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   1 <?xml version='1.0' encoding='ASCII'?>
   2 <flow_graph>
   3   <timestamp>Sat Aug 29 11:26:03 2009</timestamp>
   4   <block>
   5     <key>options</key>
   6     <param>
   7       <key>id</key>
   8       <value>usrp_rx_lrit</value>
   9     </param>
  10     <param>
  11       <key>_enabled</key>
  12       <value>True</value>
  13     </param>
  14     <param>
  15       <key>title</key>
  16       <value>USRP LRIT 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>4095, 4095</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>samp_rate</value>
  60     </param>
  61     <param>
  62       <key>_enabled</key>
  63       <value>True</value>
  64     </param>
  65     <param>
  66       <key>value</key>
  67       <value>64e6/decim</value>
  68     </param>
  69     <param>
  70       <key>_coordinate</key>
  71       <value>(10, 81)</value>
  72     </param>
  73     <param>
  74       <key>_rotation</key>
  75       <value>0</value>
  76     </param>
  77   </block>
  78   <block>
  79     <key>variable</key>
  80     <param>
  81       <key>id</key>
  82       <value>symbol_rate</value>
  83     </param>
  84     <param>
  85       <key>_enabled</key>
  86       <value>True</value>
  87     </param>
  88     <param>
  89       <key>value</key>
  90       <value>293e3</value>
  91     </param>
  92     <param>
  93       <key>_coordinate</key>
  94       <value>(11, 148)</value>
  95     </param>
  96     <param>
  97       <key>_rotation</key>
  98       <value>0</value>
  99     </param>
 100   </block>
 101   <block>
 102     <key>variable</key>
 103     <param>
 104       <key>id</key>
 105       <value>sps</value>
 106     </param>
 107     <param>
 108       <key>_enabled</key>
 109       <value>True</value>
 110     </param>
 111     <param>
 112       <key>value</key>
 113       <value>samp_rate/symbol_rate</value>
 114     </param>
 115     <param>
 116       <key>_coordinate</key>
 117       <value>(12, 214)</value>
 118     </param>
 119     <param>
 120       <key>_rotation</key>
 121       <value>0</value>
 122     </param>
 123   </block>
 124   <block>
 125     <key>variable_text_box</key>
 126     <param>
 127       <key>id</key>
 128       <value>decim</value>
 129     </param>
 130     <param>
 131       <key>_enabled</key>
 132       <value>True</value>
 133     </param>
 134     <param>
 135       <key>label</key>
 136       <value>Decim</value>
 137     </param>
 138     <param>
 139       <key>value</key>
 140       <value>saved_decim</value>
 141     </param>
 142     <param>
 143       <key>converver</key>
 144       <value>int_converter</value>
 145     </param>
 146     <param>
 147       <key>formatter</key>
 148       <value>None</value>
 149     </param>
 150     <param>
 151       <key>grid_pos</key>
 152       <value>0, 0, 1, 1</value>
 153     </param>
 154     <param>
 155       <key>notebook</key>
 156       <value></value>
 157     </param>
 158     <param>
 159       <key>_coordinate</key>
 160       <value>(243, 13)</value>
 161     </param>
 162     <param>
 163       <key>_rotation</key>
 164       <value>0</value>
 165     </param>
 166   </block>
 167   <block>
 168     <key>wxgui_scopesink2</key>
 169     <param>
 170       <key>id</key>
 171       <value>wxgui_scopesink2_0</value>
 172     </param>
 173     <param>
 174       <key>_enabled</key>
 175       <value>True</value>
 176     </param>
 177     <param>
 178       <key>type</key>
 179       <value>complex</value>
 180     </param>
 181     <param>
 182       <key>title</key>
 183       <value>Waveform</value>
 184     </param>
 185     <param>
 186       <key>samp_rate</key>
 187       <value>samp_rate</value>
 188     </param>
 189     <param>
 190       <key>v_scale</key>
 191       <value>0.5</value>
 192     </param>
 193     <param>
 194       <key>t_scale</key>
 195       <value>20.0/samp_rate</value>
 196     </param>
 197     <param>
 198       <key>ac_couple</key>
 199       <value>False</value>
 200     </param>
 201     <param>
 202       <key>xy_mode</key>
 203       <value>True</value>
 204     </param>
 205     <param>
 206       <key>num_inputs</key>
 207       <value>1</value>
 208     </param>
 209     <param>
 210       <key>grid_pos</key>
 211       <value>1, 0, 1, 1</value>
 212     </param>
 213     <param>
 214       <key>notebook</key>
 215       <value>displays, 0</value>
 216     </param>
 217     <param>
 218       <key>_coordinate</key>
 219       <value>(434, 551)</value>
 220     </param>
 221     <param>
 222       <key>_rotation</key>
 223       <value>0</value>
 224     </param>
 225   </block>
 226   <block>
 227     <key>gr_agc_xx</key>
 228     <param>
 229       <key>id</key>
 230       <value>gr_agc_xx_0</value>
 231     </param>
 232     <param>
 233       <key>_enabled</key>
 234       <value>True</value>
 235     </param>
 236     <param>
 237       <key>type</key>
 238       <value>complex</value>
 239     </param>
 240     <param>
 241       <key>rate</key>
 242       <value>1e-6</value>
 243     </param>
 244     <param>
 245       <key>reference</key>
 246       <value>1.0</value>
 247     </param>
 248     <param>
 249       <key>gain</key>
 250       <value>1.0/32767.0</value>
 251     </param>
 252     <param>
 253       <key>max_gain</key>
 254       <value>1.0</value>
 255     </param>
 256     <param>
 257       <key>_coordinate</key>
 258       <value>(261, 493)</value>
 259     </param>
 260     <param>
 261       <key>_rotation</key>
 262       <value>0</value>
 263     </param>
 264   </block>
 265   <block>
 266     <key>root_raised_cosine_filter</key>
 267     <param>
 268       <key>id</key>
 269       <value>root_raised_cosine_filter_0</value>
 270     </param>
 271     <param>
 272       <key>_enabled</key>
 273       <value>False</value>
 274     </param>
 275     <param>
 276       <key>type</key>
 277       <value>fir_filter_ccf</value>
 278     </param>
 279     <param>
 280       <key>decim</key>
 281       <value>1</value>
 282     </param>
 283     <param>
 284       <key>interp</key>
 285       <value>1</value>
 286     </param>
 287     <param>
 288       <key>gain</key>
 289       <value>1</value>
 290     </param>
 291     <param>
 292       <key>samp_rate</key>
 293       <value>samp_rate</value>
 294     </param>
 295     <param>
 296       <key>sym_rate</key>
 297       <value>symbol_rate</value>
 298     </param>
 299     <param>
 300       <key>alpha</key>
 301       <value>0.5</value>
 302     </param>
 303     <param>
 304       <key>ntaps</key>
 305       <value>50</value>
 306     </param>
 307     <param>
 308       <key>_coordinate</key>
 309       <value>(618, 373)</value>
 310     </param>
 311     <param>
 312       <key>_rotation</key>
 313       <value>0</value>
 314     </param>
 315   </block>
 316   <block>
 317     <key>usrp_simple_source_x</key>
 318     <param>
 319       <key>id</key>
 320       <value>usrp_simple_source_x_0</value>
 321     </param>
 322     <param>
 323       <key>_enabled</key>
 324       <value>False</value>
 325     </param>
 326     <param>
 327       <key>type</key>
 328       <value>complex</value>
 329     </param>
 330     <param>
 331       <key>format</key>
 332       <value></value>
 333     </param>
 334     <param>
 335       <key>which</key>
 336       <value>0</value>
 337     </param>
 338     <param>
 339       <key>decimation</key>
 340       <value>decim</value>
 341     </param>
 342     <param>
 343       <key>frequency</key>
 344       <value>freq</value>
 345     </param>
 346     <param>
 347       <key>lo_offset</key>
 348       <value>float('inf')</value>
 349     </param>
 350     <param>
 351       <key>gain</key>
 352       <value>gain</value>
 353     </param>
 354     <param>
 355       <key>side</key>
 356       <value>B</value>
 357     </param>
 358     <param>
 359       <key>rx_ant</key>
 360       <value>RXA</value>
 361     </param>
 362     <param>
 363       <key>hb_filters</key>
 364       <value></value>
 365     </param>
 366     <param>
 367       <key>_coordinate</key>
 368       <value>(11, 477)</value>
 369     </param>
 370     <param>
 371       <key>_rotation</key>
 372       <value>0</value>
 373     </param>
 374   </block>
 375   <block>
 376     <key>wxgui_fftsink2</key>
 377     <param>
 378       <key>id</key>
 379       <value>wxgui_fftsink2_0</value>
 380     </param>
 381     <param>
 382       <key>_enabled</key>
 383       <value>True</value>
 384     </param>
 385     <param>
 386       <key>type</key>
 387       <value>complex</value>
 388     </param>
 389     <param>
 390       <key>title</key>
 391       <value>Spectrum</value>
 392     </param>
 393     <param>
 394       <key>samp_rate</key>
 395       <value>samp_rate</value>
 396     </param>
 397     <param>
 398       <key>baseband_freq</key>
 399       <value>freq</value>
 400     </param>
 401     <param>
 402       <key>y_per_div</key>
 403       <value>10</value>
 404     </param>
 405     <param>
 406       <key>y_divs</key>
 407       <value>10</value>
 408     </param>
 409     <param>
 410       <key>ref_level</key>
 411       <value>50</value>
 412     </param>
 413     <param>
 414       <key>fft_size</key>
 415       <value>1024</value>
 416     </param>
 417     <param>
 418       <key>fft_rate</key>
 419       <value>30</value>
 420     </param>
 421     <param>
 422       <key>peak_hold</key>
 423       <value>False</value>
 424     </param>
 425     <param>
 426       <key>average</key>
 427       <value>False</value>
 428     </param>
 429     <param>
 430       <key>avg_alpha</key>
 431       <value>0</value>
 432     </param>
 433     <param>
 434       <key>grid_pos</key>
 435       <value>0, 0, 1, 1</value>
 436     </param>
 437     <param>
 438       <key>notebook</key>
 439       <value>displays, 0</value>
 440     </param>
 441     <param>
 442       <key>_coordinate</key>
 443       <value>(434, 337)</value>
 444     </param>
 445     <param>
 446       <key>_rotation</key>
 447       <value>0</value>
 448     </param>
 449   </block>
 450   <block>
 451     <key>gr_throttle</key>
 452     <param>
 453       <key>id</key>
 454       <value>gr_throttle_0</value>
 455     </param>
 456     <param>
 457       <key>_enabled</key>
 458       <value>True</value>
 459     </param>
 460     <param>
 461       <key>type</key>
 462       <value>complex</value>
 463     </param>
 464     <param>
 465       <key>samples_per_second</key>
 466       <value>samp_rate</value>
 467     </param>
 468     <param>
 469       <key>vlen</key>
 470       <value>1</value>
 471     </param>
 472     <param>
 473       <key>_coordinate</key>
 474       <value>(181, 663)</value>
 475     </param>
 476     <param>
 477       <key>_rotation</key>
 478       <value>0</value>
 479     </param>
 480   </block>
 481   <block>
 482     <key>wxgui_scopesink2</key>
 483     <param>
 484       <key>id</key>
 485       <value>wxgui_scopesink2_1</value>
 486     </param>
 487     <param>
 488       <key>_enabled</key>
 489       <value>True</value>
 490     </param>
 491     <param>
 492       <key>type</key>
 493       <value>complex</value>
 494     </param>
 495     <param>
 496       <key>title</key>
 497       <value>Scope Plot</value>
 498     </param>
 499     <param>
 500       <key>samp_rate</key>
 501       <value>samp_rate</value>
 502     </param>
 503     <param>
 504       <key>v_scale</key>
 505       <value>0.4</value>
 506     </param>
 507     <param>
 508       <key>t_scale</key>
 509       <value>20.0/samp_rate</value>
 510     </param>
 511     <param>
 512       <key>ac_couple</key>
 513       <value>False</value>
 514     </param>
 515     <param>
 516       <key>xy_mode</key>
 517       <value>True</value>
 518     </param>
 519     <param>
 520       <key>num_inputs</key>
 521       <value>1</value>
 522     </param>
 523     <param>
 524       <key>grid_pos</key>
 525       <value>0, 0, 1, 1</value>
 526     </param>
 527     <param>
 528       <key>notebook</key>
 529       <value>displays, 1</value>
 530     </param>
 531     <param>
 532       <key>_coordinate</key>
 533       <value>(1126, 251)</value>
 534     </param>
 535     <param>
 536       <key>_rotation</key>
 537       <value>0</value>
 538     </param>
 539   </block>
 540   <block>
 541     <key>gr_probe_mpsk_snr_c</key>
 542     <param>
 543       <key>id</key>
 544       <value>gr_probe_mpsk_snr_c_0</value>
 545     </param>
 546     <param>
 547       <key>_enabled</key>
 548       <value>True</value>
 549     </param>
 550     <param>
 551       <key>type</key>
 552       <value>snr</value>
 553     </param>
 554     <param>
 555       <key>alpha</key>
 556       <value>0.0001</value>
 557     </param>
 558     <param>
 559       <key>probe_rate</key>
 560       <value>10</value>
 561     </param>
 562     <param>
 563       <key>_coordinate</key>
 564       <value>(1126, 723)</value>
 565     </param>
 566     <param>
 567       <key>_rotation</key>
 568       <value>0</value>
 569     </param>
 570   </block>
 571   <block>
 572     <key>wxgui_numbersink2</key>
 573     <param>
 574       <key>id</key>
 575       <value>wxgui_numbersink2_0</value>
 576     </param>
 577     <param>
 578       <key>_enabled</key>
 579       <value>True</value>
 580     </param>
 581     <param>
 582       <key>type</key>
 583       <value>float</value>
 584     </param>
 585     <param>
 586       <key>title</key>
 587       <value>SNR</value>
 588     </param>
 589     <param>
 590       <key>units</key>
 591       <value>dB</value>
 592     </param>
 593     <param>
 594       <key>samp_rate</key>
 595       <value>10</value>
 596     </param>
 597     <param>
 598       <key>min_value</key>
 599       <value>0</value>
 600     </param>
 601     <param>
 602       <key>max_value</key>
 603       <value>30</value>
 604     </param>
 605     <param>
 606       <key>factor</key>
 607       <value>1.0</value>
 608     </param>
 609     <param>
 610       <key>decimal_places</key>
 611       <value>1</value>
 612     </param>
 613     <param>
 614       <key>ref_level</key>
 615       <value>0</value>
 616     </param>
 617     <param>
 618       <key>number_rate</key>
 619       <value>10</value>
 620     </param>
 621     <param>
 622       <key>peak_hold</key>
 623       <value>False</value>
 624     </param>
 625     <param>
 626       <key>average</key>
 627       <value>False</value>
 628     </param>
 629     <param>
 630       <key>avg_alpha</key>
 631       <value>0</value>
 632     </param>
 633     <param>
 634       <key>show_gauge</key>
 635       <value>True</value>
 636     </param>
 637     <param>
 638       <key>grid_pos</key>
 639       <value>2, 0, 1, 1</value>
 640     </param>
 641     <param>
 642       <key>notebook</key>
 643       <value>displays, 1</value>
 644     </param>
 645     <param>
 646       <key>_coordinate</key>
 647       <value>(1335, 651)</value>
 648     </param>
 649     <param>
 650       <key>_rotation</key>
 651       <value>0</value>
 652     </param>
 653   </block>
 654   <block>
 655     <key>gr_mpsk_receiver_cc</key>
 656     <param>
 657       <key>id</key>
 658       <value>gr_mpsk_receiver_cc_0</value>
 659     </param>
 660     <param>
 661       <key>_enabled</key>
 662       <value>True</value>
 663     </param>
 664     <param>
 665       <key>M</key>
 666       <value>2</value>
 667     </param>
 668     <param>
 669       <key>theta</key>
 670       <value>0</value>
 671     </param>
 672     <param>
 673       <key>alpha</key>
 674       <value>costas_alpha</value>
 675     </param>
 676     <param>
 677       <key>beta</key>
 678       <value>costas_alpha*costas_alpha/4.0</value>
 679     </param>
 680     <param>
 681       <key>fmin</key>
 682       <value>-0.05</value>
 683     </param>
 684     <param>
 685       <key>fmax</key>
 686       <value>0.05</value>
 687     </param>
 688     <param>
 689       <key>mu</key>
 690       <value>0.5</value>
 691     </param>
 692     <param>
 693       <key>gain_mu</key>
 694       <value>gain_mu</value>
 695     </param>
 696     <param>
 697       <key>omega</key>
 698       <value>sps</value>
 699     </param>
 700     <param>
 701       <key>gain_omega</key>
 702       <value>gain_mu*gain_mu/4.0</value>
 703     </param>
 704     <param>
 705       <key>omega_relative_limit</key>
 706       <value>0.05</value>
 707     </param>
 708     <param>
 709       <key>_coordinate</key>
 710       <value>(881, 437)</value>
 711     </param>
 712     <param>
 713       <key>_rotation</key>
 714       <value>0</value>
 715     </param>
 716   </block>
 717   <block>
 718     <key>gr_complex_to_real</key>
 719     <param>
 720       <key>id</key>
 721       <value>gr_complex_to_real_0</value>
 722     </param>
 723     <param>
 724       <key>_enabled</key>
 725       <value>True</value>
 726     </param>
 727     <param>
 728       <key>vlen</key>
 729       <value>1</value>
 730     </param>
 731     <param>
 732       <key>_coordinate</key>
 733       <value>(1133, 521)</value>
 734     </param>
 735     <param>
 736       <key>_rotation</key>
 737       <value>0</value>
 738     </param>
 739   </block>
 740   <block>
 741     <key>gr_char_to_float</key>
 742     <param>
 743       <key>id</key>
 744       <value>gr_char_to_float_0</value>
 745     </param>
 746     <param>
 747       <key>_enabled</key>
 748       <value>True</value>
 749     </param>
 750     <param>
 751       <key>_coordinate</key>
 752       <value>(1523, 521)</value>
 753     </param>
 754     <param>
 755       <key>_rotation</key>
 756       <value>0</value>
 757     </param>
 758   </block>
 759   <block>
 760     <key>gr_binary_slicer_fb</key>
 761     <param>
 762       <key>id</key>
 763       <value>gr_binary_slicer_fb_0</value>
 764     </param>
 765     <param>
 766       <key>_enabled</key>
 767       <value>True</value>
 768     </param>
 769     <param>
 770       <key>_coordinate</key>
 771       <value>(1343, 521)</value>
 772     </param>
 773     <param>
 774       <key>_rotation</key>
 775       <value>0</value>
 776     </param>
 777   </block>
 778   <block>
 779     <key>gr_add_const_vxx</key>
 780     <param>
 781       <key>id</key>
 782       <value>gr_add_const_vxx_0</value>
 783     </param>
 784     <param>
 785       <key>_enabled</key>
 786       <value>True</value>
 787     </param>
 788     <param>
 789       <key>type</key>
 790       <value>float</value>
 791     </param>
 792     <param>
 793       <key>const</key>
 794       <value>48.0</value>
 795     </param>
 796     <param>
 797       <key>vlen</key>
 798       <value>1</value>
 799     </param>
 800     <param>
 801       <key>_coordinate</key>
 802       <value>(1707, 517)</value>
 803     </param>
 804     <param>
 805       <key>_rotation</key>
 806       <value>0</value>
 807     </param>
 808   </block>
 809   <block>
 810     <key>gr_float_to_char</key>
 811     <param>
 812       <key>id</key>
 813       <value>gr_float_to_char_0</value>
 814     </param>
 815     <param>
 816       <key>_enabled</key>
 817       <value>True</value>
 818     </param>
 819     <param>
 820       <key>_coordinate</key>
 821       <value>(1878, 521)</value>
 822     </param>
 823     <param>
 824       <key>_rotation</key>
 825       <value>0</value>
 826     </param>
 827   </block>
 828   <block>
 829     <key>gr_file_sink</key>
 830     <param>
 831       <key>id</key>
 832       <value>gr_file_sink_0</value>
 833     </param>
 834     <param>
 835       <key>_enabled</key>
 836       <value>True</value>
 837     </param>
 838     <param>
 839       <key>file</key>
 840       <value>bits.dat</value>
 841     </param>
 842     <param>
 843       <key>type</key>
 844       <value>byte</value>
 845     </param>
 846     <param>
 847       <key>vlen</key>
 848       <value>1</value>
 849     </param>
 850     <param>
 851       <key>_coordinate</key>
 852       <value>(2059, 517)</value>
 853     </param>
 854     <param>
 855       <key>_rotation</key>
 856       <value>0</value>
 857     </param>
 858   </block>
 859   <block>
 860     <key>gr_file_source</key>
 861     <param>
 862       <key>id</key>
 863       <value>gr_file_source_0</value>
 864     </param>
 865     <param>
 866       <key>_enabled</key>
 867       <value>True</value>
 868     </param>
 869     <param>
 870       <key>file</key>
 871       <value>lrit.dat</value>
 872     </param>
 873     <param>
 874       <key>type</key>
 875       <value>complex</value>
 876     </param>
 877     <param>
 878       <key>repeat</key>
 879       <value>False</value>
 880     </param>
 881     <param>
 882       <key>vlen</key>
 883       <value>1</value>
 884     </param>
 885     <param>
 886       <key>_coordinate</key>
 887       <value>(11, 655)</value>
 888     </param>
 889     <param>
 890       <key>_rotation</key>
 891       <value>0</value>
 892     </param>
 893   </block>
 894   <block>
 895     <key>notebook</key>
 896     <param>
 897       <key>id</key>
 898       <value>displays</value>
 899     </param>
 900     <param>
 901       <key>_enabled</key>
 902       <value>True</value>
 903     </param>
 904     <param>
 905       <key>style</key>
 906       <value>wx.NB_TOP</value>
 907     </param>
 908     <param>
 909       <key>labels</key>
 910       <value>['USRP RX', 'Costas Output']</value>
 911     </param>
 912     <param>
 913       <key>grid_pos</key>
 914       <value>2, 0, 1, 3</value>
 915     </param>
 916     <param>
 917       <key>notebook</key>
 918       <value></value>
 919     </param>
 920     <param>
 921       <key>_coordinate</key>
 922       <value>(14, 351)</value>
 923     </param>
 924     <param>
 925       <key>_rotation</key>
 926       <value>0</value>
 927     </param>
 928   </block>
 929   <block>
 930     <key>variable_config</key>
 931     <param>
 932       <key>id</key>
 933       <value>saved_decim</value>
 934     </param>
 935     <param>
 936       <key>_enabled</key>
 937       <value>True</value>
 938     </param>
 939     <param>
 940       <key>value</key>
 941       <value>160</value>
 942     </param>
 943     <param>
 944       <key>type</key>
 945       <value>int</value>
 946     </param>
 947     <param>
 948       <key>config_file</key>
 949       <value>config_filename</value>
 950     </param>
 951     <param>
 952       <key>section</key>
 953       <value>main</value>
 954     </param>
 955     <param>
 956       <key>option</key>
 957       <value>decim</value>
 958     </param>
 959     <param>
 960       <key>writeback</key>
 961       <value>decim</value>
 962     </param>
 963     <param>
 964       <key>_coordinate</key>
 965       <value>(246, 172)</value>
 966     </param>
 967     <param>
 968       <key>_rotation</key>
 969       <value>0</value>
 970     </param>
 971   </block>
 972   <block>
 973     <key>variable_slider</key>
 974     <param>
 975       <key>id</key>
 976       <value>gain</value>
 977     </param>
 978     <param>
 979       <key>_enabled</key>
 980       <value>True</value>
 981     </param>
 982     <param>
 983       <key>label</key>
 984       <value>Gain</value>
 985     </param>
 986     <param>
 987       <key>value</key>
 988       <value>saved_gain</value>
 989     </param>
 990     <param>
 991       <key>min</key>
 992       <value>0</value>
 993     </param>
 994     <param>
 995       <key>max</key>
 996       <value>115</value>
 997     </param>
 998     <param>
 999       <key>num_steps</key>
1000       <value>115</value>
1001     </param>
1002     <param>
1003       <key>style</key>
1004       <value>wx.SL_HORIZONTAL</value>
1005     </param>
1006     <param>
1007       <key>converver</key>
1008       <value>float_converter</value>
1009     </param>
1010     <param>
1011       <key>grid_pos</key>
1012       <value>0, 1, 1, 1</value>
1013     </param>
1014     <param>
1015       <key>notebook</key>
1016       <value></value>
1017     </param>
1018     <param>
1019       <key>_coordinate</key>
1020       <value>(411, 11)</value>
1021     </param>
1022     <param>
1023       <key>_rotation</key>
1024       <value>0</value>
1025     </param>
1026   </block>
1027   <block>
1028     <key>variable_config</key>
1029     <param>
1030       <key>id</key>
1031       <value>saved_gain</value>
1032     </param>
1033     <param>
1034       <key>_enabled</key>
1035       <value>True</value>
1036     </param>
1037     <param>
1038       <key>value</key>
1039       <value>33</value>
1040     </param>
1041     <param>
1042       <key>type</key>
1043       <value>real</value>
1044     </param>
1045     <param>
1046       <key>config_file</key>
1047       <value>config_filename</value>
1048     </param>
1049     <param>
1050       <key>section</key>
1051       <value>main</value>
1052     </param>
1053     <param>
1054       <key>option</key>
1055       <value>gain</value>
1056     </param>
1057     <param>
1058       <key>writeback</key>
1059       <value>gain</value>
1060     </param>
1061     <param>
1062       <key>_coordinate</key>
1063       <value>(412, 172)</value>
1064     </param>
1065     <param>
1066       <key>_rotation</key>
1067       <value>0</value>
1068     </param>
1069   </block>
1070   <block>
1071     <key>variable_slider</key>
1072     <param>
1073       <key>id</key>
1074       <value>freq</value>
1075     </param>
1076     <param>
1077       <key>_enabled</key>
1078       <value>True</value>
1079     </param>
1080     <param>
1081       <key>label</key>
1082       <value>Frequency</value>
1083     </param>
1084     <param>
1085       <key>value</key>
1086       <value>saved_freq</value>
1087     </param>
1088     <param>
1089       <key>min</key>
1090       <value>135e6</value>
1091     </param>
1092     <param>
1093       <key>max</key>
1094       <value>139e6</value>
1095     </param>
1096     <param>
1097       <key>num_steps</key>
1098       <value>400</value>
1099     </param>
1100     <param>
1101       <key>style</key>
1102       <value>wx.SL_HORIZONTAL</value>
1103     </param>
1104     <param>
1105       <key>converver</key>
1106       <value>float_converter</value>
1107     </param>
1108     <param>
1109       <key>grid_pos</key>
1110       <value>0, 2, 1, 1</value>
1111     </param>
1112     <param>
1113       <key>notebook</key>
1114       <value></value>
1115     </param>
1116     <param>
1117       <key>_coordinate</key>
1118       <value>(574, 12)</value>
1119     </param>
1120     <param>
1121       <key>_rotation</key>
1122       <value>0</value>
1123     </param>
1124   </block>
1125   <block>
1126     <key>variable_config</key>
1127     <param>
1128       <key>id</key>
1129       <value>saved_freq</value>
1130     </param>
1131     <param>
1132       <key>_enabled</key>
1133       <value>True</value>
1134     </param>
1135     <param>
1136       <key>value</key>
1137       <value>137e6</value>
1138     </param>
1139     <param>
1140       <key>type</key>
1141       <value>real</value>
1142     </param>
1143     <param>
1144       <key>config_file</key>
1145       <value>config_filename</value>
1146     </param>
1147     <param>
1148       <key>section</key>
1149       <value>main</value>
1150     </param>
1151     <param>
1152       <key>option</key>
1153       <value>freq</value>
1154     </param>
1155     <param>
1156       <key>writeback</key>
1157       <value>freq</value>
1158     </param>
1159     <param>
1160       <key>_coordinate</key>
1161       <value>(576, 170)</value>
1162     </param>
1163     <param>
1164       <key>_rotation</key>
1165       <value>0</value>
1166     </param>
1167   </block>
1168   <block>
1169     <key>variable_slider</key>
1170     <param>
1171       <key>id</key>
1172       <value>costas_alpha</value>
1173     </param>
1174     <param>
1175       <key>_enabled</key>
1176       <value>True</value>
1177     </param>
1178     <param>
1179       <key>label</key>
1180       <value>Costas Alpha</value>
1181     </param>
1182     <param>
1183       <key>value</key>
1184       <value>saved_costas_alpha</value>
1185     </param>
1186     <param>
1187       <key>min</key>
1188       <value>0</value>
1189     </param>
1190     <param>
1191       <key>max</key>
1192       <value>0.5</value>
1193     </param>
1194     <param>
1195       <key>num_steps</key>
1196       <value>100</value>
1197     </param>
1198     <param>
1199       <key>style</key>
1200       <value>wx.SL_HORIZONTAL</value>
1201     </param>
1202     <param>
1203       <key>converver</key>
1204       <value>float_converter</value>
1205     </param>
1206     <param>
1207       <key>grid_pos</key>
1208       <value>1, 0, 1, 1</value>
1209     </param>
1210     <param>
1211       <key>notebook</key>
1212       <value></value>
1213     </param>
1214     <param>
1215       <key>_coordinate</key>
1216       <value>(738, 13)</value>
1217     </param>
1218     <param>
1219       <key>_rotation</key>
1220       <value>0</value>
1221     </param>
1222   </block>
1223   <block>
1224     <key>variable_config</key>
1225     <param>
1226       <key>id</key>
1227       <value>saved_costas_alpha</value>
1228     </param>
1229     <param>
1230       <key>_enabled</key>
1231       <value>True</value>
1232     </param>
1233     <param>
1234       <key>value</key>
1235       <value>0.005</value>
1236     </param>
1237     <param>
1238       <key>type</key>
1239       <value>real</value>
1240     </param>
1241     <param>
1242       <key>config_file</key>
1243       <value>config_filename</value>
1244     </param>
1245     <param>
1246       <key>section</key>
1247       <value>main</value>
1248     </param>
1249     <param>
1250       <key>option</key>
1251       <value>costas_alpha</value>
1252     </param>
1253     <param>
1254       <key>writeback</key>
1255       <value>costas_alpha</value>
1256     </param>
1257     <param>
1258       <key>_coordinate</key>
1259       <value>(739, 170)</value>
1260     </param>
1261     <param>
1262       <key>_rotation</key>
1263       <value>0</value>
1264     </param>
1265   </block>
1266   <block>
1267     <key>variable_config</key>
1268     <param>
1269       <key>id</key>
1270       <value>saved_gain_mu</value>
1271     </param>
1272     <param>
1273       <key>_enabled</key>
1274       <value>True</value>
1275     </param>
1276     <param>
1277       <key>value</key>
1278       <value>0.005</value>
1279     </param>
1280     <param>
1281       <key>type</key>
1282       <value>real</value>
1283     </param>
1284     <param>
1285       <key>config_file</key>
1286       <value>config_filename</value>
1287     </param>
1288     <param>
1289       <key>section</key>
1290       <value>main</value>
1291     </param>
1292     <param>
1293       <key>option</key>
1294       <value>gain_mu</value>
1295     </param>
1296     <param>
1297       <key>writeback</key>
1298       <value>gain_mu</value>
1299     </param>
1300     <param>
1301       <key>_coordinate</key>
1302       <value>(900, 170)</value>
1303     </param>
1304     <param>
1305       <key>_rotation</key>
1306       <value>0</value>
1307     </param>
1308   </block>
1309   <block>
1310     <key>variable_slider</key>
1311     <param>
1312       <key>id</key>
1313       <value>gain_mu</value>
1314     </param>
1315     <param>
1316       <key>_enabled</key>
1317       <value>True</value>
1318     </param>
1319     <param>
1320       <key>label</key>
1321       <value>Gain Mu</value>
1322     </param>
1323     <param>
1324       <key>value</key>
1325       <value>saved_gain_mu</value>
1326     </param>
1327     <param>
1328       <key>min</key>
1329       <value>0</value>
1330     </param>
1331     <param>
1332       <key>max</key>
1333       <value>0.5</value>
1334     </param>
1335     <param>
1336       <key>num_steps</key>
1337       <value>100</value>
1338     </param>
1339     <param>
1340       <key>style</key>
1341       <value>wx.SL_HORIZONTAL</value>
1342     </param>
1343     <param>
1344       <key>converver</key>
1345       <value>float_converter</value>
1346     </param>
1347     <param>
1348       <key>grid_pos</key>
1349       <value>1, 1, 1, 1</value>
1350     </param>
1351     <param>
1352       <key>notebook</key>
1353       <value></value>
1354     </param>
1355     <param>
1356       <key>_coordinate</key>
1357       <value>(902, 13)</value>
1358     </param>
1359     <param>
1360       <key>_rotation</key>
1361       <value>0</value>
1362     </param>
1363   </block>
1364   <block>
1365     <key>variable</key>
1366     <param>
1367       <key>id</key>
1368       <value>config_filename</value>
1369     </param>
1370     <param>
1371       <key>_enabled</key>
1372       <value>True</value>
1373     </param>
1374     <param>
1375       <key>value</key>
1376       <value>"usrp_rx_lrit.cfg"</value>
1377     </param>
1378     <param>
1379       <key>_coordinate</key>
1380       <value>(13, 283)</value>
1381     </param>
1382     <param>
1383       <key>_rotation</key>
1384       <value>0</value>
1385     </param>
1386   </block>
1387   <connection>
1388     <source_block_id>usrp_simple_source_x_0</source_block_id>
1389     <sink_block_id>gr_agc_xx_0</sink_block_id>
1390     <source_key>0</source_key>
1391     <sink_key>0</sink_key>
1392   </connection>
1393   <connection>
1394     <source_block_id>gr_agc_xx_0</source_block_id>
1395     <sink_block_id>wxgui_scopesink2_0</sink_block_id>
1396     <source_key>0</source_key>
1397     <sink_key>0</sink_key>
1398   </connection>
1399   <connection>
1400     <source_block_id>gr_file_source_0</source_block_id>
1401     <sink_block_id>gr_throttle_0</sink_block_id>
1402     <source_key>0</source_key>
1403     <sink_key>0</sink_key>
1404   </connection>
1405   <connection>
1406     <source_block_id>gr_throttle_0</source_block_id>
1407     <sink_block_id>gr_agc_xx_0</sink_block_id>
1408     <source_key>0</source_key>
1409     <sink_key>0</sink_key>
1410   </connection>
1411   <connection>
1412     <source_block_id>gr_probe_mpsk_snr_c_0</source_block_id>
1413     <sink_block_id>wxgui_numbersink2_0</sink_block_id>
1414     <source_key>0</source_key>
1415     <sink_key>0</sink_key>
1416   </connection>
1417   <connection>
1418     <source_block_id>gr_mpsk_receiver_cc_0</source_block_id>
1419     <sink_block_id>gr_probe_mpsk_snr_c_0</sink_block_id>
1420     <source_key>0</source_key>
1421     <sink_key>0</sink_key>
1422   </connection>
1423   <connection>
1424     <source_block_id>gr_agc_xx_0</source_block_id>
1425     <sink_block_id>gr_mpsk_receiver_cc_0</sink_block_id>
1426     <source_key>0</source_key>
1427     <sink_key>0</sink_key>
1428   </connection>
1429   <connection>
1430     <source_block_id>gr_mpsk_receiver_cc_0</source_block_id>
1431     <sink_block_id>wxgui_scopesink2_1</sink_block_id>
1432     <source_key>0</source_key>
1433     <sink_key>0</sink_key>
1434   </connection>
1435   <connection>
1436     <source_block_id>gr_agc_xx_0</source_block_id>
1437     <sink_block_id>wxgui_fftsink2_0</sink_block_id>
1438     <source_key>0</source_key>
1439     <sink_key>0</sink_key>
1440   </connection>
1441   <connection>
1442     <source_block_id>gr_mpsk_receiver_cc_0</source_block_id>
1443     <sink_block_id>gr_complex_to_real_0</sink_block_id>
1444     <source_key>0</source_key>
1445     <sink_key>0</sink_key>
1446   </connection>
1447   <connection>
1448     <source_block_id>gr_complex_to_real_0</source_block_id>
1449     <sink_block_id>gr_binary_slicer_fb_0</sink_block_id>
1450     <source_key>0</source_key>
1451     <sink_key>0</sink_key>
1452   </connection>
1453   <connection>
1454     <source_block_id>gr_binary_slicer_fb_0</source_block_id>
1455     <sink_block_id>gr_char_to_float_0</sink_block_id>
1456     <source_key>0</source_key>
1457     <sink_key>0</sink_key>
1458   </connection>
1459   <connection>
1460     <source_block_id>gr_char_to_float_0</source_block_id>
1461     <sink_block_id>gr_add_const_vxx_0</sink_block_id>
1462     <source_key>0</source_key>
1463     <sink_key>0</sink_key>
1464   </connection>
1465   <connection>
1466     <source_block_id>gr_add_const_vxx_0</source_block_id>
1467     <sink_block_id>gr_float_to_char_0</sink_block_id>
1468     <source_key>0</source_key>
1469     <sink_key>0</sink_key>
1470   </connection>
1471   <connection>
1472     <source_block_id>gr_float_to_char_0</source_block_id>
1473     <sink_block_id>gr_file_sink_0</sink_block_id>
1474     <source_key>0</source_key>
1475     <sink_key>0</sink_key>
1476   </connection>
1477 </flow_graph>