diff --git a/apps/CMakeLists.txt b/apps/CMakeLists.txt
index ec04f1f..c6b04d9 100644
--- a/apps/CMakeLists.txt
+++ b/apps/CMakeLists.txt
@@ -21,11 +21,39 @@
 add_subdirectory(helpers)
 add_subdirectory(apps_data)
 
+SET(PYTHONPATH
+	${CMAKE_SOURCE_DIR}/python
+	${CMAKE_SOURCE_DIR}/python/misc_utils
+	${CMAKE_SOURCE_DIR}/python/demapping
+	${CMAKE_SOURCE_DIR}/python/receiver
+	${CMAKE_BINARY_DIR}/swig
+	$ENV{PYTHONPATH}
+	)
+string(REPLACE ";" ":" PYTHONPATH "${PYTHONPATH}")
+
+ADD_CUSTOM_COMMAND(
+	OUTPUT grgsm_livemon
+	COMMAND "${CMAKE_COMMAND}"
+		-E env PYTHONPATH="${PYTHONPATH}" GRC_BLOCKS_PATH=${CMAKE_SOURCE_DIR}/grc
+		${PC_GNURADIO_RUNTIME_PREFIX}/${GR_RUNTIME_DIR}/grcc -d ${CMAKE_CURRENT_BINARY_DIR}
+		${CMAKE_CURRENT_SOURCE_DIR}/grgsm_livemon.grc
+	COMMAND "${CMAKE_COMMAND}" -E rename grgsm_livemon.py grgsm_livemon
+	DEPENDS grgsm_livemon.grc
+	)
+ADD_CUSTOM_COMMAND(
+	OUTPUT grgsm_livemon_headless
+	COMMAND "${CMAKE_COMMAND}"
+		-E env PYTHONPATH="${PYTHONPATH}" GRC_BLOCKS_PATH=${CMAKE_SOURCE_DIR}/grc
+		${PC_GNURADIO_RUNTIME_PREFIX}/${GR_RUNTIME_DIR}/grcc -d ${CMAKE_CURRENT_BINARY_DIR}
+		${CMAKE_CURRENT_SOURCE_DIR}/grgsm_livemon_headless.grc
+	COMMAND "${CMAKE_COMMAND}" -E rename grgsm_livemon_headless.py grgsm_livemon_headless
+	DEPENDS grgsm_livemon_headless.grc
+	)
 
 GR_PYTHON_INSTALL(
     PROGRAMS
-    grgsm_livemon
-    grgsm_livemon_headless
+	${CMAKE_CURRENT_BINARY_DIR}/grgsm_livemon
+	${CMAKE_CURRENT_BINARY_DIR}/grgsm_livemon_headless
     grgsm_scanner
     grgsm_decode
     DESTINATION bin
diff --git a/apps/grgsm_livemon b/apps/grgsm_livemon
deleted file mode 100755
index 3e818c5..0000000
--- a/apps/grgsm_livemon
+++ /dev/null
@@ -1,380 +0,0 @@
-#!/usr/bin/env python2
-# -*- coding: utf-8 -*-
-# @file
-# @author (C) 2014-2016 by 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.
-#
-#
-##################################################
-# GNU Radio Python Flow Graph
-# Title: Gr-gsm Livemon
-# Author: Piotr Krysik
-# Description: Interactive monitor of a single C0 channel with analysis performed by Wireshark (command to run wireshark: sudo wireshark -k -f udp -Y gsmtap -i lo)
-# Generated: Tue Jan 23 14:59:18 2018
-##################################################
-
-if __name__ == '__main__':
-    import ctypes
-    import sys
-    if sys.platform.startswith('linux'):
-        try:
-            x11 = ctypes.cdll.LoadLibrary('libX11.so')
-            x11.XInitThreads()
-        except:
-            print "Warning: failed to XInitThreads()"
-
-from PyQt4 import Qt
-from gnuradio import blocks
-from gnuradio import eng_notation
-from gnuradio import gr
-from gnuradio import qtgui
-from gnuradio.eng_option import eng_option
-from gnuradio.filter import firdes
-from gnuradio.qtgui import Range, RangeWidget
-from math import pi
-from optparse import OptionParser
-import grgsm
-import osmosdr
-import pmt
-import sip
-import sys
-import time
-from gnuradio import qtgui
-
-
-class grgsm_livemon(gr.top_block, Qt.QWidget):
-
-    def __init__(self, args="", collector='localhost', collectorport='4729', fc=941.8e6, gain=30, osr=4, ppm=0, samp_rate=2000000.052982, serverport='4729', shiftoff=400e3):
-        gr.top_block.__init__(self, "Gr-gsm Livemon")
-        Qt.QWidget.__init__(self)
-        self.setWindowTitle("Gr-gsm Livemon")
-        qtgui.util.check_set_qss()
-        try:
-            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
-        except:
-            pass
-        self.top_scroll_layout = Qt.QVBoxLayout()
-        self.setLayout(self.top_scroll_layout)
-        self.top_scroll = Qt.QScrollArea()
-        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
-        self.top_scroll_layout.addWidget(self.top_scroll)
-        self.top_scroll.setWidgetResizable(True)
-        self.top_widget = Qt.QWidget()
-        self.top_scroll.setWidget(self.top_widget)
-        self.top_layout = Qt.QVBoxLayout(self.top_widget)
-        self.top_grid_layout = Qt.QGridLayout()
-        self.top_layout.addLayout(self.top_grid_layout)
-
-        self.settings = Qt.QSettings("GNU Radio", "grgsm_livemon")
-        self.restoreGeometry(self.settings.value("geometry").toByteArray())
-
-
-        ##################################################
-        # Parameters
-        ##################################################
-        self.args = args
-        self.collector = collector
-        self.collectorport = collectorport
-        self.fc = fc
-        self.gain = gain
-        self.osr = osr
-        self.ppm = ppm
-        self.samp_rate = samp_rate
-        self.serverport = serverport
-        self.shiftoff = shiftoff
-
-        ##################################################
-        # Variables
-        ##################################################
-        self.ppm_slider = ppm_slider = ppm
-        self.gain_slider = gain_slider = gain
-        self.fc_slider = fc_slider = fc
-
-        ##################################################
-        # Blocks
-        ##################################################
-        self._ppm_slider_range = Range(-150, 150, 0.1, ppm, 100)
-        self._ppm_slider_win = RangeWidget(self._ppm_slider_range, self.set_ppm_slider, 'PPM Offset', "counter", float)
-        self.top_layout.addWidget(self._ppm_slider_win)
-        self._gain_slider_range = Range(0, 100, 0.5, gain, 100)
-        self._gain_slider_win = RangeWidget(self._gain_slider_range, self.set_gain_slider, 'Gain', "counter", float)
-        self.top_layout.addWidget(self._gain_slider_win)
-        self._fc_slider_range = Range(800e6, 1990e6, 2e5, fc, 100)
-        self._fc_slider_win = RangeWidget(self._fc_slider_range, self.set_fc_slider, 'Frequency', "counter_slider", float)
-        self.top_layout.addWidget(self._fc_slider_win)
-        self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + args )
-        self.rtlsdr_source_0.set_sample_rate(samp_rate)
-        self.rtlsdr_source_0.set_center_freq(fc_slider-shiftoff, 0)
-        self.rtlsdr_source_0.set_freq_corr(ppm_slider, 0)
-        self.rtlsdr_source_0.set_dc_offset_mode(2, 0)
-        self.rtlsdr_source_0.set_iq_balance_mode(2, 0)
-        self.rtlsdr_source_0.set_gain_mode(False, 0)
-        self.rtlsdr_source_0.set_gain(gain_slider, 0)
-        self.rtlsdr_source_0.set_if_gain(20, 0)
-        self.rtlsdr_source_0.set_bb_gain(20, 0)
-        self.rtlsdr_source_0.set_antenna('', 0)
-        self.rtlsdr_source_0.set_bandwidth(250e3+abs(shiftoff), 0)
-
-        self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
-        	1024, #size
-        	firdes.WIN_BLACKMAN_hARRIS, #wintype
-        	fc_slider, #fc
-        	samp_rate, #bw
-        	"", #name
-        	1 #number of inputs
-        )
-        self.qtgui_freq_sink_x_0.set_update_time(0.10)
-        self.qtgui_freq_sink_x_0.set_y_axis(-140, 10)
-        self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB')
-        self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
-        self.qtgui_freq_sink_x_0.enable_autoscale(False)
-        self.qtgui_freq_sink_x_0.enable_grid(False)
-        self.qtgui_freq_sink_x_0.set_fft_average(1.0)
-        self.qtgui_freq_sink_x_0.enable_axis_labels(True)
-        self.qtgui_freq_sink_x_0.enable_control_panel(False)
-
-        if not True:
-          self.qtgui_freq_sink_x_0.disable_legend()
-
-        if "complex" == "float" or "complex" == "msg_float":
-          self.qtgui_freq_sink_x_0.set_plot_pos_half(not True)
-
-        labels = ['', '', '', '', '',
-                  '', '', '', '', '']
-        widths = [1, 1, 1, 1, 1,
-                  1, 1, 1, 1, 1]
-        colors = ["blue", "red", "green", "black", "cyan",
-                  "magenta", "yellow", "dark red", "dark green", "dark blue"]
-        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
-                  1.0, 1.0, 1.0, 1.0, 1.0]
-        for i in xrange(1):
-            if len(labels[i]) == 0:
-                self.qtgui_freq_sink_x_0.set_line_label(i, "Data {0}".format(i))
-            else:
-                self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
-            self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
-            self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
-            self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])
-
-        self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
-        self.top_layout.addWidget(self._qtgui_freq_sink_x_0_win)
-        self.gsm_sdcch8_demapper_0 = grgsm.gsm_sdcch8_demapper(
-            timeslot_nr=1,
-        )
-        self.gsm_receiver_0 = grgsm.receiver(4, ([0]), ([]), False)
-        self.gsm_message_printer_1 = grgsm.message_printer(pmt.intern(""), False,
-            False, False)
-        self.gsm_input_0 = grgsm.gsm_input(
-            ppm=ppm-int(ppm),
-            osr=4,
-            fc=fc_slider-shiftoff,
-            samp_rate_in=samp_rate,
-        )
-        self.gsm_decryption_0 = grgsm.decryption(([]), 1)
-        self.gsm_control_channels_decoder_0_0 = grgsm.control_channels_decoder()
-        self.gsm_control_channels_decoder_0 = grgsm.control_channels_decoder()
-        self.gsm_clock_offset_control_0 = grgsm.clock_offset_control(fc_slider-shiftoff, samp_rate, osr)
-        self.gsm_bcch_ccch_demapper_0 = grgsm.gsm_bcch_ccch_demapper(
-            timeslot_nr=0,
-        )
-        self.blocks_socket_pdu_0_1 = blocks.socket_pdu("UDP_CLIENT", collector, collectorport, 1500, False)
-        self.blocks_socket_pdu_0_0 = blocks.socket_pdu("UDP_SERVER", '127.0.0.1', serverport, 10000, False)
-        self.blocks_rotator_cc_0 = blocks.rotator_cc(-2*pi*shiftoff/samp_rate)
-
-
-
-        ##################################################
-        # Connections
-        ##################################################
-        self.msg_connect((self.blocks_socket_pdu_0_0, 'pdus'), (self.gsm_message_printer_1, 'msgs'))
-        self.msg_connect((self.gsm_bcch_ccch_demapper_0, 'bursts'), (self.gsm_control_channels_decoder_0, 'bursts'))
-        self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.gsm_input_0, 'ctrl_in'))
-        self.msg_connect((self.gsm_control_channels_decoder_0, 'msgs'), (self.blocks_socket_pdu_0_1, 'pdus'))
-        self.msg_connect((self.gsm_control_channels_decoder_0_0, 'msgs'), (self.blocks_socket_pdu_0_1, 'pdus'))
-        self.msg_connect((self.gsm_decryption_0, 'bursts'), (self.gsm_control_channels_decoder_0_0, 'bursts'))
-        self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_bcch_ccch_demapper_0, 'bursts'))
-        self.msg_connect((self.gsm_receiver_0, 'measurements'), (self.gsm_clock_offset_control_0, 'measurements'))
-        self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_sdcch8_demapper_0, 'bursts'))
-        self.msg_connect((self.gsm_sdcch8_demapper_0, 'bursts'), (self.gsm_decryption_0, 'bursts'))
-        self.connect((self.blocks_rotator_cc_0, 0), (self.gsm_input_0, 0))
-        self.connect((self.blocks_rotator_cc_0, 0), (self.qtgui_freq_sink_x_0, 0))
-        self.connect((self.gsm_input_0, 0), (self.gsm_receiver_0, 0))
-        self.connect((self.rtlsdr_source_0, 0), (self.blocks_rotator_cc_0, 0))
-
-    def closeEvent(self, event):
-        self.settings = Qt.QSettings("GNU Radio", "grgsm_livemon")
-        self.settings.setValue("geometry", self.saveGeometry())
-        event.accept()
-
-    def get_args(self):
-        return self.args
-
-    def set_args(self, args):
-        self.args = args
-
-    def get_collector(self):
-        return self.collector
-
-    def set_collector(self, collector):
-        self.collector = collector
-
-    def get_collectorport(self):
-        return self.collectorport
-
-    def set_collectorport(self, collectorport):
-        self.collectorport = collectorport
-
-    def get_fc(self):
-        return self.fc
-
-    def set_fc(self, fc):
-        self.fc = fc
-        self.set_fc_slider(self.fc)
-
-    def get_gain(self):
-        return self.gain
-
-    def set_gain(self, gain):
-        self.gain = gain
-        self.set_gain_slider(self.gain)
-
-    def get_osr(self):
-        return self.osr
-
-    def set_osr(self, osr):
-        self.osr = osr
-
-    def get_ppm(self):
-        return self.ppm
-
-    def set_ppm(self, ppm):
-        self.ppm = ppm
-        self.set_ppm_slider(self.ppm)
-        self.gsm_input_0.set_ppm(self.ppm-int(self.ppm))
-
-    def get_samp_rate(self):
-        return self.samp_rate
-
-    def set_samp_rate(self, samp_rate):
-        self.samp_rate = samp_rate
-        self.rtlsdr_source_0.set_sample_rate(self.samp_rate)
-        self.qtgui_freq_sink_x_0.set_frequency_range(self.fc_slider, self.samp_rate)
-        self.gsm_input_0.set_samp_rate_in(self.samp_rate)
-        self.blocks_rotator_cc_0.set_phase_inc(-2*pi*self.shiftoff/self.samp_rate)
-
-    def get_serverport(self):
-        return self.serverport
-
-    def set_serverport(self, serverport):
-        self.serverport = serverport
-
-    def get_shiftoff(self):
-        return self.shiftoff
-
-    def set_shiftoff(self, shiftoff):
-        self.shiftoff = shiftoff
-        self.rtlsdr_source_0.set_center_freq(self.fc_slider-self.shiftoff, 0)
-        self.rtlsdr_source_0.set_bandwidth(250e3+abs(self.shiftoff), 0)
-        self.gsm_input_0.set_fc(self.fc_slider-self.shiftoff)
-        self.gsm_clock_offset_control_0.set_fc(self.fc_slider-self.shiftoff)
-        self.blocks_rotator_cc_0.set_phase_inc(-2*pi*self.shiftoff/self.samp_rate)
-
-    def get_ppm_slider(self):
-        return self.ppm_slider
-
-    def set_ppm_slider(self, ppm_slider):
-        self.ppm_slider = ppm_slider
-        self.rtlsdr_source_0.set_freq_corr(self.ppm_slider, 0)
-
-    def get_gain_slider(self):
-        return self.gain_slider
-
-    def set_gain_slider(self, gain_slider):
-        self.gain_slider = gain_slider
-        self.rtlsdr_source_0.set_gain(self.gain_slider, 0)
-
-    def get_fc_slider(self):
-        return self.fc_slider
-
-    def set_fc_slider(self, fc_slider):
-        self.fc_slider = fc_slider
-        self.rtlsdr_source_0.set_center_freq(self.fc_slider-self.shiftoff, 0)
-        self.qtgui_freq_sink_x_0.set_frequency_range(self.fc_slider, self.samp_rate)
-        self.gsm_input_0.set_fc(self.fc_slider-self.shiftoff)
-        self.gsm_clock_offset_control_0.set_fc(self.fc_slider-self.shiftoff)
-
-
-def argument_parser():
-    description = 'Interactive monitor of a single C0 channel with analysis performed by Wireshark (command to run wireshark: sudo wireshark -k -f udp -Y gsmtap -i lo)'
-    parser = OptionParser(usage="%prog: [options]", option_class=eng_option, description=description)
-    parser.add_option(
-        "", "--args", dest="args", type="string", default="",
-        help="Set Device Arguments [default=%default]")
-    parser.add_option(
-        "", "--collector", dest="collector", type="string", default='localhost',
-        help="Set IP or DNS name of collector point [default=%default]")
-    parser.add_option(
-        "", "--collectorport", dest="collectorport", type="string", default='4729',
-        help="Set UDP port number of collector [default=%default]")
-    parser.add_option(
-        "-f", "--fc", dest="fc", type="eng_float", default=eng_notation.num_to_str(941.8e6),
-        help="Set GSM channel's central frequency [default=%default]")
-    parser.add_option(
-        "-g", "--gain", dest="gain", type="eng_float", default=eng_notation.num_to_str(30),
-        help="Set gain [default=%default]")
-    parser.add_option(
-        "", "--osr", dest="osr", type="intx", default=4,
-        help="Set OverSampling Ratio [default=%default]")
-    parser.add_option(
-        "-p", "--ppm", dest="ppm", type="eng_float", default=eng_notation.num_to_str(0),
-        help="Set ppm [default=%default]")
-    parser.add_option(
-        "-s", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(2000000.052982),
-        help="Set samp_rate [default=%default]")
-    parser.add_option(
-        "", "--serverport", dest="serverport", type="string", default='4729',
-        help="Set UDP server listening port [default=%default]")
-    parser.add_option(
-        "-o", "--shiftoff", dest="shiftoff", type="eng_float", default=eng_notation.num_to_str(400e3),
-        help="Set Frequency Shiftoff [default=%default]")
-    return parser
-
-
-def main(top_block_cls=grgsm_livemon, options=None):
-    if options is None:
-        options, _ = argument_parser().parse_args()
-
-    from distutils.version import StrictVersion
-    if StrictVersion(Qt.qVersion()) >= StrictVersion("4.5.0"):
-        style = gr.prefs().get_string('qtgui', 'style', 'raster')
-        Qt.QApplication.setGraphicsSystem(style)
-    qapp = Qt.QApplication(sys.argv)
-
-    tb = top_block_cls(args=options.args, collector=options.collector, collectorport=options.collectorport, fc=options.fc, gain=options.gain, osr=options.osr, ppm=options.ppm, samp_rate=options.samp_rate, serverport=options.serverport, shiftoff=options.shiftoff)
-    tb.start()
-    tb.show()
-
-    def quitting():
-        tb.stop()
-        tb.wait()
-    qapp.connect(qapp, Qt.SIGNAL("aboutToQuit()"), quitting)
-    qapp.exec_()
-
-
-if __name__ == '__main__':
-    main()
diff --git a/apps/grgsm_livemon_headless b/apps/grgsm_livemon_headless
deleted file mode 100755
index 721bc11..0000000
--- a/apps/grgsm_livemon_headless
+++ /dev/null
@@ -1,251 +0,0 @@
-#!/usr/bin/env python2
-# -*- coding: utf-8 -*-
-# @file
-# @author (C) 2017 by 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.
-#
-#
-##################################################
-# GNU Radio Python Flow Graph
-# Title: Gr-gsm Livemon
-# Author: Piotr Krysik
-# Description: Interactive monitor of a single C0 channel with analysis performed by Wireshark (command to run wireshark: sudo wireshark -k -f udp -Y gsmtap -i lo)
-# Generated: Wed Sep  6 16:27:23 2017
-##################################################
-
-from gnuradio import blocks
-from gnuradio import eng_notation
-from gnuradio import gr
-from gnuradio.eng_option import eng_option
-from gnuradio.filter import firdes
-from grgsm import arfcn
-from math import pi
-from optparse import OptionParser
-import grgsm
-import osmosdr
-import pmt
-import time
-
-
-class grgsm_livemon_headless(gr.top_block):
-
-    def __init__(self, args="", collector="localhost", collectorport="4729", gain=30, osr=4, ppm=0, rec_len=1000000, samp_rate=2000000.052982, serverport="4729", shiftoff=400e3, fc=957e6):
-        gr.top_block.__init__(self, "Gr-gsm Livemon")
-
-        ##################################################
-        # Parameters
-        ##################################################
-        self.args = args
-        self.collector = collector
-        self.collectorport = collectorport
-        self.gain = gain
-        self.osr = osr
-        self.ppm = ppm
-        self.rec_len = rec_len
-        self.samp_rate = samp_rate
-        self.serverport = serverport
-        self.shiftoff = shiftoff
-        self.fc = fc
-
-        ##################################################
-        # Blocks
-        ##################################################
-        self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + args )
-        self.rtlsdr_source_0.set_sample_rate(samp_rate)
-        self.rtlsdr_source_0.set_center_freq(fc-shiftoff, 0)
-        self.rtlsdr_source_0.set_freq_corr(ppm, 0)
-        self.rtlsdr_source_0.set_dc_offset_mode(2, 0)
-        self.rtlsdr_source_0.set_iq_balance_mode(2, 0)
-        self.rtlsdr_source_0.set_gain_mode(False, 0)
-        self.rtlsdr_source_0.set_gain(gain, 0)
-        self.rtlsdr_source_0.set_if_gain(20, 0)
-        self.rtlsdr_source_0.set_bb_gain(20, 0)
-        self.rtlsdr_source_0.set_antenna("", 0)
-        self.rtlsdr_source_0.set_bandwidth(250e3+abs(shiftoff), 0)
-          
-        self.gsm_sdcch8_demapper_0 = grgsm.gsm_sdcch8_demapper(
-            timeslot_nr=1,
-        )
-        self.gsm_receiver_0 = grgsm.receiver(4, ([arfcn.downlink2arfcn(fc)]), ([]), False)
-        self.gsm_message_printer_1 = grgsm.message_printer(pmt.intern(""), False,
-            False, False)
-        self.gsm_input_0 = grgsm.gsm_input(
-            ppm=ppm-int(ppm),
-            osr=4,
-            fc=fc,
-            samp_rate_in=samp_rate,
-        )
-        self.gsm_decryption_0 = grgsm.decryption(([]), 1)
-        self.gsm_control_channels_decoder_0_0 = grgsm.control_channels_decoder()
-        self.gsm_control_channels_decoder_0 = grgsm.control_channels_decoder()
-        self.gsm_clock_offset_control_0 = grgsm.clock_offset_control(fc-shiftoff, samp_rate, osr)
-        self.gsm_bcch_ccch_sdcch4_demapper_0 = grgsm.gsm_bcch_ccch_sdcch4_demapper(
-            timeslot_nr=0,
-        )
-        self.blocks_socket_pdu_0_1 = blocks.socket_pdu("UDP_CLIENT", collector, collectorport, 1500, False)
-        self.blocks_socket_pdu_0_0 = blocks.socket_pdu("UDP_SERVER", "127.0.0.1", serverport, 10000, False)
-        self.blocks_rotator_cc_0 = blocks.rotator_cc(-2*pi*shiftoff/samp_rate)
-        self.blocks_head_0 = blocks.head(gr.sizeof_gr_complex*1, int(rec_len*samp_rate))
-
-        ##################################################
-        # Connections
-        ##################################################
-        self.msg_connect((self.blocks_socket_pdu_0_0, 'pdus'), (self.gsm_message_printer_1, 'msgs'))    
-        self.msg_connect((self.gsm_bcch_ccch_sdcch4_demapper_0, 'bursts'), (self.gsm_control_channels_decoder_0, 'bursts'))    
-        self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.gsm_input_0, 'ctrl_in'))    
-        self.msg_connect((self.gsm_control_channels_decoder_0, 'msgs'), (self.blocks_socket_pdu_0_1, 'pdus'))    
-        self.msg_connect((self.gsm_control_channels_decoder_0_0, 'msgs'), (self.blocks_socket_pdu_0_1, 'pdus'))    
-        self.msg_connect((self.gsm_decryption_0, 'bursts'), (self.gsm_control_channels_decoder_0_0, 'bursts'))    
-        self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_bcch_ccch_sdcch4_demapper_0, 'bursts'))    
-        self.msg_connect((self.gsm_receiver_0, 'measurements'), (self.gsm_clock_offset_control_0, 'measurements'))    
-        self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_sdcch8_demapper_0, 'bursts'))    
-        self.msg_connect((self.gsm_sdcch8_demapper_0, 'bursts'), (self.gsm_decryption_0, 'bursts'))    
-        self.connect((self.blocks_head_0, 0), (self.blocks_rotator_cc_0, 0))    
-        self.connect((self.blocks_rotator_cc_0, 0), (self.gsm_input_0, 0))    
-        self.connect((self.gsm_input_0, 0), (self.gsm_receiver_0, 0))    
-        self.connect((self.rtlsdr_source_0, 0), (self.blocks_head_0, 0))    
-
-    def get_args(self):
-        return self.args
-
-    def set_args(self, args):
-        self.args = args
-
-    def get_collector(self):
-        return self.collector
-
-    def set_collector(self, collector):
-        self.collector = collector
-
-    def get_collectorport(self):
-        return self.collectorport
-
-    def set_collectorport(self, collectorport):
-        self.collectorport = collectorport
-
-    def get_gain(self):
-        return self.gain
-
-    def set_gain(self, gain):
-        self.gain = gain
-        self.rtlsdr_source_0.set_gain(self.gain, 0)
-
-    def get_osr(self):
-        return self.osr
-
-    def set_osr(self, osr):
-        self.osr = osr
-
-    def get_ppm(self):
-        return self.ppm
-
-    def set_ppm(self, ppm):
-        self.ppm = ppm
-        self.gsm_input_0.set_ppm(self.ppm-int(self.ppm))
-        self.rtlsdr_source_0.set_freq_corr(self.ppm, 0)
-
-    def get_rec_len(self):
-        return self.rec_len
-
-    def set_rec_len(self, rec_len):
-        self.rec_len = rec_len
-        self.blocks_head_0.set_length(int(self.rec_len*self.samp_rate))
-
-    def get_samp_rate(self):
-        return self.samp_rate
-
-    def set_samp_rate(self, samp_rate):
-        self.samp_rate = samp_rate
-        self.blocks_head_0.set_length(int(self.rec_len*self.samp_rate))
-        self.blocks_rotator_cc_0.set_phase_inc(-2*pi*self.shiftoff/self.samp_rate)
-        self.gsm_input_0.set_samp_rate_in(self.samp_rate)
-        self.rtlsdr_source_0.set_sample_rate(self.samp_rate)
-
-    def get_serverport(self):
-        return self.serverport
-
-    def set_serverport(self, serverport):
-        self.serverport = serverport
-
-    def get_shiftoff(self):
-        return self.shiftoff
-
-    def set_shiftoff(self, shiftoff):
-        self.shiftoff = shiftoff
-        self.blocks_rotator_cc_0.set_phase_inc(-2*pi*self.shiftoff/self.samp_rate)
-        self.rtlsdr_source_0.set_center_freq(self.fc-self.shiftoff, 0)
-        self.rtlsdr_source_0.set_bandwidth(250e3+abs(self.shiftoff), 0)
-
-    def get_fc(self):
-        return self.fc
-
-    def set_fc(self, fc):
-        self.fc = fc
-        self.gsm_input_0.set_fc(self.fc)
-        self.rtlsdr_source_0.set_center_freq(self.fc-self.shiftoff, 0)
-
-
-def argument_parser():
-    parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
-    parser.add_option(
-        "", "--args", dest="args", type="string", default="",
-        help="Set Device Arguments [default=%default]")
-    parser.add_option(
-        "", "--collector", dest="collector", type="string", default="localhost",
-        help="Set IP or DNS name of collector point [default=%default]")
-    parser.add_option(
-        "", "--collectorport", dest="collectorport", type="string", default="4729",
-        help="Set UDP port number of collector [default=%default]")
-    parser.add_option(
-        "-g", "--gain", dest="gain", type="eng_float", default=eng_notation.num_to_str(30),
-        help="Set RF Gain [default=%default]")
-    parser.add_option(
-        "", "--osr", dest="osr", type="intx", default=4,
-        help="Set OverSampling Ratio [default=%default]")
-    parser.add_option(
-        "-p", "--ppm", dest="ppm", type="eng_float", default=eng_notation.num_to_str(0),
-        help="Set Clock frequency offset in ppms (1/1e6 parts) [default=%default]")
-    parser.add_option(
-        "-T", "--rec-len", dest="rec_len", type="eng_float", default=eng_notation.num_to_str(1000000),
-        help="Set Recording length in seconds [default=%default]")
-    parser.add_option(
-        "-s", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(2000000.052982),
-        help="Set samp_rate [default=%default]")
-    parser.add_option(
-        "", "--serverport", dest="serverport", type="string", default="4729",
-        help="Set UDP server listening port [default=%default]")
-    parser.add_option(
-        "-o", "--shiftoff", dest="shiftoff", type="eng_float", default=eng_notation.num_to_str(400e3),
-        help="Set Frequency Shiftoff [default=%default]")
-    parser.add_option(
-        "-f", "--fc", dest="fc", type="eng_float", default=eng_notation.num_to_str(957e6),
-        help="Set GSM channel's central frequency [default=%default]")
-    return parser
-
-
-def main(top_block_cls=grgsm_livemon_headless, options=None):
-    if options is None:
-        options, _ = argument_parser().parse_args()
-
-    tb = top_block_cls(args=options.args, collector=options.collector, collectorport=options.collectorport, gain=options.gain, osr=options.osr, ppm=options.ppm, rec_len=options.rec_len, samp_rate=options.samp_rate, serverport=options.serverport, shiftoff=options.shiftoff, fc=options.fc)
-    tb.start()
-    tb.wait()
-
-
-if __name__ == '__main__':
-    main()