From 4b89ac3360f5678f19ba3d9f577bb058387552f9 Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Thu, 5 Jan 2017 11:37:57 +0100
Subject: [PATCH] WFM modulator: do not go below 96 kHz for the channelizer
 sample rate. Attempt to fix CW problem

---
 plugins/channeltx/modwfm/wfmmod.cpp    | 2 ++
 plugins/channeltx/modwfm/wfmmodgui.cpp | 4 +---
 sdrbase/dsp/cwkeyer.h                  | 1 +
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/plugins/channeltx/modwfm/wfmmod.cpp b/plugins/channeltx/modwfm/wfmmod.cpp
index 1ade3aee9..e002b7701 100644
--- a/plugins/channeltx/modwfm/wfmmod.cpp
+++ b/plugins/channeltx/modwfm/wfmmod.cpp
@@ -82,6 +82,7 @@ WFMMod::WFMMod() :
     m_cwSmoother.setNbFadeSamples(m_config.m_outputSampleRate / 250); // 4 ms
     m_cwKeyer.setWPM(13);
     m_cwKeyer.setMode(CWKeyer::CWNone);
+    m_cwKeyer.reset();
 }
 
 WFMMod::~WFMMod()
@@ -426,6 +427,7 @@ void WFMMod::apply()
     {
         m_cwKeyer.setSampleRate(m_config.m_outputSampleRate);
         m_cwSmoother.setNbFadeSamples(m_config.m_outputSampleRate / 250); // 4 ms
+        m_cwKeyer.reset();
     }
 
 	m_running.m_outputSampleRate = m_config.m_outputSampleRate;
diff --git a/plugins/channeltx/modwfm/wfmmodgui.cpp b/plugins/channeltx/modwfm/wfmmodgui.cpp
index 111f5ce43..529027d56 100644
--- a/plugins/channeltx/modwfm/wfmmodgui.cpp
+++ b/plugins/channeltx/modwfm/wfmmodgui.cpp
@@ -42,9 +42,7 @@ const int WFMModGUI::m_nbRfBW = 14;
 
 int WFMModGUI::requiredBW(int rfBW)
 {
-    if (rfBW <= 48000)
-        return 48000;
-    else if (rfBW < 100000)
+    if (rfBW < 96000)
         return 96000;
     else
         return 384000;
diff --git a/sdrbase/dsp/cwkeyer.h b/sdrbase/dsp/cwkeyer.h
index a35dbf042..1b29aba02 100644
--- a/sdrbase/dsp/cwkeyer.h
+++ b/sdrbase/dsp/cwkeyer.h
@@ -66,6 +66,7 @@ public:
     void setText(const QString& text);
     void setMode(CWMode mode);
     void setLoop(bool loop) { m_loop = loop; }
+    void reset() { m_keyIambicState = KeySilent; }
 
     int getSample();
     bool eom();