diff --git a/plugins/channelrx/localsink/localsink.cpp b/plugins/channelrx/localsink/localsink.cpp
index b0e7d3684..ef2f54eeb 100644
--- a/plugins/channelrx/localsink/localsink.cpp
+++ b/plugins/channelrx/localsink/localsink.cpp
@@ -54,6 +54,7 @@ LocalSink::LocalSink(DeviceAPI *deviceAPI) :
         m_thread(nullptr),
         m_basebandSink(nullptr),
         m_running(false),
+        m_spectrumVis(SDR_RX_SCALEF),
         m_centerFrequency(0),
         m_frequencyOffset(0),
         m_basebandSampleRate(48000)
@@ -147,6 +148,7 @@ void LocalSink::startProcessing()
 	qDebug("LocalSink::startProcessing");
     m_thread = new QThread(this);
     m_basebandSink = new LocalSinkBaseband();
+    m_basebandSink->setSpectrumSink(&m_spectrumVis);
     m_basebandSink->moveToThread(m_thread);
 
     QObject::connect(m_thread, &QThread::finished, m_basebandSink, &QObject::deleteLater);
@@ -163,6 +165,12 @@ void LocalSink::startProcessing()
     LocalSinkBaseband::MsgConfigureLocalSinkBaseband *msgConfig = LocalSinkBaseband::MsgConfigureLocalSinkBaseband::create(m_settings, true);
     m_basebandSink->getInputMessageQueue()->push(msgConfig);
 
+    LocalSinkBaseband::MsgSetSpectrumSampleRateAndFrequency *msgSpectrum = LocalSinkBaseband::MsgSetSpectrumSampleRateAndFrequency::create(
+        m_basebandSampleRate / (1 << m_settings.m_log2Decim),
+        m_centerFrequency + m_frequencyOffset
+    );
+    m_basebandSink->getInputMessageQueue()->push(msgSpectrum);
+
     m_running = true;
 }
 
@@ -198,6 +206,12 @@ bool LocalSink::handleMessage(const Message& cmd)
         {
             DSPSignalNotification *msg = new DSPSignalNotification(notif.getSampleRate(), notif.getCenterFrequency());
             m_basebandSink->getInputMessageQueue()->push(msg);
+            LocalSinkBaseband::MsgSetSpectrumSampleRateAndFrequency *msgSpectrum =
+                LocalSinkBaseband::MsgSetSpectrumSampleRateAndFrequency::create(
+                    m_basebandSampleRate / (1 << m_settings.m_log2Decim),
+                    m_centerFrequency + m_frequencyOffset
+                );
+            m_basebandSink->getInputMessageQueue()->push(msgSpectrum);
         }
 
         if (getMessageQueueToGUI()) {
@@ -336,6 +350,16 @@ void LocalSink::applySettings(const LocalSinkSettings& settings, bool force)
     {
         calculateFrequencyOffset(settings.m_log2Decim, settings.m_filterChainHash);
         propagateSampleRateAndFrequency(m_settings.m_localDeviceIndex, settings.m_log2Decim);
+
+        if (m_running)
+        {
+            LocalSinkBaseband::MsgSetSpectrumSampleRateAndFrequency *msgSpectrum =
+                LocalSinkBaseband::MsgSetSpectrumSampleRateAndFrequency::create(
+                    m_basebandSampleRate / (1 << m_settings.m_log2Decim),
+                    m_centerFrequency + m_frequencyOffset
+                );
+            m_basebandSink->getInputMessageQueue()->push(msgSpectrum);
+        }
     }
 
     if ((settings.m_play != m_settings.m_play) || force)
diff --git a/plugins/channelrx/localsink/localsink.h b/plugins/channelrx/localsink/localsink.h
index 75bd5c27a..d59d04e54 100644
--- a/plugins/channelrx/localsink/localsink.h
+++ b/plugins/channelrx/localsink/localsink.h
@@ -22,6 +22,7 @@
 #include <QNetworkRequest>
 
 #include "dsp/basebandsamplesink.h"
+#include "dsp/spectrumvis.h"
 #include "channel/channelapi.h"
 #include "util/message.h"
 
@@ -83,6 +84,7 @@ public:
     virtual void destroy() { delete this; }
     virtual void setDeviceAPI(DeviceAPI *deviceAPI);
     virtual DeviceAPI *getDeviceAPI() { return m_deviceAPI; }
+    SpectrumVis *getSpectrumVis() { return &m_spectrumVis; }
 
     using BasebandSampleSink::feed;
     virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool po);
@@ -146,6 +148,7 @@ private:
     bool m_running;
     LocalSinkSettings m_settings;
     QList<int> m_localInputDeviceIndexes;
+    SpectrumVis m_spectrumVis;
 
     uint64_t m_centerFrequency;
     int64_t m_frequencyOffset;
diff --git a/plugins/channelrx/localsink/localsinkbaseband.cpp b/plugins/channelrx/localsink/localsinkbaseband.cpp
index 10ccc2633..a82d8db7e 100644
--- a/plugins/channelrx/localsink/localsinkbaseband.cpp
+++ b/plugins/channelrx/localsink/localsinkbaseband.cpp
@@ -20,14 +20,17 @@
 #include "dsp/downchannelizer.h"
 #include "dsp/dspengine.h"
 #include "dsp/dspcommands.h"
+#include "dsp/spectrumvis.h"
 
 #include "localsinkbaseband.h"
 
 MESSAGE_CLASS_DEFINITION(LocalSinkBaseband::MsgConfigureLocalSinkBaseband, Message)
 MESSAGE_CLASS_DEFINITION(LocalSinkBaseband::MsgConfigureLocalDeviceSampleSource, Message)
+MESSAGE_CLASS_DEFINITION(LocalSinkBaseband::MsgSetSpectrumSampleRateAndFrequency, Message)
 
 LocalSinkBaseband::LocalSinkBaseband() :
-    m_localSampleSource(nullptr)
+    m_localSampleSource(nullptr),
+    m_spectrumVis(nullptr)
 {
     m_sampleFifo.setSize(SampleSinkFifo::getSizePolicy(48000));
     m_channelizer = new DownChannelizer(&m_sink);
@@ -137,6 +140,18 @@ bool LocalSinkBaseband::handleMessage(const Message& cmd)
 
         return  true;
     }
+    else if (MsgSetSpectrumSampleRateAndFrequency::match(cmd))
+    {
+        MsgSetSpectrumSampleRateAndFrequency& notif = (MsgSetSpectrumSampleRateAndFrequency&) cmd;
+
+        if (m_spectrumVis)
+        {
+            DSPSignalNotification *msg = new DSPSignalNotification(notif.getSampleRate(), notif.getCenterFrequency());
+            m_spectrumVis->getInputMessageQueue()->push(msg);
+        }
+
+        return true;
+    }
     else
     {
         return false;
diff --git a/plugins/channelrx/localsink/localsinkbaseband.h b/plugins/channelrx/localsink/localsinkbaseband.h
index 5a520ef81..95b5908d2 100644
--- a/plugins/channelrx/localsink/localsinkbaseband.h
+++ b/plugins/channelrx/localsink/localsinkbaseband.h
@@ -77,6 +77,28 @@ public:
         DeviceSampleSource *m_deviceSampleSource;
     };
 
+    class MsgSetSpectrumSampleRateAndFrequency : public Message {
+        MESSAGE_CLASS_DECLARATION
+
+    public:
+        static MsgSetSpectrumSampleRateAndFrequency* create(int sampleRate, qint64 centerFrequency) {
+            return new MsgSetSpectrumSampleRateAndFrequency(sampleRate, centerFrequency);
+        }
+
+        int getSampleRate() const { return m_sampleRate; }
+        qint64 getCenterFrequency() const { return m_centerFrequency; }
+
+    private:
+        MsgSetSpectrumSampleRateAndFrequency(int sampleRate, qint64 centerFrequency) :
+            Message(),
+            m_sampleRate(sampleRate),
+            m_centerFrequency(centerFrequency)
+        { }
+
+        int m_sampleRate;
+        qint64 m_centerFrequency;
+    };
+
     LocalSinkBaseband();
     ~LocalSinkBaseband();
     void reset();
@@ -86,6 +108,7 @@ public:
     void startSource() { m_sink.start(m_localSampleSource); }
     void stopSource() { m_sink.stop(); }
     void setFifoLabel(const QString& label) { m_sampleFifo.setLabel(label); }
+    void setSpectrumSink(SpectrumVis* spectrumSink) { m_spectrumVis = spectrumSink; m_sink.setSpectrumSink(spectrumSink); }
 
 private:
     SampleSinkFifo m_sampleFifo;
@@ -94,6 +117,7 @@ private:
 	MessageQueue m_inputMessageQueue; //!< Queue for asynchronous inbound communication
     LocalSinkSettings m_settings;
     DeviceSampleSource *m_localSampleSource;
+    SpectrumVis *m_spectrumVis;
     QRecursiveMutex m_mutex;
 
     bool handleMessage(const Message& cmd);
diff --git a/plugins/channelrx/localsink/localsinkgui.cpp b/plugins/channelrx/localsink/localsinkgui.cpp
index 162c49220..38369f1fc 100644
--- a/plugins/channelrx/localsink/localsinkgui.cpp
+++ b/plugins/channelrx/localsink/localsinkgui.cpp
@@ -83,6 +83,7 @@ bool LocalSinkGUI::handleMessage(const Message& message)
         const LocalSink::MsgConfigureLocalSink& cfg = (LocalSink::MsgConfigureLocalSink&) message;
         m_settings = cfg.getSettings();
         blockApplySettings(true);
+        ui->spectrumGUI->updateSettings();
         m_channelMarker.updateSettings(static_cast<const ChannelMarker*>(m_settings.m_channelMarker));
         displaySettings();
         blockApplySettings(false);
@@ -119,8 +120,13 @@ LocalSinkGUI::LocalSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseb
     connect(this, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(onMenuDialogCalled(const QPoint &)));
 
     m_localSink = (LocalSink*) channelrx;
+    m_spectrumVis = m_localSink->getSpectrumVis();
+	m_spectrumVis->setGLSpectrum(ui->glSpectrum);
     m_localSink->setMessageQueueToGUI(getInputMessageQueue());
 
+    ui->glSpectrum->setCenterFrequency(m_deviceCenterFrequency);
+    ui->glSpectrum->setSampleRate(m_basebandSampleRate);
+
     m_channelMarker.blockSignals(true);
     m_channelMarker.setColor(m_settings.m_rgbColor);
     m_channelMarker.setCenterFrequency(0);
@@ -129,11 +135,13 @@ LocalSinkGUI::LocalSinkGUI(PluginAPI* pluginAPI, DeviceUISet *deviceUISet, Baseb
     m_channelMarker.setVisible(true); // activate signal on the last setting only
 
     m_settings.setChannelMarker(&m_channelMarker);
+    m_settings.setSpectrumGUI(ui->spectrumGUI);
     m_settings.setRollupState(&m_rollupState);
 
     m_deviceUISet->addChannelMarker(&m_channelMarker);
 
     connect(getInputMessageQueue(), SIGNAL(messageEnqueued()), this, SLOT(handleSourceMessages()));
+    ui->spectrumGUI->setBuddies(m_spectrumVis, ui->glSpectrum);
 
     updateDeviceSetList(m_localSink->getDeviceSetList());
     displaySettings();
@@ -199,6 +207,8 @@ void LocalSinkGUI::displayRateAndShift()
     QLocale loc;
     ui->offsetFrequencyText->setText(tr("%1 Hz").arg(loc.toString(shift)));
     ui->channelRateText->setText(tr("%1k").arg(QString::number(channelSampleRate / 1000.0, 'g', 5)));
+    ui->glSpectrum->setSampleRate(channelSampleRate);
+    ui->glSpectrum->setCenterFrequency(m_deviceCenterFrequency + shift);
     m_channelMarker.setCenterFrequency(shift);
     m_channelMarker.setBandwidth(channelSampleRate);
 }
diff --git a/plugins/channelrx/localsink/localsinkgui.h b/plugins/channelrx/localsink/localsinkgui.h
index a5947d416..32df9a8d6 100644
--- a/plugins/channelrx/localsink/localsinkgui.h
+++ b/plugins/channelrx/localsink/localsinkgui.h
@@ -33,6 +33,7 @@ class PluginAPI;
 class DeviceUISet;
 class LocalSink;
 class BasebandSampleSink;
+class SpectrumVis;
 
 namespace Ui {
     class LocalSinkGUI;
@@ -73,6 +74,7 @@ private:
     bool m_doApplySettings;
 
     LocalSink* m_localSink;
+    SpectrumVis* m_spectrumVis;
     MessageQueue m_inputMessageQueue;
 
     uint32_t m_tickCount;
diff --git a/plugins/channelrx/localsink/localsinkgui.ui b/plugins/channelrx/localsink/localsinkgui.ui
index a1ef5e211..64e3e118c 100644
--- a/plugins/channelrx/localsink/localsinkgui.ui
+++ b/plugins/channelrx/localsink/localsinkgui.ui
@@ -6,26 +6,20 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>320</width>
-    <height>110</height>
+    <width>414</width>
+    <height>406</height>
    </rect>
   </property>
   <property name="sizePolicy">
-   <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+   <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
     <horstretch>0</horstretch>
     <verstretch>0</verstretch>
    </sizepolicy>
   </property>
   <property name="minimumSize">
    <size>
-    <width>320</width>
-    <height>100</height>
-   </size>
-  </property>
-  <property name="maximumSize">
-   <size>
-    <width>560</width>
-    <height>16777215</height>
+    <width>414</width>
+    <height>0</height>
    </size>
   </property>
   <property name="font">
@@ -42,7 +36,7 @@
     <rect>
      <x>10</x>
      <y>10</y>
-     <width>302</width>
+     <width>401</width>
      <height>91</height>
     </rect>
    </property>
@@ -313,6 +307,80 @@
     </item>
    </layout>
   </widget>
+  <widget class="QWidget" name="spectrumContainer" native="true">
+   <property name="geometry">
+    <rect>
+     <x>10</x>
+     <y>110</y>
+     <width>218</width>
+     <height>284</height>
+    </rect>
+   </property>
+   <property name="sizePolicy">
+    <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+     <horstretch>0</horstretch>
+     <verstretch>0</verstretch>
+    </sizepolicy>
+   </property>
+   <property name="windowTitle">
+    <string>Channel Spectrum</string>
+   </property>
+   <layout class="QVBoxLayout" name="verticalLayout_2">
+    <property name="spacing">
+     <number>2</number>
+    </property>
+    <property name="leftMargin">
+     <number>3</number>
+    </property>
+    <property name="topMargin">
+     <number>3</number>
+    </property>
+    <property name="rightMargin">
+     <number>3</number>
+    </property>
+    <property name="bottomMargin">
+     <number>3</number>
+    </property>
+    <item>
+     <widget class="GLSpectrum" name="glSpectrum" native="true">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="minimumSize">
+       <size>
+        <width>200</width>
+        <height>250</height>
+       </size>
+      </property>
+      <property name="font">
+       <font>
+        <family>Liberation Mono</family>
+        <pointsize>8</pointsize>
+       </font>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <widget class="GLSpectrumGUI" name="spectrumGUI" native="true">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="minimumSize">
+       <size>
+        <width>0</width>
+        <height>30</height>
+       </size>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
  </widget>
  <customwidgets>
   <customwidget>
@@ -326,6 +394,18 @@
    <header>gui/rollupcontents.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>GLSpectrum</class>
+   <extends>QWidget</extends>
+   <header>gui/glspectrum.h</header>
+   <container>1</container>
+  </customwidget>
+  <customwidget>
+   <class>GLSpectrumGUI</class>
+   <extends>QWidget</extends>
+   <header>gui/glspectrumgui.h</header>
+   <container>1</container>
+  </customwidget>
  </customwidgets>
  <resources>
   <include location="../../../sdrgui/resources/res.qrc"/>
diff --git a/plugins/channelrx/localsink/localsinksettings.h b/plugins/channelrx/localsink/localsinksettings.h
index 93cd41785..f5290ddf6 100644
--- a/plugins/channelrx/localsink/localsinksettings.h
+++ b/plugins/channelrx/localsink/localsinksettings.h
@@ -41,11 +41,13 @@ struct LocalSinkSettings
     QByteArray m_geometryBytes;
     bool m_hidden;
 
+    Serializable *m_spectrumGUI;
     Serializable *m_channelMarker;
     Serializable *m_rollupState;
 
     LocalSinkSettings();
     void resetToDefaults();
+    void setSpectrumGUI(Serializable *spectrumGUI) { m_spectrumGUI = spectrumGUI; }
     void setChannelMarker(Serializable *channelMarker) { m_channelMarker = channelMarker; }
     void setRollupState(Serializable *rollupState) { m_rollupState = rollupState; }
     QByteArray serialize() const;
diff --git a/plugins/channelrx/localsink/localsinksink.cpp b/plugins/channelrx/localsink/localsinksink.cpp
index 777d25ae1..77d871806 100644
--- a/plugins/channelrx/localsink/localsinksink.cpp
+++ b/plugins/channelrx/localsink/localsinksink.cpp
@@ -21,6 +21,7 @@
 #include <boost/cstdint.hpp>
 #include "dsp/devicesamplesource.h"
 #include "dsp/hbfilterchainconverter.h"
+#include "dsp/spectrumvis.h"
 
 #include "localsinkworker.h"
 #include "localsinksink.h"
@@ -28,6 +29,7 @@
 LocalSinkSink::LocalSinkSink() :
     m_deviceSource(nullptr),
     m_sinkWorker(nullptr),
+    m_spectrumSink(nullptr),
     m_running(false),
     m_centerFrequency(0),
     m_frequencyOffset(0),
@@ -47,6 +49,10 @@ void LocalSinkSink::feed(const SampleVector::const_iterator& begin, const Sample
     if (m_running && m_deviceSource) {
         m_deviceSource->getSampleFifo()->write(begin, end);
     }
+
+    if (m_spectrumSink) {
+        m_spectrumSink->feed(begin, end, false);
+    }
     // m_sampleFifo.write(begin, end);
 }
 
diff --git a/plugins/channelrx/localsink/localsinksink.h b/plugins/channelrx/localsink/localsinksink.h
index 2552f4dca..480a227f2 100644
--- a/plugins/channelrx/localsink/localsinksink.h
+++ b/plugins/channelrx/localsink/localsinksink.h
@@ -27,6 +27,7 @@
 
 class DeviceSampleSource;
 class LocalSinkWorker;
+class SpectrumVis;
 
 class LocalSinkSink : public QObject, public ChannelSampleSink {
     Q_OBJECT
@@ -36,6 +37,7 @@ public:
 
 	virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end);
 
+    void setSpectrumSink(SpectrumVis* spectrumSink) { m_spectrumSink = spectrumSink; }
     void applySettings(const LocalSinkSettings& settings, bool force = false);
     void start(DeviceSampleSource *deviceSource);
     void stop();
@@ -48,6 +50,8 @@ private:
     LocalSinkSettings m_settings;
     LocalSinkWorker *m_sinkWorker;
     QThread m_sinkWorkerThread;
+    SpectrumVis* m_spectrumSink;
+    SampleVector m_spectrumBuffer;
     bool m_running;
 
     uint64_t m_centerFrequency;