writeups/astra/overthewire2019/solution_minified.grc

   1 <?xml version='1.0' encoding='utf-8'?>
   2 <?grc format='1' created='3.7.13'?>
   3 <flow_graph>
   4   <timestamp>Thu Aug 28 08:24:49 2014</timestamp>
   5   <block>
   6     <key>options</key>
   7     <param>
   8       <key>author</key>
   9       <value></value>
  10     </param>
  11     <param>
  12       <key>window_size</key>
  13       <value>1600, 3200</value>
  14     </param>
  15     <param>
  16       <key>category</key>
  17       <value>Custom</value>
  18     </param>
  19     <param>
  20       <key>comment</key>
  21       <value></value>
  22     </param>
  23     <param>
  24       <key>description</key>
  25       <value></value>
  26     </param>
  27     <param>
  28       <key>_enabled</key>
  29       <value>True</value>
  30     </param>
  31     <param>
  32       <key>_coordinate</key>
  33       <value>(14, 9)</value>
  34     </param>
  35     <param>
  36       <key>_rotation</key>
  37       <value>0</value>
  38     </param>
  39     <param>
  40       <key>generate_options</key>
  41       <value>wx_gui</value>
  42     </param>
  43     <param>
  44       <key>hier_block_src_path</key>
  45       <value>.:</value>
  46     </param>
  47     <param>
  48       <key>id</key>
  49       <value>rds_rx</value>
  50     </param>
  51     <param>
  52       <key>max_nouts</key>
  53       <value>0</value>
  54     </param>
  55     <param>
  56       <key>qt_qss_theme</key>
  57       <value></value>
  58     </param>
  59     <param>
  60       <key>realtime_scheduling</key>
  61       <value></value>
  62     </param>
  63     <param>
  64       <key>run_command</key>
  65       <value>{python} -u {filename}</value>
  66     </param>
  67     <param>
  68       <key>run_options</key>
  69       <value>prompt</value>
  70     </param>
  71     <param>
  72       <key>run</key>
  73       <value>True</value>
  74     </param>
  75     <param>
  76       <key>sizing_mode</key>
  77       <value>fixed</value>
  78     </param>
  79     <param>
  80       <key>thread_safe_setters</key>
  81       <value></value>
  82     </param>
  83     <param>
  84       <key>title</key>
  85       <value>Stereo FM receiver and RDS Decoder</value>
  86     </param>
  87     <param>
  88       <key>placement</key>
  89       <value>(0,0)</value>
  90     </param>
  91   </block>
  92   <block>
  93     <key>variable</key>
  94     <param>
  95       <key>comment</key>
  96       <value></value>
  97     </param>
  98     <param>
  99       <key>_enabled</key>
 100       <value>True</value>
 101     </param>
 102     <param>
 103       <key>_coordinate</key>
 104       <value>(432, 24)</value>
 105     </param>
 106     <param>
 107       <key>_rotation</key>
 108       <value>0</value>
 109     </param>
 110     <param>
 111       <key>id</key>
 112       <value>freq_offset</value>
 113     </param>
 114     <param>
 115       <key>value</key>
 116       <value>250000</value>
 117     </param>
 118   </block>
 119   <block>
 120     <key>variable</key>
 121     <param>
 122       <key>comment</key>
 123       <value></value>
 124     </param>
 125     <param>
 126       <key>_enabled</key>
 127       <value>True</value>
 128     </param>
 129     <param>
 130       <key>_coordinate</key>
 131       <value>(280, 24)</value>
 132     </param>
 133     <param>
 134       <key>_rotation</key>
 135       <value>0</value>
 136     </param>
 137     <param>
 138       <key>id</key>
 139       <value>samp_rate</value>
 140     </param>
 141     <param>
 142       <key>value</key>
 143       <value>1e6</value>
 144     </param>
 145   </block>
 146   <block>
 147     <key>analog_fm_deemph</key>
 148     <param>
 149       <key>alias</key>
 150       <value></value>
 151     </param>
 152     <param>
 153       <key>comment</key>
 154       <value></value>
 155     </param>
 156     <param>
 157       <key>affinity</key>
 158       <value></value>
 159     </param>
 160     <param>
 161       <key>_enabled</key>
 162       <value>True</value>
 163     </param>
 164     <param>
 165       <key>_coordinate</key>
 166       <value>(1104, 496)</value>
 167     </param>
 168     <param>
 169       <key>_rotation</key>
 170       <value>270</value>
 171     </param>
 172     <param>
 173       <key>id</key>
 174       <value>analog_fm_deemph_0_0</value>
 175     </param>
 176     <param>
 177       <key>maxoutbuf</key>
 178       <value>0</value>
 179     </param>
 180     <param>
 181       <key>minoutbuf</key>
 182       <value>0</value>
 183     </param>
 184     <param>
 185       <key>samp_rate</key>
 186       <value>48000</value>
 187     </param>
 188     <param>
 189       <key>tau</key>
 190       <value>75e-6</value>
 191     </param>
 192   </block>
 193   <block>
 194     <key>analog_fm_deemph</key>
 195     <param>
 196       <key>alias</key>
 197       <value></value>
 198     </param>
 199     <param>
 200       <key>comment</key>
 201       <value></value>
 202     </param>
 203     <param>
 204       <key>affinity</key>
 205       <value></value>
 206     </param>
 207     <param>
 208       <key>_enabled</key>
 209       <value>True</value>
 210     </param>
 211     <param>
 212       <key>_coordinate</key>
 213       <value>(1192, 496)</value>
 214     </param>
 215     <param>
 216       <key>_rotation</key>
 217       <value>270</value>
 218     </param>
 219     <param>
 220       <key>id</key>
 221       <value>analog_fm_deemph_0_0_0</value>
 222     </param>
 223     <param>
 224       <key>maxoutbuf</key>
 225       <value>0</value>
 226     </param>
 227     <param>
 228       <key>minoutbuf</key>
 229       <value>0</value>
 230     </param>
 231     <param>
 232       <key>samp_rate</key>
 233       <value>48000</value>
 234     </param>
 235     <param>
 236       <key>tau</key>
 237       <value>75e-6</value>
 238     </param>
 239   </block>
 240   <block>
 241     <key>analog_sig_source_x</key>
 242     <param>
 243       <key>amp</key>
 244       <value>1</value>
 245     </param>
 246     <param>
 247       <key>alias</key>
 248       <value></value>
 249     </param>
 250     <param>
 251       <key>comment</key>
 252       <value></value>
 253     </param>
 254     <param>
 255       <key>affinity</key>
 256       <value></value>
 257     </param>
 258     <param>
 259       <key>_enabled</key>
 260       <value>True</value>
 261     </param>
 262     <param>
 263       <key>freq</key>
 264       <value>300000</value>
 265     </param>
 266     <param>
 267       <key>_coordinate</key>
 268       <value>(464, 148)</value>
 269     </param>
 270     <param>
 271       <key>_rotation</key>
 272       <value>180</value>
 273     </param>
 274     <param>
 275       <key>id</key>
 276       <value>analog_sig_source_x_0</value>
 277     </param>
 278     <param>
 279       <key>maxoutbuf</key>
 280       <value>0</value>
 281     </param>
 282     <param>
 283       <key>minoutbuf</key>
 284       <value>0</value>
 285     </param>
 286     <param>
 287       <key>offset</key>
 288       <value>0</value>
 289     </param>
 290     <param>
 291       <key>type</key>
 292       <value>complex</value>
 293     </param>
 294     <param>
 295       <key>samp_rate</key>
 296       <value>samp_rate</value>
 297     </param>
 298     <param>
 299       <key>waveform</key>
 300       <value>analog.GR_COS_WAVE</value>
 301     </param>
 302   </block>
 303   <block>
 304     <key>analog_wfm_rcv</key>
 305     <param>
 306       <key>audio_decimation</key>
 307       <value>int(samp_rate/(250e3))</value>
 308     </param>
 309     <param>
 310       <key>alias</key>
 311       <value></value>
 312     </param>
 313     <param>
 314       <key>comment</key>
 315       <value></value>
 316     </param>
 317     <param>
 318       <key>affinity</key>
 319       <value></value>
 320     </param>
 321     <param>
 322       <key>_enabled</key>
 323       <value>True</value>
 324     </param>
 325     <param>
 326       <key>_coordinate</key>
 327       <value>(464, 352)</value>
 328     </param>
 329     <param>
 330       <key>_rotation</key>
 331       <value>0</value>
 332     </param>
 333     <param>
 334       <key>id</key>
 335       <value>analog_wfm_rcv_0</value>
 336     </param>
 337     <param>
 338       <key>maxoutbuf</key>
 339       <value>0</value>
 340     </param>
 341     <param>
 342       <key>minoutbuf</key>
 343       <value>0</value>
 344     </param>
 345     <param>
 346       <key>quad_rate</key>
 347       <value>samp_rate</value>
 348     </param>
 349   </block>
 350   <block>
 351     <key>audio_sink</key>
 352     <param>
 353       <key>alias</key>
 354       <value></value>
 355     </param>
 356     <param>
 357       <key>comment</key>
 358       <value></value>
 359     </param>
 360     <param>
 361       <key>affinity</key>
 362       <value></value>
 363     </param>
 364     <param>
 365       <key>device_name</key>
 366       <value></value>
 367     </param>
 368     <param>
 369       <key>_enabled</key>
 370       <value>True</value>
 371     </param>
 372     <param>
 373       <key>_coordinate</key>
 374       <value>(1304, 860)</value>
 375     </param>
 376     <param>
 377       <key>_rotation</key>
 378       <value>180</value>
 379     </param>
 380     <param>
 381       <key>id</key>
 382       <value>audio_sink_0</value>
 383     </param>
 384     <param>
 385       <key>num_inputs</key>
 386       <value>2</value>
 387     </param>
 388     <param>
 389       <key>ok_to_block</key>
 390       <value>True</value>
 391     </param>
 392     <param>
 393       <key>samp_rate</key>
 394       <value>48000</value>
 395     </param>
 396   </block>
 397   <block>
 398     <key>blocks_add_xx</key>
 399     <param>
 400       <key>alias</key>
 401       <value></value>
 402     </param>
 403     <param>
 404       <key>comment</key>
 405       <value></value>
 406     </param>
 407     <param>
 408       <key>affinity</key>
 409       <value></value>
 410     </param>
 411     <param>
 412       <key>_enabled</key>
 413       <value>True</value>
 414     </param>
 415     <param>
 416       <key>_coordinate</key>
 417       <value>(1204, 344)</value>
 418     </param>
 419     <param>
 420       <key>_rotation</key>
 421       <value>270</value>
 422     </param>
 423     <param>
 424       <key>id</key>
 425       <value>blocks_add_xx_0</value>
 426     </param>
 427     <param>
 428       <key>type</key>
 429       <value>float</value>
 430     </param>
 431     <param>
 432       <key>maxoutbuf</key>
 433       <value>0</value>
 434     </param>
 435     <param>
 436       <key>minoutbuf</key>
 437       <value>0</value>
 438     </param>
 439     <param>
 440       <key>num_inputs</key>
 441       <value>2</value>
 442     </param>
 443     <param>
 444       <key>vlen</key>
 445       <value>1</value>
 446     </param>
 447   </block>
 448   <block>
 449     <key>blocks_complex_to_real</key>
 450     <param>
 451       <key>alias</key>
 452       <value></value>
 453     </param>
 454     <param>
 455       <key>comment</key>
 456       <value></value>
 457     </param>
 458     <param>
 459       <key>affinity</key>
 460       <value></value>
 461     </param>
 462     <param>
 463       <key>_enabled</key>
 464       <value>True</value>
 465     </param>
 466     <param>
 467       <key>_coordinate</key>
 468       <value>(1320, 236)</value>
 469     </param>
 470     <param>
 471       <key>_rotation</key>
 472       <value>0</value>
 473     </param>
 474     <param>
 475       <key>id</key>
 476       <value>blocks_complex_to_real_0</value>
 477     </param>
 478     <param>
 479       <key>maxoutbuf</key>
 480       <value>0</value>
 481     </param>
 482     <param>
 483       <key>minoutbuf</key>
 484       <value>0</value>
 485     </param>
 486     <param>
 487       <key>vlen</key>
 488       <value>1</value>
 489     </param>
 490   </block>
 491   <block>
 492     <key>blocks_file_source</key>
 493     <param>
 494       <key>begin_tag</key>
 495       <value>pmt.PMT_NIL</value>
 496     </param>
 497     <param>
 498       <key>alias</key>
 499       <value></value>
 500     </param>
 501     <param>
 502       <key>comment</key>
 503       <value></value>
 504     </param>
 505     <param>
 506       <key>affinity</key>
 507       <value></value>
 508     </param>
 509     <param>
 510       <key>_enabled</key>
 511       <value>True</value>
 512     </param>
 513     <param>
 514       <key>file</key>
 515       <value>/home/astra/ctf_northpole_airwaves/airwaves.bin</value>
 516     </param>
 517     <param>
 518       <key>_coordinate</key>
 519       <value>(24, 156)</value>
 520     </param>
 521     <param>
 522       <key>_rotation</key>
 523       <value>0</value>
 524     </param>
 525     <param>
 526       <key>id</key>
 527       <value>blocks_file_source_0</value>
 528     </param>
 529     <param>
 530       <key>maxoutbuf</key>
 531       <value>0</value>
 532     </param>
 533     <param>
 534       <key>minoutbuf</key>
 535       <value>0</value>
 536     </param>
 537     <param>
 538       <key>type</key>
 539       <value>complex</value>
 540     </param>
 541     <param>
 542       <key>repeat</key>
 543       <value>True</value>
 544     </param>
 545     <param>
 546       <key>vlen</key>
 547       <value>1</value>
 548     </param>
 549   </block>
 550   <block>
 551     <key>blocks_keep_one_in_n</key>
 552     <param>
 553       <key>alias</key>
 554       <value></value>
 555     </param>
 556     <param>
 557       <key>comment</key>
 558       <value></value>
 559     </param>
 560     <param>
 561       <key>affinity</key>
 562       <value></value>
 563     </param>
 564     <param>
 565       <key>_enabled</key>
 566       <value>1</value>
 567     </param>
 568     <param>
 569       <key>_coordinate</key>
 570       <value>(680, 868)</value>
 571     </param>
 572     <param>
 573       <key>_rotation</key>
 574       <value>180</value>
 575     </param>
 576     <param>
 577       <key>id</key>
 578       <value>blocks_keep_one_in_n_0</value>
 579     </param>
 580     <param>
 581       <key>maxoutbuf</key>
 582       <value>0</value>
 583     </param>
 584     <param>
 585       <key>minoutbuf</key>
 586       <value>0</value>
 587     </param>
 588     <param>
 589       <key>n</key>
 590       <value>2</value>
 591     </param>
 592     <param>
 593       <key>type</key>
 594       <value>byte</value>
 595     </param>
 596     <param>
 597       <key>vlen</key>
 598       <value>1</value>
 599     </param>
 600   </block>
 601   <block>
 602     <key>blocks_multiply_const_vxx</key>
 603     <param>
 604       <key>alias</key>
 605       <value></value>
 606     </param>
 607     <param>
 608       <key>comment</key>
 609       <value></value>
 610     </param>
 611     <param>
 612       <key>const</key>
 613       <value>10**(1.*(-3)/10)</value>
 614     </param>
 615     <param>
 616       <key>affinity</key>
 617       <value></value>
 618     </param>
 619     <param>
 620       <key>_enabled</key>
 621       <value>True</value>
 622     </param>
 623     <param>
 624       <key>_coordinate</key>
 625       <value>(1312, 668)</value>
 626     </param>
 627     <param>
 628       <key>_rotation</key>
 629       <value>0</value>
 630     </param>
 631     <param>
 632       <key>id</key>
 633       <value>blocks_multiply_const_vxx_0</value>
 634     </param>
 635     <param>
 636       <key>type</key>
 637       <value>float</value>
 638     </param>
 639     <param>
 640       <key>maxoutbuf</key>
 641       <value>0</value>
 642     </param>
 643     <param>
 644       <key>minoutbuf</key>
 645       <value>0</value>
 646     </param>
 647     <param>
 648       <key>vlen</key>
 649       <value>1</value>
 650     </param>
 651   </block>
 652   <block>
 653     <key>blocks_multiply_const_vxx</key>
 654     <param>
 655       <key>alias</key>
 656       <value></value>
 657     </param>
 658     <param>
 659       <key>comment</key>
 660       <value></value>
 661     </param>
 662     <param>
 663       <key>const</key>
 664       <value>10**(1.*(-3)/10)</value>
 665     </param>
 666     <param>
 667       <key>affinity</key>
 668       <value></value>
 669     </param>
 670     <param>
 671       <key>_enabled</key>
 672       <value>True</value>
 673     </param>
 674     <param>
 675       <key>_coordinate</key>
 676       <value>(1312, 748)</value>
 677     </param>
 678     <param>
 679       <key>_rotation</key>
 680       <value>0</value>
 681     </param>
 682     <param>
 683       <key>id</key>
 684       <value>blocks_multiply_const_vxx_0_0</value>
 685     </param>
 686     <param>
 687       <key>type</key>
 688       <value>float</value>
 689     </param>
 690     <param>
 691       <key>maxoutbuf</key>
 692       <value>0</value>
 693     </param>
 694     <param>
 695       <key>minoutbuf</key>
 696       <value>0</value>
 697     </param>
 698     <param>
 699       <key>vlen</key>
 700       <value>1</value>
 701     </param>
 702   </block>
 703   <block>
 704     <key>blocks_multiply_xx</key>
 705     <param>
 706       <key>alias</key>
 707       <value></value>
 708     </param>
 709     <param>
 710       <key>comment</key>
 711       <value></value>
 712     </param>
 713     <param>
 714       <key>affinity</key>
 715       <value></value>
 716     </param>
 717     <param>
 718       <key>_enabled</key>
 719       <value>True</value>
 720     </param>
 721     <param>
 722       <key>_coordinate</key>
 723       <value>(340, 184)</value>
 724     </param>
 725     <param>
 726       <key>_rotation</key>
 727       <value>270</value>
 728     </param>
 729     <param>
 730       <key>id</key>
 731       <value>blocks_multiply_xx_0</value>
 732     </param>
 733     <param>
 734       <key>type</key>
 735       <value>complex</value>
 736     </param>
 737     <param>
 738       <key>maxoutbuf</key>
 739       <value>0</value>
 740     </param>
 741     <param>
 742       <key>minoutbuf</key>
 743       <value>0</value>
 744     </param>
 745     <param>
 746       <key>num_inputs</key>
 747       <value>2</value>
 748     </param>
 749     <param>
 750       <key>vlen</key>
 751       <value>1</value>
 752     </param>
 753   </block>
 754   <block>
 755     <key>blocks_sub_xx</key>
 756     <param>
 757       <key>alias</key>
 758       <value></value>
 759     </param>
 760     <param>
 761       <key>comment</key>
 762       <value></value>
 763     </param>
 764     <param>
 765       <key>affinity</key>
 766       <value></value>
 767     </param>
 768     <param>
 769       <key>_enabled</key>
 770       <value>True</value>
 771     </param>
 772     <param>
 773       <key>_coordinate</key>
 774       <value>(1116, 344)</value>
 775     </param>
 776     <param>
 777       <key>_rotation</key>
 778       <value>270</value>
 779     </param>
 780     <param>
 781       <key>id</key>
 782       <value>blocks_sub_xx_0</value>
 783     </param>
 784     <param>
 785       <key>type</key>
 786       <value>float</value>
 787     </param>
 788     <param>
 789       <key>maxoutbuf</key>
 790       <value>0</value>
 791     </param>
 792     <param>
 793       <key>minoutbuf</key>
 794       <value>0</value>
 795     </param>
 796     <param>
 797       <key>num_inputs</key>
 798       <value>2</value>
 799     </param>
 800     <param>
 801       <key>vlen</key>
 802       <value>1</value>
 803     </param>
 804   </block>
 805   <block>
 806     <key>digital_diff_decoder_bb</key>
 807     <param>
 808       <key>alias</key>
 809       <value></value>
 810     </param>
 811     <param>
 812       <key>comment</key>
 813       <value></value>
 814     </param>
 815     <param>
 816       <key>affinity</key>
 817       <value></value>
 818     </param>
 819     <param>
 820       <key>_enabled</key>
 821       <value>1</value>
 822     </param>
 823     <param>
 824       <key>_coordinate</key>
 825       <value>(384, 868)</value>
 826     </param>
 827     <param>
 828       <key>_rotation</key>
 829       <value>180</value>
 830     </param>
 831     <param>
 832       <key>id</key>
 833       <value>digital_diff_decoder_bb_0</value>
 834     </param>
 835     <param>
 836       <key>maxoutbuf</key>
 837       <value>0</value>
 838     </param>
 839     <param>
 840       <key>minoutbuf</key>
 841       <value>0</value>
 842     </param>
 843     <param>
 844       <key>modulus</key>
 845       <value>2</value>
 846     </param>
 847   </block>
 848   <block>
 849     <key>digital_psk_demod</key>
 850     <param>
 851       <key>alias</key>
 852       <value></value>
 853     </param>
 854     <param>
 855       <key>comment</key>
 856       <value></value>
 857     </param>
 858     <param>
 859       <key>affinity</key>
 860       <value></value>
 861     </param>
 862     <param>
 863       <key>differential</key>
 864       <value>False</value>
 865     </param>
 866     <param>
 867       <key>_enabled</key>
 868       <value>1</value>
 869     </param>
 870     <param>
 871       <key>excess_bw</key>
 872       <value>0.35</value>
 873     </param>
 874     <param>
 875       <key>freq_bw</key>
 876       <value>6.28/100.0</value>
 877     </param>
 878     <param>
 879       <key>_coordinate</key>
 880       <value>(432, 616)</value>
 881     </param>
 882     <param>
 883       <key>_rotation</key>
 884       <value>0</value>
 885     </param>
 886     <param>
 887       <key>mod_code</key>
 888       <value>"gray"</value>
 889     </param>
 890     <param>
 891       <key>id</key>
 892       <value>digital_psk_demod_0</value>
 893     </param>
 894     <param>
 895       <key>log</key>
 896       <value>False</value>
 897     </param>
 898     <param>
 899       <key>maxoutbuf</key>
 900       <value>0</value>
 901     </param>
 902     <param>
 903       <key>minoutbuf</key>
 904       <value>0</value>
 905     </param>
 906     <param>
 907       <key>constellation_points</key>
 908       <value>2</value>
 909     </param>
 910     <param>
 911       <key>phase_bw</key>
 912       <value>6.28/100.0</value>
 913     </param>
 914     <param>
 915       <key>samples_per_symbol</key>
 916       <value>4</value>
 917     </param>
 918     <param>
 919       <key>timing_bw</key>
 920       <value>6.28/100.0</value>
 921     </param>
 922     <param>
 923       <key>verbose</key>
 924       <value>False</value>
 925     </param>
 926   </block>
 927   <block>
 928     <key>fir_filter_xxx</key>
 929     <param>
 930       <key>alias</key>
 931       <value></value>
 932     </param>
 933     <param>
 934       <key>comment</key>
 935       <value></value>
 936     </param>
 937     <param>
 938       <key>affinity</key>
 939       <value></value>
 940     </param>
 941     <param>
 942       <key>decim</key>
 943       <value>5</value>
 944     </param>
 945     <param>
 946       <key>_enabled</key>
 947       <value>1</value>
 948     </param>
 949     <param>
 950       <key>_coordinate</key>
 951       <value>(928, 160)</value>
 952     </param>
 953     <param>
 954       <key>_rotation</key>
 955       <value>180</value>
 956     </param>
 957     <param>
 958       <key>id</key>
 959       <value>fir_filter_xxx_1</value>
 960     </param>
 961     <param>
 962       <key>maxoutbuf</key>
 963       <value>0</value>
 964     </param>
 965     <param>
 966       <key>minoutbuf</key>
 967       <value>0</value>
 968     </param>
 969     <param>
 970       <key>samp_delay</key>
 971       <value>0</value>
 972     </param>
 973     <param>
 974       <key>taps</key>
 975       <value>firdes.low_pass(1.0,240000,13e3,3e3,firdes.WIN_HAMMING)</value>
 976     </param>
 977     <param>
 978       <key>type</key>
 979       <value>fff</value>
 980     </param>
 981   </block>
 982   <block>
 983     <key>freq_xlating_fir_filter_xxx</key>
 984     <param>
 985       <key>alias</key>
 986       <value></value>
 987     </param>
 988     <param>
 989       <key>center_freq</key>
 990       <value>freq_offset</value>
 991     </param>
 992     <param>
 993       <key>comment</key>
 994       <value></value>
 995     </param>
 996     <param>
 997       <key>affinity</key>
 998       <value></value>
 999     </param>
1000     <param>
1001       <key>decim</key>
1002       <value>1</value>
1003     </param>
1004     <param>
1005       <key>_enabled</key>
1006       <value>True</value>
1007     </param>
1008     <param>
1009       <key>_coordinate</key>
1010       <value>(56, 328)</value>
1011     </param>
1012     <param>
1013       <key>_rotation</key>
1014       <value>0</value>
1015     </param>
1016     <param>
1017       <key>id</key>
1018       <value>freq_xlating_fir_filter_xxx_0</value>
1019     </param>
1020     <param>
1021       <key>maxoutbuf</key>
1022       <value>0</value>
1023     </param>
1024     <param>
1025       <key>minoutbuf</key>
1026       <value>0</value>
1027     </param>
1028     <param>
1029       <key>samp_rate</key>
1030       <value>samp_rate</value>
1031     </param>
1032     <param>
1033       <key>taps</key>
1034       <value>firdes.low_pass(1, samp_rate, 80000, 20000)</value>
1035     </param>
1036     <param>
1037       <key>type</key>
1038       <value>ccc</value>
1039     </param>
1040   </block>
1041   <block>
1042     <key>freq_xlating_fir_filter_xxx</key>
1043     <param>
1044       <key>alias</key>
1045       <value></value>
1046     </param>
1047     <param>
1048       <key>center_freq</key>
1049       <value>57e3</value>
1050     </param>
1051     <param>
1052       <key>comment</key>
1053       <value></value>
1054     </param>
1055     <param>
1056       <key>affinity</key>
1057       <value></value>
1058     </param>
1059     <param>
1060       <key>decim</key>
1061       <value>1</value>
1062     </param>
1063     <param>
1064       <key>_enabled</key>
1065       <value>1</value>
1066     </param>
1067     <param>
1068       <key>_coordinate</key>
1069       <value>(456, 472)</value>
1070     </param>
1071     <param>
1072       <key>_rotation</key>
1073       <value>180</value>
1074     </param>
1075     <param>
1076       <key>id</key>
1077       <value>freq_xlating_fir_filter_xxx_1_0</value>
1078     </param>
1079     <param>
1080       <key>maxoutbuf</key>
1081       <value>0</value>
1082     </param>
1083     <param>
1084       <key>minoutbuf</key>
1085       <value>0</value>
1086     </param>
1087     <param>
1088       <key>samp_rate</key>
1089       <value>250000</value>
1090     </param>
1091     <param>
1092       <key>taps</key>
1093       <value>firdes.low_pass(2500.0,250000,2.6e3,2e3,firdes.WIN_HAMMING)</value>
1094     </param>
1095     <param>
1096       <key>type</key>
1097       <value>fcc</value>
1098     </param>
1099   </block>
1100   <block>
1101     <key>freq_xlating_fir_filter_xxx</key>
1102     <param>
1103       <key>alias</key>
1104       <value></value>
1105     </param>
1106     <param>
1107       <key>center_freq</key>
1108       <value>38000</value>
1109     </param>
1110     <param>
1111       <key>comment</key>
1112       <value></value>
1113     </param>
1114     <param>
1115       <key>affinity</key>
1116       <value></value>
1117     </param>
1118     <param>
1119       <key>decim</key>
1120       <value>5</value>
1121     </param>
1122     <param>
1123       <key>_enabled</key>
1124       <value>1</value>
1125     </param>
1126     <param>
1127       <key>_coordinate</key>
1128       <value>(1256, 32)</value>
1129     </param>
1130     <param>
1131       <key>_rotation</key>
1132       <value>0</value>
1133     </param>
1134     <param>
1135       <key>id</key>
1136       <value>freq_xlating_fir_filter_xxx_2</value>
1137     </param>
1138     <param>
1139       <key>maxoutbuf</key>
1140       <value>0</value>
1141     </param>
1142     <param>
1143       <key>minoutbuf</key>
1144       <value>0</value>
1145     </param>
1146     <param>
1147       <key>samp_rate</key>
1148       <value>240000</value>
1149     </param>
1150     <param>
1151       <key>taps</key>
1152       <value>firdes.low_pass(1.0,240000,13e3,3e3,firdes.WIN_HAMMING)</value>
1153     </param>
1154     <param>
1155       <key>type</key>
1156       <value>fcf</value>
1157     </param>
1158   </block>
1159   <block>
1160     <key>gr_rds_decoder</key>
1161     <param>
1162       <key>alias</key>
1163       <value></value>
1164     </param>
1165     <param>
1166       <key>comment</key>
1167       <value></value>
1168     </param>
1169     <param>
1170       <key>affinity</key>
1171       <value></value>
1172     </param>
1173     <param>
1174       <key>debug</key>
1175       <value>False</value>
1176     </param>
1177     <param>
1178       <key>_enabled</key>
1179       <value>1</value>
1180     </param>
1181     <param>
1182       <key>_coordinate</key>
1183       <value>(88, 856)</value>
1184     </param>
1185     <param>
1186       <key>_rotation</key>
1187       <value>180</value>
1188     </param>
1189     <param>
1190       <key>id</key>
1191       <value>gr_rds_decoder_0</value>
1192     </param>
1193     <param>
1194       <key>log</key>
1195       <value>False</value>
1196     </param>
1197     <param>
1198       <key>maxoutbuf</key>
1199       <value>0</value>
1200     </param>
1201     <param>
1202       <key>minoutbuf</key>
1203       <value>0</value>
1204     </param>
1205   </block>
1206   <block>
1207     <key>gr_rds_panel</key>
1208     <param>
1209       <key>alias</key>
1210       <value></value>
1211     </param>
1212     <param>
1213       <key>comment</key>
1214       <value></value>
1215     </param>
1216     <param>
1217       <key>affinity</key>
1218       <value></value>
1219     </param>
1220     <param>
1221       <key>_enabled</key>
1222       <value>1</value>
1223     </param>
1224     <param>
1225       <key>freq</key>
1226       <value>88300000</value>
1227     </param>
1228     <param>
1229       <key>_coordinate</key>
1230       <value>(368, 996)</value>
1231     </param>
1232     <param>
1233       <key>_rotation</key>
1234       <value>0</value>
1235     </param>
1236     <param>
1237       <key>grid_pos</key>
1238       <value></value>
1239     </param>
1240     <param>
1241       <key>id</key>
1242       <value>gr_rds_panel_0</value>
1243     </param>
1244     <param>
1245       <key>notebook</key>
1246       <value></value>
1247     </param>
1248   </block>
1249   <block>
1250     <key>gr_rds_parser</key>
1251     <param>
1252       <key>alias</key>
1253       <value></value>
1254     </param>
1255     <param>
1256       <key>comment</key>
1257       <value></value>
1258     </param>
1259     <param>
1260       <key>affinity</key>
1261       <value></value>
1262     </param>
1263     <param>
1264       <key>debug</key>
1265       <value>False</value>
1266     </param>
1267     <param>
1268       <key>_enabled</key>
1269       <value>1</value>
1270     </param>
1271     <param>
1272       <key>_coordinate</key>
1273       <value>(72, 964)</value>
1274     </param>
1275     <param>
1276       <key>_rotation</key>
1277       <value>0</value>
1278     </param>
1279     <param>
1280       <key>id</key>
1281       <value>gr_rds_parser_0</value>
1282     </param>
1283     <param>
1284       <key>log</key>
1285       <value>True</value>
1286     </param>
1287     <param>
1288       <key>maxoutbuf</key>
1289       <value>0</value>
1290     </param>
1291     <param>
1292       <key>minoutbuf</key>
1293       <value>0</value>
1294     </param>
1295     <param>
1296       <key>pty_locale</key>
1297       <value>0</value>
1298     </param>
1299     <param>
1300       <key>reset</key>
1301       <value>0</value>
1302     </param>
1303   </block>
1304   <block>
1305     <key>import</key>
1306     <param>
1307       <key>alias</key>
1308       <value></value>
1309     </param>
1310     <param>
1311       <key>comment</key>
1312       <value></value>
1313     </param>
1314     <param>
1315       <key>_enabled</key>
1316       <value>True</value>
1317     </param>
1318     <param>
1319       <key>_coordinate</key>
1320       <value>(584, 20)</value>
1321     </param>
1322     <param>
1323       <key>_rotation</key>
1324       <value>0</value>
1325     </param>
1326     <param>
1327       <key>id</key>
1328       <value>import_0</value>
1329     </param>
1330     <param>
1331       <key>import</key>
1332       <value>import math</value>
1333     </param>
1334   </block>
1335   <block>
1336     <key>pfb_arb_resampler_xxx</key>
1337     <param>
1338       <key>alias</key>
1339       <value></value>
1340     </param>
1341     <param>
1342       <key>comment</key>
1343       <value></value>
1344     </param>
1345     <param>
1346       <key>affinity</key>
1347       <value></value>
1348     </param>
1349     <param>
1350       <key>_enabled</key>
1351       <value>1</value>
1352     </param>
1353     <param>
1354       <key>_coordinate</key>
1355       <value>(72, 472)</value>
1356     </param>
1357     <param>
1358       <key>_rotation</key>
1359       <value>180</value>
1360     </param>
1361     <param>
1362       <key>id</key>
1363       <value>pfb_arb_resampler_xxx_0</value>
1364     </param>
1365     <param>
1366       <key>maxoutbuf</key>
1367       <value>0</value>
1368     </param>
1369     <param>
1370       <key>minoutbuf</key>
1371       <value>0</value>
1372     </param>
1373     <param>
1374       <key>nfilts</key>
1375       <value>32</value>
1376     </param>
1377     <param>
1378       <key>rrate</key>
1379       <value>19000/250e3</value>
1380     </param>
1381     <param>
1382       <key>samp_delay</key>
1383       <value>0</value>
1384     </param>
1385     <param>
1386       <key>atten</key>
1387       <value>100</value>
1388     </param>
1389     <param>
1390       <key>taps</key>
1391       <value></value>
1392     </param>
1393     <param>
1394       <key>type</key>
1395       <value>ccf</value>
1396     </param>
1397   </block>
1398   <block>
1399     <key>pfb_arb_resampler_xxx</key>
1400     <param>
1401       <key>alias</key>
1402       <value></value>
1403     </param>
1404     <param>
1405       <key>comment</key>
1406       <value></value>
1407     </param>
1408     <param>
1409       <key>affinity</key>
1410       <value></value>
1411     </param>
1412     <param>
1413       <key>_enabled</key>
1414       <value>1</value>
1415     </param>
1416     <param>
1417       <key>_coordinate</key>
1418       <value>(872, 16)</value>
1419     </param>
1420     <param>
1421       <key>_rotation</key>
1422       <value>0</value>
1423     </param>
1424     <param>
1425       <key>id</key>
1426       <value>pfb_arb_resampler_xxx_1</value>
1427     </param>
1428     <param>
1429       <key>maxoutbuf</key>
1430       <value>0</value>
1431     </param>
1432     <param>
1433       <key>minoutbuf</key>
1434       <value>0</value>
1435     </param>
1436     <param>
1437       <key>nfilts</key>
1438       <value>32</value>
1439     </param>
1440     <param>
1441       <key>rrate</key>
1442       <value>240000.0/250000</value>
1443     </param>
1444     <param>
1445       <key>samp_delay</key>
1446       <value>0</value>
1447     </param>
1448     <param>
1449       <key>atten</key>
1450       <value>100</value>
1451     </param>
1452     <param>
1453       <key>taps</key>
1454       <value></value>
1455     </param>
1456     <param>
1457       <key>type</key>
1458       <value>fff</value>
1459     </param>
1460   </block>
1461   <block>
1462     <key>root_raised_cosine_filter</key>
1463     <param>
1464       <key>alpha</key>
1465       <value>.35</value>
1466     </param>
1467     <param>
1468       <key>alias</key>
1469       <value></value>
1470     </param>
1471     <param>
1472       <key>comment</key>
1473       <value></value>
1474     </param>
1475     <param>
1476       <key>affinity</key>
1477       <value></value>
1478     </param>
1479     <param>
1480       <key>decim</key>
1481       <value>2</value>
1482     </param>
1483     <param>
1484       <key>_enabled</key>
1485       <value>1</value>
1486     </param>
1487     <param>
1488       <key>type</key>
1489       <value>fir_filter_ccf</value>
1490     </param>
1491     <param>
1492       <key>_coordinate</key>
1493       <value>(64, 640)</value>
1494     </param>
1495     <param>
1496       <key>_rotation</key>
1497       <value>0</value>
1498     </param>
1499     <param>
1500       <key>gain</key>
1501       <value>1</value>
1502     </param>
1503     <param>
1504       <key>id</key>
1505       <value>root_raised_cosine_filter_0</value>
1506     </param>
1507     <param>
1508       <key>interp</key>
1509       <value>1</value>
1510     </param>
1511     <param>
1512       <key>maxoutbuf</key>
1513       <value>0</value>
1514     </param>
1515     <param>
1516       <key>minoutbuf</key>
1517       <value>0</value>
1518     </param>
1519     <param>
1520       <key>ntaps</key>
1521       <value>100</value>
1522     </param>
1523     <param>
1524       <key>samp_rate</key>
1525       <value>19000</value>
1526     </param>
1527     <param>
1528       <key>sym_rate</key>
1529       <value>2375</value>
1530     </param>
1531   </block>
1532   <connection>
1533     <source_block_id>analog_fm_deemph_0_0</source_block_id>
1534     <sink_block_id>blocks_multiply_const_vxx_0_0</sink_block_id>
1535     <source_key>0</source_key>
1536     <sink_key>0</sink_key>
1537   </connection>
1538   <connection>
1539     <source_block_id>analog_fm_deemph_0_0_0</source_block_id>
1540     <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
1541     <source_key>0</source_key>
1542     <sink_key>0</sink_key>
1543   </connection>
1544   <connection>
1545     <source_block_id>analog_sig_source_x_0</source_block_id>
1546     <sink_block_id>blocks_multiply_xx_0</sink_block_id>
1547     <source_key>0</source_key>
1548     <sink_key>0</sink_key>
1549   </connection>
1550   <connection>
1551     <source_block_id>analog_wfm_rcv_0</source_block_id>
1552     <sink_block_id>freq_xlating_fir_filter_xxx_1_0</sink_block_id>
1553     <source_key>0</source_key>
1554     <sink_key>0</sink_key>
1555   </connection>
1556   <connection>
1557     <source_block_id>analog_wfm_rcv_0</source_block_id>
1558     <sink_block_id>pfb_arb_resampler_xxx_1</sink_block_id>
1559     <source_key>0</source_key>
1560     <sink_key>0</sink_key>
1561   </connection>
1562   <connection>
1563     <source_block_id>blocks_add_xx_0</source_block_id>
1564     <sink_block_id>analog_fm_deemph_0_0_0</sink_block_id>
1565     <source_key>0</source_key>
1566     <sink_key>0</sink_key>
1567   </connection>
1568   <connection>
1569     <source_block_id>blocks_complex_to_real_0</source_block_id>
1570     <sink_block_id>blocks_add_xx_0</sink_block_id>
1571     <source_key>0</source_key>
1572     <sink_key>1</sink_key>
1573   </connection>
1574   <connection>
1575     <source_block_id>blocks_complex_to_real_0</source_block_id>
1576     <sink_block_id>blocks_sub_xx_0</sink_block_id>
1577     <source_key>0</source_key>
1578     <sink_key>1</sink_key>
1579   </connection>
1580   <connection>
1581     <source_block_id>blocks_file_source_0</source_block_id>
1582     <sink_block_id>blocks_multiply_xx_0</sink_block_id>
1583     <source_key>0</source_key>
1584     <sink_key>1</sink_key>
1585   </connection>
1586   <connection>
1587     <source_block_id>blocks_keep_one_in_n_0</source_block_id>
1588     <sink_block_id>digital_diff_decoder_bb_0</sink_block_id>
1589     <source_key>0</source_key>
1590     <sink_key>0</sink_key>
1591   </connection>
1592   <connection>
1593     <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
1594     <sink_block_id>audio_sink_0</sink_block_id>
1595     <source_key>0</source_key>
1596     <sink_key>0</sink_key>
1597   </connection>
1598   <connection>
1599     <source_block_id>blocks_multiply_const_vxx_0_0</source_block_id>
1600     <sink_block_id>audio_sink_0</sink_block_id>
1601     <source_key>0</source_key>
1602     <sink_key>1</sink_key>
1603   </connection>
1604   <connection>
1605     <source_block_id>blocks_multiply_xx_0</source_block_id>
1606     <sink_block_id>freq_xlating_fir_filter_xxx_0</sink_block_id>
1607     <source_key>0</source_key>
1608     <sink_key>0</sink_key>
1609   </connection>
1610   <connection>
1611     <source_block_id>blocks_sub_xx_0</source_block_id>
1612     <sink_block_id>analog_fm_deemph_0_0</sink_block_id>
1613     <source_key>0</source_key>
1614     <sink_key>0</sink_key>
1615   </connection>
1616   <connection>
1617     <source_block_id>digital_diff_decoder_bb_0</source_block_id>
1618     <sink_block_id>gr_rds_decoder_0</sink_block_id>
1619     <source_key>0</source_key>
1620     <sink_key>0</sink_key>
1621   </connection>
1622   <connection>
1623     <source_block_id>digital_psk_demod_0</source_block_id>
1624     <sink_block_id>blocks_keep_one_in_n_0</sink_block_id>
1625     <source_key>0</source_key>
1626     <sink_key>0</sink_key>
1627   </connection>
1628   <connection>
1629     <source_block_id>fir_filter_xxx_1</source_block_id>
1630     <sink_block_id>blocks_add_xx_0</sink_block_id>
1631     <source_key>0</source_key>
1632     <sink_key>0</sink_key>
1633   </connection>
1634   <connection>
1635     <source_block_id>fir_filter_xxx_1</source_block_id>
1636     <sink_block_id>blocks_sub_xx_0</sink_block_id>
1637     <source_key>0</source_key>
1638     <sink_key>0</sink_key>
1639   </connection>
1640   <connection>
1641     <source_block_id>freq_xlating_fir_filter_xxx_0</source_block_id>
1642     <sink_block_id>analog_wfm_rcv_0</sink_block_id>
1643     <source_key>0</source_key>
1644     <sink_key>0</sink_key>
1645   </connection>
1646   <connection>
1647     <source_block_id>freq_xlating_fir_filter_xxx_1_0</source_block_id>
1648     <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
1649     <source_key>0</source_key>
1650     <sink_key>0</sink_key>
1651   </connection>
1652   <connection>
1653     <source_block_id>freq_xlating_fir_filter_xxx_2</source_block_id>
1654     <sink_block_id>blocks_complex_to_real_0</sink_block_id>
1655     <source_key>0</source_key>
1656     <sink_key>0</sink_key>
1657   </connection>
1658   <connection>
1659     <source_block_id>gr_rds_decoder_0</source_block_id>
1660     <sink_block_id>gr_rds_parser_0</sink_block_id>
1661     <source_key>out</source_key>
1662     <sink_key>in</sink_key>
1663   </connection>
1664   <connection>
1665     <source_block_id>gr_rds_parser_0</source_block_id>
1666     <sink_block_id>gr_rds_panel_0</sink_block_id>
1667     <source_key>out</source_key>
1668     <sink_key>in</sink_key>
1669   </connection>
1670   <connection>
1671     <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
1672     <sink_block_id>root_raised_cosine_filter_0</sink_block_id>
1673     <source_key>0</source_key>
1674     <sink_key>0</sink_key>
1675   </connection>
1676   <connection>
1677     <source_block_id>pfb_arb_resampler_xxx_1</source_block_id>
1678     <sink_block_id>fir_filter_xxx_1</sink_block_id>
1679     <source_key>0</source_key>
1680     <sink_key>0</sink_key>
1681   </connection>
1682   <connection>
1683     <source_block_id>pfb_arb_resampler_xxx_1</source_block_id>
1684     <sink_block_id>freq_xlating_fir_filter_xxx_2</sink_block_id>
1685     <source_key>0</source_key>
1686     <sink_key>0</sink_key>
1687   </connection>
1688   <connection>
1689     <source_block_id>root_raised_cosine_filter_0</source_block_id>
1690     <sink_block_id>digital_psk_demod_0</sink_block_id>
1691     <source_key>0</source_key>
1692     <sink_key>0</sink_key>
1693   </connection>
1694 </flow_graph>