diff --git a/CMakeLists.txt b/CMakeLists.txt
index c5041782f..d88a3f7ad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -337,6 +337,7 @@ set (wsjtx_CXXSRCS
   )
 
 set (wsjt_CXXSRCS
+  Logger.cpp
   lib/crc10.cpp
   lib/crc13.cpp
   lib/crc14.cpp
@@ -749,6 +750,7 @@ set (all_C_and_CXXSRCS
   )
 
 set (TOP_LEVEL_RESOURCES
+  wsjtx_log_config.ini
   icons/Darwin/wsjtx.iconset/icon_128x128.png
   contrib/gpl-v3-logo.svg
   artwork/splash.png
@@ -880,7 +882,7 @@ find_program(ETAGS etags)
 #   set (BOOST_ROOT ${PROJECT_SOURCE_DIR}/boost)
 # endif ()
 set (Boost_USE_STATIC_LIBS OFF)
-find_package (Boost 1.63 REQUIRED COMPONENTS log_setup)
+find_package (Boost 1.63 REQUIRED COMPONENTS log_setup log)
 
 #
 # OpenMP
@@ -1219,6 +1221,7 @@ endif (WIN32)
 
 # build a library of package functionality (without and optionally with OpenMP support)
 add_library (wsjt_cxx STATIC ${wsjt_CSRCS} ${wsjt_CXXSRCS})
+target_link_libraries (wsjt_cxx Boost::log_setup)
 
 # build an OpenMP variant of the Fortran library routines
 add_library (wsjt_fort STATIC ${wsjt_FSRCS})
@@ -1257,7 +1260,7 @@ target_link_libraries (qcp Qt5::Widgets Qt5::PrintSupport)
 add_library (wsjt_qt STATIC ${wsjt_qt_CXXSRCS} ${wsjt_qt_GENUISRCS} ${GENAXSRCS})
 # set wsjtx_udp exports to static variants
 target_compile_definitions (wsjt_qt PUBLIC UDP_STATIC_DEFINE)
-target_link_libraries (wsjt_qt Boost::log_setup qcp Qt5::Widgets Qt5::Network Qt5::Sql)
+target_link_libraries (wsjt_qt Boost::log qcp Qt5::Widgets Qt5::Network Qt5::Sql)
 target_include_directories (wsjt_qt BEFORE PRIVATE ${hamlib_INCLUDE_DIRS})
 if (WIN32)
   target_link_libraries (wsjt_qt Qt5::AxContainer Qt5::AxBase)
diff --git a/Logger.cpp b/Logger.cpp
new file mode 100644
index 000000000..211cac17c
--- /dev/null
+++ b/Logger.cpp
@@ -0,0 +1,189 @@
+#include "Logger.hpp"
+
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/log/core.hpp>
+#include <boost/log/common.hpp>
+#include <boost/log/sinks.hpp>
+#include <boost/log/expressions.hpp>
+#include <boost/log/expressions/keyword.hpp>
+#include <boost/log/attributes.hpp>
+#include <boost/log/utility/exception_handler.hpp>
+#include <boost/log/utility/setup/console.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+#include <boost/log/utility/setup/filter_parser.hpp>
+#include <boost/log/utility/setup/formatter_parser.hpp>
+#include <boost/log/utility/setup/from_stream.hpp>
+#include <boost/log/utility/setup/settings.hpp>
+#include <boost/log/sinks/sync_frontend.hpp>
+#include <boost/log/sinks/text_ostream_backend.hpp>
+#include <boost/log/sinks/debug_output_backend.hpp>
+#include <boost/log/support/date_time.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/make_shared.hpp>
+ 
+#include <fstream>
+#include <string>
+
+namespace logger = boost::log;
+namespace srcs = logger::sources;
+namespace sinks = logger::sinks;
+namespace keywords = logger::keywords;
+namespace expr = logger::expressions;
+namespace attrs = logger::attributes;
+namespace ptime = boost::posix_time;
+
+namespace Logger
+{
+  BOOST_LOG_GLOBAL_LOGGER_CTOR_ARGS (sys,
+                                     srcs::severity_channel_logger_mt<logger::trivial::severity_level>,
+                                     (keywords::channel = "SYSLOG"));
+  BOOST_LOG_GLOBAL_LOGGER_CTOR_ARGS (data,
+                                     srcs::severity_channel_logger_mt<logger::trivial::severity_level>,
+                                     (keywords::channel = "DATALOG"));
+
+  namespace
+  {
+    // Custom formatter factory to add TimeStamp format support in config ini file.
+    // Allows %TimeStamp(format=\"%Y.%m.%d %H:%M:%S.%f\")% to be used in ini config file for property Format.
+    class TimeStampFormatterFactory
+      : public logger::basic_formatter_factory<char, ptime::ptime>
+    {
+    public:
+      formatter_type create_formatter (logger::attribute_name const& name, args_map const& args)
+      {
+        args_map::const_iterator it = args.find ("format");
+        if (it != args.end ())
+          {
+            return expr::stream 
+              << expr::format_date_time<ptime::ptime>
+              (
+               expr::attr<ptime::ptime> (name), it->second
+               );
+          }
+        else
+          {
+            return expr::stream 
+              << expr::attr<ptime::ptime> (name);
+          }
+      }
+    };
+
+    // Custom formatter factory to add Uptime format support in config ini file.
+    // Allows %Uptime(format=\"%O:%M:%S.%f\")% to be used in ini config file for property Format.
+    // attrs::timer value type is ptime::time_duration
+    class UptimeFormatterFactory
+      : public logger::basic_formatter_factory<char, ptime::time_duration>
+    {
+    public:
+      formatter_type create_formatter (logger::attribute_name const& name, args_map const& args)
+      {
+        args_map::const_iterator it = args.find ("format");
+        if (it != args.end ())
+          {
+            return expr::stream
+              << expr::format_date_time<ptime::time_duration>
+              (
+               expr::attr<ptime::time_duration> (name), it->second
+               );
+          }
+        else
+          {
+            return expr::stream
+              << expr::attr<ptime::time_duration> (name);
+          }
+      }
+    };
+
+    class CommonInitialization
+    {
+    public:
+      CommonInitialization ()
+      {
+        // Disable all exceptions
+        logger::core::get ()->set_exception_handler (logger::make_exception_suppressor ());
+ 
+        // Add common attributes: LineID, TimeStamp, ProcessID, ThreadID
+        logger::add_common_attributes ();
+        // Add boost log timer as global attribute Uptime
+        logger::core::get ()->add_global_attribute ("Uptime", attrs::timer ());
+        // Allows %Severity% to be used in ini config file for property Filter.
+        logger::register_simple_filter_factory<logger::trivial::severity_level, char> ("Severity");
+        // Allows %Severity% to be used in ini config file for property Format.
+        logger::register_simple_formatter_factory<logger::trivial::severity_level, char> ("Severity");
+        // Allows %TimeStamp(format=\"%Y.%m.%d %H:%M:%S.%f\")% to be used in ini config file for property Format.
+        logger::register_formatter_factory ("TimeStamp", boost::make_shared<TimeStampFormatterFactory> ());
+        // Allows %Uptime(format=\"%O:%M:%S.%f\")% to be used in ini config file for property Format.
+        logger::register_formatter_factory ("Uptime", boost::make_shared<UptimeFormatterFactory> ());
+      }
+      ~CommonInitialization ()
+      {
+        // Indicate start of logging
+        LOG_INFO ("Log Start");
+      }
+    };
+  }
+
+  void init ()
+  {
+    CommonInitialization ci;
+    // auto sink = boost::make_shared<sinks::synchronous_sink<sinks::debug_output_backend>> ();
+    // sink->set_filter (expr::is_debugger_present ());
+    // logger::core::get ()->add_sink (sink);
+  }
+
+  void init_from_config (std::istream& stream)
+  {
+    CommonInitialization ci;
+    try
+      {
+        // Still can throw even with the exception suppressor above.
+        logger::init_from_stream (stream);
+      }
+    catch (std::exception& e)
+      {
+        std::string err = "Caught exception initializing boost logging: ";
+        err += e.what ();
+        // Since we cannot be sure of boost log state, output to cerr and cout.
+        std::cerr << "ERROR: " << err << std::endl;
+        std::cout << "ERROR: " << err << std::endl;
+        LOG_ERROR (err);
+      }
+  }
+
+  void disable ()
+  {
+    logger::core::get ()->set_logging_enabled (false);
+  }
+
+  void add_datafile_log (std::string const& log_file_name)
+  {
+    // Create a text file sink
+    boost::shared_ptr<sinks::text_ostream_backend> backend
+      (
+       new sinks::text_ostream_backend()
+       );
+    backend->add_stream (boost::shared_ptr<std::ostream> (new std::ofstream (log_file_name)));
+     
+    // Flush after each log record
+    backend->auto_flush (true);
+     
+    // Create a sink for the backend
+    typedef sinks::synchronous_sink<sinks::text_ostream_backend> sink_t;
+    boost::shared_ptr<sink_t> sink (new sink_t (backend));
+     
+    // The log output formatter
+    sink->set_formatter (expr::format ("[%1%][%2%] %3%")
+                         % expr::attr<ptime::ptime> ("TimeStamp")
+                         % logger::trivial::severity
+                         % expr::smessage
+                         );
+     
+    // Filter by severity and by DATALOG channel
+    sink->set_filter (logger::trivial::severity >= logger::trivial::info &&
+                      expr::attr<std::string> ("Channel") == "DATALOG");
+     
+    // Add it to the core
+    logger::core::get ()->add_sink (sink);
+  }
+}
diff --git a/Logger.hpp b/Logger.hpp
new file mode 100644
index 000000000..f5af4094d
--- /dev/null
+++ b/Logger.hpp
@@ -0,0 +1,57 @@
+#ifndef LOGGER_HPP__
+#define LOGGER_HPP__
+
+#include <boost/log/trivial.hpp>
+#include <boost/log/sources/global_logger_storage.hpp>
+#include <boost/log/sources/severity_channel_logger.hpp>
+#include <boost/log/attributes/mutable_constant.hpp>
+#include <boost/log/utility/manipulators/add_value.hpp>
+#include <iosfwd>
+#include <string>
+
+namespace Logger
+{
+  BOOST_LOG_GLOBAL_LOGGER (sys,
+                           boost::log::sources::severity_channel_logger_mt<boost::log::trivial::severity_level>);
+  BOOST_LOG_GLOBAL_LOGGER (data,
+                           boost::log::sources::severity_channel_logger_mt<boost::log::trivial::severity_level>);
+
+  // trivial logging to console
+  void init ();
+
+  // define logger(s) and sinks from a configuration stream
+  void init_from_config (std::istream& config_stream);
+
+  // disable logging - useful for unit testing etc.
+  void disable ();
+
+  // add a new file sink for LOG_DATA_* for Severity >= INFO
+  // this file sink will be used alongside any configured above
+  void add_data_file_log (std::string const& log_file_name);
+}
+
+#define LOG_LOG_LOCATION(LOGGER, LEVEL, ARG)                  \
+  BOOST_LOG_SEV (LOGGER, boost::log::trivial::LEVEL)          \
+  << boost::log::add_value ("Line", __LINE__)                 \
+  << boost::log::add_value ("File", __FILE__)                 \
+  << boost::log::add_value ("Function", __FUNCTION__) << ARG;
+ 
+/// System Log macros.
+/// TRACE < DEBUG < INFO < WARN < ERROR < FATAL
+#define LOG_TRACE(ARG) LOG_LOG_LOCATION (Logger::sys::get(), trace, ARG);
+#define LOG_DEBUG(ARG) LOG_LOG_LOCATION (Logger::sys::get(), debug, ARG);
+#define LOG_INFO(ARG)  LOG_LOG_LOCATION (Logger::sys::get(), info, ARG);
+#define LOG_WARN(ARG)  LOG_LOG_LOCATION (Logger::sys::get(), warning, ARG);
+#define LOG_ERROR(ARG) LOG_LOG_LOCATION (Logger::sys::get(), error, ARG);
+#define LOG_FATAL(ARG) LOG_LOG_LOCATION (Logger::sys::get(), fatal, ARG);
+ 
+/// Data Log macros. Does not include LINE, FILE, FUNCTION.
+/// TRACE < DEBUG < INFO < WARN < ERROR < FATAL
+#define LOG_DATA_TRACE(ARG) BOOST_LOG_SEV (Logger::data::get(), boost::log::trivial::trace) << ARG
+#define LOG_DATA_DEBUG(ARG) BOOST_LOG_SEV (Logger::data::get(), boost::log::trivial::debug) << ARG
+#define LOG_DATA_INFO(ARG)  BOOST_LOG_SEV (Logger::data::get(), boost::log::trivial::info) << ARG
+#define LOG_DATA_WARN(ARG)  BOOST_LOG_SEV (Logger::data::get(), boost::log::trivial::warning) << ARG
+#define LOG_DATA_ERROR(ARG) BOOST_LOG_SEV (Logger::data::get(), boost::log::trivial::error) << ARG
+#define LOG_DATA_FATAL(ARG) BOOST_LOG_SEV (Logger::data::get(), boost::log::trivial::fatal) << ARG
+
+#endif
diff --git a/main.cpp b/main.cpp
index a3cb166a4..6a7651ad2 100644
--- a/main.cpp
+++ b/main.cpp
@@ -28,8 +28,10 @@
 #include <QSqlQuery>
 #include <QSqlError>
 
+#include "Logger.hpp"
 #include "revision_utils.hpp"
 #include "MetaDataRegistry.hpp"
+#include "qt_helpers.hpp"
 #include "L10nLoader.hpp"
 #include "SettingsGroup.hpp"
 #include "TraceFile.hpp"
diff --git a/qt_helpers.hpp b/qt_helpers.hpp
index aae8c5f07..1d21789b4 100644
--- a/qt_helpers.hpp
+++ b/qt_helpers.hpp
@@ -2,6 +2,7 @@
 #define QT_HELPERS_HPP_
 
 #include <stdexcept>
+#include <ostream>
 
 #include <QString>
 #include <QChar>
@@ -57,6 +58,18 @@ Qt::SplitBehaviorFlags const SkipEmptyParts = Qt::SkipEmptyParts;
 QString::SplitBehavior const SkipEmptyParts = QString::SkipEmptyParts;
 #endif
 
+inline
+std::ostream& operator << (std::ostream& os, QByteArray const& b)
+{
+  return os << b.constData ();
+}
+
+inline
+std::ostream& operator << (std::ostream& os, QString const& s)
+{
+  return os << s.toStdString ();
+}
+
 inline
 void throw_qstring (QString const& qs)
 {
diff --git a/wsjtx_log_config.ini b/wsjtx_log_config.ini
new file mode 100644
index 000000000..0a508d63e
--- /dev/null
+++ b/wsjtx_log_config.ini
@@ -0,0 +1,90 @@
+#
+# See http://www.boost.org/doc/libs/1_60_0/libs/log/doc/html/log/detailed/utilities.html#log.detailed.utilities.setup.filter_formatter
+#
+# Many of the property values have to be in quotes, best to just use quotes for all of them.
+#
+# SYSLOG is the System Log File for logging standard 'debug' type info.
+# DATALOG is the Data log File for logging modification to business data.
+#
+[Core]
+# Set DisableLogging to true to disable all logging.
+DisableLogging="false"
+
+# SYSLOG - system log
+[Sinks.SYSLOG]
+Destination="TextFile"
+# If Asynchronous true then thread dedicated to writing to log, otherwise blocks main thread to write.
+Asynchronous="true"
+# If AutoFlush is true then non-buffered output
+AutoFlush="true"
+Append="true"
+# Line Formats available: TimeStamp, Uptime, Severity, LineID (counter), ProcessID, ThreadID, Line, File, Function
+# TimeStamp and Uptime support boost date time format:
+#    http://www.boost.org/doc/libs/1_60_0/doc/html/date_time/date_time_io.html#date_time.format_flags
+#Format="[%TimeStamp(format=\"%Y-%m-%d %H:%M:%S.%f\")%][%Uptime(format=\"%O:%M:%S.%f\")%][%Severity%] %File%(%Line%) %Function%: %Message%"
+Format="[%TimeStamp(format=\"%Y-%m-%d %H:%M:%S.%f\")%][%Severity%\t] %Message%"
+# Target directory in which rotated files will be stored.
+Target="${AppLocalDataLocation}/old_logs"
+# FileName pattern to use. %N is a counter for files.
+FileName="${AppLocalDataLocation}/wsjtx_syslog.log"
+TargetFileName="wsjtx_syslog_%5N.log"
+# RotationSize in bytes, File size, in bytes, upon which file rotation will be performed.
+# Time based rotation also available via RotationInterval and RotationTimePoint see boost log docs.
+RotationSize="1048576"
+EnableFinalRotation="false"
+# Matching used so that only files matching FileName pattern are deleted.
+ScanForFiles="Matching"
+# MaxSize - Total size of files in the target directory in bytes upon which the oldest file will be deleted.
+#MaxSize=100485760
+# MinFreeSpace - Minimum free space in the Target directory in bytes. Above this value oldest file is deleted.
+#MinFreeSpace=1485760
+MaxFiles="10"
+# Specify level of log, options are: trace, debug, info, warning, error, fatal
+# Since Channel not part of filter all log output will be included.
+# If only SYSLOG logging desired, change to: Filter="%Severity% >= trace & %Channel% matches \"SYSLOG\""
+Filter="%Severity% >= warning"
+     
+# DATALOG - data log
+[Sinks.DATALOG]
+Destination="TextFile"
+# If Asynchronous true then thread dedicated to writing to log, otherwise blocks main thread to write.
+Asynchronous="true"
+# If AutoFlush is true then non-buffered output
+AutoFlush="true"
+Append="true"
+# Line Formats available: TimeStamp, Uptime, Severity, LineID (counter), ProcessID, ThreadID
+# TimeStamp and Uptime support boost date time format:
+#    http://www.boost.org/doc/libs/1_60_0/doc/html/date_time/date_time_io.html#date_time.format_flags
+Format="[%TimeStamp(format=\"%Y-%m-%d %H:%M:%S.%f\")%][%Uptime(format=\"%O:%M:%S.%f\")%][%Severity%] %Message%"
+# Target directory in which rotated files will be stored.
+Target="${AppLocalDataLocation}/old_logs"
+# FileName pattern to use. %N is a counter for files.
+FileName="${AppLocalDataLocation}/wsjtx_datalog.log"
+TargetFileName="wsjtx_datalog_%5N.log"
+# RotationSize in bytes, File size, in bytes, upon which file rotation will be performed.
+# Time based rotation also available via RotationInterval and RotationTimePoint see boost log docs.
+RotationSize="1048576"
+EnableFinalRotation="false"
+# Matching used so that only files matching FileName pattern are deleted.
+ScanForFiles="Matching"
+# MaxSize - Total size of files in the target directory in bytes upon which the oldest file will be deleted.
+#MaxSize=100485760
+# MinFreeSpace - Minimum free space in the Target directory in bytes. Above this value oldest file is deleted.
+#MinFreeSpace=1485760
+MaxFiles="10"
+# Specify level of log, options are: trace, debug, info, warning, error, fatal
+# Specify Channel otherwise all log output will be included.
+Filter="%Severity% >= info & %Channel% matches \"DATALOG\""
+     
+# Console log, logs both DATALOG and SYSLOG
+[Sinks.Console]
+# Remove the following lines to disable console logging
+Destination="Console"
+# If AutoFlush is true then non-buffered output
+AutoFlush="true"
+# Line Formats available: TimeStamp, Uptime, Severity, LineID (counter), ProcessID, ThreadID
+# TimeStamp and Uptime support boost date time format:
+#    http://www.boost.org/doc/libs/1_60_0/doc/html/date_time/date_time_io.html#date_time.format_flags
+Format="[%TimeStamp(format=\"%Y-%m-%d %H:%M:%S.%f\")%][%Uptime(format=\"%O:%M:%S.%f\")%][%Severity%] - %Message%"
+# Specify level of log, options are: trace, debug, info, warning, error, fatal
+Filter="%Severity% >= warning"