diff --git a/devices/perseus/deviceperseusscan.cpp b/devices/perseus/deviceperseusscan.cpp
index 70c424cc6..39233f17e 100644
--- a/devices/perseus/deviceperseusscan.cpp
+++ b/devices/perseus/deviceperseusscan.cpp
@@ -57,7 +57,7 @@ void DevicePerseusScan::scan(int nbDevices)
 			uint32_t sigB = (prodid.signature[3]<<16) + prodid.signature[2];
 			uint32_t sigC = (prodid.signature[1]<<16) + prodid.signature[0];
 			std::stringstream ss;
-			ss << prodid.sn << "-" << std::hex << sigA << "-" << sigB << "-" << sigC;
+			ss <<  prodid.sn << "-" << std::hex << sigA << "-" << sigB << "-" << sigC;
 			m_scans.push_back({ss.str(), prodid.sn, deviceIndex});
 			m_serialMap[m_scans.back().m_serial] = &m_scans.back();
 			perseus_close(descr);
diff --git a/plugins/samplesource/perseus/perseusgui.ui b/plugins/samplesource/perseus/perseusgui.ui
index 8c5868d1a..3ef1589f7 100644
--- a/plugins/samplesource/perseus/perseusgui.ui
+++ b/plugins/samplesource/perseus/perseusgui.ui
@@ -29,7 +29,7 @@
    </font>
   </property>
   <property name="windowTitle">
-   <string>AirspyHF</string>
+   <string>Perseus</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <property name="spacing">
diff --git a/plugins/samplesource/perseus/perseusinput.cpp b/plugins/samplesource/perseus/perseusinput.cpp
index ff1296638..7c19c5cf9 100644
--- a/plugins/samplesource/perseus/perseusinput.cpp
+++ b/plugins/samplesource/perseus/perseusinput.cpp
@@ -220,6 +220,16 @@ bool PerseusInput::handleMessage(const Message& message)
 
 bool PerseusInput::openDevice()
 {
+    if (m_perseusDescriptor != 0) {
+        closeDevice();
+    }
+
+    if (!m_sampleFifo.setSize(PERSEUS_NBSAMPLES))
+    {
+        qCritical("PerseusInput::start: could not allocate SampleFifo");
+        return false;
+    }
+
     m_deviceAPI->getSampleSourceSerial();
     int deviceSequence = DevicePerseus::instance().getSequenceFromSerial(m_deviceAPI->getSampleSourceSerial().toStdString());
 
@@ -264,7 +274,8 @@ void PerseusInput::setDeviceCenterFrequency(quint64 freq_hz, const PerseusSettin
     qint64 df = ((qint64)freq_hz * settings.m_LOppmTenths) / 10000000LL;
     freq_hz += df;
 
-    int rc = perseus_set_ddc_center_freq(m_perseusDescriptor, freq_hz, settings.m_wideBand ? 1 : 0);
+    // wideband flag is inverted since parameter is set to enable preselection filters
+    int rc = perseus_set_ddc_center_freq(m_perseusDescriptor, freq_hz, settings.m_wideBand ? 0 : 1);
 
     if (rc < 0) {
         qWarning("PerseusInput::setDeviceCenterFrequency: could not set frequency to %llu Hz: %s", freq_hz, perseus_errorstr());
@@ -297,7 +308,7 @@ bool PerseusInput::applySettings(const PerseusSettings& settings, bool force)
                 qCritical("PerseusInput::applySettings: could not set sample rate index %u (%d S/s): %s",
                         settings.m_devSampleRateIndex, rate, perseus_errorstr());
             }
-            else if (m_perseusDescriptor != 0)
+            else if (m_perseusThread != 0)
             {
                 qDebug("PerseusInput::applySettings: sample rate set to index: %u (%d S/s)", settings.m_devSampleRateIndex, rate);
                 m_perseusThread->setSamplerate(rate);
diff --git a/plugins/samplesource/perseus/perseusthread.cpp b/plugins/samplesource/perseus/perseusthread.cpp
index d602383a3..9bc420749 100644
--- a/plugins/samplesource/perseus/perseusthread.cpp
+++ b/plugins/samplesource/perseus/perseusthread.cpp
@@ -48,7 +48,7 @@ void PerseusThread::startWork()
 
 void PerseusThread::stopWork()
 {
-    qDebug("AirspyThread::stopWork");
+    qDebug("PerseusThread::stopWork");
     m_running = false;
     wait();
 }
@@ -75,6 +75,7 @@ void PerseusThread::run()
 	}
 	else
 	{
+	    qDebug("PerseusThread::run: start Perseus Rx");
 		while (m_running) {
 			sleep(1);
 		}
diff --git a/plugins/samplesource/perseus/perseusthread.h b/plugins/samplesource/perseus/perseusthread.h
index a4ab5540e..81d1c5a8d 100644
--- a/plugins/samplesource/perseus/perseusthread.h
+++ b/plugins/samplesource/perseus/perseusthread.h
@@ -54,8 +54,8 @@ private:
 	unsigned int m_log2Decim;
 	static PerseusThread *m_this;
 
-	Decimators<qint64, TripleByteLE<qint32>, SDR_RX_SAMP_SZ, 16> m_decimators32;
-    Decimators<qint64, TripleByteLE<qint64>, SDR_RX_SAMP_SZ, 16> m_decimators64;
+	Decimators<qint64, TripleByteLE<qint32>, SDR_RX_SAMP_SZ, 24> m_decimators32; // for no decimation (accumulator is int32)
+    Decimators<qint64, TripleByteLE<qint64>, SDR_RX_SAMP_SZ, 24> m_decimators64; // for actual decimation (accumulator is int64)
 
 	void run();
 	void callback(const uint8_t* buf, qint32 len); // inner call back
diff --git a/udev-rules/95-perseus.rules b/udev-rules/95-perseus.rules
new file mode 100644
index 000000000..3cf1f885d
--- /dev/null
+++ b/udev-rules/95-perseus.rules
@@ -0,0 +1 @@
+ATTR{idVendor}=="04b4", ATTR{idProduct}=="325c", MODE="666", GROUP="plugdev"
diff --git a/udev-rules/install.sh b/udev-rules/install.sh
index b4533faec..f4b99e220 100755
--- a/udev-rules/install.sh
+++ b/udev-rules/install.sh
@@ -9,6 +9,7 @@ cp 64-limesuite.rules /etc/udev/rules.d/
 cp 53-adi-plutosdr-usb.rules /etc/udev/rules.d/
 cp rtl-sdr.rules /etc/udev/rules.d/
 cp mirisdr.rules /etc/udev/rules.d/
+cp 95-perseus.rules /etc/udev/rules.d/
 
 udevadm control --reload-rules
 udevadm trigger