diff --git a/rigcommander.cpp b/rigcommander.cpp
index 4ae8bab..0b954f4 100644
--- a/rigcommander.cpp
+++ b/rigcommander.cpp
@@ -149,7 +149,7 @@ void rigCommander::setup()
 
     lookingForRig = false;
     foundRig = false;
-    oldScopeMode = 3;
+    oldScopeMode = spectModeUnknown;
 
     pttAllowed = true; // This is for developing, set to false for "safe" debugging. Set to true for deployment.
 }
@@ -326,7 +326,7 @@ void rigCommander::getScopeMode()
 {
     // center or fixed
     QByteArray payload;
-    payload.setRawData("\x27\x14", 2);
+    payload.setRawData("\x27\x14\x00", 3);
     prepDataAndSend(payload);
 }
 
@@ -419,6 +419,14 @@ void rigCommander::setSpectrumCenteredMode(bool centerEnable)
     prepDataAndSend(specModePayload);
 }
 
+void rigCommander::setSpectrumMode(spectrumMode spectMode)
+{
+    QByteArray specModePayload;
+    specModePayload.setRawData("\x27\x14\x00", 3);
+    specModePayload.append( static_cast<unsigned char>(spectMode) );
+    prepDataAndSend(specModePayload);
+}
+
 void rigCommander::getSpectrumRefLevel()
 {
     QByteArray payload;
@@ -468,6 +476,13 @@ void rigCommander::getSpectrumCenterMode()
     prepDataAndSend(specModePayload);
 }
 
+void rigCommander::getSpectrumMode()
+{
+    QByteArray specModePayload;
+    specModePayload.setRawData("\x27\x14", 2);
+    prepDataAndSend(specModePayload);
+}
+
 void rigCommander::setFrequency(double freq)
 {
     QByteArray freqPayload = makeFreqPayload(freq);
@@ -1970,11 +1985,11 @@ void rigCommander::parseWFData()
             break;
         case 0x14:
             // fixed or center
-            emit haveSpectrumFixedMode((bool)payloadIn[2]);
-            qDebug(logRig()) << "received 0x14 command fix/center";
-            printHex(payloadIn, false, true);
+            //emit haveSpectrumFixedMode((bool)payloadIn[2]);
+            emit haveSpectrumMode(static_cast<spectrumMode>((unsigned char)payloadIn[3]));
             // [1] 0x14
-            // [2] 0x00 (center), 0x01 (fixed)
+            // [2] 0x00
+            // [3] 0x00 (center), 0x01 (fixed), 0x02, 0x03
             break;
         case 0x15:
             // read span in center mode
@@ -2236,22 +2251,28 @@ void rigCommander::parseSpectrum()
     if ((sequence == 1) && (sequence < rigCaps.spectSeqMax))
     {
 
-        unsigned char scopeMode = bcdHexToUChar(payloadIn[05]); // 0=center, 1=fixed
+        spectrumMode scopeMode = (spectrumMode)bcdHexToUChar(payloadIn[05]); // 0=center, 1=fixed
 
         if(scopeMode != oldScopeMode)
         {
-            //TODO: Figure out if this is the first spectrum, and if so, always emit.
-            emit haveSpectrumFixedMode(scopeMode==1);
+            //TODO: support the other two modes (firmware 1.40)
+            // Modes:
+            // 0x00 Center
+            // 0x01 Fixed
+            // 0x02 Scroll-C
+            // 0x03 Scroll-F
+            emit haveSpectrumMode(scopeMode);
+            emit haveSpectrumFixedMode(scopeMode==spectModeFixed);
             oldScopeMode = scopeMode;
         }
 
 
         // wave information
         spectrumLine.clear();
-        // parseFrequency(endPosition); // overload does not emit! Return? Where? how...
+        // For Fixed, and both scroll modes, the following produces correct information:
         spectrumStartFreq = parseFrequency(payloadIn, 9);
         spectrumEndFreq = parseFrequency(payloadIn, 14);
-        if(scopeMode == 0)
+        if(scopeMode == spectModeCenter)
         {
             // "center" mode, start is actuall center, end is bandwidth.
             spectrumStartFreq -= spectrumEndFreq;
diff --git a/rigcommander.h b/rigcommander.h
index 75ab5ac..e27fa57 100644
--- a/rigcommander.h
+++ b/rigcommander.h
@@ -36,6 +36,14 @@ enum meterKind {
     meterCurrent
 };
 
+enum spectrumMode {
+    spectModeCenter=0x00,
+    spectModeFixed=0x01,
+    spectModeScrollC=0x02,
+    spectModeScrollF=0x03,
+    spectModeUnknown=0xff
+};
+
 class rigCommander : public QObject
 {
     Q_OBJECT
@@ -57,7 +65,9 @@ public slots:
     void disableSpectrumDisplay();
     void setSpectrumBounds(double startFreq, double endFreq, unsigned char edgeNumber);
     void setSpectrumCenteredMode(bool centerEnable); // centered or band-wise
+    void setSpectrumMode(spectrumMode spectMode);
     void getSpectrumCenterMode();
+    void getSpectrumMode();
     void setSpectrumRefLevel(int level);
     void getSpectrumRefLevel();
     void getSpectrumRefLevel(unsigned char mainSub);
@@ -161,6 +171,7 @@ signals:
     void haveSpectrumBounds();
     void haveScopeSpan(char span);
     void haveSpectrumFixedMode(bool fixedEnabled);
+    void haveSpectrumMode(spectrumMode spectmode);
     void haveScopeEdge(char edge);
     void haveSpectrumRefLevel(int level);
 
@@ -260,7 +271,7 @@ private:
     quint8 spectSeqMax;
     quint16 spectAmpMax;
     quint16 spectLenMax;
-    unsigned char oldScopeMode;
+    spectrumMode oldScopeMode;
 
     bool usingNativeLAN; // indicates using OEM LAN connection (705,7610,9700,7850)
     bool lookingForRig;
diff --git a/wfmain.cpp b/wfmain.cpp
index 0d4c247..3123a46 100644
--- a/wfmain.cpp
+++ b/wfmain.cpp
@@ -171,6 +171,12 @@ wfmain::wfmain(const QString serialPortCL, const QString hostCL, QWidget *parent
     loadSettings(); // Look for saved preferences
     setTuningSteps(); // TODO: Combine into preferences
 
+    ui->spectrumModeCombo->addItem("Center", (spectrumMode)spectModeCenter);
+    ui->spectrumModeCombo->addItem("Fixed", (spectrumMode)spectModeFixed);
+    ui->spectrumModeCombo->addItem("Scroll-C", (spectrumMode)spectModeScrollC);
+    ui->spectrumModeCombo->addItem("Scroll-F", (spectrumMode)spectModeScrollF);
+
+
     // if setting for serial port is "auto" then...
 //    if(prefs.serialPortRadio == QString("auto"))
 //    {
@@ -285,6 +291,7 @@ wfmain::wfmain(const QString serialPortCL, const QString hostCL, QWidget *parent
     qRegisterMetaType<duplexMode>();
     qRegisterMetaType<rigInput>();
     qRegisterMetaType<meterKind>();
+    qRegisterMetaType<spectrumMode>();
 
     connect(rig, SIGNAL(haveFrequency(double)), this, SLOT(receiveFreq(double)));
     connect(this, SIGNAL(getFrequency()), rig, SLOT(getFrequency()));
@@ -315,8 +322,11 @@ wfmain::wfmain(const QString serialPortCL, const QString hostCL, QWidget *parent
 
     connect(rig, SIGNAL(haveSpectrumData(QByteArray, double, double)), this, SLOT(receiveSpectrumData(QByteArray, double, double)));
     connect(rig, SIGNAL(haveSpectrumFixedMode(bool)), this, SLOT(receiveSpectrumFixedMode(bool)));
+    connect(rig, SIGNAL(haveSpectrumMode(spectrumMode)), this, SLOT(receiveSpectrumMode(spectrumMode)));
+    connect(this, SIGNAL(setScopeMode(spectrumMode)), rig, SLOT(setSpectrumMode(spectrumMode)));
+    connect(this, SIGNAL(getScopeMode()), rig, SLOT(getScopeMode()));
+
     connect(this, SIGNAL(setFrequency(double)), rig, SLOT(setFrequency(double)));
-    connect(this, SIGNAL(setScopeCenterMode(bool)), rig, SLOT(setSpectrumCenteredMode(bool)));
     connect(this, SIGNAL(setScopeEdge(char)), rig, SLOT(setScopeEdge(char)));
     connect(this, SIGNAL(setScopeSpan(char)), rig, SLOT(setScopeSpan(char)));
     connect(this, SIGNAL(getScopeMode()), rig, SLOT(getScopeMode()));
@@ -1581,10 +1591,10 @@ void wfmain::runPeriodicCommands()
                 emit getATUStatus();
                 break;
             case cmdScopeCenterMode:
-                emit setScopeCenterMode(true);
+                emit setScopeMode(spectModeCenter);
                 break;
             case cmdScopeFixedMode:
-                emit setScopeCenterMode(false);
+                emit setScopeMode(spectModeFixed);
                 break;
             case cmdGetPTT:
                 emit getPTT();
@@ -1675,6 +1685,9 @@ void wfmain::runDelayedCommand()
             case cmdDispDisable:
                 emit scopeDisplayDisable();
                 break;
+            case cmdGetSpectrumMode:
+                emit getScopeMode();
+                break;
             case cmdSpecOn:
                 emit spectOutputEnable();
                 break;
@@ -1703,10 +1716,10 @@ void wfmain::runDelayedCommand()
                 emit getATUStatus();
                 break;
             case cmdScopeCenterMode:
-                emit setScopeCenterMode(true);
+                emit setScopeMode(spectModeCenter);
                 break;
             case cmdScopeFixedMode:
-                emit setScopeCenterMode(false);
+                emit setScopeMode(spectModeFixed);
                 break;
             case cmdGetPTT:
                 emit getPTT();
@@ -2000,11 +2013,24 @@ void wfmain::receiveSpectrumData(QByteArray spectrum, double startFreq, double e
 
 void wfmain::receiveSpectrumFixedMode(bool isFixed)
 {
-    ui->scopeCenterModeChk->blockSignals(true);
-    ui->scopeCenterModeChk->setChecked(!isFixed);
-    ui->scopeCenterModeChk->blockSignals(false);
+    qDebug() << __func__ << "Please remove this";
+    (void)isFixed;
 }
 
+void wfmain::receiveSpectrumMode(spectrumMode spectMode)
+{
+    for(int i=0; i < ui->spectrumModeCombo->count(); i++)
+    {
+        if(static_cast<spectrumMode>(ui->spectrumModeCombo->itemData(i).toInt()) == spectMode)
+        {
+            ui->spectrumModeCombo->blockSignals(true);
+            ui->spectrumModeCombo->setCurrentIndex(i);
+            ui->spectrumModeCombo->blockSignals(false);
+        }
+    }
+}
+
+
 void wfmain::handlePlotDoubleClick(QMouseEvent *me)
 {
     double x;
@@ -2314,9 +2340,9 @@ void wfmain::on_fCEbtn_clicked()
     freqTextSelected = false;
 }
 
-void wfmain::on_scopeCenterModeChk_clicked(bool checked)
+void wfmain::on_spectrumModeCombo_currentIndexChanged(int index)
 {
-    emit setScopeCenterMode(checked);
+    emit setScopeMode(static_cast<spectrumMode>(ui->spectrumModeCombo->itemData(index).toInt()));
 }
 
 void wfmain::on_fEnterBtn_clicked()
@@ -2907,10 +2933,10 @@ void wfmain::on_toFixedBtn_clicked()
 {
     emit setScopeFixedEdge(oldLowerFreq, oldUpperFreq, ui->scopeEdgeCombo->currentIndex()+1);
     emit setScopeEdge(ui->scopeEdgeCombo->currentIndex()+1);
-    cmdOutQue.append(cmdScopeFixedMode);
-    delayedCommand->start();
+    issueDelayedCommand(cmdScopeFixedMode);
 }
 
+
 void wfmain::on_connectBtn_clicked()
 {
     this->rigStatus->setText(""); // Clear status
@@ -3410,5 +3436,9 @@ void wfmain::on_debugBtn_clicked()
     // emit getMeters(amTransmitting);
 
     // emit getTSQL();
-    ui->meterWidget->update();
+    qDebug(logSystem()) << "Getting scope mode";
+    emit getScopeMode();
+
 }
+
+
diff --git a/wfmain.h b/wfmain.h
index 82108c3..2e6f6c2 100644
--- a/wfmain.h
+++ b/wfmain.h
@@ -96,7 +96,7 @@ signals:
     void spectOutputDisable();
     void scopeDisplayEnable();
     void scopeDisplayDisable();
-    void setScopeCenterMode(bool centerEnable);
+    void setScopeMode(spectrumMode spectMode);
     void setScopeSpan(char span);
     void setScopeEdge(char edge);
     void setScopeFixedEdge(double startFreq, double endFreq, unsigned char edgeNumber);
@@ -156,6 +156,7 @@ private slots:
     void receiveMode(unsigned char mode, unsigned char filter);
     void receiveSpectrumData(QByteArray spectrum, double startFreq, double endFreq);
     void receiveSpectrumFixedMode(bool isFixed);
+    void receiveSpectrumMode(spectrumMode spectMode);
     void receivePTTstatus(bool pttOn);
     void receiveDataModeStatus(bool dataOn);
     void receiveBandStackReg(float freq, char mode, bool dataOn); // freq, mode, (filter,) datamode
@@ -235,9 +236,6 @@ private slots:
 
     void on_fCEbtn_clicked();
 
-
-    void on_scopeCenterModeChk_clicked(bool checked);
-
     void on_fEnterBtn_clicked();
 
     void on_scopeBWCombo_currentIndexChanged(int index);
@@ -377,6 +375,8 @@ private slots:
 
     void on_tuneLockChk_clicked(bool checked);
 
+    void on_spectrumModeCombo_currentIndexChanged(int index);
+
 private:
     Ui::wfmain *ui;
     QSettings settings;
@@ -475,7 +475,7 @@ private:
     double knobFreqMhz;
     enum cmds {cmdNone, cmdGetRigID, cmdGetRigCIV, cmdGetFreq, cmdGetMode, cmdGetDataMode, cmdSetDataModeOn, cmdSetDataModeOff,
               cmdSpecOn, cmdSpecOff, cmdDispEnable, cmdDispDisable, cmdGetRxGain, cmdGetAfGain,
-              cmdGetSql, cmdGetATUStatus, cmdScopeCenterMode, cmdScopeFixedMode, cmdGetPTT,
+              cmdGetSql, cmdGetATUStatus, cmdGetSpectrumMode, cmdScopeCenterMode, cmdScopeFixedMode, cmdGetPTT,
               cmdGetTxPower, cmdGetMicGain, cmdGetSpectrumRefLevel, cmdGetDuplexMode, cmdGetModInput, cmdGetModDataInput,
               cmdGetCurrentModLevel, cmdStartRegularPolling, cmdStopRegularPolling, cmdGetVdMeter, cmdGetIdMeter,
               cmdGetSMeter, cmdGetPowerMeter, cmdGetALCMeter, cmdGetCompMeter};
@@ -616,6 +616,6 @@ Q_DECLARE_METATYPE(struct rigCapabilities)
 Q_DECLARE_METATYPE(enum rigInput)
 Q_DECLARE_METATYPE(enum duplexMode)
 Q_DECLARE_METATYPE(enum meterKind)
-
+Q_DECLARE_METATYPE(enum spectrumMode)
 
 #endif // WFMAIN_H
diff --git a/wfmain.ui b/wfmain.ui
index 0b895b2..524a72e 100644
--- a/wfmain.ui
+++ b/wfmain.ui
@@ -49,12 +49,15 @@
            <number>0</number>
           </property>
           <item>
-           <widget class="QCheckBox" name="scopeCenterModeChk">
+           <widget class="QLabel" name="label_26">
             <property name="text">
-             <string>Center Mode</string>
+             <string>Spectrum Mode: </string>
             </property>
            </widget>
           </item>
+          <item>
+           <widget class="QComboBox" name="spectrumModeCombo"/>
+          </item>
           <item>
            <widget class="QLabel" name="label_6">
             <property name="text">