diff --git a/plugins/samplesource/testsource/testsourcegui.ui b/plugins/samplesource/testsource/testsourcegui.ui
index 90fb1f795..2abaa5717 100644
--- a/plugins/samplesource/testsource/testsourcegui.ui
+++ b/plugins/samplesource/testsource/testsourcegui.ui
@@ -482,7 +482,12 @@
        </item>
        <item>
         <property name="text">
-         <string>Pul</string>
+         <string>P0</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>P1</string>
         </property>
        </item>
       </widget>
diff --git a/plugins/samplesource/testsource/testsourceinput.cpp b/plugins/samplesource/testsource/testsourceinput.cpp
index 94efed087..6a5509481 100644
--- a/plugins/samplesource/testsource/testsourceinput.cpp
+++ b/plugins/samplesource/testsource/testsourceinput.cpp
@@ -354,8 +354,15 @@ bool TestSourceInput::applySettings(const TestSourceSettings& settings, bool for
 
     if ((m_settings.m_modulation != settings.m_modulation) || force)
     {
-        if (m_testSourceThread != 0) {
+        if (m_testSourceThread != 0)
+        {
             m_testSourceThread->setModulation(settings.m_modulation);
+
+            if (settings.m_modulation == TestSourceSettings::ModulationPattern0) {
+                m_testSourceThread->setPattern0();
+            } else if (settings.m_modulation == TestSourceSettings::ModulationPattern1) {
+                m_testSourceThread->setPattern1();
+            }
         }
     }
 
diff --git a/plugins/samplesource/testsource/testsourcesettings.h b/plugins/samplesource/testsource/testsourcesettings.h
index 37dd52797..9c1c8f3fe 100644
--- a/plugins/samplesource/testsource/testsourcesettings.h
+++ b/plugins/samplesource/testsource/testsourcesettings.h
@@ -37,7 +37,8 @@ struct TestSourceSettings {
         ModulationNone,
         ModulationAM,
         ModulationFM,
-        ModulationPulse,
+        ModulationPattern0,
+        ModulationPattern1,
         ModulationLast
     } Modulation;
 
diff --git a/plugins/samplesource/testsource/testsourcethread.cpp b/plugins/samplesource/testsource/testsourcethread.cpp
index 432a5aa12..5f37d726f 100644
--- a/plugins/samplesource/testsource/testsourcethread.cpp
+++ b/plugins/samplesource/testsource/testsourcethread.cpp
@@ -267,7 +267,7 @@ void TestSourceThread::generate(quint32 chunksize)
             m_buf[i++] = (int16_t) (im * (float) m_amplitudeBitsQ);
         }
         break;
-        case TestSourceSettings::ModulationPulse:
+        case TestSourceSettings::ModulationPattern0: // binary pattern
         {
             if (m_pulseSampleCount < m_pulseWidth) // sync pattern: 0
             {
@@ -288,7 +288,7 @@ void TestSourceThread::generate(quint32 chunksize)
             {
                 uint32_t patPulseSampleCount = m_pulseSampleCount - 3*m_pulseWidth;
                 uint32_t patPulseIndex = patPulseSampleCount / m_pulseWidth;
-                float patFigure = (m_pulsePatternCount & (1<<patPulseIndex)) != 0 ? 0.1 : 0.0; // make binary pattern -20dB vs sync pattern
+                float patFigure = (m_pulsePatternCount & (1<<patPulseIndex)) != 0 ? 0.3 : 0.0; // make binary pattern ~-10dB vs sync pattern
                 m_buf[i++] = (int16_t) (patFigure * (float) m_amplitudeBitsI) + m_amplitudeBitsDC;
                 m_buf[i++] = (int16_t) (patFigure * (float) m_phaseImbalance * m_amplitudeBitsQ);
             }
@@ -309,6 +309,21 @@ void TestSourceThread::generate(quint32 chunksize)
             }
         }
         break;
+        case TestSourceSettings::ModulationPattern1: // sawtooth pattern
+        {
+            Real re, im;
+            re = (float) (m_pulseWidth - m_pulseSampleCount) / (float) m_pulseWidth;
+            im = m_phaseImbalance*re;
+            m_buf[i++] = (int16_t) (re * (float) m_amplitudeBitsI) + m_amplitudeBitsDC;
+            m_buf[i++] = (int16_t) (im * (float) m_amplitudeBitsQ);
+
+            if (m_pulseSampleCount < m_pulseWidth - 1) {
+                m_pulseSampleCount++;
+            } else {
+                m_pulseSampleCount = 0;
+            }
+        }
+        break;
         case TestSourceSettings::ModulationNone:
         default:
         {
@@ -389,3 +404,18 @@ void TestSourceThread::handleInputMessages()
         }
     }
 }
+
+void TestSourceThread::setPattern0()
+{
+    m_pulseWidth = 150;
+    m_pulseSampleCount = 0;
+    m_pulsePatternCount = 0;
+    m_pulsePatternCycle = 8;
+    m_pulsePatternPlaces = 3;
+}
+
+void TestSourceThread::setPattern1()
+{
+    m_pulseWidth = 1000;
+    m_pulseSampleCount = 0;
+}
diff --git a/plugins/samplesource/testsource/testsourcethread.h b/plugins/samplesource/testsource/testsourcethread.h
index 276a8c506..7667eddf8 100644
--- a/plugins/samplesource/testsource/testsourcethread.h
+++ b/plugins/samplesource/testsource/testsourcethread.h
@@ -75,6 +75,8 @@ public:
     void setModulation(TestSourceSettings::Modulation modulation);
     void setAMModulation(float amModulation);
     void setFMDeviation(float deviation);
+    void setPattern0();
+    void setPattern1();
 
 private:
 	QMutex m_startWaitMutex;