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Dishwasha/fm_rx.grc

Created March 28, 2013 22:14
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fm_rx.grc
<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Sun Mar 24 21:47:12 2013</timestamp>
<block>
<key>options</key>
<param>
<key>id</key>
<value>fm_rx</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>title</key>
<value>FM Receiver</value>
</param>
<param>
<key>author</key>
<value>OZ9AEC</value>
</param>
<param>
<key>description</key>
<value>Simple FM receiver prototype</value>
</param>
<param>
<key>window_size</key>
<value>1280, 1024</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>max_nouts</key>
<value>0</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>samp_rate</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>64e6/256</value>
</param>
<param>
<key>_coordinate</key>
<value>(170, 9)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_simple_squelch_cc</key>
<param>
<key>id</key>
<value>gr_simple_squelch_cc_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>threshold</key>
<value>sql_lev</value>
</param>
<param>
<key>alpha</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(882, 336)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>trans</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Trans</value>
</param>
<param>
<key>value</key>
<value>1500</value>
</param>
<param>
<key>min</key>
<value>500</value>
</param>
<param>
<key>max</key>
<value>5000</value>
</param>
<param>
<key>num_steps</key>
<value>900</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>8,0,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(7, 525)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blks2_rational_resampler_xxx</key>
<param>
<key>id</key>
<value>blks2_rational_resampler_xxx_1</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>ccc</value>
</param>
<param>
<key>decim</key>
<value>500</value>
</param>
<param>
<key>interp</key>
<value>441</value>
</param>
<param>
<key>taps</key>
<value>[]</value>
</param>
<param>
<key>fractional_bw</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(257, 502)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>offset_fine</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Fine tune</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>min</key>
<value>-1000</value>
</param>
<param>
<key>max</key>
<value>1000</value>
</param>
<param>
<key>num_steps</key>
<value>400</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>6,0,1,2</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(12, 244)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_chooser</key>
<param>
<key>id</key>
<value>fmn</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>DEV</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>choices</key>
<value>[0,1]</value>
</param>
<param>
<key>labels</key>
<value>['5k','2k5']</value>
</param>
<param>
<key>type</key>
<value>drop_down</value>
</param>
<param>
<key>style</key>
<value>wx.RA_HORIZONTAL</value>
</param>
<param>
<key>grid_pos</key>
<value>8,2,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(11, 813)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blks2_nbfm_rx</key>
<param>
<key>id</key>
<value>nbfm_normal</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>audio_rate</key>
<value>44100</value>
</param>
<param>
<key>quad_rate</key>
<value>44100</value>
</param>
<param>
<key>tau</key>
<value>75e-6</value>
</param>
<param>
<key>max_dev</key>
<value>5e3</value>
</param>
<param>
<key>_coordinate</key>
<value>(481, 502)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blks2_nbfm_rx</key>
<param>
<key>id</key>
<value>nbfm_narrow</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>audio_rate</key>
<value>44100</value>
</param>
<param>
<key>quad_rate</key>
<value>44100</value>
</param>
<param>
<key>tau</key>
<value>75e-6</value>
</param>
<param>
<key>max_dev</key>
<value>2.5e3</value>
</param>
<param>
<key>_coordinate</key>
<value>(485, 599)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blks2_selector</key>
<param>
<key>id</key>
<value>blks2_selector_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param>
<param>
<key>num_inputs</key>
<value>2</value>
</param>
<param>
<key>num_outputs</key>
<value>1</value>
</param>
<param>
<key>input_index</key>
<value>fmn</value>
</param>
<param>
<key>output_index</key>
<value>0</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(724, 558)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_multiply_const_vxx</key>
<param>
<key>id</key>
<value>gr_multiply_const_vxx_1</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>float</value>
</param>
<param>
<key>const</key>
<value>af_gain</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(901, 571)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>audio_sink</key>
<param>
<key>id</key>
<value>audio_sink_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>samp_rate</key>
<value>44100</value>
</param>
<param>
<key>device_name</key>
<value></value>
</param>
<param>
<key>ok_to_block</key>
<value>True</value>
</param>
<param>
<key>num_inputs</key>
<value>2</value>
</param>
<param>
<key>_coordinate</key>
<value>(1091, 541)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>xlate_filter_taps</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>firdes.low_pass(1, samp_rate, 125000, 25000, firdes.WIN_HAMMING, 6.76)</value>
</param>
<param>
<key>_coordinate</key>
<value>(392, 238)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_static_text</key>
<param>
<key>id</key>
<value>lo_freq</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>LO</value>
</param>
<param>
<key>value</key>
<value>LO</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>5,2,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(169, 86)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_chooser</key>
<param>
<key>id</key>
<value>display_selector</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Spectrum</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>choices</key>
<value>[0, 1]</value>
</param>
<param>
<key>labels</key>
<value>['Baseband','USRP']</value>
</param>
<param>
<key>type</key>
<value>drop_down</value>
</param>
<param>
<key>style</key>
<value>wx.RA_HORIZONTAL</value>
</param>
<param>
<key>grid_pos</key>
<value>5,0,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(165, 813)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>LO</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>-10000</value>
</param>
<param>
<key>_coordinate</key>
<value>(268, 9)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_static_text</key>
<param>
<key>id</key>
<value>rx_freq</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Receive</value>
</param>
<param>
<key>value</key>
<value>LO+freq+(offset_coarse+offset_fine)</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>5,3,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(515, 9)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>offset_coarse</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Coarse tune</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>min</key>
<value>-120000</value>
</param>
<param>
<key>max</key>
<value>120000</value>
</param>
<param>
<key>num_steps</key>
<value>960</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>6,2,1,2</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(11, 106)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_freq_xlating_fir_filter_xxx</key>
<param>
<key>id</key>
<value>xlating_fir_filter</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>ccc</value>
</param>
<param>
<key>decim</key>
<value>8</value>
</param>
<param>
<key>taps</key>
<value>xlate_filter_taps</value>
</param>
<param>
<key>center_freq</key>
<value>-(offset_coarse+offset_fine)</value>
</param>
<param>
<key>samp_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>_coordinate</key>
<value>(389, 321)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>rtlsdr_source_c</key>
<param>
<key>id</key>
<value>rtlsdr_source_c_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>fc32</value>
</param>
<param>
<key>args</key>
<value></value>
</param>
<param>
<key>nchan</key>
<value>1</value>
</param>
<param>
<key>sample_rate</key>
<value>samp_rate*8</value>
</param>
<param>
<key>freq0</key>
<value>freq</value>
</param>
<param>
<key>corr0</key>
<value>offset_coarse+offset_fine</value>
</param>
<param>
<key>gain_mode0</key>
<value>0</value>
</param>
<param>
<key>gain0</key>
<value>rf_gain</value>
</param>
<param>
<key>if_gain0</key>
<value>24</value>
</param>
<param>
<key>ant0</key>
<value></value>
</param>
<param>
<key>freq1</key>
<value>100e6</value>
</param>
<param>
<key>corr1</key>
<value>0</value>
</param>
<param>
<key>gain_mode1</key>
<value>0</value>
</param>
<param>
<key>gain1</key>
<value>10</value>
</param>
<param>
<key>if_gain1</key>
<value>24</value>
</param>
<param>
<key>ant1</key>
<value></value>
</param>
<param>
<key>freq2</key>
<value>100e6</value>
</param>
<param>
<key>corr2</key>
<value>0</value>
</param>
<param>
<key>gain_mode2</key>
<value>0</value>
</param>
<param>
<key>gain2</key>
<value>10</value>
</param>
<param>
<key>if_gain2</key>
<value>24</value>
</param>
<param>
<key>ant2</key>
<value></value>
</param>
<param>
<key>freq3</key>
<value>100e6</value>
</param>
<param>
<key>corr3</key>
<value>0</value>
</param>
<param>
<key>gain_mode3</key>
<value>0</value>
</param>
<param>
<key>gain3</key>
<value>10</value>
</param>
<param>
<key>if_gain3</key>
<value>24</value>
</param>
<param>
<key>ant3</key>
<value></value>
</param>
<param>
<key>freq4</key>
<value>100e6</value>
</param>
<param>
<key>corr4</key>
<value>0</value>
</param>
<param>
<key>gain_mode4</key>
<value>0</value>
</param>
<param>
<key>gain4</key>
<value>10</value>
</param>
<param>
<key>if_gain4</key>
<value>24</value>
</param>
<param>
<key>ant4</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(153, 322)</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>USRP</value>
</param>
<param>
<key>value</key>
<value>146940000</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>5,1,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(364, 8)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>osmosdr_source_c</key>
<param>
<key>id</key>
<value>osmosdr_source_c_0</value>
</param>
<param>
<key>_enabled</key>
<value>False</value>
</param>
<param>
<key>type</key>
<value>fc32</value>
</param>
<param>
<key>args</key>
<value>rtl_tcp=127.0.0.1:1234</value>
</param>
<param>
<key>nchan</key>
<value>1</value>
</param>
<param>
<key>sample_rate</key>
<value>samp_rate*8</value>
</param>
<param>
<key>freq0</key>
<value>freq</value>
</param>
<param>
<key>corr0</key>
<value>offset_coarse + offset_fine</value>
</param>
<param>
<key>gain_mode0</key>
<value>0</value>
</param>
<param>
<key>gain0</key>
<value>rf_gain</value>
</param>
<param>
<key>if_gain0</key>
<value>24</value>
</param>
<param>
<key>ant0</key>
<value></value>
</param>
<param>
<key>freq1</key>
<value>100e6</value>
</param>
<param>
<key>corr1</key>
<value>0</value>
</param>
<param>
<key>gain_mode1</key>
<value>0</value>
</param>
<param>
<key>gain1</key>
<value>10</value>
</param>
<param>
<key>if_gain1</key>
<value>24</value>
</param>
<param>
<key>ant1</key>
<value></value>
</param>
<param>
<key>freq2</key>
<value>100e6</value>
</param>
<param>
<key>corr2</key>
<value>0</value>
</param>
<param>
<key>gain_mode2</key>
<value>0</value>
</param>
<param>
<key>gain2</key>
<value>10</value>
</param>
<param>
<key>if_gain2</key>
<value>24</value>
</param>
<param>
<key>ant2</key>
<value></value>
</param>
<param>
<key>freq3</key>
<value>100e6</value>
</param>
<param>
<key>corr3</key>
<value>0</value>
</param>
<param>
<key>gain_mode3</key>
<value>0</value>
</param>
<param>
<key>gain3</key>
<value>10</value>
</param>
<param>
<key>if_gain3</key>
<value>24</value>
</param>
<param>
<key>ant3</key>
<value></value>
</param>
<param>
<key>freq4</key>
<value>100e6</value>
</param>
<param>
<key>corr4</key>
<value>0</value>
</param>
<param>
<key>gain_mode4</key>
<value>0</value>
</param>
<param>
<key>gain4</key>
<value>10</value>
</param>
<param>
<key>if_gain4</key>
<value>24</value>
</param>
<param>
<key>ant4</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(158, 159)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>wxgui_fftsink2</key>
<param>
<key>id</key>
<value>fftsink</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>title</key>
<value></value>
</param>
<param>
<key>samp_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>baseband_freq</key>
<value>rx_freq*display_selector</value>
</param>
<param>
<key>y_per_div</key>
<value>10</value>
</param>
<param>
<key>y_divs</key>
<value>10</value>
</param>
<param>
<key>ref_level</key>
<value>0</value>
</param>
<param>
<key>ref_scale</key>
<value>13490.0</value>
</param>
<param>
<key>fft_size</key>
<value>512</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>0.5</value>
</param>
<param>
<key>win</key>
<value>None</value>
</param>
<param>
<key>win_size</key>
<value>800,300</value>
</param>
<param>
<key>grid_pos</key>
<value>0,0,5,4</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>freqvar</key>
<value>None</value>
</param>
<param>
<key>_coordinate</key>
<value>(673, 46)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>low_pass_filter</key>
<param>
<key>id</key>
<value>low_pass_filter</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>fir_filter_ccf</value>
</param>
<param>
<key>decim</key>
<value>5</value>
</param>
<param>
<key>interp</key>
<value>1</value>
</param>
<param>
<key>gain</key>
<value>5</value>
</param>
<param>
<key>samp_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>cutoff_freq</key>
<value>width/2</value>
</param>
<param>
<key>width</key>
<value>trans</value>
</param>
<param>
<key>win</key>
<value>firdes.WIN_HAMMING</value>
</param>
<param>
<key>beta</key>
<value>6.76</value>
</param>
<param>
<key>_coordinate</key>
<value>(675, 295)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>rf_gain</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>RF</value>
</param>
<param>
<key>value</key>
<value>50</value>
</param>
<param>
<key>min</key>
<value>0</value>
</param>
<param>
<key>max</key>
<value>50</value>
</param>
<param>
<key>num_steps</key>
<value>50</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>7,1,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(7, 669)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>af_gain</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>VOL</value>
</param>
<param>
<key>value</key>
<value>3</value>
</param>
<param>
<key>min</key>
<value>0</value>
</param>
<param>
<key>max</key>
<value>5</value>
</param>
<param>
<key>num_steps</key>
<value>50</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>8,1,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(142, 671)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>sql_lev</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>SQL</value>
</param>
<param>
<key>value</key>
<value>-10</value>
</param>
<param>
<key>min</key>
<value>-100</value>
</param>
<param>
<key>max</key>
<value>100</value>
</param>
<param>
<key>num_steps</key>
<value>200</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>7,2,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(280, 672)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>width</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Filter</value>
</param>
<param>
<key>value</key>
<value>25000</value>
</param>
<param>
<key>min</key>
<value>2000</value>
</param>
<param>
<key>max</key>
<value>40000</value>
</param>
<param>
<key>num_steps</key>
<value>760</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>7,0,1,1</value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(10, 386)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<connection>
<source_block_id>xlating_fir_filter</source_block_id>
<sink_block_id>fftsink</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blks2_rational_resampler_xxx_1</source_block_id>
<sink_block_id>nbfm_normal</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_simple_squelch_cc_0</source_block_id>
<sink_block_id>blks2_rational_resampler_xxx_1</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>xlating_fir_filter</source_block_id>
<sink_block_id>low_pass_filter</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>low_pass_filter</source_block_id>
<sink_block_id>gr_simple_squelch_cc_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_multiply_const_vxx_1</source_block_id>
<sink_block_id>audio_sink_0</sink_block_id>
<source_key>0</source_key>
<sink_key>1</sink_key>
</connection>
<connection>
<source_block_id>gr_multiply_const_vxx_1</source_block_id>
<sink_block_id>audio_sink_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blks2_rational_resampler_xxx_1</source_block_id>
<sink_block_id>nbfm_narrow</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>nbfm_normal</source_block_id>
<sink_block_id>blks2_selector_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>nbfm_narrow</source_block_id>
<sink_block_id>blks2_selector_0</sink_block_id>
<source_key>0</source_key>
<sink_key>1</sink_key>
</connection>
<connection>
<source_block_id>blks2_selector_0</source_block_id>
<sink_block_id>gr_multiply_const_vxx_1</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>osmosdr_source_c_0</source_block_id>
<sink_block_id>xlating_fir_filter</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>rtlsdr_source_c_0</source_block_id>
<sink_block_id>xlating_fir_filter</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
</flow_graph>
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