<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Sun Sep 27 10:13:25 2009</timestamp>
<block>
<key>options</key>
<param>
<key>id</key>
<value>usrp_rx_hrpt_nogui</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>no_gui</value>
</param>
<param>
<key>category</key>
<value>Custom</value>
</param>
<param>
<key>run</key>
<value>True</value>
</param>
<param>
<key>realtime_scheduling</key>
<value>1</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</key>
<param>
<key>id</key>
<value>max_sync_offset</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>0.01</value>
</param>
<param>
<key>_coordinate</key>
<value>(705, 19)</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>'usrp_rx_hrpt.cfg'</value>
</param>
<param>
<key>_coordinate</key>
<value>(12, 167)</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</value>
</param>
<param>
<key>_coordinate</key>
<value>(11, 112)</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.dat'</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>'output'</value>
</param>
<param>
<key>option</key>
<value>'filename'</value>
</param>
<param>
<key>writeback</key>
<value>output_filename</value>
</param>
<param>
<key>_coordinate</key>
<value>(1146, 122)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>sync_alpha</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>0.05</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>'demod'</value>
</param>
<param>
<key>option</key>
<value>'sync_alpha'</value>
</param>
<param>
<key>writeback</key>
<value>sync_alpha</value>
</param>
<param>
<key>_coordinate</key>
<value>(988, 121)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>pll_alpha</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>0.05</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>'demod'</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>(830, 121)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>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'</value>
</param>
<param>
<key>option</key>
<value>'gain'</value>
</param>
<param>
<key>writeback</key>
<value>gain</value>
</param>
<param>
<key>_coordinate</key>
<value>(671, 122)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>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'</value>
</param>
<param>
<key>option</key>
<value>'freq'</value>
</param>
<param>
<key>writeback</key>
<value>freq</value>
</param>
<param>
<key>_coordinate</key>
<value>(514, 121)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>decim</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>16</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'</value>
</param>
<param>
<key>option</key>
<value>'decim'</value>
</param>
<param>
<key>writeback</key>
<value>decim</value>
</param>
<param>
<key>_coordinate</key>
<value>(358, 118)</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'</value>
</param>
<param>
<key>option</key>
<value>'side'</value>
</param>
<param>
<key>writeback</key>
<value>side</value>
</param>
<param>
<key>_coordinate</key>
<value>(201, 116)</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>_coordinate</key>
<value>(1247, 347)</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>(29, 303)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>mf_taps</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>[-0.5/hs,]*hs+[0.5/hs,]*hs</value>
</param>
<param>
<key>_coordinate</key>
<value>(825, 19)</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>(246, 319)</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>(1060, 347)</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>(1251, 454)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>noaa_hrpt_sync_fb</key>
<param>
<key>id</key>
<value>sync</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>alpha</key>
<value>sync_alpha</value>
</param>
<param>
<key>beta</key>
<value>sync_alpha**2/4.0</value>
</param>
<param>
<key>sps</key>
<value>sps</value>
</param>
<param>
<key>max_offset</key>
<value>max_sync_offset</value>
</param>
<param>
<key>_coordinate</key>
<value>(833, 319)</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>(638, 327)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_fir_filter_xxx</key>
<param>
<key>id</key>
<value>gr_fir_filter_xxx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>ccc</value>
</param>
<param>
<key>decim</key>
<value>1</value>
</param>
<param>
<key>taps</key>
<value>mf_taps</value>
</param>
<param>
<key>_coordinate</key>
<value>(402, 335)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<connection>
<source_block_id>usrp_source</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>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>pll</source_block_id>
<sink_block_id>sync</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>sync</source_block_id>
<sink_block_id>deframer</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>agc</source_block_id>
<sink_block_id>gr_fir_filter_xxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_fir_filter_xxx_0</source_block_id>
<sink_block_id>pll</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
</flow_graph>