<?xml version='1.0' encoding='utf-8'?>
<?grc format='1' created='3.7.12'?>
<flow_graph>
  <timestamp>Fri Oct 19 14:08:05 2018</timestamp>
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    </param>
    <param>
      <key>label10</key>
      <value></value>
    </param>
    <param>
      <key>marker10</key>
      <value>0</value>
    </param>
    <param>
      <key>style10</key>
      <value>0</value>
    </param>
    <param>
      <key>width10</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha2</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color2</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label2</key>
      <value></value>
    </param>
    <param>
      <key>marker2</key>
      <value>0</value>
    </param>
    <param>
      <key>style2</key>
      <value>0</value>
    </param>
    <param>
      <key>width2</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha3</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color3</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label3</key>
      <value></value>
    </param>
    <param>
      <key>marker3</key>
      <value>0</value>
    </param>
    <param>
      <key>style3</key>
      <value>0</value>
    </param>
    <param>
      <key>width3</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha4</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color4</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label4</key>
      <value></value>
    </param>
    <param>
      <key>marker4</key>
      <value>0</value>
    </param>
    <param>
      <key>style4</key>
      <value>0</value>
    </param>
    <param>
      <key>width4</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha5</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color5</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label5</key>
      <value></value>
    </param>
    <param>
      <key>marker5</key>
      <value>0</value>
    </param>
    <param>
      <key>style5</key>
      <value>0</value>
    </param>
    <param>
      <key>width5</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha6</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color6</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label6</key>
      <value></value>
    </param>
    <param>
      <key>marker6</key>
      <value>0</value>
    </param>
    <param>
      <key>style6</key>
      <value>0</value>
    </param>
    <param>
      <key>width6</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha7</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color7</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label7</key>
      <value></value>
    </param>
    <param>
      <key>marker7</key>
      <value>0</value>
    </param>
    <param>
      <key>style7</key>
      <value>0</value>
    </param>
    <param>
      <key>width7</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha8</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color8</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label8</key>
      <value></value>
    </param>
    <param>
      <key>marker8</key>
      <value>0</value>
    </param>
    <param>
      <key>style8</key>
      <value>0</value>
    </param>
    <param>
      <key>width8</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha9</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color9</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label9</key>
      <value></value>
    </param>
    <param>
      <key>marker9</key>
      <value>0</value>
    </param>
    <param>
      <key>style9</key>
      <value>0</value>
    </param>
    <param>
      <key>width9</key>
      <value>1</value>
    </param>
    <param>
      <key>name</key>
      <value>""</value>
    </param>
    <param>
      <key>nconnections</key>
      <value>1</value>
    </param>
    <param>
      <key>size</key>
      <value>1024</value>
    </param>
    <param>
      <key>tr_chan</key>
      <value>0</value>
    </param>
    <param>
      <key>tr_level</key>
      <value>0.0</value>
    </param>
    <param>
      <key>tr_mode</key>
      <value>qtgui.TRIG_MODE_FREE</value>
    </param>
    <param>
      <key>tr_slope</key>
      <value>qtgui.TRIG_SLOPE_POS</value>
    </param>
    <param>
      <key>tr_tag</key>
      <value>""</value>
    </param>
    <param>
      <key>type</key>
      <value>complex</value>
    </param>
    <param>
      <key>update_time</key>
      <value>0.1</value>
    </param>
    <param>
      <key>xmax</key>
      <value>2</value>
    </param>
    <param>
      <key>xmin</key>
      <value>-2</value>
    </param>
    <param>
      <key>ymax</key>
      <value>2</value>
    </param>
    <param>
      <key>ymin</key>
      <value>-2</value>
    </param>
  </block>
  <block>
    <key>qtgui_time_sink_x</key>
    <param>
      <key>autoscale</key>
      <value>False</value>
    </param>
    <param>
      <key>axislabels</key>
      <value>True</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>ctrlpanel</key>
      <value>False</value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>entags</key>
      <value>True</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(181, 432)</value>
    </param>
    <param>
      <key>gui_hint</key>
      <value>(2,0,1,2)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>180</value>
    </param>
    <param>
      <key>grid</key>
      <value>False</value>
    </param>
    <param>
      <key>id</key>
      <value>qtgui_time_sink_x_0</value>
    </param>
    <param>
      <key>legend</key>
      <value>False</value>
    </param>
    <param>
      <key>alpha1</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color1</key>
      <value>"blue"</value>
    </param>
    <param>
      <key>label1</key>
      <value>preamble cross-correlation</value>
    </param>
    <param>
      <key>marker1</key>
      <value>-1</value>
    </param>
    <param>
      <key>style1</key>
      <value>1</value>
    </param>
    <param>
      <key>width1</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha10</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color10</key>
      <value>"blue"</value>
    </param>
    <param>
      <key>label10</key>
      <value></value>
    </param>
    <param>
      <key>marker10</key>
      <value>-1</value>
    </param>
    <param>
      <key>style10</key>
      <value>1</value>
    </param>
    <param>
      <key>width10</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha2</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color2</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label2</key>
      <value>rate</value>
    </param>
    <param>
      <key>marker2</key>
      <value>-1</value>
    </param>
    <param>
      <key>style2</key>
      <value>1</value>
    </param>
    <param>
      <key>width2</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha3</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color3</key>
      <value>"green"</value>
    </param>
    <param>
      <key>label3</key>
      <value>phase</value>
    </param>
    <param>
      <key>marker3</key>
      <value>-1</value>
    </param>
    <param>
      <key>style3</key>
      <value>1</value>
    </param>
    <param>
      <key>width3</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha4</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color4</key>
      <value>"black"</value>
    </param>
    <param>
      <key>label4</key>
      <value></value>
    </param>
    <param>
      <key>marker4</key>
      <value>-1</value>
    </param>
    <param>
      <key>style4</key>
      <value>1</value>
    </param>
    <param>
      <key>width4</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha5</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color5</key>
      <value>"cyan"</value>
    </param>
    <param>
      <key>label5</key>
      <value></value>
    </param>
    <param>
      <key>marker5</key>
      <value>-1</value>
    </param>
    <param>
      <key>style5</key>
      <value>1</value>
    </param>
    <param>
      <key>width5</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha6</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color6</key>
      <value>"magenta"</value>
    </param>
    <param>
      <key>label6</key>
      <value></value>
    </param>
    <param>
      <key>marker6</key>
      <value>-1</value>
    </param>
    <param>
      <key>style6</key>
      <value>1</value>
    </param>
    <param>
      <key>width6</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha7</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color7</key>
      <value>"yellow"</value>
    </param>
    <param>
      <key>label7</key>
      <value></value>
    </param>
    <param>
      <key>marker7</key>
      <value>-1</value>
    </param>
    <param>
      <key>style7</key>
      <value>1</value>
    </param>
    <param>
      <key>width7</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha8</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color8</key>
      <value>"dark red"</value>
    </param>
    <param>
      <key>label8</key>
      <value></value>
    </param>
    <param>
      <key>marker8</key>
      <value>-1</value>
    </param>
    <param>
      <key>style8</key>
      <value>1</value>
    </param>
    <param>
      <key>width8</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha9</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color9</key>
      <value>"dark green"</value>
    </param>
    <param>
      <key>label9</key>
      <value></value>
    </param>
    <param>
      <key>marker9</key>
      <value>-1</value>
    </param>
    <param>
      <key>style9</key>
      <value>1</value>
    </param>
    <param>
      <key>width9</key>
      <value>1</value>
    </param>
    <param>
      <key>name</key>
      <value>""</value>
    </param>
    <param>
      <key>nconnections</key>
      <value>1</value>
    </param>
    <param>
      <key>size</key>
      <value>1024</value>
    </param>
    <param>
      <key>srate</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>stemplot</key>
      <value>False</value>
    </param>
    <param>
      <key>tr_chan</key>
      <value>0</value>
    </param>
    <param>
      <key>tr_delay</key>
      <value>0.01</value>
    </param>
    <param>
      <key>tr_level</key>
      <value>0.0</value>
    </param>
    <param>
      <key>tr_mode</key>
      <value>qtgui.TRIG_MODE_TAG</value>
    </param>
    <param>
      <key>tr_slope</key>
      <value>qtgui.TRIG_SLOPE_POS</value>
    </param>
    <param>
      <key>tr_tag</key>
      <value>"time_est"</value>
    </param>
    <param>
      <key>type</key>
      <value>float</value>
    </param>
    <param>
      <key>update_time</key>
      <value>.1</value>
    </param>
    <param>
      <key>ylabel</key>
      <value>preamble correlation</value>
    </param>
    <param>
      <key>yunit</key>
      <value>""</value>
    </param>
    <param>
      <key>ymax</key>
      <value>1000</value>
    </param>
    <param>
      <key>ymin</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>qtgui_time_sink_x</key>
    <param>
      <key>autoscale</key>
      <value>False</value>
    </param>
    <param>
      <key>axislabels</key>
      <value>True</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>ctrlpanel</key>
      <value>False</value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>entags</key>
      <value>True</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(448, 368)</value>
    </param>
    <param>
      <key>gui_hint</key>
      <value>(5,0,1,4)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>180</value>
    </param>
    <param>
      <key>grid</key>
      <value>False</value>
    </param>
    <param>
      <key>id</key>
      <value>qtgui_time_sink_x_1</value>
    </param>
    <param>
      <key>legend</key>
      <value>False</value>
    </param>
    <param>
      <key>alpha1</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color1</key>
      <value>"blue"</value>
    </param>
    <param>
      <key>label1</key>
      <value></value>
    </param>
    <param>
      <key>marker1</key>
      <value>-1</value>
    </param>
    <param>
      <key>style1</key>
      <value>1</value>
    </param>
    <param>
      <key>width1</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha10</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color10</key>
      <value>"blue"</value>
    </param>
    <param>
      <key>label10</key>
      <value></value>
    </param>
    <param>
      <key>marker10</key>
      <value>-1</value>
    </param>
    <param>
      <key>style10</key>
      <value>1</value>
    </param>
    <param>
      <key>width10</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha2</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color2</key>
      <value>"red"</value>
    </param>
    <param>
      <key>label2</key>
      <value></value>
    </param>
    <param>
      <key>marker2</key>
      <value>-1</value>
    </param>
    <param>
      <key>style2</key>
      <value>1</value>
    </param>
    <param>
      <key>width2</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha3</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color3</key>
      <value>"green"</value>
    </param>
    <param>
      <key>label3</key>
      <value></value>
    </param>
    <param>
      <key>marker3</key>
      <value>-1</value>
    </param>
    <param>
      <key>style3</key>
      <value>1</value>
    </param>
    <param>
      <key>width3</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha4</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color4</key>
      <value>"black"</value>
    </param>
    <param>
      <key>label4</key>
      <value></value>
    </param>
    <param>
      <key>marker4</key>
      <value>-1</value>
    </param>
    <param>
      <key>style4</key>
      <value>1</value>
    </param>
    <param>
      <key>width4</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha5</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color5</key>
      <value>"cyan"</value>
    </param>
    <param>
      <key>label5</key>
      <value></value>
    </param>
    <param>
      <key>marker5</key>
      <value>-1</value>
    </param>
    <param>
      <key>style5</key>
      <value>1</value>
    </param>
    <param>
      <key>width5</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha6</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color6</key>
      <value>"magenta"</value>
    </param>
    <param>
      <key>label6</key>
      <value></value>
    </param>
    <param>
      <key>marker6</key>
      <value>-1</value>
    </param>
    <param>
      <key>style6</key>
      <value>1</value>
    </param>
    <param>
      <key>width6</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha7</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color7</key>
      <value>"yellow"</value>
    </param>
    <param>
      <key>label7</key>
      <value></value>
    </param>
    <param>
      <key>marker7</key>
      <value>-1</value>
    </param>
    <param>
      <key>style7</key>
      <value>1</value>
    </param>
    <param>
      <key>width7</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha8</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color8</key>
      <value>"dark red"</value>
    </param>
    <param>
      <key>label8</key>
      <value></value>
    </param>
    <param>
      <key>marker8</key>
      <value>-1</value>
    </param>
    <param>
      <key>style8</key>
      <value>1</value>
    </param>
    <param>
      <key>width8</key>
      <value>1</value>
    </param>
    <param>
      <key>alpha9</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color9</key>
      <value>"dark green"</value>
    </param>
    <param>
      <key>label9</key>
      <value></value>
    </param>
    <param>
      <key>marker9</key>
      <value>-1</value>
    </param>
    <param>
      <key>style9</key>
      <value>1</value>
    </param>
    <param>
      <key>width9</key>
      <value>1</value>
    </param>
    <param>
      <key>name</key>
      <value>""</value>
    </param>
    <param>
      <key>nconnections</key>
      <value>1</value>
    </param>
    <param>
      <key>size</key>
      <value>1024</value>
    </param>
    <param>
      <key>srate</key>
      <value>samp_rate/sps/2</value>
    </param>
    <param>
      <key>stemplot</key>
      <value>False</value>
    </param>
    <param>
      <key>tr_chan</key>
      <value>0</value>
    </param>
    <param>
      <key>tr_delay</key>
      <value>0</value>
    </param>
    <param>
      <key>tr_level</key>
      <value>0.0</value>
    </param>
    <param>
      <key>tr_mode</key>
      <value>qtgui.TRIG_MODE_AUTO</value>
    </param>
    <param>
      <key>tr_slope</key>
      <value>qtgui.TRIG_SLOPE_POS</value>
    </param>
    <param>
      <key>tr_tag</key>
      <value>"packet_len"</value>
    </param>
    <param>
      <key>type</key>
      <value>msg_float</value>
    </param>
    <param>
      <key>update_time</key>
      <value>0.10</value>
    </param>
    <param>
      <key>ylabel</key>
      <value>soft_dec</value>
    </param>
    <param>
      <key>yunit</key>
      <value>""</value>
    </param>
    <param>
      <key>ymax</key>
      <value>7</value>
    </param>
    <param>
      <key>ymin</key>
      <value>-7</value>
    </param>
  </block>
  <block>
    <key>qtgui_waterfall_sink_x</key>
    <param>
      <key>axislabels</key>
      <value>True</value>
    </param>
    <param>
      <key>bw</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>fc</key>
      <value>0</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>fftsize</key>
      <value>1024*4</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(938, 165)</value>
    </param>
    <param>
      <key>gui_hint</key>
      <value>(0,0,2,4)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>grid</key>
      <value>False</value>
    </param>
    <param>
      <key>id</key>
      <value>qtgui_waterfall_sink_x_0</value>
    </param>
    <param>
      <key>int_max</key>
      <value>10</value>
    </param>
    <param>
      <key>int_min</key>
      <value>-80</value>
    </param>
    <param>
      <key>legend</key>
      <value>True</value>
    </param>
    <param>
      <key>alpha1</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color1</key>
      <value>0</value>
    </param>
    <param>
      <key>label1</key>
      <value></value>
    </param>
    <param>
      <key>alpha10</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color10</key>
      <value>0</value>
    </param>
    <param>
      <key>label10</key>
      <value></value>
    </param>
    <param>
      <key>alpha2</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color2</key>
      <value>0</value>
    </param>
    <param>
      <key>label2</key>
      <value></value>
    </param>
    <param>
      <key>alpha3</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color3</key>
      <value>0</value>
    </param>
    <param>
      <key>label3</key>
      <value></value>
    </param>
    <param>
      <key>alpha4</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color4</key>
      <value>0</value>
    </param>
    <param>
      <key>label4</key>
      <value></value>
    </param>
    <param>
      <key>alpha5</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color5</key>
      <value>0</value>
    </param>
    <param>
      <key>label5</key>
      <value></value>
    </param>
    <param>
      <key>alpha6</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color6</key>
      <value>0</value>
    </param>
    <param>
      <key>label6</key>
      <value></value>
    </param>
    <param>
      <key>alpha7</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color7</key>
      <value>0</value>
    </param>
    <param>
      <key>label7</key>
      <value></value>
    </param>
    <param>
      <key>alpha8</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color8</key>
      <value>0</value>
    </param>
    <param>
      <key>label8</key>
      <value></value>
    </param>
    <param>
      <key>alpha9</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color9</key>
      <value>0</value>
    </param>
    <param>
      <key>label9</key>
      <value></value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>name</key>
      <value>""</value>
    </param>
    <param>
      <key>nconnections</key>
      <value>1</value>
    </param>
    <param>
      <key>showports</key>
      <value>True</value>
    </param>
    <param>
      <key>freqhalf</key>
      <value>True</value>
    </param>
    <param>
      <key>type</key>
      <value>complex</value>
    </param>
    <param>
      <key>update_time</key>
      <value>0.10</value>
    </param>
    <param>
      <key>wintype</key>
      <value>firdes.WIN_BLACKMAN_hARRIS</value>
    </param>
  </block>
  <connection>
    <source_block_id>analog_agc2_xx_0</source_block_id>
    <sink_block_id>blocks_throttle_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_complex_to_mag_0</source_block_id>
    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_float_to_complex_0</source_block_id>
    <sink_block_id>analog_agc2_xx_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
    <sink_block_id>blocks_file_sink_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_throttle_0</source_block_id>
    <sink_block_id>digitalhf_physical_layer_driver_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_throttle_0</source_block_id>
    <sink_block_id>qtgui_waterfall_sink_x_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_wavfile_source_0</source_block_id>
    <sink_block_id>blocks_float_to_complex_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_wavfile_source_0</source_block_id>
    <sink_block_id>blocks_float_to_complex_0</sink_block_id>
    <source_key>1</source_key>
    <sink_key>1</sink_key>
  </connection>
  <connection>
    <source_block_id>digitalhf_physical_layer_driver_0</source_block_id>
    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
    <source_key>bits</source_key>
    <sink_key>pdus</sink_key>
  </connection>
  <connection>
    <source_block_id>digitalhf_physical_layer_driver_0</source_block_id>
    <sink_block_id>blocks_complex_to_mag_0</sink_block_id>
    <source_key>1</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>digitalhf_physical_layer_driver_0</source_block_id>
    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>digitalhf_physical_layer_driver_0</source_block_id>
    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
    <source_key>soft_dec</source_key>
    <sink_key>in</sink_key>
  </connection>
  <connection>
    <source_block_id>digitalhf_physical_layer_driver_0</source_block_id>
    <sink_block_id>blocks_null_sink_0</sink_block_id>
    <source_key>2</source_key>
    <sink_key>0</sink_key>
  </connection>
</flow_graph>