<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Mon Nov 9 07:47:17 2009</timestamp>
<block>
<key>options</key>
<param>
<key>id</key>
<value>file_rx_hrpt</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>title</key>
<value>USRP HRPT Receiver</value>
</param>
<param>
<key>author</key>
<value></value>
</param>
<param>
<key>description</key>
<value></value>
</param>
<param>
<key>window_size</key>
<value>4096,4096</value>
</param>
<param>
<key>generate_options</key>
<value>wx_gui</value>
</param>
<param>
<key>category</key>
<value>Custom</value>
</param>
<param>
<key>run_options</key>
<value>run</value>
</param>
<param>
<key>run</key>
<value>True</value>
</param>
<param>
<key>realtime_scheduling</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(10, 10)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>sym_rate</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>600*1109</value>
</param>
<param>
<key>_coordinate</key>
<value>(301, 19)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>sps</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>sample_rate/sym_rate</value>
</param>
<param>
<key>_coordinate</key>
<value>(397, 19)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>sample_rate</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>64e6/decim</value>
</param>
<param>
<key>_coordinate</key>
<value>(198, 17)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>virtual_source</key>
<param>
<key>id</key>
<value>virtual_source_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>stream_id</key>
<value>baseband</value>
</param>
<param>
<key>_coordinate</key>
<value>(173, 971)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>wxgui_scopesink2</key>
<param>
<key>id</key>
<value>demod_scope</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param>
<param>
<key>title</key>
<value>Post-Demod</value>
</param>
<param>
<key>samp_rate</key>
<value>sym_rate*2.0</value>
</param>
<param>
<key>v_scale</key>
<value>0.5</value>
</param>
<param>
<key>v_offset</key>
<value>0</value>
</param>
<param>
<key>t_scale</key>
<value>10.0/sym_rate</value>
</param>
<param>
<key>ac_couple</key>
<value>False</value>
</param>
<param>
<key>xy_mode</key>
<value>False</value>
</param>
<param>
<key>num_inputs</key>
<value>1</value>
</param>
<param>
<key>win_size</key>
<value></value>
</param>
<param>
<key>grid_pos</key>
<value>0, 0, 1, 1</value>
</param>
<param>
<key>notebook</key>
<value>displays, 1</value>
</param>
<param>
<key>_coordinate</key>
<value>(666, 542)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
</param>
</block>
<block>
<key>gr_clock_recovery_mm_xx</key>
<param>
<key>id</key>
<value>gr_clock_recovery_mm_xx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param>
<param>
<key>omega</key>
<value>sps/2.0</value>
</param>
<param>
<key>gain_omega</key>
<value>clock_alpha**2/4.0</value>
</param>
<param>
<key>mu</key>
<value>0.5</value>
</param>
<param>
<key>gain_mu</key>
<value>clock_alpha</value>
</param>
<param>
<key>omega_relative_limit</key>
<value>max_clock_offset</value>
</param>
<param>
<key>_coordinate</key>
<value>(873, 696)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_moving_average_xx</key>
<param>
<key>id</key>
<value>gr_moving_average_xx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param>
<param>
<key>length</key>
<value>hs</value>
</param>
<param>
<key>scale</key>
<value>1.0/hs</value>
</param>
<param>
<key>max_iter</key>
<value>4000</value>
</param>
<param>
<key>_coordinate</key>
<value>(682, 713)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>noaa_hrpt_pll_cf</key>
<param>
<key>id</key>
<value>pll</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>alpha</key>
<value>pll_alpha</value>
</param>
<param>
<key>beta</key>
<value>pll_alpha**2/4.0</value>
</param>
<param>
<key>max_offset</key>
<value>max_carrier_offset</value>
</param>
<param>
<key>_coordinate</key>
<value>(469, 713)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>virtual_sink</key>
<param>
<key>id</key>
<value>virtual_sink_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>stream_id</key>
<value>baseband</value>
</param>
<param>
<key>_coordinate</key>
<value>(1142, 728)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>config_filename</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>os.environ['HOME']+'/.gnuradio/config.conf'</value>
</param>
<param>
<key>_coordinate</key>
<value>(13, 159)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>import</key>
<param>
<key>id</key>
<value>import_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>import</key>
<value>import math, os</value>
</param>
<param>
<key>_coordinate</key>
<value>(11, 110)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_agc_xx</key>
<param>
<key>id</key>
<value>agc</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>rate</key>
<value>1e-6</value>
</param>
<param>
<key>reference</key>
<value>1.0</value>
</param>
<param>
<key>gain</key>
<value>1.0</value>
</param>
<param>
<key>max_gain</key>
<value>1.0</value>
</param>
<param>
<key>_coordinate</key>
<value>(301, 705)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_interleaved_short_to_complex</key>
<param>
<key>id</key>
<value>gr_interleaved_short_to_complex_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(73, 733)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_file_source</key>
<param>
<key>id</key>
<value>gr_file_source_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>file</key>
<value>input_filename</value>
</param>
<param>
<key>type</key>
<value>short</value>
</param>
<param>
<key>repeat</key>
<value>False</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(76, 613)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>notebook</key>
<param>
<key>id</key>
<value>displays</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>style</key>
<value>wx.NB_TOP</value>
</param>
<param>
<key>labels</key>
<value>['Spectrum','Demod']</value>
</param>
<param>
<key>grid_pos</key>
<value>1,0,1,2</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(12, 249)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>wxgui_fftsink2</key>
<param>
<key>id</key>
<value>rx_fft</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>title</key>
<value>RX Spectrum</value>
</param>
<param>
<key>samp_rate</key>
<value>sample_rate</value>
</param>
<param>
<key>baseband_freq</key>
<value>0</value>
</param>
<param>
<key>y_per_div</key>
<value>5</value>
</param>
<param>
<key>y_divs</key>
<value>8</value>
</param>
<param>
<key>ref_level</key>
<value>-5</value>
</param>
<param>
<key>ref_scale</key>
<value>2.0</value>
</param>
<param>
<key>fft_size</key>
<value>1024</value>
</param>
<param>
<key>fft_rate</key>
<value>15</value>
</param>
<param>
<key>peak_hold</key>
<value>False</value>
</param>
<param>
<key>average</key>
<value>True</value>
</param>
<param>
<key>avg_alpha</key>
<value>0.1</value>
</param>
<param>
<key>win</key>
<value>None</value>
</param>
<param>
<key>win_size</key>
<value>640, 360</value>
</param>
<param>
<key>grid_pos</key>
<value>0, 0, 1, 1</value>
</param>
<param>
<key>notebook</key>
<value>displays, 0</value>
</param>
<param>
<key>_coordinate</key>
<value>(471, 450)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_binary_slicer_fb</key>
<param>
<key>id</key>
<value>gr_binary_slicer_fb_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(393, 975)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_throttle</key>
<param>
<key>id</key>
<value>throttle</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>short</value>
</param>
<param>
<key>samples_per_second</key>
<value>2*sample_rate</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(75, 679)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
</param>
</block>
<block>
<key>parameter</key>
<param>
<key>id</key>
<value>input_filename</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>input_filename</value>
</param>
<param>
<key>value</key>
<value>usrp.dat</value>
</param>
<param>
<key>type</key>
<value>string</value>
</param>
<param>
<key>short_id</key>
<value>F</value>
</param>
<param>
<key>_coordinate</key>
<value>(196, 98)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>parameter</key>
<param>
<key>id</key>
<value>decim</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>decim</value>
</param>
<param>
<key>value</key>
<value>32</value>
</param>
<param>
<key>type</key>
<value>intx</value>
</param>
<param>
<key>short_id</key>
<value>d</value>
</param>
<param>
<key>_coordinate</key>
<value>(307, 98)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>pll_alpha</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>PLL Alpha</value>
</param>
<param>
<key>value</key>
<value>saved_pll_alpha</value>
</param>
<param>
<key>min</key>
<value>0.0</value>
</param>
<param>
<key>max</key>
<value>0.5</value>
</param>
<param>
<key>num_steps</key>
<value>100</value>
</param>
<param>
<key>style</key>
<value>wx.SL_HORIZONTAL</value>
</param>
<param>
<key>converver</key>
<value>float_converter</value>
</param>
<param>
<key>grid_pos</key>
<value>0, 0, 1, 1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(397, 98)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>clock_alpha</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Clock Alpha</value>
</param>
<param>
<key>value</key>
<value>saved_clock_alpha</value>
</param>
<param>
<key>min</key>
<value>0.0</value>
</param>
<param>
<key>max</key>
<value>0.5</value>
</param>
<param>
<key>num_steps</key>
<value>100</value>
</param>
<param>
<key>style</key>
<value>wx.SL_HORIZONTAL</value>
</param>
<param>
<key>converver</key>
<value>float_converter</value>
</param>
<param>
<key>grid_pos</key>
<value>0, 1, 1, 1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(540, 98)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>hs</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>int(sps/2.0)</value>
</param>
<param>
<key>_coordinate</key>
<value>(499, 19)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>max_carrier_offset</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>2*math.pi*100e3/sample_rate</value>
</param>
<param>
<key>_coordinate</key>
<value>(575, 19)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>max_clock_offset</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>100e-6</value>
</param>
<param>
<key>_coordinate</key>
<value>(705, 19)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>output_filename</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>'frames.hrpt'</value>
</param>
<param>
<key>type</key>
<value>string</value>
</param>
<param>
<key>config_file</key>
<value>config_filename</value>
</param>
<param>
<key>section</key>
<value>'usrp_rx_hrpt'</value>
</param>
<param>
<key>option</key>
<value>'filename'</value>
</param>
<param>
<key>writeback</key>
<value>output_filename</value>
</param>
<param>
<key>_coordinate</key>
<value>(521, 254)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>saved_pll_alpha</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>0.01</value>
</param>
<param>
<key>type</key>
<value>real</value>
</param>
<param>
<key>config_file</key>
<value>config_filename</value>
</param>
<param>
<key>section</key>
<value>'usrp_rx_hrpt'</value>
</param>
<param>
<key>option</key>
<value>'pll_alpha'</value>
</param>
<param>
<key>writeback</key>
<value>pll_alpha</value>
</param>
<param>
<key>_coordinate</key>
<value>(195, 253)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>saved_clock_alpha</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>0.01</value>
</param>
<param>
<key>type</key>
<value>real</value>
</param>
<param>
<key>config_file</key>
<value>config_filename</value>
</param>
<param>
<key>section</key>
<value>'usrp_rx_hrpt'</value>
</param>
<param>
<key>option</key>
<value>'clock_alpha'</value>
</param>
<param>
<key>writeback</key>
<value>clock_alpha</value>
</param>
<param>
<key>_coordinate</key>
<value>(360, 255)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>noaa_hrpt_deframer</key>
<param>
<key>id</key>
<value>deframer</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(579, 975)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>noaa_hrpt_decoder</key>
<param>
<key>id</key>
<value>decoder</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>verbose</key>
<value>True</value>
</param>
<param>
<key>output</key>
<value>False</value>
</param>
<param>
<key>_coordinate</key>
<value>(849, 925)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_file_sink</key>
<param>
<key>id</key>
<value>frame_sink</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>file</key>
<value>output_filename</value>
</param>
<param>
<key>type</key>
<value>short</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(848, 1007)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<connection>
<source_block_id>virtual_source_0</source_block_id>
<sink_block_id>gr_binary_slicer_fb_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>deframer</source_block_id>
<sink_block_id>frame_sink</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>deframer</source_block_id>
<sink_block_id>decoder</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_clock_recovery_mm_xx_0</source_block_id>
<sink_block_id>virtual_sink_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_clock_recovery_mm_xx_0</source_block_id>
<sink_block_id>demod_scope</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_moving_average_xx_0</source_block_id>
<sink_block_id>gr_clock_recovery_mm_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>pll</source_block_id>
<sink_block_id>gr_moving_average_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>agc</source_block_id>
<sink_block_id>pll</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>agc</source_block_id>
<sink_block_id>rx_fft</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_interleaved_short_to_complex_0</source_block_id>
<sink_block_id>agc</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>throttle</source_block_id>
<sink_block_id>gr_interleaved_short_to_complex_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_file_source_0</source_block_id>
<sink_block_id>throttle</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_binary_slicer_fb_0</source_block_id>
<sink_block_id>deframer</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
</flow_graph>