pocsagsend.grc

<?xml version='1.0' encoding='utf-8'?>
<?grc format='1' created='3.7.11'?>
<flow_graph>
  <timestamp>Tue Aug 14 22:09:38 2018</timestamp>
  <block>
    <key>options</key>
    <param>
      <key>author</key>
      <value>ON1ARF &amp; Tauebenuss</value>
    </param>
    <param>
      <key>window_size</key>
      <value></value>
    </param>
    <param>
      <key>category</key>
      <value>Custom</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>description</key>
      <value>Sending Pocsag Messages via HACKRF One</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(9, 9)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>generate_options</key>
      <value>no_gui</value>
    </param>
    <param>
      <key>hier_block_src_path</key>
      <value>.:</value>
    </param>
    <param>
      <key>id</key>
      <value>pocsag_sender</value>
    </param>
    <param>
      <key>max_nouts</key>
      <value>0</value>
    </param>
    <param>
      <key>qt_qss_theme</key>
      <value></value>
    </param>
    <param>
      <key>realtime_scheduling</key>
      <value></value>
    </param>
    <param>
      <key>run_command</key>
      <value>{python} -u {filename}</value>
    </param>
    <param>
      <key>run_options</key>
      <value>run</value>
    </param>
    <param>
      <key>run</key>
      <value>True</value>
    </param>
    <param>
      <key>thread_safe_setters</key>
      <value></value>
    </param>
    <param>
      <key>title</key>
      <value>POCSAG Sender via HackRF</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(1106, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>af_gain</value>
    </param>
    <param>
      <key>value</key>
      <value>190</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(400, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>max_deviation</value>
    </param>
    <param>
      <key>value</key>
      <value>4500.0</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(725, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>pagerfreq</value>
    </param>
    <param>
      <key>value</key>
      <value>100880000</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(837, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>pocsagbitrate</value>
    </param>
    <param>
      <key>value</key>
      <value>1200</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(624, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>value</key>
      <value>12000000</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(530, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>symrate</value>
    </param>
    <param>
      <key>value</key>
      <value>38400</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(976, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>tx_gain</value>
    </param>
    <param>
      <key>value</key>
      <value>3</value>
    </param>
  </block>
  <block>
    <key>parameter</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(18, 186)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>RIC</value>
    </param>
    <param>
      <key>label</key>
      <value>RIC</value>
    </param>
    <param>
      <key>short_id</key>
      <value></value>
    </param>
    <param>
      <key>type</key>
      <value>intx</value>
    </param>
    <param>
      <key>value</key>
      <value>1122551</value>
    </param>
  </block>
  <block>
    <key>parameter</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(18, 288)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>SubRIC</value>
    </param>
    <param>
      <key>label</key>
      <value>SubRIC</value>
    </param>
    <param>
      <key>short_id</key>
      <value></value>
    </param>
    <param>
      <key>type</key>
      <value>intx</value>
    </param>
    <param>
      <key>value</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>parameter</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(18, 390)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>Text</value>
    </param>
    <param>
      <key>label</key>
      <value>Text</value>
    </param>
    <param>
      <key>short_id</key>
      <value></value>
    </param>
    <param>
      <key>type</key>
      <value>string</value>
    </param>
    <param>
      <key>value</key>
      <value>Testmessage by HACRF One</value>
    </param>
  </block>
  <block>
    <key>analog_frequency_modulator_fc</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(1060, 144)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>analog_frequency_modulator_fc_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>sensitivity</key>
      <value>2.0 * math.pi * max_deviation / float(symrate)</value>
    </param>
  </block>
  <block>
    <key>blocks_char_to_float</key>
    <param>
      <key>alias</key>
      <value></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>_coordinate</key>
      <value>(902, 144)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_char_to_float_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>scale</key>
      <value>af_gain*0.7/1000</value>
    </param>
    <param>
      <key>vlen</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>blocks_multiply_const_vxx</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>const</key>
      <value>af_gain/100</value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(539, 320)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_multiply_const_vxx_0</value>
    </param>
    <param>
      <key>type</key>
      <value>complex</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>vlen</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>blocks_repeat</key>
    <param>
      <key>alias</key>
      <value></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>_coordinate</key>
      <value>(697, 144)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_repeat_0</value>
    </param>
    <param>
      <key>interp</key>
      <value>symrate/pocsagbitrate</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>type</key>
      <value>byte</value>
    </param>
    <param>
      <key>vlen</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>import</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(297, 23)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>import_0</value>
    </param>
    <param>
      <key>import</key>
      <value>import math</value>
    </param>
  </block>
  <block>
    <key>osmosdr_sink</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>ant0</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain0</key>
      <value>20</value>
    </param>
    <param>
      <key>bw0</key>
      <value>0</value>
    </param>
    <param>
      <key>corr0</key>
      <value>0</value>
    </param>
    <param>
      <key>freq0</key>
      <value>pagerfreq</value>
    </param>
    <param>
      <key>if_gain0</key>
      <value>tx_gain</value>
    </param>
    <param>
      <key>gain0</key>
      <value>0</value>
    </param>
    <param>
      <key>ant10</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain10</key>
      <value>20</value>
    </param>
    <param>
      <key>bw10</key>
      <value>0</value>
    </param>
    <param>
      <key>corr10</key>
      <value>0</value>
    </param>
    <param>
      <key>freq10</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain10</key>
      <value>20</value>
    </param>
    <param>
      <key>gain10</key>
      <value>10</value>
    </param>
    <param>
      <key>ant11</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain11</key>
      <value>20</value>
    </param>
    <param>
      <key>bw11</key>
      <value>0</value>
    </param>
    <param>
      <key>corr11</key>
      <value>0</value>
    </param>
    <param>
      <key>freq11</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain11</key>
      <value>20</value>
    </param>
    <param>
      <key>gain11</key>
      <value>10</value>
    </param>
    <param>
      <key>ant12</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain12</key>
      <value>20</value>
    </param>
    <param>
      <key>bw12</key>
      <value>0</value>
    </param>
    <param>
      <key>corr12</key>
      <value>0</value>
    </param>
    <param>
      <key>freq12</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain12</key>
      <value>20</value>
    </param>
    <param>
      <key>gain12</key>
      <value>10</value>
    </param>
    <param>
      <key>ant13</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain13</key>
      <value>20</value>
    </param>
    <param>
      <key>bw13</key>
      <value>0</value>
    </param>
    <param>
      <key>corr13</key>
      <value>0</value>
    </param>
    <param>
      <key>freq13</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain13</key>
      <value>20</value>
    </param>
    <param>
      <key>gain13</key>
      <value>10</value>
    </param>
    <param>
      <key>ant14</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain14</key>
      <value>20</value>
    </param>
    <param>
      <key>bw14</key>
      <value>0</value>
    </param>
    <param>
      <key>corr14</key>
      <value>0</value>
    </param>
    <param>
      <key>freq14</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain14</key>
      <value>20</value>
    </param>
    <param>
      <key>gain14</key>
      <value>10</value>
    </param>
    <param>
      <key>ant15</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain15</key>
      <value>20</value>
    </param>
    <param>
      <key>bw15</key>
      <value>0</value>
    </param>
    <param>
      <key>corr15</key>
      <value>0</value>
    </param>
    <param>
      <key>freq15</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain15</key>
      <value>20</value>
    </param>
    <param>
      <key>gain15</key>
      <value>10</value>
    </param>
    <param>
      <key>ant16</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain16</key>
      <value>20</value>
    </param>
    <param>
      <key>bw16</key>
      <value>0</value>
    </param>
    <param>
      <key>corr16</key>
      <value>0</value>
    </param>
    <param>
      <key>freq16</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain16</key>
      <value>20</value>
    </param>
    <param>
      <key>gain16</key>
      <value>10</value>
    </param>
    <param>
      <key>ant17</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain17</key>
      <value>20</value>
    </param>
    <param>
      <key>bw17</key>
      <value>0</value>
    </param>
    <param>
      <key>corr17</key>
      <value>0</value>
    </param>
    <param>
      <key>freq17</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain17</key>
      <value>20</value>
    </param>
    <param>
      <key>gain17</key>
      <value>10</value>
    </param>
    <param>
      <key>ant18</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain18</key>
      <value>20</value>
    </param>
    <param>
      <key>bw18</key>
      <value>0</value>
    </param>
    <param>
      <key>corr18</key>
      <value>0</value>
    </param>
    <param>
      <key>freq18</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain18</key>
      <value>20</value>
    </param>
    <param>
      <key>gain18</key>
      <value>10</value>
    </param>
    <param>
      <key>ant19</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain19</key>
      <value>20</value>
    </param>
    <param>
      <key>bw19</key>
      <value>0</value>
    </param>
    <param>
      <key>corr19</key>
      <value>0</value>
    </param>
    <param>
      <key>freq19</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain19</key>
      <value>20</value>
    </param>
    <param>
      <key>gain19</key>
      <value>10</value>
    </param>
    <param>
      <key>ant1</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain1</key>
      <value>20</value>
    </param>
    <param>
      <key>bw1</key>
      <value>0</value>
    </param>
    <param>
      <key>corr1</key>
      <value>0</value>
    </param>
    <param>
      <key>freq1</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain1</key>
      <value>20</value>
    </param>
    <param>
      <key>gain1</key>
      <value>10</value>
    </param>
    <param>
      <key>ant20</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain20</key>
      <value>20</value>
    </param>
    <param>
      <key>bw20</key>
      <value>0</value>
    </param>
    <param>
      <key>corr20</key>
      <value>0</value>
    </param>
    <param>
      <key>freq20</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain20</key>
      <value>20</value>
    </param>
    <param>
      <key>gain20</key>
      <value>10</value>
    </param>
    <param>
      <key>ant21</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain21</key>
      <value>20</value>
    </param>
    <param>
      <key>bw21</key>
      <value>0</value>
    </param>
    <param>
      <key>corr21</key>
      <value>0</value>
    </param>
    <param>
      <key>freq21</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain21</key>
      <value>20</value>
    </param>
    <param>
      <key>gain21</key>
      <value>10</value>
    </param>
    <param>
      <key>ant22</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain22</key>
      <value>20</value>
    </param>
    <param>
      <key>bw22</key>
      <value>0</value>
    </param>
    <param>
      <key>corr22</key>
      <value>0</value>
    </param>
    <param>
      <key>freq22</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain22</key>
      <value>20</value>
    </param>
    <param>
      <key>gain22</key>
      <value>10</value>
    </param>
    <param>
      <key>ant23</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain23</key>
      <value>20</value>
    </param>
    <param>
      <key>bw23</key>
      <value>0</value>
    </param>
    <param>
      <key>corr23</key>
      <value>0</value>
    </param>
    <param>
      <key>freq23</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain23</key>
      <value>20</value>
    </param>
    <param>
      <key>gain23</key>
      <value>10</value>
    </param>
    <param>
      <key>ant24</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain24</key>
      <value>20</value>
    </param>
    <param>
      <key>bw24</key>
      <value>0</value>
    </param>
    <param>
      <key>corr24</key>
      <value>0</value>
    </param>
    <param>
      <key>freq24</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain24</key>
      <value>20</value>
    </param>
    <param>
      <key>gain24</key>
      <value>10</value>
    </param>
    <param>
      <key>ant25</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain25</key>
      <value>20</value>
    </param>
    <param>
      <key>bw25</key>
      <value>0</value>
    </param>
    <param>
      <key>corr25</key>
      <value>0</value>
    </param>
    <param>
      <key>freq25</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain25</key>
      <value>20</value>
    </param>
    <param>
      <key>gain25</key>
      <value>10</value>
    </param>
    <param>
      <key>ant26</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain26</key>
      <value>20</value>
    </param>
    <param>
      <key>bw26</key>
      <value>0</value>
    </param>
    <param>
      <key>corr26</key>
      <value>0</value>
    </param>
    <param>
      <key>freq26</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain26</key>
      <value>20</value>
    </param>
    <param>
      <key>gain26</key>
      <value>10</value>
    </param>
    <param>
      <key>ant27</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain27</key>
      <value>20</value>
    </param>
    <param>
      <key>bw27</key>
      <value>0</value>
    </param>
    <param>
      <key>corr27</key>
      <value>0</value>
    </param>
    <param>
      <key>freq27</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain27</key>
      <value>20</value>
    </param>
    <param>
      <key>gain27</key>
      <value>10</value>
    </param>
    <param>
      <key>ant28</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain28</key>
      <value>20</value>
    </param>
    <param>
      <key>bw28</key>
      <value>0</value>
    </param>
    <param>
      <key>corr28</key>
      <value>0</value>
    </param>
    <param>
      <key>freq28</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain28</key>
      <value>20</value>
    </param>
    <param>
      <key>gain28</key>
      <value>10</value>
    </param>
    <param>
      <key>ant29</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain29</key>
      <value>20</value>
    </param>
    <param>
      <key>bw29</key>
      <value>0</value>
    </param>
    <param>
      <key>corr29</key>
      <value>0</value>
    </param>
    <param>
      <key>freq29</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain29</key>
      <value>20</value>
    </param>
    <param>
      <key>gain29</key>
      <value>10</value>
    </param>
    <param>
      <key>ant2</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain2</key>
      <value>20</value>
    </param>
    <param>
      <key>bw2</key>
      <value>0</value>
    </param>
    <param>
      <key>corr2</key>
      <value>0</value>
    </param>
    <param>
      <key>freq2</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain2</key>
      <value>20</value>
    </param>
    <param>
      <key>gain2</key>
      <value>10</value>
    </param>
    <param>
      <key>ant30</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain30</key>
      <value>20</value>
    </param>
    <param>
      <key>bw30</key>
      <value>0</value>
    </param>
    <param>
      <key>corr30</key>
      <value>0</value>
    </param>
    <param>
      <key>freq30</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain30</key>
      <value>20</value>
    </param>
    <param>
      <key>gain30</key>
      <value>10</value>
    </param>
    <param>
      <key>ant31</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain31</key>
      <value>20</value>
    </param>
    <param>
      <key>bw31</key>
      <value>0</value>
    </param>
    <param>
      <key>corr31</key>
      <value>0</value>
    </param>
    <param>
      <key>freq31</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain31</key>
      <value>20</value>
    </param>
    <param>
      <key>gain31</key>
      <value>10</value>
    </param>
    <param>
      <key>ant3</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain3</key>
      <value>20</value>
    </param>
    <param>
      <key>bw3</key>
      <value>0</value>
    </param>
    <param>
      <key>corr3</key>
      <value>0</value>
    </param>
    <param>
      <key>freq3</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain3</key>
      <value>20</value>
    </param>
    <param>
      <key>gain3</key>
      <value>10</value>
    </param>
    <param>
      <key>ant4</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain4</key>
      <value>20</value>
    </param>
    <param>
      <key>bw4</key>
      <value>0</value>
    </param>
    <param>
      <key>corr4</key>
      <value>0</value>
    </param>
    <param>
      <key>freq4</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain4</key>
      <value>20</value>
    </param>
    <param>
      <key>gain4</key>
      <value>10</value>
    </param>
    <param>
      <key>ant5</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain5</key>
      <value>20</value>
    </param>
    <param>
      <key>bw5</key>
      <value>0</value>
    </param>
    <param>
      <key>corr5</key>
      <value>0</value>
    </param>
    <param>
      <key>freq5</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain5</key>
      <value>20</value>
    </param>
    <param>
      <key>gain5</key>
      <value>10</value>
    </param>
    <param>
      <key>ant6</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain6</key>
      <value>20</value>
    </param>
    <param>
      <key>bw6</key>
      <value>0</value>
    </param>
    <param>
      <key>corr6</key>
      <value>0</value>
    </param>
    <param>
      <key>freq6</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain6</key>
      <value>20</value>
    </param>
    <param>
      <key>gain6</key>
      <value>10</value>
    </param>
    <param>
      <key>ant7</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain7</key>
      <value>20</value>
    </param>
    <param>
      <key>bw7</key>
      <value>0</value>
    </param>
    <param>
      <key>corr7</key>
      <value>0</value>
    </param>
    <param>
      <key>freq7</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain7</key>
      <value>20</value>
    </param>
    <param>
      <key>gain7</key>
      <value>10</value>
    </param>
    <param>
      <key>ant8</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain8</key>
      <value>20</value>
    </param>
    <param>
      <key>bw8</key>
      <value>0</value>
    </param>
    <param>
      <key>corr8</key>
      <value>0</value>
    </param>
    <param>
      <key>freq8</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain8</key>
      <value>20</value>
    </param>
    <param>
      <key>gain8</key>
      <value>10</value>
    </param>
    <param>
      <key>ant9</key>
      <value></value>
    </param>
    <param>
      <key>bb_gain9</key>
      <value>20</value>
    </param>
    <param>
      <key>bw9</key>
      <value>0</value>
    </param>
    <param>
      <key>corr9</key>
      <value>0</value>
    </param>
    <param>
      <key>freq9</key>
      <value>100e6</value>
    </param>
    <param>
      <key>if_gain9</key>
      <value>20</value>
    </param>
    <param>
      <key>gain9</key>
      <value>10</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>args</key>
      <value>hackrf</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(1013, 269)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>osmosdr_sink_0</value>
    </param>
    <param>
      <key>type</key>
      <value>fc32</value>
    </param>
    <param>
      <key>clock_source0</key>
      <value></value>
    </param>
    <param>
      <key>time_source0</key>
      <value></value>
    </param>
    <param>
      <key>clock_source1</key>
      <value></value>
    </param>
    <param>
      <key>time_source1</key>
      <value></value>
    </param>
    <param>
      <key>clock_source2</key>
      <value></value>
    </param>
    <param>
      <key>time_source2</key>
      <value></value>
    </param>
    <param>
      <key>clock_source3</key>
      <value></value>
    </param>
    <param>
      <key>time_source3</key>
      <value></value>
    </param>
    <param>
      <key>clock_source4</key>
      <value></value>
    </param>
    <param>
      <key>time_source4</key>
      <value></value>
    </param>
    <param>
      <key>clock_source5</key>
      <value></value>
    </param>
    <param>
      <key>time_source5</key>
      <value></value>
    </param>
    <param>
      <key>clock_source6</key>
      <value></value>
    </param>
    <param>
      <key>time_source6</key>
      <value></value>
    </param>
    <param>
      <key>clock_source7</key>
      <value></value>
    </param>
    <param>
      <key>time_source7</key>
      <value></value>
    </param>
    <param>
      <key>nchan</key>
      <value>1</value>
    </param>
    <param>
      <key>num_mboards</key>
      <value>1</value>
    </param>
    <param>
      <key>sample_rate</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>sync</key>
      <value></value>
    </param>
  </block>
  <block>
    <key>pfb_arb_resampler_xxx</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(706, 297)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>pfb_arb_resampler_xxx_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>nfilts</key>
      <value>16</value>
    </param>
    <param>
      <key>rrate</key>
      <value>float(samp_rate)/float(symrate)</value>
    </param>
    <param>
      <key>samp_delay</key>
      <value>0</value>
    </param>
    <param>
      <key>atten</key>
      <value>100</value>
    </param>
    <param>
      <key>taps</key>
      <value></value>
    </param>
    <param>
      <key>type</key>
      <value>ccf</value>
    </param>
  </block>
  <block>
    <key>epy_block</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>_io_cache</key>
      <value>('pocsag generator', 'pocsagsender', [('number', '2060073'), ('source', '0'), ('sleeptime', '5'), ('text', "'ON1ARF pocsag Python gnuradio'")], [], [('0', 'byte', 1)], '', ['number', 'sleeptime', 'source'])</value>
    </param>
    <param>
      <key>_source_code</key>
      <value>"""
Embedded Python Blocks:

Each this file is saved, GRC will instantiate the first class it finds to get
ports and parameters of your block. The arguments to __init__  will be the
parameters. All of them are required to have default values!


"""
#gr-pocsag: a gnuradio embedded python block for sending pocsag messages
#-----------------------------------------------------------------------
#
#
#This is the alpha test release of gr-pocsag, a embedded python block for generating and
#sending pocsag message.
#
#The gnu-radio companion example uses a hackRF to send a pocsag-message on 433.900 Mhz.
#
#
#The block generates the bitpattern for a POCSAG-message, broadcasts it once and then going into a loop
#to shut down the transmitter module of the HackRF.
#
#
#The python code itself is located inside the "pocsag generator" epy_block and as a seperate file "gr-pocsagsend.py".
#
#
# (C) Kristoff Bonne, ON1ARF
# GPL v3
#
#Release-information:
#Version: 0.0.1 (20180826)
#Version: 0.0.2 (20180828)
#Version: 0.0.3 (20181006): correction idle pattern and changing "20 bits padding" pattern
#
# 73s . kristoff - ON1ARF


import numpy as np
from gnuradio import gr

from bitstring import BitArray

import time



class pocsagsender(gr.sync_block):
	def __CalculateCRCandParity(self,datatype,data):
		cw=data&lt;&lt;11 

		# make leftmost bit "1" for datatype 1 (text)
		if datatype == 1:
			cw |= 0x80000000
		#end if

		local_cw=cw

		for i in range(21):
			if (cw &amp; 0x80000000) &gt; 0:
				cw ^= 0xED200000
			#end if
			cw &lt;&lt;= 1
		#end for

		local_cw |= (cw &gt;&gt; 21)


		parity=0
		cw=local_cw
		for i in range(32):
			if (cw &amp; 0x80000000) &gt; 0:
				parity += 1
			#end if
			cw &lt;&lt;= 1
		#end for

		# make even parity
		local_cw += (parity % 2)

		return(local_cw)
	# end Calculate CRC and Pairy


	def __createpocsagmsg(self,address,source,txt):

		# checking input
		if not (0 &lt; address &lt;= 0x1fffff):
			raise ValueError(address)
		#end if

		if not (0 &lt;= source &lt;= 3):
			raise ValueError(source)
		#nd if


		if len(txt) == 0:
			raise ValueError(txt)
		#end if


	#	if len(txt) &gt;= 40:
	#		txt=txt[:39]
	#		print("Warning, text truncated to 39 characters: {txt}".format(txt=txt))
		#end if

		# init pocsag message
		# init data
		# 2 batches
		# 1 batch = sync codeword + 8 frames
		# 1 frame = 1 codeword

		syncpattern = 0xAAAAAAAA
		synccodeword = 0x7cd215d8

		idlepattern  = 0x7ac9c197

		# init all codewords with idle pattern: 2 batches = 16 frames = 32 codewords
		codeword = [idlepattern for i in range(32)]


		# part 1: address + source 

		# parse address and source
		addressline=address&gt;&gt;3

		# add address-source
		addressline&lt;&lt;=2
		addressline += source
		# the message starts at the frame address determined by the last 3 bits of the address
		cwnum = ((address % 8) &lt;&lt; 1) # codeword number

		codeword[cwnum]=self.__CalculateCRCandParity(datatype = 0, data = addressline)


		# part 2: text
        
		# 2.1 convert text into int, also add EOT char
		ts=[ord(c) for c in txt] + [0x04] 

		# 2.2 make sure all characers are 7 bit
		ts=list(map(lambda x: x%128, ts))

		# 2.3 create one big list of bits
		textbits=''

		for c in ts:
			# BitArray(uint=c,length=7).bin to convert character to 7-character bit-string)
			# note, for transmission, the bit-order must be reversed
			charbits = BitArray(uint=c,length=7)
			# reverse order of bits
			charbits.reverse()

			# add to total string
			textbits += charbits.bin
		#end for

		nbits=len(textbits)

		# 2.4 make the list of bits  a multiple of 20 bits
		bitstoadd=20-(nbits % 20)

		if bitstoadd == 20:
			bitstoadd = 0
		#end if
		bitstoadd_rest = bitstoadd%2
		bitstoadd_2bit = bitstoadd &gt;&gt; 1
		textbits += '01' * bitstoadd_2bit
		if bitstoadd_rest == 1:
			textbits += '0'
		#end if


		# 2.5 for every block of 20 bits, calculate crc and partity, and add to codeword
		ncw = len(textbits)/20 # number of codewords

		startbit=0
		stopbit=20 # (actually, the 19th bit)
		for i in range(ncw):
			thiscw=textbits[startbit:stopbit]
			thiscw_i=int(thiscw,2) # convert list of bits to int

			#move up all pointers
			startbit=stopbit # stopbit is startbit + 20
			stopbit += 20

			#codeword pointer
			cwnum += 1

			# calculate CRC for a text block (datatype = 1)
			codeword[cwnum]=self.__CalculateCRCandParity(datatype = 1, data = thiscw_i)
		#end for (number of 


		# done

		# now create complete pocsag message
		# sync pattern
		ret = [syncpattern for i in range(18)]
        
		# add sync codeword of 1st batch
		ret.append(synccodeword)

		# add frames 0 to 7 (i.e. codewords 0 to 15)
		ret += [codeword[n] for n in range(16)]


		
		# create add 2nd batch if the text has spilled into the 2nd batch
		if cwnum &gt;=  16:
			# long message, 2 batches
			nbatch=2

			# add sync codeword
			ret.append(synccodeword)
        
			# and add frames 8 to 15 (i.e. codewords 16 to 31)
			ret += [codeword[n] for n in range(16,32)]
		else:
			# short message, 1 batch
			nbatch=1

		#end else - ifif


		return((nbatch,ret))

	# end "createpocsagmsg"


	def __init__(self, number = 2060073, source = 0,  sleeptime= 5, text="ON1ARF pocsag Python gnuradio"):  # only default arguments here
		gr.sync_block.__init__(
			self,
			name='pocsag generator',
			in_sig=[],
			out_sig=[np.int8]
		)


		self.set_output_multiple(640)
			# pocsag messages are either 1 batch (35 codeword = 120 octets), or 2 batches (52 codewords = 208 octets)
			# make the stream a little bit longer to fit a multiple of 20 codewords
			# pocsag message of 1 batch -&gt; add 5 cw -&gt; 40 (= 20 * 2) codewords
			# pocsag message of 2 batches -&gt; add 8 cw -&gt; 60 (=20 *3) codewords
			# 20 cw = 80 octets = 640 bits

		self.state = 0
		self.sleeptime = sleeptime
		self.number= int(number)
		self.source = int(source)


		nbatch,psmsg=self.__createpocsagmsg(number,source,text)

		# for a short message (nbtach=1), add 5 octest = 40 bits
		# for a long message (nbatch=2), add 8 octets = 64 bits

		if nbatch == 1:
			self.pocsagmsg=[0 for i in range(20)]
		elif nbatch == 2:
			self.pocsagmsg=[0 for i in range(32)]
		else:
			raise ValueError(nbatch)
		#end if
			

		for thismsg in psmsg:
			for c in BitArray(uint=thismsg,length=32).bin:
				self.pocsagmsg.append(1 if c == '1' else -1)
		#end for

		# now add tail (all 0)
		if nbatch == 1:
			self.pocsagmsg+=[0 for i in range(20)]
		elif nbatch == 2:
			self.pocsagmsg+=[0 for i in range(32)]
		else:
			raise ValueError(nbatch)
		#end if

		self.msglen=len(self.pocsagmsg)

	#end __init__

	#def forecast(self, noutput_items, ninput_items_required):
	#	#setup size of input_items[i] for work call
	#	for i in range(len(ninput_items_required)):
	#		ninput_items_required[i] = noutput_items

	def work(self, input_items, output_items):

		if self.state == 0:
			# state 0 -&gt; send pocsag message 

			output_items[0][:self.msglen]=np.array(self.pocsagmsg, dtype=np.int8)

			self.state = 1 # after this, go to sleep 
			return self.msglen
		#end if

		# state 1: sleep
		#time.sleep(self.sleeptime)

		# then go back to state 0 (transmit)
		self.state = 0

		return -1 # return without any data
	#end work
# end class "pocsagsender"
</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(427, 120)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>pocsag_generator</value>
    </param>
    <param>
      <key>number</key>
      <value>RIC</value>
    </param>
    <param>
      <key>sleeptime</key>
      <value>5</value>
    </param>
    <param>
      <key>source</key>
      <value>SubRIC</value>
    </param>
    <param>
      <key>text</key>
      <value>Text</value>
    </param>
  </block>
  <connection>
    <source_block_id>analog_frequency_modulator_fc_0</source_block_id>
    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_char_to_float_0</source_block_id>
    <sink_block_id>analog_frequency_modulator_fc_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_repeat_0</source_block_id>
    <sink_block_id>blocks_char_to_float_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
    <sink_block_id>osmosdr_sink_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>pocsag_generator</source_block_id>
    <sink_block_id>blocks_repeat_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
</flow_graph>