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 */
+