<?xml version='1.0' encoding='ASCII'?> <flow_graph> <timestamp>Mon Nov 9 07:56:11 2009</timestamp> <block> <key>options</key> <param> <key>id</key> <value>usrp_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>prompt</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>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>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>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>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>variable_slider</key> <param> <key>id</key> <value>gain</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>RX Gain</value> </param> <param> <key>value</key> <value>saved_gain</value> </param> <param> <key>min</key> <value>0</value> </param> <param> <key>max</key> <value>100</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>(340, 106)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_text_box</key> <param> <key>id</key> <value>freq</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Frequency</value> </param> <param> <key>value</key> <value>saved_freq</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>formatter</key> <value>None</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>(199, 106)</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, 2, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(479, 106)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_static_text</key> <param> <key>id</key> <value>side_text</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>USRP Side</value> </param> <param> <key>value</key> <value>side</value> </param> <param> <key>converver</key> <value>str_converter</value> </param> <param> <key>formatter</key> <value>None</value> </param> <param> <key>grid_pos</key> <value>1, 0, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(828, 20)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_static_text</key> <param> <key>id</key> <value>decim_text</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Decimation</value> </param> <param> <key>value</key> <value>decim</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>formatter</key> <value>None</value> </param> <param> <key>grid_pos</key> <value>1, 1, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(973, 20)</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>(12, 129)</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, 76)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_config</key> <param> <key>id</key> <value>saved_freq</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>1698e6</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>'freq'</value> </param> <param> <key>writeback</key> <value>freq</value> </param> <param> <key>_coordinate</key> <value>(507, 258)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_config</key> <param> <key>id</key> <value>saved_gain</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>35</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>'gain'</value> </param> <param> <key>writeback</key> <value>gain</value> </param> <param> <key>_coordinate</key> <value>(664, 259)</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, 3, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(618, 106)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_config</key> <param> <key>id</key> <value>side</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>'A'</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>'side'</value> </param> <param> <key>writeback</key> <value>side</value> </param> <param> <key>_coordinate</key> <value>(194, 253)</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>2,0,1,4</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>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>(973, 1024)</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>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>usrp_simple_source_x</key> <param> <key>id</key> <value>usrp_source</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>format</key> <value></value> </param> <param> <key>which</key> <value>0</value> </param> <param> <key>decimation</key> <value>decim</value> </param> <param> <key>frequency</key> <value>freq</value> </param> <param> <key>lo_offset</key> <value>float('inf')</value> </param> <param> <key>gain</key> <value>gain</value> </param> <param> <key>side</key> <value>side</value> </param> <param> <key>rx_ant</key> <value>RXA</value> </param> <param> <key>hb_filters</key> <value></value> </param> <param> <key>_coordinate</key> <value>(89, 689)</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>freq</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>(477, 457)</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>noaa_hrpt_deframer</key> <param> <key>id</key> <value>deframer</value> </param> <param> <key>_enabled</key> 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<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>(823, 258)</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> 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