diff --git a/include-gpl/dsp/scopevis.h b/include-gpl/dsp/scopevis.h
index 7f4605fcc..7a44a3482 100644
--- a/include-gpl/dsp/scopevis.h
+++ b/include-gpl/dsp/scopevis.h
@@ -70,10 +70,11 @@ private:
 	uint m_fill;
 	TriggerState m_triggerState;
 	TriggerChannel m_triggerChannel;
-	FixReal m_triggerLevelHigh;
-	FixReal m_triggerLevelLow;
+	Real m_triggerLevel;
 	bool m_triggerPositiveEdge;
 	int m_sampleRate;
+
+	bool triggerCondition(SampleVector::const_iterator& it);
 };
 
 #endif // INCLUDE_SCOPEVIS_H
diff --git a/sdrbase/dsp/scopevis.cpp b/sdrbase/dsp/scopevis.cpp
index 4603062d8..87f9ad69e 100644
--- a/sdrbase/dsp/scopevis.cpp
+++ b/sdrbase/dsp/scopevis.cpp
@@ -4,6 +4,7 @@
 #include "util/messagequeue.h"
 
 #include <cstdio>
+#include <iostream>
 
 MESSAGE_CLASS_DEFINITION(ScopeVis::MsgConfigureScopeVis, Message)
 
@@ -13,8 +14,7 @@ ScopeVis::ScopeVis(GLScope* glScope) :
 	m_fill(0),
 	m_triggerState(Untriggered),
 	m_triggerChannel(TriggerFreeRun),
-	m_triggerLevelHigh(0.01 * 32768),
-	m_triggerLevelLow(0.01 * 32768 - 1024),
+	m_triggerLevel(0.0),
 	m_triggerPositiveEdge(true),
 	m_sampleRate(0)
 {
@@ -46,11 +46,11 @@ void ScopeVis::feed(SampleVector::const_iterator begin, SampleVector::const_iter
 				m_fill = 0;
 			}
 		}
-		else if (m_triggerChannel == TriggerChannelI)
+		else
 		{
 			if(m_triggerState == Untriggered) {
 				while(begin < end) {
-					if(begin->real() >= m_triggerLevelHigh) {
+					if (triggerCondition(begin)) {
 						m_triggerState = Triggered;
 						break;
 					}
@@ -70,53 +70,7 @@ void ScopeVis::feed(SampleVector::const_iterator begin, SampleVector::const_iter
 				if(m_fill >= m_trace.size()) {
 					m_glScope->newTrace(m_trace, m_sampleRate);
 					m_fill = 0;
-					m_triggerState = WaitForReset;
-				}
-			}
-			if(m_triggerState == WaitForReset) {
-				while(begin < end) {
-					if(begin->real() < m_triggerLevelLow) {
-						m_triggerState = Untriggered;
-						break;
-					}
-					++begin;
-				}
-			}
-		}
-		else if (m_triggerChannel == TriggerChannelQ)
-		{
-			if(m_triggerState == Untriggered) {
-				while(begin < end) {
-					if(begin->imag() >= m_triggerLevelHigh) {
-						m_triggerState = Triggered;
-						break;
-					}
-					++begin;
-				}
-			}
-			if(m_triggerState == Triggered) {
-				int count = end - begin;
-				if(count > (int)(m_trace.size() - m_fill))
-					count = m_trace.size() - m_fill;
-				std::vector<Complex>::iterator it = m_trace.begin() + m_fill;
-				for(int i = 0; i < count; ++i) {
-					*it++ = Complex(begin->real() / 32768.0, begin->imag() / 32768.0);
-					++begin;
-				}
-				m_fill += count;
-				if(m_fill >= m_trace.size()) {
-					m_glScope->newTrace(m_trace, m_sampleRate);
-					m_fill = 0;
-					m_triggerState = WaitForReset;
-				}
-			}
-			if(m_triggerState == WaitForReset) {
-				while(begin < end) {
-					if(begin->imag() < m_triggerLevelLow) {
-						m_triggerState = Untriggered;
-						break;
-					}
-					++begin;
+					m_triggerState = Untriggered;
 				}
 			}
 		}
@@ -142,8 +96,12 @@ bool ScopeVis::handleMessageKeep(Message* message)
 		MsgConfigureScopeVis* conf = (MsgConfigureScopeVis*)message;
 		m_triggerState = Untriggered;
 		m_triggerChannel = (TriggerChannel) conf->getTriggerChannel();
-		m_triggerLevelHigh = conf->getTriggerLevel() * 32767;
+		m_triggerLevel = conf->getTriggerLevel();
 		m_triggerPositiveEdge = conf->getTriggerPositiveEdge();
+		std::cerr << "ScopeVis::handleMessageKeep:"
+				<< " m_triggerChannel: " << m_triggerChannel
+				<< " m_triggerLevel: " << m_triggerLevel
+				<< " m_triggerPositiveEdge: " << (m_triggerPositiveEdge ? "edge+" : "edge-") << std::endl;
 		return true;
 	/*
 	} else if(DSPConfigureScopeVis::match(message)) {
@@ -174,3 +132,29 @@ void ScopeVis::setSampleRate(int sampleRate)
 {
 	m_sampleRate = sampleRate;
 }
+
+bool ScopeVis::triggerCondition(SampleVector::const_iterator& it)
+{
+	Complex c(it->real()/32768.0, it->imag()/32768.0);
+
+	if (m_triggerChannel == TriggerChannelI) {
+		return c.real() > m_triggerLevel;
+	}
+	else if (m_triggerChannel == TriggerChannelQ) {
+		return c.imag() > m_triggerLevel;
+	}
+	else if (m_triggerChannel == TriggerMagLin) {
+		return abs(c) > m_triggerLevel;
+	}
+	else if (m_triggerChannel == TriggerMagDb) {
+		Real mult = (10.0f / log2f(10.0f));
+		Real v = c.real() * c.real() + c.imag() * c.imag();
+		return mult * log2f(v) > m_triggerLevel;
+	}
+	else if (m_triggerChannel == TriggerPhase) {
+		return arg(c) / M_PI > m_triggerLevel;
+	}
+	else {
+		return false;
+	}
+}
diff --git a/sdrbase/gui/glscopegui.cpp b/sdrbase/gui/glscopegui.cpp
index 60d1e4feb..65b1d1106 100644
--- a/sdrbase/gui/glscopegui.cpp
+++ b/sdrbase/gui/glscopegui.cpp
@@ -165,6 +165,16 @@ void GLScopeGUI::applySettings()
 
 void GLScopeGUI::applyTriggerSettings()
 {
+	Real triggerLevel;
+
+	if (m_triggerChannel == ScopeVis::TriggerMagDb) {
+		triggerLevel = m_triggerLevel - 100.0;
+	}
+	else {
+		triggerLevel = m_triggerLevel / 100.0;
+	}
+
+	m_scopeVis->configure(m_messageQueue, (ScopeVis::TriggerChannel) m_triggerChannel, triggerLevel, m_triggerPositiveEdge);
 }
 
 void GLScopeGUI::setTrigLevelDisplay()