diff --git a/plugins/channelrx/udpsrc/udpsrcgui.cpp b/plugins/channelrx/udpsrc/udpsrcgui.cpp
index ed85416f2..1da030d4c 100644
--- a/plugins/channelrx/udpsrc/udpsrcgui.cpp
+++ b/plugins/channelrx/udpsrc/udpsrcgui.cpp
@@ -246,8 +246,9 @@ UDPSrcGUI::UDPSrcGUI(PluginAPI* pluginAPI, DeviceSourceAPI *deviceAPI, QWidget*
 
 	ui->fmDeviation->setEnabled(false);
 
-	ui->deltaFrequency->setColorMapper(ColorMapper(ColorMapper::GrayGold));
-	ui->deltaFrequency->setValueRange(7, 0U, 9999999U);
+    ui->deltaFrequencyLabel->setText(QString("%1f").arg(QChar(0x94, 0x03)));
+    ui->deltaFrequency->setColorMapper(ColorMapper(ColorMapper::GrayGold));
+    ui->deltaFrequency->setValueRange(false, 7, -9999999, 9999999);
 
 	ui->glSpectrum->setCenterFrequency(0);
 	ui->glSpectrum->setSampleRate(ui->sampleRate->text().toInt());
@@ -357,8 +358,7 @@ void UDPSrcGUI::applySettings()
 		int boost = ui->boost->value();
 
 		setTitleColor(m_channelMarker.getColor());
-		ui->deltaFrequency->setValue(abs(m_channelMarker.getCenterFrequency()));
-		ui->deltaMinus->setChecked(m_channelMarker.getCenterFrequency() < 0);
+		ui->deltaFrequency->setValue(m_channelMarker.getCenterFrequency());
 		ui->sampleRate->setText(QString("%1").arg(outputSampleRate, 0));
 		ui->rfBandwidth->setText(QString("%1").arg(rfBandwidth, 0));
 		//ui->udpAddress->setText(m_udpAddress);
@@ -438,24 +438,9 @@ void UDPSrcGUI::applySettings()
 	}
 }
 
-void UDPSrcGUI::on_deltaMinus_toggled(bool minus)
+void UDPSrcGUI::on_deltaFrequency_changed(qint64 value)
 {
-	int deltaFrequency = m_channelMarker.getCenterFrequency();
-	bool minusDelta = (deltaFrequency < 0);
-
-	if (minus ^ minusDelta) // sign change
-	{
-		m_channelMarker.setCenterFrequency(-deltaFrequency);
-	}
-}
-
-void UDPSrcGUI::on_deltaFrequency_changed(quint64 value)
-{
-	if (ui->deltaMinus->isChecked()) {
-		m_channelMarker.setCenterFrequency(-value);
-	} else {
-		m_channelMarker.setCenterFrequency(value);
-	}
+    m_channelMarker.setCenterFrequency(value);
 }
 
 void UDPSrcGUI::on_sampleFormat_currentIndexChanged(int index)
diff --git a/plugins/channelrx/udpsrc/udpsrcgui.h b/plugins/channelrx/udpsrc/udpsrcgui.h
index b9efc76e3..44a179c88 100644
--- a/plugins/channelrx/udpsrc/udpsrcgui.h
+++ b/plugins/channelrx/udpsrc/udpsrcgui.h
@@ -59,8 +59,7 @@ public:
 
 private slots:
 	void channelMarkerChanged();
-	void on_deltaFrequency_changed(quint64 value);
-	void on_deltaMinus_toggled(bool minus);
+	void on_deltaFrequency_changed(qint64 value);
 	void on_sampleFormat_currentIndexChanged(int index);
 	void on_sampleRate_textEdited(const QString& arg1);
 	void on_rfBandwidth_textEdited(const QString& arg1);
diff --git a/plugins/channelrx/udpsrc/udpsrcgui.ui b/plugins/channelrx/udpsrc/udpsrcgui.ui
index e729bce73..9d01ee4f7 100644
--- a/plugins/channelrx/udpsrc/udpsrcgui.ui
+++ b/plugins/channelrx/udpsrc/udpsrcgui.ui
@@ -181,29 +181,20 @@
        <number>2</number>
       </property>
       <item>
-       <widget class="QToolButton" name="deltaMinus">
-        <property name="toolTip">
-         <string>Frequency shift direction</string>
+       <widget class="QLabel" name="deltaFrequencyLabel">
+        <property name="maximumSize">
+         <size>
+          <width>16</width>
+          <height>16777215</height>
+         </size>
         </property>
         <property name="text">
-         <string>...</string>
-        </property>
-        <property name="icon">
-         <iconset>
-          <selectedoff>:/plus.png</selectedoff>
-          <selectedon>:/minus.png</selectedon>
-         </iconset>
-        </property>
-        <property name="checkable">
-         <bool>true</bool>
-        </property>
-        <property name="checked">
-         <bool>false</bool>
+         <string>Df</string>
         </property>
        </widget>
       </item>
       <item>
-       <widget class="ValueDial" name="deltaFrequency" native="true">
+       <widget class="ValueDialZ" name="deltaFrequency" native="true">
         <property name="sizePolicy">
          <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
           <horstretch>0</horstretch>
@@ -570,12 +561,6 @@
    <header>gui/rollupwidget.h</header>
    <container>1</container>
   </customwidget>
-  <customwidget>
-   <class>ValueDial</class>
-   <extends>QWidget</extends>
-   <header>gui/valuedial.h</header>
-   <container>1</container>
-  </customwidget>
   <customwidget>
    <class>GLSpectrum</class>
    <extends>QWidget</extends>
@@ -588,6 +573,12 @@
    <header>gui/glspectrumgui.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>ValueDialZ</class>
+   <extends>QWidget</extends>
+   <header>gui/valuedialz.h</header>
+   <container>1</container>
+  </customwidget>
  </customwidgets>
  <tabstops>
   <tabstop>sampleFormat</tabstop>