44a6192 100644
--- a/Software/PC_Application/Traces/Math/tracemath.cpp
+++ b/Software/PC_Application/Traces/Math/tracemath.cpp
@@ -4,7 +4,9 @@
 #include "tdr.h"
 #include "dft.h"
 #include "expression.h"
+#include "timegate.h"
 #include "Traces/trace.h"
+#include "ui_timedomaingatingexplanationwidget.h"
 
 TraceMath::TraceMath()
 {
@@ -13,20 +15,34 @@ TraceMath::TraceMath()
     error("Invalid input");
 }
 
-TraceMath *TraceMath::createMath(TraceMath::Type type)
+std::vector<TraceMath *> TraceMath::createMath(TraceMath::Type type)
 {
+    std::vector<TraceMath*> ret;
     switch(type) {
     case Type::MedianFilter:
-        return new Math::MedianFilter();
+        ret.push_back(new Math::MedianFilter());
+        break;
     case Type::TDR:
-        return new Math::TDR();
+        ret.push_back(new Math::TDR());
+        break;
     case Type::DFT:
-        return new Math::DFT();
+        ret.push_back(new Math::DFT());
+        break;
     case Type::Expression:
-        return new Math::Expression();
+        ret.push_back(new Math::Expression());
+        break;
+    case Type::TimeGate:
+        ret.push_back(new Math::TimeGate());
+        break;
+    case Type::TimeDomainGating:
+        ret.push_back(new Math::TDR());
+        ret.push_back(new Math::TimeGate());
+        ret.push_back(new Math::DFT());
+        break;
     default:
-        return nullptr;
+        break;
     }
+    return ret;
 }
 
 TraceMath::TypeInfo TraceMath::getInfo(TraceMath::Type type)
@@ -49,6 +65,17 @@ TraceMath::TypeInfo TraceMath::getInfo(TraceMath::Type type)
         ret.name = "Custom Expression";
         ret.explanationWidget = Math::Expression::createExplanationWidget();
         break;
+    case Type::TimeGate:
+        ret.name = "Time Gate";
+        ret.explanationWidget = Math::TimeGate::createExplanationWidget();
+        break;
+    case Type::TimeDomainGating: {
+        ret.name = "Time Domain Gating";
+        ret.explanationWidget = new QWidget();
+        auto ui = new Ui::TimeDomainGatingExplanationWidget;
+        ui->setupUi(ret.explanationWidget);
+    }
+        break;
     default:
         break;
     }
diff --git a/Software/PC_Application/Traces/Math/tracemath.h b/Software/PC_Application/Traces/Math/tracemath.h
index ff29cbb..ecb6015 100644
--- a/Software/PC_Application/Traces/Math/tracemath.h
+++ b/Software/PC_Application/Traces/Math/tracemath.h
@@ -74,11 +74,13 @@ public:
         TDR,
         DFT,
         Expression,
+        TimeGate,
+        TimeDomainGating,
         // Add new math operations here, do not explicitly assign values and keep the Last entry at the last position
         Last,
     };
 
-    static TraceMath *createMath(Type type);
+    static std::vector<TraceMath*> createMath(Type type);
     class TypeInfo {
     public:
         QString name;
diff --git a/Software/PC_Application/Traces/trace.cpp b/Software/PC_Application/Traces/trace.cpp
index 0f55b9d..751bba0 100644
--- a/Software/PC_Application/Traces/trace.cpp
+++ b/Software/PC_Application/Traces/trace.cpp
@@ -396,7 +396,7 @@ void Trace::fromJSON(nlohmann::json j)
             continue;
         }
         qDebug() << "Creating math operation of type:" << operation;
-        auto op = TraceMath::createMath(type);
+        auto op = TraceMath::createMath(type)[0];
         if(jm.contains("settings")) {
             op->fromJSON(jm["settings"]);
         }
@@ -731,6 +731,18 @@ void Trace::addMathOperation(TraceMath *math)
     updateLastMath(mathOps.rbegin());
 }
 
+void Trace::addMathOperations(std::vector<TraceMath *> maths)
+{
+    TraceMath *input = lastMath;
+    for(auto m : maths) {
+        MathInfo info = {.math = m, .enabled = true};
+        m->assignInput(input);
+        input = m;
+        mathOps.push_back(info);
+    }
+    updateLastMath(mathOps.rbegin());
+}
+
 void Trace::removeMathOperation(unsigned int index)
 {
     if(index < 1 || index >= mathOps.size()) {
diff --git a/Software/PC_Application/Traces/trace.h b/Software/PC_Application/Traces/trace.h
index 8f51b31..b2d197a 100644
--- a/Software/PC_Application/Traces/trace.h
+++ b/Software/PC_Application/Traces/trace.h
@@ -99,7 +99,8 @@ public:
     bool hasMathOperations(); // check if math operations are set up (not necessarily enabled)
     void enableMath(bool enable);
     // Adds a new math operation at the end of the list and enables it
-    void addMathOperation(TraceMath *mathOps);
+    void addMathOperation(TraceMath *math);
+    void addMathOperations(std::vector<TraceMath*> maths);
     // removes the math operation at the given index. Index 0 is invalid as this would be the trace itself
     void removeMathOperation(unsigned int index);
     // swaps the order of math operations at index and index+1. Does nothing if either index is invalid
diff --git a/Software/PC_Application/Traces/traceeditdialog.cpp b/Software/PC_Application/Traces/traceeditdialog.cpp
index a535794..8010880 100644
--- a/Software/PC_Application/Traces/traceeditdialog.cpp
+++ b/Software/PC_Application/Traces/traceeditdialog.cpp
@@ -141,10 +141,23 @@ TraceEditDialog::TraceEditDialog(Trace &t, QWidget *parent) :
 
         connect(ui->list, &QListWidget::doubleClicked, ui->buttonBox, &QDialogButtonBox::accepted);
         connect(ui->buttonBox, &QDialogButtonBox::accepted, [=](){
-           auto newMath = TraceMath::createMath(static_cast<TraceMath::Type>(ui->list->currentRow()));
-           if(newMath) {
-               model->addOperation(newMath);
-           }
+            auto type = static_cast<TraceMath::Type>(ui->list->currentRow());
+            auto newMath = TraceMath::createMath(type);
+            model->addOperations(newMath);
+            if(newMath.size() == 1) {
+               // any normal math operation added, edit now
+               newMath[0]->edit();
+            } else {
+               // composite operation added, check which one and edit the correct suboperation
+               switch(type) {
+               case TraceMath::Type::TimeDomainGating:
+                   // TDR/DFT can be left at default, edit the actual gate
+                   newMath[1]->edit();
+                   break;
+               default:
+                   break;
+               }
+            }
         });
         ui->list->setCurrentRow(0);
         ui->stack->setCurrentIndex(0);
@@ -305,8 +318,13 @@ void MathModel::addOperation(TraceMath *math)
     beginInsertRows(QModelIndex(), t.getMathOperations().size(), t.getMathOperations().size());
     t.addMathOperation(math);
     endInsertRows();
-    // open the editor for the newly added operation
-    math->edit();
+}
+
+void MathModel::addOperations(std::vector<TraceMath *> maths)
+{
+    beginInsertRows(QModelIndex(), t.getMathOperations().size(), t.getMathOperations().size() + maths.size() - 1);
+    t.addMathOperations(maths);
+    endInsertRows();
 }
 
 void MathModel::deleteRow(unsigned int row)
diff --git a/Software/PC_Application/Traces/traceeditdialog.h b/Software/PC_Application/Traces/traceeditdialog.h
index a4a794b..a590548 100644
--- a/Software/PC_Application/Traces/traceeditdialog.h
+++ b/Software/PC_Application/Traces/traceeditdialog.h
@@ -29,6 +29,7 @@ public:
     Qt::ItemFlags flags(const QModelIndex &index) const override;
 
     void addOperation(TraceMath *math);
+    void addOperations(std::vector<TraceMath*> maths);
     void deleteRow(unsigned int row);
 
 private:
diff --git a/Software/PC_Application/Traces/tracemarker.cpp b/Software/PC_Application/Traces/tracemarker.cpp
index 12e807b..39fbbac 100644
--- a/Software/PC_Application/Traces/tracemarker.cpp
+++ b/Software/PC_Application/Traces/tracemarker.cpp
@@ -7,6 +7,8 @@
 #include <QDebug>
 #include "tracemarkermodel.h"
 #include "unit.h"
+#include <QMenu>
+#include <QActionGroup>
 
 using namespace std;
 
@@ -19,13 +21,16 @@ TraceMarker::TraceMarker(TraceMarkerModel *model, int number, TraceMarker *paren
       data(0),
       type(Type::Manual),
       description(descr),
+      contextmenu(nullptr),
       delta(nullptr),
       parent(parent),
       cutoffAmplitude(-3.0),
       peakThreshold(-40.0),
       offset(10000)
 {
-
+    connect(this, &TraceMarker::traceChanged, this, &TraceMarker::updateContextmenu);
+    connect(this, &TraceMarker::typeChanged, this, &TraceMarker::updateContextmenu);
+    updateContextmenu();
 }
 
 TraceMarker::~TraceMarker()
@@ -363,6 +368,29 @@ void TraceMarker::deltaDeleted()
     update();
 }
 
+void TraceMarker::updateContextmenu()
+{
+    if(contextmenu) {
+        delete contextmenu;
+    }
+    contextmenu = new QMenu();
+    auto typemenu = new QMenu("Type");
+    auto typegroup = new QActionGroup(contextmenu);
+    for(auto t : getSupportedTypes()) {
+        auto setTypeAction = new QAction(typeToString(t));
+        setTypeAction->setCheckable(true);
+        if(t == type) {
+            setTypeAction->setChecked(true);
+        }
+        connect(setTypeAction, &QAction::triggered, [=](){
+            setType(t);
+        });
+        typegroup->addAction(setTypeAction);
+        typemenu->addAction(setTypeAction);
+    }
+    contextmenu->addMenu(typemenu);
+}
+
 std::set<TraceMarker::Type> TraceMarker::getSupportedTypes()
 {
     set<TraceMarker::Type> supported;
diff --git a/Software/PC_Application/Traces/tracemarker.h b/Software/PC_Application/Traces/tracemarker.h
index 5d9700d..8f2fbe0 100644
--- a/Software/PC_Application/Traces/tracemarker.h
+++ b/Software/PC_Application/Traces/tracemarker.h
@@ -57,6 +57,8 @@ public:
     SIUnitEdit* getSettingsEditor();
     void adjustSettings(double value);
 
+    QMenu *getContextMenu() { return contextmenu;}
+
     // Updates marker position and data on automatic markers. Should be called whenever the tracedata is complete
     void update();
     TraceMarker *getParent() const;
@@ -93,6 +95,7 @@ private slots:
     void updateSymbol();
     void checkDeltaMarker();
     void deltaDeleted();
+    void updateContextmenu();
 signals:
     void rawDataChanged();
     void domainChanged();
@@ -133,6 +136,8 @@ private:
     QString suffix;
     QString description;
 
+    QMenu *contextmenu;
+
     TraceMarker *delta;
     std::vector<TraceMarker*> helperMarkers;
     TraceMarker *parent;
diff --git a/Software/PC_Application/Traces/traceplot.cpp b/Software/PC_Application/Traces/traceplot.cpp
index 08dd6b8..34aca49 100644
--- a/Software/PC_Application/Traces/traceplot.cpp
+++ b/Software/PC_Application/Traces/traceplot.cpp
@@ -92,7 +92,16 @@ void TracePlot::initializeTraceInfo()
 
 void TracePlot::contextMenuEvent(QContextMenuEvent *event)
 {
-    contextmenu->exec(event->globalPos());
+    auto m = markerAtPosition(event->pos());
+    QMenu *menu;
+    if(m) {
+        // right click on marker, execute its contextmenu
+        menu = m->getContextMenu();
+    } else {
+        // no marker, contextmenu of graph
+        menu = contextmenu;
+    }
+    menu->exec(event->globalPos());
     if(markedForDeletion) {
         emit deleted(this);
         delete this;
@@ -138,38 +147,7 @@ void TracePlot::paintEvent(QPaintEvent *event)
 
 void TracePlot::mousePressEvent(QMouseEvent *event)
 {
-    auto clickPoint = event->pos() - QPoint(marginLeft, marginTop);
-    // check if click was near a marker
-    unsigned int closestDistance = numeric_limits<unsigned int>::max();
-    TraceMarker *closestMarker = nullptr;
-    for(auto t : traces) {
-        if(!t.second) {
-            // this trace is disabled, skip
-            continue;
-        }
-        auto markers = t.first->getMarkers();
-        for(auto m : markers) {
-            if(!m->isMovable()) {
-                continue;
-            }
-            auto markerPoint = markerToPixel(m);
-            if(markerPoint.isNull()) {
-                // invalid, skip
-                continue;
-            }
-            auto diff = markerPoint - clickPoint;
-            unsigned int distance = diff.x() * diff.x() + diff.y() * diff.y();
-            if(distance < closestDistance) {
-                closestDistance = distance;
-                closestMarker = m;
-            }
-        }
-    }
-    if(closestDistance <= 400) {
-        selectedMarker = closestMarker;
-    } else {
-        selectedMarker = nullptr;
-    }
+    selectedMarker = markerAtPosition(event->pos(), true);
 }
 
 void TracePlot::mouseReleaseEvent(QMouseEvent *event)
@@ -205,6 +183,46 @@ void TracePlot::leaveEvent(QEvent *event)
     selectedMarker = nullptr;
 }
 
+TraceMarker *TracePlot::markerAtPosition(QPoint p, bool onlyMovable)
+{
+    auto clickPoint = p - QPoint(marginLeft, marginTop);
+    // check if click was near a marker
+    unsigned int closestDistance = numeric_limits<unsigned int>::max();
+    TraceMarker *closestMarker = nullptr;
+    for(auto t : traces) {
+        if(!t.second) {
+            // this trace is disabled, skip
+            continue;
+        }
+        auto markers = t.first->getMarkers();
+        for(auto m : markers) {
+            if(!m->isMovable() && onlyMovable) {
+                continue;
+            }
+            auto markerPoint = markerToPixel(m);
+            if(markerPoint.isNull()) {
+                // invalid, skip
+                continue;
+            }
+            auto diff = markerPoint - clickPoint;
+            unsigned int distance = diff.x() * diff.x() + diff.y() * diff.y();
+            if(distance < closestDistance) {
+                closestDistance = distance;
+                if(m->getParent()) {
+                    closestMarker = m->getParent();
+                } else {
+                    closestMarker = m;
+                }
+            }
+        }
+    }
+    if(closestDistance <= 400) {
+        return closestMarker;
+    } else {
+        return nullptr;
+    }
+}
+
 void TracePlot::dragEnterEvent(QDragEnterEvent *event)
 {
     if (event->mimeData()->hasFormat("trace/pointer")) {
diff --git a/Software/PC_Application/Traces/traceplot.h b/Software/PC_Application/Traces/traceplot.h
index 28790e5..afdb63a 100644
--- a/Software/PC_Application/Traces/traceplot.h
+++ b/Software/PC_Application/Traces/traceplot.h
@@ -55,6 +55,8 @@ protected:
     void mouseMoveEvent(QMouseEvent *event) override;
     void leaveEvent(QEvent *event) override;
 
+    TraceMarker *markerAtPosition(QPoint p, bool onlyMovable = false);
+
     // handle trace drops
     virtual bool dropSupported(Trace *t) = 0;
     void dragEnterEvent(QDragEnterEvent *event) override;
diff --git a/Software/PC_Application/Traces/tracexyplot.cpp b/Software/PC_Application/Traces/tracexyplot.cpp
index 9c8dd71..b23f0d9 100644
--- a/Software/PC_Application/Traces/tracexyplot.cpp
+++ b/Software/PC_Application/Traces/tracexyplot.cpp
@@ -859,7 +859,7 @@ QPointF TraceXYPlot::traceToCoordinate(Trace *t, unsigned int sample, TraceXYPlo
         ret.setY(real(data.y));
         break;
     case YAxisType::ImpulseMag:
-        ret.setY(abs(data.y));
+        ret.setY(20*log10(abs(data.y)));
         break;
     case YAxisType::Step:
         ret.setY(t->sample(sample, Trace::SampleType::TimeStep).y.real());
@@ -945,7 +945,7 @@ void TraceXYPlot::traceDropped(Trace *t, QPoint position)
         InformationBox::ShowMessage("X Axis Domain Change", "You dropped a time domain trace but the graph is still set up for the frequency domain."
                                     " All current traces will be removed and the graph changed to time domain.");
         setXAxis(XAxisType::Time, XAxisMode::FitTraces, 0, 1, 0.1);
-        setYAxis(0, YAxisType::ImpulseReal, false, true, 0, 1, 1.0);
+        setYAxis(0, YAxisType::ImpulseMag, false, true, 0, 1, 1.0);
         setYAxis(1, YAxisType::Disabled, false, true, 0, 1, 1.0);
     }
 
@@ -1002,7 +1002,7 @@ QString TraceXYPlot::AxisUnit(TraceXYPlot::YAxisType type)
     case TraceXYPlot::YAxisType::Phase: return "°"; break;
     case TraceXYPlot::YAxisType::VSWR: return ""; break;
     case TraceXYPlot::YAxisType::ImpulseReal: return ""; break;
-    case TraceXYPlot::YAxisType::ImpulseMag: return ""; break;
+    case TraceXYPlot::YAxisType::ImpulseMag: return "db"; break;
     case TraceXYPlot::YAxisType::Step: return ""; break;
     case TraceXYPlot::YAxisType::Impedance: return "Ohm"; break;
     default: return ""; break;