diff --git a/CMake/Modules/GetGitRevisionDescription.cmake b/CMake/Modules/GetGitRevisionDescription.cmake
new file mode 100644
index 000000000..7d75ff0b2
--- /dev/null
+++ b/CMake/Modules/GetGitRevisionDescription.cmake
@@ -0,0 +1,168 @@
+# - Returns a version string from Git
+#
+# These functions force a re-configure on each git commit so that you can
+# trust the values of the variables in your build system.
+#
+#  get_git_head_revision(<source_dir> <refspecvar> <hashvar> [<additional arguments to git describe> ...])
+#
+# Returns the refspec and sha hash of the current head revision
+#
+#  git_describe(<source-dir> <var> [<additional arguments to git describe> ...])
+#
+# Returns the results of git describe on the source tree, and adjusting
+# the output so that it tests false if an error occurs.
+#
+#  git_get_exact_tag(<source-dir> <var> [<additional arguments to git describe> ...])
+#
+# Returns the results of git describe --exact-match on the source tree,
+# and adjusting the output so that it tests false if there was no exact
+# matching tag.
+#
+#  git_local_changes(<source-dir> <var>)
+#
+# Returns either "CLEAN" or "DIRTY" with respect to uncommitted changes.
+# Uses the return code of "git diff-index --quiet HEAD --".
+# Does not regard untracked files.
+#
+# Requires CMake 2.6 or newer (uses the 'function' command)
+#
+# Original Author:
+# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+# Copyright Iowa State University 2009-2010.
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+if(__get_git_revision_description)
+	return()
+endif()
+set(__get_git_revision_description YES)
+
+# We must run the following at "include" time, not at function call time,
+# to find the path to this module rather than the path to a calling list file
+get_filename_component(_gitdescmoddir ${CMAKE_CURRENT_LIST_FILE} PATH)
+
+function(get_git_head_revision _source_dir _refspecvar _hashvar)
+	set(GIT_PARENT_DIR "${_source_dir}")
+	set(GIT_DIR "${GIT_PARENT_DIR}/.git")
+	while(NOT EXISTS "${GIT_DIR}")	# .git dir not found, search parent directories
+		set(GIT_PREVIOUS_PARENT "${GIT_PARENT_DIR}")
+		get_filename_component(GIT_PARENT_DIR ${GIT_PARENT_DIR} PATH)
+		if(GIT_PARENT_DIR STREQUAL GIT_PREVIOUS_PARENT)
+			# We have reached the root directory, we are not in git
+			set(${_refspecvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
+			set(${_hashvar} "GITDIR-NOTFOUND" PARENT_SCOPE)
+			return()
+		endif()
+		set(GIT_DIR "${GIT_PARENT_DIR}/.git")
+	endwhile()
+	# check if this is a submodule
+	if(NOT IS_DIRECTORY ${GIT_DIR})
+		file(READ ${GIT_DIR} submodule)
+		string(REGEX REPLACE "gitdir: (.*)\n$" "\\1" GIT_DIR_RELATIVE ${submodule})
+		get_filename_component(SUBMODULE_DIR ${GIT_DIR} PATH)
+		get_filename_component(GIT_DIR ${SUBMODULE_DIR}/${GIT_DIR_RELATIVE} ABSOLUTE)
+	endif()
+	set(GIT_DATA "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/git-data")
+	if(NOT EXISTS "${GIT_DATA}")
+		file(MAKE_DIRECTORY "${GIT_DATA}")
+	endif()
+
+	if(NOT EXISTS "${GIT_DIR}/HEAD")
+		return()
+	endif()
+	set(HEAD_FILE "${GIT_DATA}/HEAD")
+	configure_file("${GIT_DIR}/HEAD" "${HEAD_FILE}" COPYONLY)
+
+	configure_file("${_gitdescmoddir}/GetGitRevisionDescription.cmake.in"
+		"${GIT_DATA}/grabRef.cmake"
+		@ONLY)
+	include("${GIT_DATA}/grabRef.cmake")
+
+	set(${_refspecvar} "${HEAD_REF}" PARENT_SCOPE)
+	set(${_hashvar} "${HEAD_HASH}" PARENT_SCOPE)
+endfunction()
+
+function(git_describe _source_dir _var)
+	if(NOT GIT_FOUND)
+		find_package(Git QUIET)
+	endif()
+	get_git_head_revision(${_source_dir} refspec hash)
+	if(NOT GIT_FOUND)
+		set(${_var} "GIT-NOTFOUND" PARENT_SCOPE)
+		return()
+	endif()
+	if(NOT hash)
+		set(${_var} "HEAD-HASH-NOTFOUND" PARENT_SCOPE)
+		return()
+	endif()
+
+	# TODO sanitize
+	#if((${ARGN}" MATCHES "&&") OR
+	#	(ARGN MATCHES "||") OR
+	#	(ARGN MATCHES "\\;"))
+	#	message("Please report the following error to the project!")
+	#	message(FATAL_ERROR "Looks like someone's doing something nefarious with git_describe! Passed arguments ${ARGN}")
+	#endif()
+
+	#message(STATUS "Arguments to execute_process: ${ARGN}")
+
+	execute_process(COMMAND
+		"${GIT_EXECUTABLE}"
+		describe
+		${hash}
+		${ARGN}
+		WORKING_DIRECTORY
+		"${_source_dir}"
+		RESULT_VARIABLE
+		res
+		OUTPUT_VARIABLE
+		out
+		ERROR_QUIET
+		OUTPUT_STRIP_TRAILING_WHITESPACE)
+	if(NOT res EQUAL 0)
+		set(out "${out}-${res}-NOTFOUND")
+	endif()
+
+	set(${_var} "${out}" PARENT_SCOPE)
+endfunction()
+
+function(git_get_exact_tag _source_dir _var)
+	git_describe(${_source_dir} out --exact-match ${ARGN})
+	set(${_var} "${out}" PARENT_SCOPE)
+endfunction()
+
+function(git_local_changes _source_dir _var)
+	if(NOT GIT_FOUND)
+		find_package(Git QUIET)
+	endif()
+	get_git_head_revision(${_source_dir} refspec hash)
+	if(NOT GIT_FOUND)
+		set(${_var} "GIT-NOTFOUND" PARENT_SCOPE)
+		return()
+	endif()
+	if(NOT hash)
+		set(${_var} "HEAD-HASH-NOTFOUND" PARENT_SCOPE)
+		return()
+	endif()
+
+	execute_process(COMMAND
+		"${GIT_EXECUTABLE}"
+		diff-index --quiet HEAD --
+		WORKING_DIRECTORY
+		"${_source_dir}"
+		RESULT_VARIABLE
+		res
+		OUTPUT_VARIABLE
+		out
+		ERROR_QUIET
+		OUTPUT_STRIP_TRAILING_WHITESPACE)
+	if(res EQUAL 0)
+		set(${_var} "CLEAN" PARENT_SCOPE)
+	else()
+		set(${_var} "DIRTY" PARENT_SCOPE)
+	endif()
+endfunction()
diff --git a/CMake/Modules/GetGitRevisionDescription.cmake.in b/CMake/Modules/GetGitRevisionDescription.cmake.in
new file mode 100644
index 000000000..6d8b708ef
--- /dev/null
+++ b/CMake/Modules/GetGitRevisionDescription.cmake.in
@@ -0,0 +1,41 @@
+#
+# Internal file for GetGitRevisionDescription.cmake
+#
+# Requires CMake 2.6 or newer (uses the 'function' command)
+#
+# Original Author:
+# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+# Copyright Iowa State University 2009-2010.
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+set(HEAD_HASH)
+
+file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)
+
+string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS)
+if(HEAD_CONTENTS MATCHES "ref")
+	# named branch
+	string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")
+	if(EXISTS "@GIT_DIR@/${HEAD_REF}")
+		configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
+	else()
+		configure_file("@GIT_DIR@/packed-refs" "@GIT_DATA@/packed-refs" COPYONLY)
+		file(READ "@GIT_DATA@/packed-refs" PACKED_REFS)
+		if(${PACKED_REFS} MATCHES "([0-9a-z]*) ${HEAD_REF}")
+			set(HEAD_HASH "${CMAKE_MATCH_1}")
+		endif()
+	endif()
+else()
+	# detached HEAD
+	configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
+endif()
+
+if(NOT HEAD_HASH)
+	file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024)
+	string(STRIP "${HEAD_HASH}" HEAD_HASH)
+endif()
diff --git a/CMake/getsvn.cmake b/CMake/getsvn.cmake
index 754963639..0af52fe28 100644
--- a/CMake/getsvn.cmake
+++ b/CMake/getsvn.cmake
@@ -1,5 +1,7 @@
-find_package (Subversion)
-if (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
+message (STATUS "Checking for revision information")
+if (EXISTS "${SOURCE_DIR}/.svn")
+  message (STATUS "Checking for Subversion revision information")
+  find_package (Subversion QUIET REQUIRED)
   # the FindSubversion.cmake module is part of the standard distribution
   include (FindSubversion)
   # extract working copy information for SOURCE_DIR into MY_XXX variables
@@ -7,9 +9,9 @@ if (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
   message ("${MY_WC_INFO}")
   # determine if the working copy has outstanding changes
   execute_process (COMMAND ${Subversion_SVN_EXECUTABLE} status ${SOURCE_DIR}
-    OUTPUT_FILE "${OUTPUT_DIR}/svn_status.txt"
+    OUTPUT_FILE "${BINARY_DIR}/svn_status.txt"
     OUTPUT_STRIP_TRAILING_WHITESPACE)
-  file (STRINGS "${OUTPUT_DIR}/svn_status.txt" __svn_changes
+  file (STRINGS "${BINARY_DIR}/svn_status.txt" __svn_changes
     REGEX "^[^?].*$"
     )
   if (__svn_changes)
@@ -20,11 +22,11 @@ if (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
     endforeach (__svn_change ${__svn_changes})
   endif (__svn_changes)
   message (STATUS "${SOURCE_DIR} contains a .svn and is revision ${MY_WC_LAST_CHANGED_REV}")
-  # write a file with the SVNVERSION define
-  file (WRITE "${OUTPUT_DIR}/svnversion.h.txt" "#define SVNVERSION ${MY_WC_LAST_CHANGED_REV}\n")
-else (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
-  # try git-svn
-  if (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.git")
+  # write a file with the SCS_VERSION define
+  file (WRITE "${BINARY_DIR}/scs_version.h.txt" "#define SCS_VERSION r${MY_WC_LAST_CHANGED_REV}\n")
+elseif (EXISTS "${SOURCE_DIR}/.git")
+  if (EXISTS "${SOURCE_DIR}/.git/svn/.metadata")  # try git-svn
+    message (STATUS "Checking for Subversion revision information using git-svn")
     include (${SOURCE_DIR}/CMake/Modules/FindGitSubversion.cmake)
     # extract working copy information for SOURCE_DIR into MY_XXX variables
     GitSubversion_WC_INFO (${SOURCE_DIR} MY)
@@ -32,10 +34,10 @@ else (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
     # try and determine if the working copy has outstanding changes
     execute_process (COMMAND ${GIT_EXECUTABLE} --git-dir=${SOURCE_DIR}/.git --work-tree=${SOURCE_DIR} svn dcommit --dry-run
       RESULT_VARIABLE __git_svn_status
-      OUTPUT_FILE "${OUTPUT_DIR}/svn_status.txt"
+      OUTPUT_FILE "${BINARY_DIR}/svn_status.txt"
       ERROR_QUIET
       OUTPUT_STRIP_TRAILING_WHITESPACE)
-    file (STRINGS "${OUTPUT_DIR}/svn_status.txt" __svn_changes
+    file (STRINGS "${BINARY_DIR}/svn_status.txt" __svn_changes
       REGEX "^diff-tree"
       )
     if ((NOT ${__git_svn_status} EQUAL 0) OR __svn_changes)
@@ -43,12 +45,31 @@ else (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
       set (MY_WC_LAST_CHANGED_REV "${MY_WC_LAST_CHANGED_REV}-dirty")
     endif ()
     # write a file with the SVNVERSION define
-    file (WRITE "${OUTPUT_DIR}/svnversion.h.txt" "#define SVNVERSION r${MY_WC_LAST_CHANGED_REV}\n")
-  else (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
-    file (WRITE "${OUTPUT_DIR}/svnversion.h.txt" "#define SVNVERSION\n")
-  endif (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.git")
-endif (Subversion_FOUND AND EXISTS "${SOURCE_DIR}/.svn")
+    file (WRITE "${BINARY_DIR}/scs_version.h.txt" "#define SCS_VERSION r${MY_WC_LAST_CHANGED_REV}\n")
+  else ()
+    #
+    # try git
+    #
+    message (STATUS "Checking for gitrevision information")
+    include (${SOURCE_DIR}/CMake/Modules/GetGitRevisionDescription.cmake)
+    get_git_head_revision (${SOURCE_DIR} GIT_REFSPEC GIT_SHA1)
+    git_local_changes (${SOURCE_DIR} GIT_DIRTY)
+    string (SUBSTRING "${GIT_SHA1}" 0 6 GIT_SHA1)
+    if ("${GIT_DIRTY}" STREQUAL "DIRTY")
+      message (WARNING "Source tree based on revision ${GIT_REFSPEC} ${GIT_SHA1} appears to have local changes")
+      set (GIT_SHA1 "${GIT_SHA1}-dirty")
+      execute_process (COMMAND ${GIT_EXECUTABLE} --git-dir=${SOURCE_DIR}/.git --work-tree=${SOURCE_DIR} status
+	ERROR_QUIET
+	OUTPUT_STRIP_TRAILING_WHITESPACE)
+    endif ()
+    message (STATUS "refspec: ${GIT_REFSPEC} - SHA1: ${GIT_SHA1}")
+    file (WRITE "${BINARY_DIR}/scs_version.h.txt" "#define SCS_VERSION ${GIT_SHA1}\n")
+  else()
+    message (STATUS "No SCS found")
+    file (WRITE "${BINARY_DIR}/scs_version.h.txt" "#define SCS_VERSION\n")
+  endif ()
+endif ()
 
 # copy the file to the final header only if the version changes
 # reduces needless rebuilds
-execute_process (COMMAND ${CMAKE_COMMAND} -E copy_if_different "${OUTPUT_DIR}/svnversion.h.txt" "${OUTPUT_DIR}/svnversion.h")
+execute_process (COMMAND ${CMAKE_COMMAND} -E copy_if_different "${BINARY_DIR}/scs_version.h.txt" "${OUTPUT_DIR}/scs_version.h")
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 03b5dca3a..6a7f0b58b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1488,9 +1488,13 @@ add_custom_target (uninstall
   "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
 
 
-# creates svnversion.h using cmake script
+# creates or updates ${PROJECT_BINARY_DIR}/scs_version.h using cmake script
 add_custom_target (revisiontag
-  COMMAND ${CMAKE_COMMAND} -D SOURCE_DIR=${CMAKE_CURRENT_SOURCE_DIR} -D OUTPUT_DIR=${PROJECT_BINARY_DIR} -P ${CMAKE_CURRENT_SOURCE_DIR}/CMake/getsvn.cmake
+  COMMAND ${CMAKE_COMMAND}
+  -D SOURCE_DIR=${CMAKE_CURRENT_SOURCE_DIR}
+  -D BINARY_DIR=${CMAKE_CURRENT_BINARY_DIR}
+  -D OUTPUT_DIR=${PROJECT_BINARY_DIR}
+  -P ${CMAKE_CURRENT_SOURCE_DIR}/CMake/getsvn.cmake
   COMMENT "Generating Subversion revision information"
   VERBATIM
   )
diff --git a/Versions.cmake b/Versions.cmake
index 890d28652..a34c8d91d 100644
--- a/Versions.cmake
+++ b/Versions.cmake
@@ -1,6 +1,6 @@
 # Version number components
 set (WSJTX_VERSION_MAJOR 1)
-set (WSJTX_VERSION_MINOR 9)
+set (WSJTX_VERSION_MINOR 10)
 set (WSJTX_VERSION_PATCH 0)
-#set (WSJTX_RC 1)		 # release candidate number, comment out or zero for development versions
-set (WSJTX_VERSION_IS_RELEASE 1) # set to 1 for final release build
+set (WSJTX_RC 1)		 # release candidate number, comment out or zero for development versions
+set (WSJTX_VERSION_IS_RELEASE 0) # set to 1 for final release build
diff --git a/revision_utils.cpp b/revision_utils.cpp
index 81b12a6ca..8842e3b4c 100644
--- a/revision_utils.cpp
+++ b/revision_utils.cpp
@@ -5,7 +5,7 @@
 #include <QCoreApplication>
 #include <QRegularExpression>
 
-#include "svnversion.h"
+#include "scs_version.h"
 
 namespace
 {
@@ -13,51 +13,51 @@ namespace
   {
     QString revision;
 
-    // try and match a number
-    QRegularExpression re {R"(^[$:]\w+: (\d+[^$]*)\$$)"};
+    // try and match a number (hexadecimal allowed)
+    QRegularExpression re {R"(^[$:]\w+: (r?[\da-f]+[^$]*)\$$)"};
     auto match = re.match (s);
     if (match.hasMatch ())
       {
-        revision = 'r' + match.captured (1);
+        revision = match.captured (1);
       }
     return revision;
   }
 }
 
-QString revision (QString const& svn_rev_string)
+QString revision (QString const& scs_rev_string)
 {
   QString result;
-  auto revision_from_svn = revision_extract_number (svn_rev_string);
+  auto revision_from_scs = revision_extract_number (scs_rev_string);
 
 #if defined (CMAKE_BUILD)
-  QString svn_info {":Rev: " WSJTX_STRINGIZE (SVNVERSION) " $"};
+  QString scs_info {":Rev: " WSJTX_STRINGIZE (SCS_VERSION) " $"};
 
-  auto revision_from_svn_info = revision_extract_number (svn_info);
-  if (!revision_from_svn_info.isEmpty ())
+  auto revision_from_scs_info = revision_extract_number (scs_info);
+  if (!revision_from_scs_info.isEmpty ())
     {
       // we managed to get the revision number from svn info etc.
-      result = revision_from_svn_info;
+      result = revision_from_scs_info;
     }
-  else if (!revision_from_svn.isEmpty ())
+  else if (!revision_from_scs.isEmpty ())
     {
       // fall back to revision passed in if any
-      result = revision_from_svn;
+      result = revision_from_scs;
     }
   else
     {
       // match anything
       QRegularExpression re {R"(^[$:]\w+: ([^$]*)\$$)"};
-      auto match = re.match (svn_info);
+      auto match = re.match (scs_info);
       if (match.hasMatch ())
         {
           result = match.captured (1);
         }
     }
 #else
-  if (!revision_from_svn.isEmpty ())
+  if (!revision_from_scs.isEmpty ())
     {
       // not CMake build so all we have is revision passed
-      result = revision_from_svn;
+      result = revision_from_scs;
     }
 #endif
   return result.trimmed ();