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   1 <?xml version='1.0' encoding='ASCII'?>
   2 <flow_graph>
   3   <timestamp>Wed Sep 23 11:32:00 2009</timestamp>
   4   <block>
   5     <key>options</key>
   6     <param>
   7       <key>id</key>
   8       <value>usrp_rx_hrpt</value>
   9     </param>
  10     <param>
  11       <key>_enabled</key>
  12       <value>True</value>
  13     </param>
  14     <param>
  15       <key>title</key>
  16       <value>USRP HRPT Receiver</value>
  17     </param>
  18     <param>
  19       <key>author</key>
  20       <value></value>
  21     </param>
  22     <param>
  23       <key>description</key>
  24       <value></value>
  25     </param>
  26     <param>
  27       <key>window_size</key>
  28       <value>4096,4096</value>
  29     </param>
  30     <param>
  31       <key>generate_options</key>
  32       <value>wx_gui</value>
  33     </param>
  34     <param>
  35       <key>category</key>
  36       <value>Custom</value>
  37     </param>
  38     <param>
  39       <key>run</key>
  40       <value>True</value>
  41     </param>
  42     <param>
  43       <key>realtime_scheduling</key>
  44       <value></value>
  45     </param>
  46     <param>
  47       <key>_coordinate</key>
  48       <value>(10, 10)</value>
  49     </param>
  50     <param>
  51       <key>_rotation</key>
  52       <value>0</value>
  53     </param>
  54   </block>
  55   <block>
  56     <key>variable</key>
  57     <param>
  58       <key>id</key>
  59       <value>max_carrier_offset</value>
  60     </param>
  61     <param>
  62       <key>_enabled</key>
  63       <value>True</value>
  64     </param>
  65     <param>
  66       <key>value</key>
  67       <value>2*math.pi*100e3/sample_rate</value>
  68     </param>
  69     <param>
  70       <key>_coordinate</key>
  71       <value>(575, 19)</value>
  72     </param>
  73     <param>
  74       <key>_rotation</key>
  75       <value>0</value>
  76     </param>
  77   </block>
  78   <block>
  79     <key>gr_moving_average_xx</key>
  80     <param>
  81       <key>id</key>
  82       <value>matched_filter</value>
  83     </param>
  84     <param>
  85       <key>_enabled</key>
  86       <value>True</value>
  87     </param>
  88     <param>
  89       <key>type</key>
  90       <value>complex</value>
  91     </param>
  92     <param>
  93       <key>length</key>
  94       <value>hs</value>
  95     </param>
  96     <param>
  97       <key>scale</key>
  98       <value>1.0/hs</value>
  99     </param>
 100     <param>
 101       <key>max_iter</key>
 102       <value>4000</value>
 103     </param>
 104     <param>
 105       <key>_coordinate</key>
 106       <value>(441, 723)</value>
 107     </param>
 108     <param>
 109       <key>_rotation</key>
 110       <value>0</value>
 111     </param>
 112   </block>
 113   <block>
 114     <key>import</key>
 115     <param>
 116       <key>id</key>
 117       <value>import_0</value>
 118     </param>
 119     <param>
 120       <key>_enabled</key>
 121       <value>True</value>
 122     </param>
 123     <param>
 124       <key>import</key>
 125       <value>import math</value>
 126     </param>
 127     <param>
 128       <key>_coordinate</key>
 129       <value>(11, 76)</value>
 130     </param>
 131     <param>
 132       <key>_rotation</key>
 133       <value>0</value>
 134     </param>
 135   </block>
 136   <block>
 137     <key>variable</key>
 138     <param>
 139       <key>id</key>
 140       <value>config_filename</value>
 141     </param>
 142     <param>
 143       <key>_enabled</key>
 144       <value>True</value>
 145     </param>
 146     <param>
 147       <key>value</key>
 148       <value>'usrp_rx_hrpt.cfg'</value>
 149     </param>
 150     <param>
 151       <key>_coordinate</key>
 152       <value>(12, 129)</value>
 153     </param>
 154     <param>
 155       <key>_rotation</key>
 156       <value>0</value>
 157     </param>
 158   </block>
 159   <block>
 160     <key>variable</key>
 161     <param>
 162       <key>id</key>
 163       <value>sym_rate</value>
 164     </param>
 165     <param>
 166       <key>_enabled</key>
 167       <value>True</value>
 168     </param>
 169     <param>
 170       <key>value</key>
 171       <value>600*1109</value>
 172     </param>
 173     <param>
 174       <key>_coordinate</key>
 175       <value>(301, 19)</value>
 176     </param>
 177     <param>
 178       <key>_rotation</key>
 179       <value>0</value>
 180     </param>
 181   </block>
 182   <block>
 183     <key>variable</key>
 184     <param>
 185       <key>id</key>
 186       <value>sps</value>
 187     </param>
 188     <param>
 189       <key>_enabled</key>
 190       <value>True</value>
 191     </param>
 192     <param>
 193       <key>value</key>
 194       <value>sample_rate/sym_rate</value>
 195     </param>
 196     <param>
 197       <key>_coordinate</key>
 198       <value>(397, 19)</value>
 199     </param>
 200     <param>
 201       <key>_rotation</key>
 202       <value>0</value>
 203     </param>
 204   </block>
 205   <block>
 206     <key>variable</key>
 207     <param>
 208       <key>id</key>
 209       <value>hs</value>
 210     </param>
 211     <param>
 212       <key>_enabled</key>
 213       <value>True</value>
 214     </param>
 215     <param>
 216       <key>value</key>
 217       <value>int(sps/2.0)</value>
 218     </param>
 219     <param>
 220       <key>_coordinate</key>
 221       <value>(499, 19)</value>
 222     </param>
 223     <param>
 224       <key>_rotation</key>
 225       <value>0</value>
 226     </param>
 227   </block>
 228   <block>
 229     <key>variable</key>
 230     <param>
 231       <key>id</key>
 232       <value>sample_rate</value>
 233     </param>
 234     <param>
 235       <key>_enabled</key>
 236       <value>True</value>
 237     </param>
 238     <param>
 239       <key>value</key>
 240       <value>64e6/decim</value>
 241     </param>
 242     <param>
 243       <key>_coordinate</key>
 244       <value>(198, 17)</value>
 245     </param>
 246     <param>
 247       <key>_rotation</key>
 248       <value>0</value>
 249     </param>
 250   </block>
 251   <block>
 252     <key>variable_slider</key>
 253     <param>
 254       <key>id</key>
 255       <value>gain</value>
 256     </param>
 257     <param>
 258       <key>_enabled</key>
 259       <value>True</value>
 260     </param>
 261     <param>
 262       <key>label</key>
 263       <value>RX Gain</value>
 264     </param>
 265     <param>
 266       <key>value</key>
 267       <value>saved_gain</value>
 268     </param>
 269     <param>
 270       <key>min</key>
 271       <value>0</value>
 272     </param>
 273     <param>
 274       <key>max</key>
 275       <value>100</value>
 276     </param>
 277     <param>
 278       <key>num_steps</key>
 279       <value>100</value>
 280     </param>
 281     <param>
 282       <key>style</key>
 283       <value>wx.SL_HORIZONTAL</value>
 284     </param>
 285     <param>
 286       <key>converver</key>
 287       <value>float_converter</value>
 288     </param>
 289     <param>
 290       <key>grid_pos</key>
 291       <value>0, 1, 1, 1</value>
 292     </param>
 293     <param>
 294       <key>notebook</key>
 295       <value></value>
 296     </param>
 297     <param>
 298       <key>_coordinate</key>
 299       <value>(340, 106)</value>
 300     </param>
 301     <param>
 302       <key>_rotation</key>
 303       <value>0</value>
 304     </param>
 305   </block>
 306   <block>
 307     <key>variable_text_box</key>
 308     <param>
 309       <key>id</key>
 310       <value>freq</value>
 311     </param>
 312     <param>
 313       <key>_enabled</key>
 314       <value>True</value>
 315     </param>
 316     <param>
 317       <key>label</key>
 318       <value>Frequency</value>
 319     </param>
 320     <param>
 321       <key>value</key>
 322       <value>saved_freq</value>
 323     </param>
 324     <param>
 325       <key>converver</key>
 326       <value>float_converter</value>
 327     </param>
 328     <param>
 329       <key>formatter</key>
 330       <value>None</value>
 331     </param>
 332     <param>
 333       <key>grid_pos</key>
 334       <value>0, 0, 1, 1</value>
 335     </param>
 336     <param>
 337       <key>notebook</key>
 338       <value></value>
 339     </param>
 340     <param>
 341       <key>_coordinate</key>
 342       <value>(199, 106)</value>
 343     </param>
 344     <param>
 345       <key>_rotation</key>
 346       <value>0</value>
 347     </param>
 348   </block>
 349   <block>
 350     <key>variable_slider</key>
 351     <param>
 352       <key>id</key>
 353       <value>pll_alpha</value>
 354     </param>
 355     <param>
 356       <key>_enabled</key>
 357       <value>True</value>
 358     </param>
 359     <param>
 360       <key>label</key>
 361       <value>PLL Alpha</value>
 362     </param>
 363     <param>
 364       <key>value</key>
 365       <value>saved_pll_alpha</value>
 366     </param>
 367     <param>
 368       <key>min</key>
 369       <value>0.0</value>
 370     </param>
 371     <param>
 372       <key>max</key>
 373       <value>0.5</value>
 374     </param>
 375     <param>
 376       <key>num_steps</key>
 377       <value>100</value>
 378     </param>
 379     <param>
 380       <key>style</key>
 381       <value>wx.SL_HORIZONTAL</value>
 382     </param>
 383     <param>
 384       <key>converver</key>
 385       <value>float_converter</value>
 386     </param>
 387     <param>
 388       <key>grid_pos</key>
 389       <value>0, 2, 1, 1</value>
 390     </param>
 391     <param>
 392       <key>notebook</key>
 393       <value></value>
 394     </param>
 395     <param>
 396       <key>_coordinate</key>
 397       <value>(479, 106)</value>
 398     </param>
 399     <param>
 400       <key>_rotation</key>
 401       <value>0</value>
 402     </param>
 403   </block>
 404   <block>
 405     <key>variable_slider</key>
 406     <param>
 407       <key>id</key>
 408       <value>sync_alpha</value>
 409     </param>
 410     <param>
 411       <key>_enabled</key>
 412       <value>True</value>
 413     </param>
 414     <param>
 415       <key>label</key>
 416       <value>SYNC Alpha</value>
 417     </param>
 418     <param>
 419       <key>value</key>
 420       <value>saved_sync_alpha</value>
 421     </param>
 422     <param>
 423       <key>min</key>
 424       <value>0.0</value>
 425     </param>
 426     <param>
 427       <key>max</key>
 428       <value>0.5</value>
 429     </param>
 430     <param>
 431       <key>num_steps</key>
 432       <value>100</value>
 433     </param>
 434     <param>
 435       <key>style</key>
 436       <value>wx.SL_HORIZONTAL</value>
 437     </param>
 438     <param>
 439       <key>converver</key>
 440       <value>float_converter</value>
 441     </param>
 442     <param>
 443       <key>grid_pos</key>
 444       <value>0, 3, 1, 1</value>
 445     </param>
 446     <param>
 447       <key>notebook</key>
 448       <value></value>
 449     </param>
 450     <param>
 451       <key>_coordinate</key>
 452       <value>(618, 106)</value>
 453     </param>
 454     <param>
 455       <key>_rotation</key>
 456       <value>0</value>
 457     </param>
 458   </block>
 459   <block>
 460     <key>variable_static_text</key>
 461     <param>
 462       <key>id</key>
 463       <value>side_text</value>
 464     </param>
 465     <param>
 466       <key>_enabled</key>
 467       <value>True</value>
 468     </param>
 469     <param>
 470       <key>label</key>
 471       <value>USRP Side</value>
 472     </param>
 473     <param>
 474       <key>value</key>
 475       <value>side</value>
 476     </param>
 477     <param>
 478       <key>converver</key>
 479       <value>str_converter</value>
 480     </param>
 481     <param>
 482       <key>formatter</key>
 483       <value>None</value>
 484     </param>
 485     <param>
 486       <key>grid_pos</key>
 487       <value>1, 0, 1, 1</value>
 488     </param>
 489     <param>
 490       <key>notebook</key>
 491       <value></value>
 492     </param>
 493     <param>
 494       <key>_coordinate</key>
 495       <value>(828, 20)</value>
 496     </param>
 497     <param>
 498       <key>_rotation</key>
 499       <value>0</value>
 500     </param>
 501   </block>
 502   <block>
 503     <key>variable_config</key>
 504     <param>
 505       <key>id</key>
 506       <value>side</value>
 507     </param>
 508     <param>
 509       <key>_enabled</key>
 510       <value>True</value>
 511     </param>
 512     <param>
 513       <key>value</key>
 514       <value>'A'</value>
 515     </param>
 516     <param>
 517       <key>type</key>
 518       <value>string</value>
 519     </param>
 520     <param>
 521       <key>config_file</key>
 522       <value>config_filename</value>
 523     </param>
 524     <param>
 525       <key>section</key>
 526       <value>'usrp'</value>
 527     </param>
 528     <param>
 529       <key>option</key>
 530       <value>'side'</value>
 531     </param>
 532     <param>
 533       <key>writeback</key>
 534       <value>side</value>
 535     </param>
 536     <param>
 537       <key>_coordinate</key>
 538       <value>(194, 253)</value>
 539     </param>
 540     <param>
 541       <key>_rotation</key>
 542       <value>0</value>
 543     </param>
 544   </block>
 545   <block>
 546     <key>variable_config</key>
 547     <param>
 548       <key>id</key>
 549       <value>decim</value>
 550     </param>
 551     <param>
 552       <key>_enabled</key>
 553       <value>True</value>
 554     </param>
 555     <param>
 556       <key>value</key>
 557       <value>16</value>
 558     </param>
 559     <param>
 560       <key>type</key>
 561       <value>real</value>
 562     </param>
 563     <param>
 564       <key>config_file</key>
 565       <value>config_filename</value>
 566     </param>
 567     <param>
 568       <key>section</key>
 569       <value>'usrp'</value>
 570     </param>
 571     <param>
 572       <key>option</key>
 573       <value>'decim'</value>
 574     </param>
 575     <param>
 576       <key>writeback</key>
 577       <value>decim</value>
 578     </param>
 579     <param>
 580       <key>_coordinate</key>
 581       <value>(351, 255)</value>
 582     </param>
 583     <param>
 584       <key>_rotation</key>
 585       <value>0</value>
 586     </param>
 587   </block>
 588   <block>
 589     <key>variable_config</key>
 590     <param>
 591       <key>id</key>
 592       <value>saved_freq</value>
 593     </param>
 594     <param>
 595       <key>_enabled</key>
 596       <value>True</value>
 597     </param>
 598     <param>
 599       <key>value</key>
 600       <value>1698e6</value>
 601     </param>
 602     <param>
 603       <key>type</key>
 604       <value>real</value>
 605     </param>
 606     <param>
 607       <key>config_file</key>
 608       <value>config_filename</value>
 609     </param>
 610     <param>
 611       <key>section</key>
 612       <value>'usrp'</value>
 613     </param>
 614     <param>
 615       <key>option</key>
 616       <value>'freq'</value>
 617     </param>
 618     <param>
 619       <key>writeback</key>
 620       <value>freq</value>
 621     </param>
 622     <param>
 623       <key>_coordinate</key>
 624       <value>(507, 258)</value>
 625     </param>
 626     <param>
 627       <key>_rotation</key>
 628       <value>0</value>
 629     </param>
 630   </block>
 631   <block>
 632     <key>variable_config</key>
 633     <param>
 634       <key>id</key>
 635       <value>saved_gain</value>
 636     </param>
 637     <param>
 638       <key>_enabled</key>
 639       <value>True</value>
 640     </param>
 641     <param>
 642       <key>value</key>
 643       <value>35</value>
 644     </param>
 645     <param>
 646       <key>type</key>
 647       <value>real</value>
 648     </param>
 649     <param>
 650       <key>config_file</key>
 651       <value>config_filename</value>
 652     </param>
 653     <param>
 654       <key>section</key>
 655       <value>'usrp'</value>
 656     </param>
 657     <param>
 658       <key>option</key>
 659       <value>'gain'</value>
 660     </param>
 661     <param>
 662       <key>writeback</key>
 663       <value>gain</value>
 664     </param>
 665     <param>
 666       <key>_coordinate</key>
 667       <value>(664, 259)</value>
 668     </param>
 669     <param>
 670       <key>_rotation</key>
 671       <value>0</value>
 672     </param>
 673   </block>
 674   <block>
 675     <key>variable_config</key>
 676     <param>
 677       <key>id</key>
 678       <value>saved_pll_alpha</value>
 679     </param>
 680     <param>
 681       <key>_enabled</key>
 682       <value>True</value>
 683     </param>
 684     <param>
 685       <key>value</key>
 686       <value>0.05</value>
 687     </param>
 688     <param>
 689       <key>type</key>
 690       <value>real</value>
 691     </param>
 692     <param>
 693       <key>config_file</key>
 694       <value>config_filename</value>
 695     </param>
 696     <param>
 697       <key>section</key>
 698       <value>'demod'</value>
 699     </param>
 700     <param>
 701       <key>option</key>
 702       <value>'pll_alpha'</value>
 703     </param>
 704     <param>
 705       <key>writeback</key>
 706       <value>pll_alpha</value>
 707     </param>
 708     <param>
 709       <key>_coordinate</key>
 710       <value>(823, 258)</value>
 711     </param>
 712     <param>
 713       <key>_rotation</key>
 714       <value>0</value>
 715     </param>
 716   </block>
 717   <block>
 718     <key>variable_config</key>
 719     <param>
 720       <key>id</key>
 721       <value>saved_sync_alpha</value>
 722     </param>
 723     <param>
 724       <key>_enabled</key>
 725       <value>True</value>
 726     </param>
 727     <param>
 728       <key>value</key>
 729       <value>0.05</value>
 730     </param>
 731     <param>
 732       <key>type</key>
 733       <value>real</value>
 734     </param>
 735     <param>
 736       <key>config_file</key>
 737       <value>config_filename</value>
 738     </param>
 739     <param>
 740       <key>section</key>
 741       <value>'demod'</value>
 742     </param>
 743     <param>
 744       <key>option</key>
 745       <value>'sync_alpha'</value>
 746     </param>
 747     <param>
 748       <key>writeback</key>
 749       <value>sync_alpha</value>
 750     </param>
 751     <param>
 752       <key>_coordinate</key>
 753       <value>(981, 258)</value>
 754     </param>
 755     <param>
 756       <key>_rotation</key>
 757       <value>0</value>
 758     </param>
 759   </block>
 760   <block>
 761     <key>variable_config</key>
 762     <param>
 763       <key>id</key>
 764       <value>output_filename</value>
 765     </param>
 766     <param>
 767       <key>_enabled</key>
 768       <value>True</value>
 769     </param>
 770     <param>
 771       <key>value</key>
 772       <value>'frames.dat'</value>
 773     </param>
 774     <param>
 775       <key>type</key>
 776       <value>string</value>
 777     </param>
 778     <param>
 779       <key>config_file</key>
 780       <value>config_filename</value>
 781     </param>
 782     <param>
 783       <key>section</key>
 784       <value>'output'</value>
 785     </param>
 786     <param>
 787       <key>option</key>
 788       <value>'filename'</value>
 789     </param>
 790     <param>
 791       <key>writeback</key>
 792       <value>output_filename</value>
 793     </param>
 794     <param>
 795       <key>_coordinate</key>
 796       <value>(1139, 259)</value>
 797     </param>
 798     <param>
 799       <key>_rotation</key>
 800       <value>0</value>
 801     </param>
 802   </block>
 803   <block>
 804     <key>variable_static_text</key>
 805     <param>
 806       <key>id</key>
 807       <value>decim_text</value>
 808     </param>
 809     <param>
 810       <key>_enabled</key>
 811       <value>True</value>
 812     </param>
 813     <param>
 814       <key>label</key>
 815       <value>Decimation</value>
 816     </param>
 817     <param>
 818       <key>value</key>
 819       <value>decim</value>
 820     </param>
 821     <param>
 822       <key>converver</key>
 823       <value>float_converter</value>
 824     </param>
 825     <param>
 826       <key>formatter</key>
 827       <value>None</value>
 828     </param>
 829     <param>
 830       <key>grid_pos</key>
 831       <value>1, 1, 1, 1</value>
 832     </param>
 833     <param>
 834       <key>notebook</key>
 835       <value></value>
 836     </param>
 837     <param>
 838       <key>_coordinate</key>
 839       <value>(973, 20)</value>
 840     </param>
 841     <param>
 842       <key>_rotation</key>
 843       <value>0</value>
 844     </param>
 845   </block>
 846   <block>
 847     <key>variable</key>
 848     <param>
 849       <key>id</key>
 850       <value>max_sync_offset</value>
 851     </param>
 852     <param>
 853       <key>_enabled</key>
 854       <value>True</value>
 855     </param>
 856     <param>
 857       <key>value</key>
 858       <value>0.01</value>
 859     </param>
 860     <param>
 861       <key>_coordinate</key>
 862       <value>(705, 19)</value>
 863     </param>
 864     <param>
 865       <key>_rotation</key>
 866       <value>0</value>
 867     </param>
 868   </block>
 869   <block>
 870     <key>usrp_simple_source_x</key>
 871     <param>
 872       <key>id</key>
 873       <value>usrp_source</value>
 874     </param>
 875     <param>
 876       <key>_enabled</key>
 877       <value>True</value>
 878     </param>
 879     <param>
 880       <key>type</key>
 881       <value>complex</value>
 882     </param>
 883     <param>
 884       <key>format</key>
 885       <value></value>
 886     </param>
 887     <param>
 888       <key>which</key>
 889       <value>0</value>
 890     </param>
 891     <param>
 892       <key>decimation</key>
 893       <value>decim</value>
 894     </param>
 895     <param>
 896       <key>frequency</key>
 897       <value>freq</value>
 898     </param>
 899     <param>
 900       <key>lo_offset</key>
 901       <value>float('inf')</value>
 902     </param>
 903     <param>
 904       <key>gain</key>
 905       <value>gain</value>
 906     </param>
 907     <param>
 908       <key>side</key>
 909       <value>side</value>
 910     </param>
 911     <param>
 912       <key>rx_ant</key>
 913       <value>RXA</value>
 914     </param>
 915     <param>
 916       <key>hb_filters</key>
 917       <value></value>
 918     </param>
 919     <param>
 920       <key>_coordinate</key>
 921       <value>(56, 699)</value>
 922     </param>
 923     <param>
 924       <key>_rotation</key>
 925       <value>0</value>
 926     </param>
 927   </block>
 928   <block>
 929     <key>gr_agc_xx</key>
 930     <param>
 931       <key>id</key>
 932       <value>agc</value>
 933     </param>
 934     <param>
 935       <key>_enabled</key>
 936       <value>True</value>
 937     </param>
 938     <param>
 939       <key>type</key>
 940       <value>complex</value>
 941     </param>
 942     <param>
 943       <key>rate</key>
 944       <value>1e-6</value>
 945     </param>
 946     <param>
 947       <key>reference</key>
 948       <value>1.0</value>
 949     </param>
 950     <param>
 951       <key>gain</key>
 952       <value>1.0</value>
 953     </param>
 954     <param>
 955       <key>max_gain</key>
 956       <value>1.0</value>
 957     </param>
 958     <param>
 959       <key>_coordinate</key>
 960       <value>(273, 715)</value>
 961     </param>
 962     <param>
 963       <key>_rotation</key>
 964       <value>0</value>
 965     </param>
 966   </block>
 967   <block>
 968     <key>wxgui_scopesink2</key>
 969     <param>
 970       <key>id</key>
 971       <value>rx_scope</value>
 972     </param>
 973     <param>
 974       <key>_enabled</key>
 975       <value>True</value>
 976     </param>
 977     <param>
 978       <key>type</key>
 979       <value>complex</value>
 980     </param>
 981     <param>
 982       <key>title</key>
 983       <value>RX Waveform</value>
 984     </param>
 985     <param>
 986       <key>samp_rate</key>
 987       <value>sample_rate</value>
 988     </param>
 989     <param>
 990       <key>v_scale</key>
 991       <value>0</value>
 992     </param>
 993     <param>
 994       <key>t_scale</key>
 995       <value>20.0/sample_rate</value>
 996     </param>
 997     <param>
 998       <key>ac_couple</key>
 999       <value>False</value>
1000     </param>
1001     <param>
1002       <key>xy_mode</key>
1003       <value>False</value>
1004     </param>
1005     <param>
1006       <key>num_inputs</key>
1007       <value>1</value>
1008     </param>
1009     <param>
1010       <key>grid_pos</key>
1011       <value>1, 0, 1, 1</value>
1012     </param>
1013     <param>
1014       <key>notebook</key>
1015       <value>displays, 0</value>
1016     </param>
1017     <param>
1018       <key>_coordinate</key>
1019       <value>(439, 829)</value>
1020     </param>
1021     <param>
1022       <key>_rotation</key>
1023       <value>0</value>
1024     </param>
1025   </block>
1026   <block>
1027     <key>wxgui_fftsink2</key>
1028     <param>
1029       <key>id</key>
1030       <value>rx_fft</value>
1031     </param>
1032     <param>
1033       <key>_enabled</key>
1034       <value>True</value>
1035     </param>
1036     <param>
1037       <key>type</key>
1038       <value>complex</value>
1039     </param>
1040     <param>
1041       <key>title</key>
1042       <value>RX Spectrum</value>
1043     </param>
1044     <param>
1045       <key>samp_rate</key>
1046       <value>sample_rate</value>
1047     </param>
1048     <param>
1049       <key>baseband_freq</key>
1050       <value>freq</value>
1051     </param>
1052     <param>
1053       <key>y_per_div</key>
1054       <value>5</value>
1055     </param>
1056     <param>
1057       <key>y_divs</key>
1058       <value>8</value>
1059     </param>
1060     <param>
1061       <key>ref_level</key>
1062       <value>-5</value>
1063     </param>
1064     <param>
1065       <key>ref_scale</key>
1066       <value>2.0</value>
1067     </param>
1068     <param>
1069       <key>fft_size</key>
1070       <value>1024</value>
1071     </param>
1072     <param>
1073       <key>fft_rate</key>
1074       <value>30</value>
1075     </param>
1076     <param>
1077       <key>peak_hold</key>
1078       <value>False</value>
1079     </param>
1080     <param>
1081       <key>average</key>
1082       <value>True</value>
1083     </param>
1084     <param>
1085       <key>avg_alpha</key>
1086       <value>0.1</value>
1087     </param>
1088     <param>
1089       <key>grid_pos</key>
1090       <value>0, 0, 1, 1</value>
1091     </param>
1092     <param>
1093       <key>notebook</key>
1094       <value>displays, 0</value>
1095     </param>
1096     <param>
1097       <key>_coordinate</key>
1098       <value>(439, 465)</value>
1099     </param>
1100     <param>
1101       <key>_rotation</key>
1102       <value>0</value>
1103     </param>
1104   </block>
1105   <block>
1106     <key>wxgui_scopesink2</key>
1107     <param>
1108       <key>id</key>
1109       <value>pll_scope</value>
1110     </param>
1111     <param>
1112       <key>_enabled</key>
1113       <value>True</value>
1114     </param>
1115     <param>
1116       <key>type</key>
1117       <value>float</value>
1118     </param>
1119     <param>
1120       <key>title</key>
1121       <value>Post-PLL</value>
1122     </param>
1123     <param>
1124       <key>samp_rate</key>
1125       <value>sample_rate</value>
1126     </param>
1127     <param>
1128       <key>v_scale</key>
1129       <value>0.5</value>
1130     </param>
1131     <param>
1132       <key>t_scale</key>
1133       <value>20.0/sample_rate</value>
1134     </param>
1135     <param>
1136       <key>ac_couple</key>
1137       <value>False</value>
1138     </param>
1139     <param>
1140       <key>xy_mode</key>
1141       <value>False</value>
1142     </param>
1143     <param>
1144       <key>num_inputs</key>
1145       <value>1</value>
1146     </param>
1147     <param>
1148       <key>grid_pos</key>
1149       <value>0, 0, 1, 1</value>
1150     </param>
1151     <param>
1152       <key>notebook</key>
1153       <value>displays, 1</value>
1154     </param>
1155     <param>
1156       <key>_coordinate</key>
1157       <value>(605, 552)</value>
1158     </param>
1159     <param>
1160       <key>_rotation</key>
1161       <value>180</value>
1162     </param>
1163   </block>
1164   <block>
1165     <key>notebook</key>
1166     <param>
1167       <key>id</key>
1168       <value>displays</value>
1169     </param>
1170     <param>
1171       <key>_enabled</key>
1172       <value>True</value>
1173     </param>
1174     <param>
1175       <key>style</key>
1176       <value>wx.NB_TOP</value>
1177     </param>
1178     <param>
1179       <key>labels</key>
1180       <value>['RX','Demod']</value>
1181     </param>
1182     <param>
1183       <key>grid_pos</key>
1184       <value>2, 0, 1, 4</value>
1185     </param>
1186     <param>
1187       <key>notebook</key>
1188       <value></value>
1189     </param>
1190     <param>
1191       <key>_coordinate</key>
1192       <value>(15, 237)</value>
1193     </param>
1194     <param>
1195       <key>_rotation</key>
1196       <value>0</value>
1197     </param>
1198   </block>
1199   <block>
1200     <key>noaa_hrpt_pll_cf</key>
1201     <param>
1202       <key>id</key>
1203       <value>pll</value>
1204     </param>
1205     <param>
1206       <key>_enabled</key>
1207       <value>True</value>
1208     </param>
1209     <param>
1210       <key>alpha</key>
1211       <value>pll_alpha</value>
1212     </param>
1213     <param>
1214       <key>beta</key>
1215       <value>pll_alpha**2/4.0</value>
1216     </param>
1217     <param>
1218       <key>max_offset</key>
1219       <value>max_carrier_offset</value>
1220     </param>
1221     <param>
1222       <key>_coordinate</key>
1223       <value>(632, 723)</value>
1224     </param>
1225     <param>
1226       <key>_rotation</key>
1227       <value>0</value>
1228     </param>
1229   </block>
1230   <block>
1231     <key>noaa_hrpt_sync_fb</key>
1232     <param>
1233       <key>id</key>
1234       <value>sync</value>
1235     </param>
1236     <param>
1237       <key>_enabled</key>
1238       <value>True</value>
1239     </param>
1240     <param>
1241       <key>alpha</key>
1242       <value>sync_alpha</value>
1243     </param>
1244     <param>
1245       <key>beta</key>
1246       <value>sync_alpha**2/4.0</value>
1247     </param>
1248     <param>
1249       <key>sps</key>
1250       <value>sps</value>
1251     </param>
1252     <param>
1253       <key>max_offset</key>
1254       <value>max_sync_offset</value>
1255     </param>
1256     <param>
1257       <key>_coordinate</key>
1258       <value>(840, 715)</value>
1259     </param>
1260     <param>
1261       <key>_rotation</key>
1262       <value>0</value>
1263     </param>
1264   </block>
1265   <block>
1266     <key>noaa_hrpt_deframer</key>
1267     <param>
1268       <key>id</key>
1269       <value>deframer</value>
1270     </param>
1271     <param>
1272       <key>_enabled</key>
1273       <value>True</value>
1274     </param>
1275     <param>
1276       <key>_coordinate</key>
1277       <value>(1071, 743)</value>
1278     </param>
1279     <param>
1280       <key>_rotation</key>
1281       <value>0</value>
1282     </param>
1283   </block>
1284   <block>
1285     <key>noaa_hrpt_decoder</key>
1286     <param>
1287       <key>id</key>
1288       <value>decoder</value>
1289     </param>
1290     <param>
1291       <key>_enabled</key>
1292       <value>True</value>
1293     </param>
1294     <param>
1295       <key>_coordinate</key>
1296       <value>(1274, 743)</value>
1297     </param>
1298     <param>
1299       <key>_rotation</key>
1300       <value>0</value>
1301     </param>
1302   </block>
1303   <block>
1304     <key>gr_file_sink</key>
1305     <param>
1306       <key>id</key>
1307       <value>frame_sink</value>
1308     </param>
1309     <param>
1310       <key>_enabled</key>
1311       <value>True</value>
1312     </param>
1313     <param>
1314       <key>file</key>
1315       <value>output_filename</value>
1316     </param>
1317     <param>
1318       <key>type</key>
1319       <value>short</value>
1320     </param>
1321     <param>
1322       <key>vlen</key>
1323       <value>1</value>
1324     </param>
1325     <param>
1326       <key>_coordinate</key>
1327       <value>(1273, 851)</value>
1328     </param>
1329     <param>
1330       <key>_rotation</key>
1331       <value>0</value>
1332     </param>
1333   </block>
1334   <connection>
1335     <source_block_id>deframer</source_block_id>
1336     <sink_block_id>frame_sink</sink_block_id>
1337     <source_key>0</source_key>
1338     <sink_key>0</sink_key>
1339   </connection>
1340   <connection>
1341     <source_block_id>sync</source_block_id>
1342     <sink_block_id>deframer</sink_block_id>
1343     <source_key>0</source_key>
1344     <sink_key>0</sink_key>
1345   </connection>
1346   <connection>
1347     <source_block_id>pll</source_block_id>
1348     <sink_block_id>sync</sink_block_id>
1349     <source_key>0</source_key>
1350     <sink_key>0</sink_key>
1351   </connection>
1352   <connection>
1353     <source_block_id>pll</source_block_id>
1354     <sink_block_id>pll_scope</sink_block_id>
1355     <source_key>0</source_key>
1356     <sink_key>0</sink_key>
1357   </connection>
1358   <connection>
1359     <source_block_id>agc</source_block_id>
1360     <sink_block_id>rx_scope</sink_block_id>
1361     <source_key>0</source_key>
1362     <sink_key>0</sink_key>
1363   </connection>
1364   <connection>
1365     <source_block_id>agc</source_block_id>
1366     <sink_block_id>rx_fft</sink_block_id>
1367     <source_key>0</source_key>
1368     <sink_key>0</sink_key>
1369   </connection>
1370   <connection>
1371     <source_block_id>agc</source_block_id>
1372     <sink_block_id>matched_filter</sink_block_id>
1373     <source_key>0</source_key>
1374     <sink_key>0</sink_key>
1375   </connection>
1376   <connection>
1377     <source_block_id>matched_filter</source_block_id>
1378     <sink_block_id>pll</sink_block_id>
1379     <source_key>0</source_key>
1380     <sink_key>0</sink_key>
1381   </connection>
1382   <connection>
1383     <source_block_id>deframer</source_block_id>
1384     <sink_block_id>decoder</sink_block_id>
1385     <source_key>0</source_key>
1386     <sink_key>0</sink_key>
1387   </connection>
1388   <connection>
1389     <source_block_id>usrp_source</source_block_id>
1390     <sink_block_id>agc</sink_block_id>
1391     <source_key>0</source_key>
1392     <sink_key>0</sink_key>
1393   </connection>
1394 </flow_graph>