diff --git a/plugins/samplesource/plutosdrinput/plutosdrinputgui.cpp b/plugins/samplesource/plutosdrinput/plutosdrinputgui.cpp
index 72098215f..c9bf309bb 100644
--- a/plugins/samplesource/plutosdrinput/plutosdrinputgui.cpp
+++ b/plugins/samplesource/plutosdrinput/plutosdrinputgui.cpp
@@ -103,6 +103,8 @@ qint64 PlutoSDRInputGui::getCenterFrequency() const
 void PlutoSDRInputGui::setCenterFrequency(qint64 centerFrequency)
 {
     m_settings.m_centerFrequency = centerFrequency;
+    displaySettings();
+    sendSettings();
 }
 
 QByteArray PlutoSDRInputGui::serialize() const
@@ -264,6 +266,7 @@ void PlutoSDRInputGui::displaySettings()
 
     ui->dcOffset->setChecked(m_settings.m_dcBlock);
     ui->iqImbalance->setChecked(m_settings.m_iqCorrection);
+    ui->loPPM->setValue(m_settings.m_LOppmTenths);
     ui->loPPMText->setText(QString("%1").arg(QString::number(m_settings.m_LOppmTenths/10.0, 'f', 1)));
 
     ui->swDecim->setCurrentIndex(m_settings.m_log2Decim);
diff --git a/plugins/samplesource/plutosdrinput/plutosdrinputgui.ui b/plugins/samplesource/plutosdrinput/plutosdrinputgui.ui
index 17bf6a526..1c3b18912 100644
--- a/plugins/samplesource/plutosdrinput/plutosdrinputgui.ui
+++ b/plugins/samplesource/plutosdrinput/plutosdrinputgui.ui
@@ -216,10 +216,10 @@
         <string>Local oscillator correction (ppm)</string>
        </property>
        <property name="minimum">
-        <number>-100</number>
+        <number>-200</number>
        </property>
        <property name="maximum">
-        <number>100</number>
+        <number>200</number>
        </property>
        <property name="pageStep">
         <number>1</number>
@@ -881,7 +881,7 @@
         </size>
        </property>
        <property name="toolTip">
-        <string>Device RSSI indication</string>
+        <string>Device RSSI indication (dB)</string>
        </property>
        <property name="text">
         <string>-100.00 dB</string>
diff --git a/sdrbase/device/devicesourceapi.cpp b/sdrbase/device/devicesourceapi.cpp
index 24d90886e..737fb0c81 100644
--- a/sdrbase/device/devicesourceapi.cpp
+++ b/sdrbase/device/devicesourceapi.cpp
@@ -242,11 +242,16 @@ void DeviceSourceAPI::loadSourceSettings(const Preset* preset)
 
             if (sourceConfig != 0)
             {
-                qDebug("DeviceSourceAPI::loadSettings: deserializing source %s", qPrintable(m_sampleSourceId));
+                qDebug("DeviceSourceAPI::loadSettings: deserializing source %s[%d]: %s", qPrintable(m_sampleSourceId), m_sampleSourceSequence, qPrintable(m_sampleSourceSerial));
                 m_sampleSourcePluginInstanceUI->deserialize(*sourceConfig);
             }
+            else
+            {
+                qDebug("DeviceSourceAPI::loadSettings: source %s[%d]: %s not found", qPrintable(m_sampleSourceId), m_sampleSourceSequence, qPrintable(m_sampleSourceSerial));
+            }
 
             qint64 centerFrequency = preset->getCenterFrequency();
+            qDebug("DeviceSourceAPI::loadSettings: center frequency: %llu Hz", centerFrequency);
             m_sampleSourcePluginInstanceUI->setCenterFrequency(centerFrequency);
         }
     }