Index: trunk/BNC/bncwindow.cpp
===================================================================
--- trunk/BNC/bncwindow.cpp	(revision 2085)
+++ trunk/BNC/bncwindow.cpp	(revision 2086)
@@ -308,4 +308,7 @@
   _pppUsePhaseCheckBox->setCheckState(Qt::CheckState(
                                       settings.value("pppUsePhase").toInt()));
+  _pppEstTropoCheckBox = new QCheckBox();
+  _pppEstTropoCheckBox->setCheckState(Qt::CheckState(
+                                      settings.value("pppEstTropo").toInt()));
 
   // Streams
@@ -732,10 +735,12 @@
   QGridLayout* pppLayout = new QGridLayout;
   pppLayout->setColumnMinimumWidth(0,14*ww);
-  pppLayout->addWidget(new QLabel("Mountpoint"),    0, 0);
-  pppLayout->addWidget(_pppMountLineEdit,           0, 1, 1, 3);
-  pppLayout->addWidget(new QLabel("Static"),        1, 0);
-  pppLayout->addWidget(_pppStaticCheckBox,          1, 1);
-  pppLayout->addWidget(new QLabel("Use Phase Obs"), 2, 0);
-  pppLayout->addWidget(_pppUsePhaseCheckBox,        2, 1);
+  pppLayout->addWidget(new QLabel("Mountpoint"),     0, 0);
+  pppLayout->addWidget(_pppMountLineEdit,            0, 1, 1, 3);
+  pppLayout->addWidget(new QLabel("Static"),         1, 0);
+  pppLayout->addWidget(_pppStaticCheckBox,           1, 1);
+  pppLayout->addWidget(new QLabel("Use Phase Obs"),  2, 0);
+  pppLayout->addWidget(_pppUsePhaseCheckBox,         2, 1);
+  pppLayout->addWidget(new QLabel("Estimate Tropo"), 3, 0);
+  pppLayout->addWidget(_pppEstTropoCheckBox,         3, 1);
   pppgroup->setLayout(pppLayout);
 
@@ -1045,4 +1050,5 @@
   settings.setValue("pppStatic",   _pppStaticCheckBox->checkState());
   settings.setValue("pppUsePhase", _pppUsePhaseCheckBox->checkState());
+  settings.setValue("pppEstTropo", _pppEstTropoCheckBox->checkState());
   settings.setValue("mountPoints", mountPoints);
   settings.setValue("obsRate",     _obsRateComboBox->currentText());
Index: trunk/BNC/bncwindow.h
===================================================================
--- trunk/BNC/bncwindow.h	(revision 2085)
+++ trunk/BNC/bncwindow.h	(revision 2086)
@@ -115,4 +115,5 @@
     QCheckBox* _pppStaticCheckBox;
     QCheckBox* _pppUsePhaseCheckBox;
+    QCheckBox* _pppEstTropoCheckBox;
     QCheckBox* _rnxV3CheckBox;
     QCheckBox* _ephV3CheckBox;