From 2c636afa675fd42a3a5d7598532d9c5c4588b195 Mon Sep 17 00:00:00 2001
From: Jon Beniston <jon@beniston.com>
Date: Sat, 26 Aug 2023 14:25:03 +0100
Subject: [PATCH] Add support for RTLSDRBlog V4 with HF upsampler

---
 plugins/samplesource/rtlsdr/rtlsdrgui.cpp   | 2 +-
 plugins/samplesource/rtlsdr/rtlsdrinput.cpp | 9 +++++++--
 plugins/samplesource/rtlsdr/rtlsdrinput.h   | 2 +-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/plugins/samplesource/rtlsdr/rtlsdrgui.cpp b/plugins/samplesource/rtlsdr/rtlsdrgui.cpp
index 654f681ff..b952fc03c 100644
--- a/plugins/samplesource/rtlsdr/rtlsdrgui.cpp
+++ b/plugins/samplesource/rtlsdr/rtlsdrgui.cpp
@@ -208,7 +208,7 @@ void RTLSDRGui::updateFrequencyLimits()
 {
     // values in kHz
     qint64 deltaFrequency = m_settings.m_transverterMode ? m_settings.m_transverterDeltaFrequency/1000 : 0;
-    qint64 minLimit = (m_settings.m_noModMode ? RTLSDRInput::frequencyLowRangeMin : RTLSDRInput::frequencyHighRangeMin) + deltaFrequency;
+    qint64 minLimit = (m_settings.m_noModMode ? RTLSDRInput::frequencyLowRangeMin : m_sampleSource->m_frequencyHighRangeMin) + deltaFrequency;
     qint64 maxLimit = (m_settings.m_noModMode ? RTLSDRInput::frequencyLowRangeMax : RTLSDRInput::frequencyHighRangeMax) + deltaFrequency;
 
     if (m_settings.m_transverterMode)
diff --git a/plugins/samplesource/rtlsdr/rtlsdrinput.cpp b/plugins/samplesource/rtlsdr/rtlsdrinput.cpp
index a2cf99ea5..20bfee715 100644
--- a/plugins/samplesource/rtlsdr/rtlsdrinput.cpp
+++ b/plugins/samplesource/rtlsdr/rtlsdrinput.cpp
@@ -44,7 +44,6 @@ MESSAGE_CLASS_DEFINITION(RTLSDRInput::MsgStartStop, Message)
 
 const quint64 RTLSDRInput::frequencyLowRangeMin = 0UL;
 const quint64 RTLSDRInput::frequencyLowRangeMax = 275000UL;
-const quint64 RTLSDRInput::frequencyHighRangeMin = 24000UL;
 const quint64 RTLSDRInput::frequencyHighRangeMax = 2400000UL;
 const int RTLSDRInput::sampleRateLowRangeMin = 225001;
 const int RTLSDRInput::sampleRateLowRangeMax = 300000;
@@ -158,9 +157,15 @@ bool RTLSDRInput::openDevice()
 
     m_tunerType = rtlsdr_get_tuner_type(m_dev);
 
-    qInfo("RTLSDRInput::openDevice: open: %s %s, SN: %s Tuner: %s", vendor, product, serial, getTunerName());
+    qInfo("RTLSDRInput::openDevice: open: %s %s, SN: %s Tuner: %s", vendor, product, serial, qPrintable(getTunerName()));
     m_deviceDescription = QString("%1 (SN %2)").arg(product).arg(serial);
 
+    if ((vendor == QStringLiteral("RTLSDRBlog")) && (product == QStringLiteral("Blog V4"))) {
+        m_frequencyHighRangeMin = 0;
+    } else {
+        m_frequencyHighRangeMin = 24000UL;
+    }
+
     if ((res = rtlsdr_set_sample_rate(m_dev, 1152000)) < 0)
     {
         qCritical("RTLSDRInput::openDevice: could not set sample rate: 1024k S/s");
diff --git a/plugins/samplesource/rtlsdr/rtlsdrinput.h b/plugins/samplesource/rtlsdr/rtlsdrinput.h
index 76c034954..a0ee55c65 100644
--- a/plugins/samplesource/rtlsdr/rtlsdrinput.h
+++ b/plugins/samplesource/rtlsdr/rtlsdrinput.h
@@ -139,7 +139,7 @@ public:
 
 	static const quint64 frequencyLowRangeMin;
 	static const quint64 frequencyLowRangeMax;
-    static const quint64 frequencyHighRangeMin;
+    quint64 m_frequencyHighRangeMin;
     static const quint64 frequencyHighRangeMax;
 	static const int sampleRateLowRangeMin;
     static const int sampleRateLowRangeMax;