diff --git a/grc/CMakeLists.txt b/grc/CMakeLists.txt
index 2b94539..47dfc89 100644
--- a/grc/CMakeLists.txt
+++ b/grc/CMakeLists.txt
@@ -24,5 +24,6 @@
 add_subdirectory(flow_control)
 add_subdirectory(misc_utils)
 install(FILES
-    gsm_block_tree.xml DESTINATION share/gnuradio/grc/blocks
+    gsm_block_tree.xml
+    grgsm_msg_to_tag.xml DESTINATION share/gnuradio/grc/blocks
 )
diff --git a/grc/grgsm_msg_to_tag.xml b/grc/grgsm_msg_to_tag.xml
new file mode 100644
index 0000000..fab2c6c
--- /dev/null
+++ b/grc/grgsm_msg_to_tag.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0"?>
+<block>
+  <name>msg_to_tag</name>
+  <key>grgsm_msg_to_tag</key>
+  <category>grgsm</category>
+  <import>import grgsm</import>
+  <make>grgsm.msg_to_tag()</make>
+  <!-- Make one 'param' node for every Parameter you want settable from the GUI.
+       Sub-nodes:
+       * name
+       * key (makes the value accessible as $keyname, e.g. in the make node)
+       * type -->
+  <param>
+    <name>...</name>
+    <key>...</key>
+    <type>...</type>
+  </param>
+
+  <!-- Make one 'sink' node per input. Sub-nodes:
+       * name (an identifier for the GUI)
+       * type
+       * vlen
+       * optional (set to 1 for optional inputs) -->
+  <sink>
+    <name>in</name>
+    <type><!-- e.g. int, float, complex, byte, short, xxx_vector, ...--></type>
+  </sink>
+
+  <!-- Make one 'source' node per output. Sub-nodes:
+       * name (an identifier for the GUI)
+       * type
+       * vlen
+       * optional (set to 1 for optional inputs) -->
+  <source>
+    <name>out</name>
+    <type><!-- e.g. int, float, complex, byte, short, xxx_vector, ...--></type>
+  </source>
+</block>
diff --git a/include/grgsm/CMakeLists.txt b/include/grgsm/CMakeLists.txt
index e9f6cc2..50788ae 100644
--- a/include/grgsm/CMakeLists.txt
+++ b/include/grgsm/CMakeLists.txt
@@ -24,7 +24,7 @@
     plotting.hpp
     api.h
     gsmtap.h
-    DESTINATION include/grgsm
+    msg_to_tag.h DESTINATION include/grgsm
 )
 
 add_subdirectory(decoding)
diff --git a/include/grgsm/msg_to_tag.h b/include/grgsm/msg_to_tag.h
new file mode 100644
index 0000000..3d63460
--- /dev/null
+++ b/include/grgsm/msg_to_tag.h
@@ -0,0 +1,58 @@
+/* -*- c++ -*- */
+/* @file
+ * @author Piotr Krysik <ptrkrysik@gmail.com>
+ * @section LICENSE
+ * 
+ * Gr-gsm is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * Gr-gsm is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with gr-gsm; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ * 
+ */
+
+
+#ifndef INCLUDED_GRGSM_MSG_TO_TAG_H
+#define INCLUDED_GRGSM_MSG_TO_TAG_H
+
+#include <grgsm/api.h>
+#include <gnuradio/sync_block.h>
+
+namespace gr {
+  namespace grgsm {
+
+    /*!
+     * \brief <+description of block+>
+     * \ingroup grgsm
+     *
+     */
+    class GRGSM_API msg_to_tag : virtual public gr::sync_block
+    {
+     public:
+      typedef boost::shared_ptr<msg_to_tag> sptr;
+
+      /*!
+       * \brief Return a shared_ptr to a new instance of grgsm::msg_to_tag.
+       *
+       * To avoid accidental use of raw pointers, grgsm::msg_to_tag's
+       * constructor is in a private implementation
+       * class. grgsm::msg_to_tag::make is the public interface for
+       * creating new instances.
+       */
+      static sptr make();
+    };
+
+  } // namespace grgsm
+} // namespace gr
+
+#endif /* INCLUDED_GRGSM_MSG_TO_TAG_H */
+
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 723ecce..3ce05f8 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -65,6 +65,7 @@
     qa_utils/message_source_impl.cc
     qa_utils/message_sink_impl.cc
     decryption/decryption_impl.cc
+    msg_to_tag_impl.cc
 )
 
 
diff --git a/lib/msg_to_tag_impl.cc b/lib/msg_to_tag_impl.cc
new file mode 100644
index 0000000..eb0fc13
--- /dev/null
+++ b/lib/msg_to_tag_impl.cc
@@ -0,0 +1,80 @@
+/* -*- c++ -*- */
+/* @file
+ * @author Piotr Krysik <ptrkrysik@gmail.com>
+ * @section LICENSE
+ * 
+ * Gr-gsm is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * Gr-gsm is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with gr-gsm; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ * 
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gnuradio/io_signature.h>
+//#include <gnuradio/msg_queue.h>
+#include "msg_to_tag_impl.h"
+
+namespace gr {
+  namespace grgsm {
+
+    msg_to_tag::sptr
+    msg_to_tag::make()
+    {
+      return gnuradio::get_initial_sptr
+        (new msg_to_tag_impl());
+    }
+
+//    void msg_to_tag_impl::queue_msg(pmt::pmt_t msg){
+//        
+//    }
+
+    /*
+     * The private constructor
+     */
+    msg_to_tag_impl::msg_to_tag_impl()
+      : gr::sync_block("msg_to_tag",
+              gr::io_signature::make(1, 1, sizeof(gr_complex)),
+              gr::io_signature::make(1, 1, sizeof(gr_complex)))
+    {
+        message_port_register_in(pmt::mp("msg"));
+//        set_msg_handler(pmt::mp("msg"), boost::bind(&msg_to_tag::queue_msg, this, _1));
+    }
+
+    /*
+     * Our virtual destructor.
+     */
+    msg_to_tag_impl::~msg_to_tag_impl()
+    {
+    }
+
+    int
+    msg_to_tag_impl::work(int noutput_items,
+        gr_vector_const_void_star &input_items,
+        gr_vector_void_star &output_items)
+    {
+      const gr_complex *in = (const gr_complex *) input_items[0];
+      gr_complex *out = (gr_complex *) output_items[0];
+
+      // Do <+signal processing+>
+      memcpy(out, in, sizeof(gr_complex)*noutput_items);
+      // Tell runtime system how many output items we produced.
+      return noutput_items;
+    }
+
+  } /* namespace grgsm */
+} /* namespace gr */
+
diff --git a/lib/msg_to_tag_impl.h b/lib/msg_to_tag_impl.h
new file mode 100644
index 0000000..e761d3e
--- /dev/null
+++ b/lib/msg_to_tag_impl.h
@@ -0,0 +1,50 @@
+/* -*- c++ -*- */
+/* @file
+ * @author Piotr Krysik <ptrkrysik@gmail.com>
+ * @section LICENSE
+ * 
+ * Gr-gsm is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * Gr-gsm is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with gr-gsm; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ * 
+ */
+
+#ifndef INCLUDED_GRGSM_MSG_TO_TAG_IMPL_H
+#define INCLUDED_GRGSM_MSG_TO_TAG_IMPL_H
+
+#include <grgsm/msg_to_tag.h>
+
+namespace gr {
+  namespace grgsm {
+
+    class msg_to_tag_impl : public msg_to_tag
+    {
+     private:
+      // Nothing to declare in this block.
+
+     public:
+      msg_to_tag_impl();
+      ~msg_to_tag_impl();
+
+      // Where all the action really happens
+      int work(int noutput_items,
+         gr_vector_const_void_star &input_items,
+         gr_vector_void_star &output_items);
+    };
+
+  } // namespace grgsm
+} // namespace gr
+
+#endif /* INCLUDED_GRGSM_MSG_TO_TAG_IMPL_H */
+
diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 8fc48de..aa77ff1 100644
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -62,3 +62,4 @@
 GR_ADD_TEST(qa_burst_fnr_filter ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_burst_fnr_filter.py)
 GR_ADD_TEST(qa_dummy_burst_filter ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_dummy_burst_filter.py)
 GR_ADD_TEST(qa_arfcn ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_arfcn.py)
+GR_ADD_TEST(qa_msg_to_tag ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_msg_to_tag.py)
diff --git a/python/qa_msg_to_tag.py b/python/qa_msg_to_tag.py
new file mode 100755
index 0000000..eb206b1
--- /dev/null
+++ b/python/qa_msg_to_tag.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# @file
+# @author Piotr Krysik <ptrkrysik@gmail.com>
+# @section LICENSE
+# 
+# Gr-gsm is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# Gr-gsm is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with gr-gsm; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+# 
+
+from gnuradio import gr, gr_unittest
+from gnuradio import blocks
+import grgsm_swig as grgsm
+
+class qa_msg_to_tag (gr_unittest.TestCase):
+
+    def setUp (self):
+        self.tb = gr.top_block ()
+
+    def tearDown (self):
+        self.tb = None
+
+    def test_001_t (self):
+        # set up fg
+        self.tb.run ()
+        # check data
+
+
+if __name__ == '__main__':
+    gr_unittest.run(qa_msg_to_tag, "qa_msg_to_tag.xml")
diff --git a/swig/grgsm_swig.i b/swig/grgsm_swig.i
index dc2718e..81a5942 100644
--- a/swig/grgsm_swig.i
+++ b/swig/grgsm_swig.i
@@ -37,6 +37,7 @@
 #include "grgsm/qa_utils/message_sink.h"
 #include "grgsm/misc_utils/message_file_sink.h"
 #include "grgsm/misc_utils/message_file_source.h"
+#include "grgsm/msg_to_tag.h"
 %}
 
 %include "grgsm/receiver/receiver.h"
@@ -103,3 +104,5 @@
 GR_SWIG_BLOCK_MAGIC2(gsm, message_source);
 %include "grgsm/qa_utils/message_sink.h"
 GR_SWIG_BLOCK_MAGIC2(gsm, message_sink);
+%include "grgsm/msg_to_tag.h"
+GR_SWIG_BLOCK_MAGIC2(grgsm, msg_to_tag);