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Rich's modified FM radio receiver (GNU Radio)

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Apr 30th, 2012
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  1. <?xml version='1.0' encoding='ASCII'?>
  2. <flow_graph>
  3. <timestamp>Mon Apr 30 19:15:44 2012</timestamp>
  4. <block>
  5. <key>options</key>
  6. <param>
  7. <key>id</key>
  8. <value>top_block</value>
  9. </param>
  10. <param>
  11. <key>_enabled</key>
  12. <value>True</value>
  13. </param>
  14. <param>
  15. <key>title</key>
  16. <value>Rich's Modified Basic FM Receiver</value>
  17. </param>
  18. <param>
  19. <key>author</key>
  20. <value>The guys at #rtlsdr</value>
  21. </param>
  22. <param>
  23. <key>description</key>
  24. <value></value>
  25. </param>
  26. <param>
  27. <key>window_size</key>
  28. <value>1280, 1024</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_options</key>
  40. <value>prompt</value>
  41. </param>
  42. <param>
  43. <key>run</key>
  44. <value>True</value>
  45. </param>
  46. <param>
  47. <key>realtime_scheduling</key>
  48. <value>1</value>
  49. </param>
  50. <param>
  51. <key>_coordinate</key>
  52. <value>(10, 10)</value>
  53. </param>
  54. <param>
  55. <key>_rotation</key>
  56. <value>0</value>
  57. </param>
  58. </block>
  59. <block>
  60. <key>note</key>
  61. <param>
  62. <key>id</key>
  63. <value>note_0</value>
  64. </param>
  65. <param>
  66. <key>_enabled</key>
  67. <value>True</value>
  68. </param>
  69. <param>
  70. <key>note</key>
  71. <value>Volume Multiplier</value>
  72. </param>
  73. <param>
  74. <key>_coordinate</key>
  75. <value>(773, 201)</value>
  76. </param>
  77. <param>
  78. <key>_rotation</key>
  79. <value>0</value>
  80. </param>
  81. </block>
  82. <block>
  83. <key>gr_multiply_const_vxx</key>
  84. <param>
  85. <key>id</key>
  86. <value>gr_multiply_const_vxx_0</value>
  87. </param>
  88. <param>
  89. <key>_enabled</key>
  90. <value>True</value>
  91. </param>
  92. <param>
  93. <key>type</key>
  94. <value>float</value>
  95. </param>
  96. <param>
  97. <key>const</key>
  98. <value>volume</value>
  99. </param>
  100. <param>
  101. <key>vlen</key>
  102. <value>1</value>
  103. </param>
  104. <param>
  105. <key>_coordinate</key>
  106. <value>(640, 201)</value>
  107. </param>
  108. <param>
  109. <key>_rotation</key>
  110. <value>0</value>
  111. </param>
  112. </block>
  113. <block>
  114. <key>blks2_fm_deemph</key>
  115. <param>
  116. <key>id</key>
  117. <value>blks2_fm_deemph_0</value>
  118. </param>
  119. <param>
  120. <key>_enabled</key>
  121. <value>True</value>
  122. </param>
  123. <param>
  124. <key>samp_rate</key>
  125. <value>samp_rate/10</value>
  126. </param>
  127. <param>
  128. <key>tau</key>
  129. <value>50e-6</value>
  130. </param>
  131. <param>
  132. <key>_coordinate</key>
  133. <value>(866, 40)</value>
  134. </param>
  135. <param>
  136. <key>_rotation</key>
  137. <value>0</value>
  138. </param>
  139. </block>
  140. <block>
  141. <key>blks2_wfm_rcv</key>
  142. <param>
  143. <key>id</key>
  144. <value>blks2_wfm_rcv_0</value>
  145. </param>
  146. <param>
  147. <key>_enabled</key>
  148. <value>True</value>
  149. </param>
  150. <param>
  151. <key>quad_rate</key>
  152. <value>samp_rate/5</value>
  153. </param>
  154. <param>
  155. <key>audio_decimation</key>
  156. <value>2</value>
  157. </param>
  158. <param>
  159. <key>_coordinate</key>
  160. <value>(440, 0)</value>
  161. </param>
  162. <param>
  163. <key>_rotation</key>
  164. <value>0</value>
  165. </param>
  166. </block>
  167. <block>
  168. <key>wxgui_fftsink2</key>
  169. <param>
  170. <key>id</key>
  171. <value>wxgui_fftsink2_0</value>
  172. </param>
  173. <param>
  174. <key>_enabled</key>
  175. <value>True</value>
  176. </param>
  177. <param>
  178. <key>type</key>
  179. <value>float</value>
  180. </param>
  181. <param>
  182. <key>title</key>
  183. <value>FFT Plot</value>
  184. </param>
  185. <param>
  186. <key>samp_rate</key>
  187. <value>samp_rate/10</value>
  188. </param>
  189. <param>
  190. <key>baseband_freq</key>
  191. <value>0</value>
  192. </param>
  193. <param>
  194. <key>y_per_div</key>
  195. <value>10</value>
  196. </param>
  197. <param>
  198. <key>y_divs</key>
  199. <value>10</value>
  200. </param>
  201. <param>
  202. <key>ref_level</key>
  203. <value>0</value>
  204. </param>
  205. <param>
  206. <key>ref_scale</key>
  207. <value>2.0</value>
  208. </param>
  209. <param>
  210. <key>fft_size</key>
  211. <value>1024</value>
  212. </param>
  213. <param>
  214. <key>fft_rate</key>
  215. <value>15</value>
  216. </param>
  217. <param>
  218. <key>peak_hold</key>
  219. <value>False</value>
  220. </param>
  221. <param>
  222. <key>average</key>
  223. <value>False</value>
  224. </param>
  225. <param>
  226. <key>avg_alpha</key>
  227. <value>0</value>
  228. </param>
  229. <param>
  230. <key>win</key>
  231. <value>None</value>
  232. </param>
  233. <param>
  234. <key>win_size</key>
  235. <value></value>
  236. </param>
  237. <param>
  238. <key>grid_pos</key>
  239. <value></value>
  240. </param>
  241. <param>
  242. <key>notebook</key>
  243. <value></value>
  244. </param>
  245. <param>
  246. <key>_coordinate</key>
  247. <value>(461, 73)</value>
  248. </param>
  249. <param>
  250. <key>_rotation</key>
  251. <value>0</value>
  252. </param>
  253. </block>
  254. <block>
  255. <key>low_pass_filter</key>
  256. <param>
  257. <key>id</key>
  258. <value>low_pass_filter_0</value>
  259. </param>
  260. <param>
  261. <key>_enabled</key>
  262. <value>True</value>
  263. </param>
  264. <param>
  265. <key>type</key>
  266. <value>fir_filter_ccf</value>
  267. </param>
  268. <param>
  269. <key>decim</key>
  270. <value>5</value>
  271. </param>
  272. <param>
  273. <key>interp</key>
  274. <value>1</value>
  275. </param>
  276. <param>
  277. <key>gain</key>
  278. <value>gain2</value>
  279. </param>
  280. <param>
  281. <key>samp_rate</key>
  282. <value>samp_rate</value>
  283. </param>
  284. <param>
  285. <key>cutoff_freq</key>
  286. <value>85000</value>
  287. </param>
  288. <param>
  289. <key>width</key>
  290. <value>33000</value>
  291. </param>
  292. <param>
  293. <key>win</key>
  294. <value>firdes.WIN_HAMMING</value>
  295. </param>
  296. <param>
  297. <key>beta</key>
  298. <value>6.76</value>
  299. </param>
  300. <param>
  301. <key>_coordinate</key>
  302. <value>(239, 0)</value>
  303. </param>
  304. <param>
  305. <key>_rotation</key>
  306. <value>0</value>
  307. </param>
  308. </block>
  309. <block>
  310. <key>low_pass_filter</key>
  311. <param>
  312. <key>id</key>
  313. <value>low_pass_filter_1</value>
  314. </param>
  315. <param>
  316. <key>_enabled</key>
  317. <value>True</value>
  318. </param>
  319. <param>
  320. <key>type</key>
  321. <value>fir_filter_fff</value>
  322. </param>
  323. <param>
  324. <key>decim</key>
  325. <value>3</value>
  326. </param>
  327. <param>
  328. <key>interp</key>
  329. <value>1</value>
  330. </param>
  331. <param>
  332. <key>gain</key>
  333. <value>gain3</value>
  334. </param>
  335. <param>
  336. <key>samp_rate</key>
  337. <value>samp_rate/10</value>
  338. </param>
  339. <param>
  340. <key>cutoff_freq</key>
  341. <value>15000</value>
  342. </param>
  343. <param>
  344. <key>width</key>
  345. <value>5000</value>
  346. </param>
  347. <param>
  348. <key>win</key>
  349. <value>firdes.WIN_HAMMING</value>
  350. </param>
  351. <param>
  352. <key>beta</key>
  353. <value>6.76</value>
  354. </param>
  355. <param>
  356. <key>_coordinate</key>
  357. <value>(662, 0)</value>
  358. </param>
  359. <param>
  360. <key>_rotation</key>
  361. <value>0</value>
  362. </param>
  363. </block>
  364. <block>
  365. <key>osmosdr_source_c</key>
  366. <param>
  367. <key>id</key>
  368. <value>osmosdr_source_c_0</value>
  369. </param>
  370. <param>
  371. <key>_enabled</key>
  372. <value>True</value>
  373. </param>
  374. <param>
  375. <key>args</key>
  376. <value></value>
  377. </param>
  378. <param>
  379. <key>freq</key>
  380. <value>frequency*100000</value>
  381. </param>
  382. <param>
  383. <key>corr</key>
  384. <value>0</value>
  385. </param>
  386. <param>
  387. <key>rate</key>
  388. <value>samp_rate</value>
  389. </param>
  390. <param>
  391. <key>gain</key>
  392. <value>gain</value>
  393. </param>
  394. <param>
  395. <key>antenna</key>
  396. <value></value>
  397. </param>
  398. <param>
  399. <key>_coordinate</key>
  400. <value>(10, 124)</value>
  401. </param>
  402. <param>
  403. <key>_rotation</key>
  404. <value>0</value>
  405. </param>
  406. </block>
  407. <block>
  408. <key>variable_slider</key>
  409. <param>
  410. <key>id</key>
  411. <value>gain</value>
  412. </param>
  413. <param>
  414. <key>_enabled</key>
  415. <value>True</value>
  416. </param>
  417. <param>
  418. <key>label</key>
  419. <value>Gain</value>
  420. </param>
  421. <param>
  422. <key>value</key>
  423. <value>100</value>
  424. </param>
  425. <param>
  426. <key>min</key>
  427. <value>0</value>
  428. </param>
  429. <param>
  430. <key>max</key>
  431. <value>100</value>
  432. </param>
  433. <param>
  434. <key>num_steps</key>
  435. <value>100</value>
  436. </param>
  437. <param>
  438. <key>style</key>
  439. <value>wx.SL_HORIZONTAL</value>
  440. </param>
  441. <param>
  442. <key>converver</key>
  443. <value>int_converter</value>
  444. </param>
  445. <param>
  446. <key>grid_pos</key>
  447. <value>1,1,1,2</value>
  448. </param>
  449. <param>
  450. <key>notebook</key>
  451. <value></value>
  452. </param>
  453. <param>
  454. <key>_coordinate</key>
  455. <value>(11, 407)</value>
  456. </param>
  457. <param>
  458. <key>_rotation</key>
  459. <value>0</value>
  460. </param>
  461. </block>
  462. <block>
  463. <key>variable_slider</key>
  464. <param>
  465. <key>id</key>
  466. <value>gain3</value>
  467. </param>
  468. <param>
  469. <key>_enabled</key>
  470. <value>True</value>
  471. </param>
  472. <param>
  473. <key>label</key>
  474. <value>LPF Gain 2</value>
  475. </param>
  476. <param>
  477. <key>value</key>
  478. <value>10</value>
  479. </param>
  480. <param>
  481. <key>min</key>
  482. <value>0</value>
  483. </param>
  484. <param>
  485. <key>max</key>
  486. <value>100</value>
  487. </param>
  488. <param>
  489. <key>num_steps</key>
  490. <value>100</value>
  491. </param>
  492. <param>
  493. <key>style</key>
  494. <value>wx.SL_HORIZONTAL</value>
  495. </param>
  496. <param>
  497. <key>converver</key>
  498. <value>int_converter</value>
  499. </param>
  500. <param>
  501. <key>grid_pos</key>
  502. <value>1,5,1,2</value>
  503. </param>
  504. <param>
  505. <key>notebook</key>
  506. <value></value>
  507. </param>
  508. <param>
  509. <key>_coordinate</key>
  510. <value>(298, 408)</value>
  511. </param>
  512. <param>
  513. <key>_rotation</key>
  514. <value>0</value>
  515. </param>
  516. </block>
  517. <block>
  518. <key>variable_slider</key>
  519. <param>
  520. <key>id</key>
  521. <value>volume</value>
  522. </param>
  523. <param>
  524. <key>_enabled</key>
  525. <value>True</value>
  526. </param>
  527. <param>
  528. <key>label</key>
  529. <value>Volume</value>
  530. </param>
  531. <param>
  532. <key>value</key>
  533. <value>1.0</value>
  534. </param>
  535. <param>
  536. <key>min</key>
  537. <value>1.0</value>
  538. </param>
  539. <param>
  540. <key>max</key>
  541. <value>11.0</value>
  542. </param>
  543. <param>
  544. <key>num_steps</key>
  545. <value>100</value>
  546. </param>
  547. <param>
  548. <key>style</key>
  549. <value>wx.SL_HORIZONTAL</value>
  550. </param>
  551. <param>
  552. <key>converver</key>
  553. <value>float_converter</value>
  554. </param>
  555. <param>
  556. <key>grid_pos</key>
  557. <value>1,7,1,1</value>
  558. </param>
  559. <param>
  560. <key>notebook</key>
  561. <value></value>
  562. </param>
  563. <param>
  564. <key>_coordinate</key>
  565. <value>(640, 250)</value>
  566. </param>
  567. <param>
  568. <key>_rotation</key>
  569. <value>0</value>
  570. </param>
  571. </block>
  572. <block>
  573. <key>wxgui_waterfallsink2</key>
  574. <param>
  575. <key>id</key>
  576. <value>wxgui_waterfallsink2_0</value>
  577. </param>
  578. <param>
  579. <key>_enabled</key>
  580. <value>True</value>
  581. </param>
  582. <param>
  583. <key>type</key>
  584. <value>complex</value>
  585. </param>
  586. <param>
  587. <key>title</key>
  588. <value>Waterfall Plot</value>
  589. </param>
  590. <param>
  591. <key>samp_rate</key>
  592. <value>samp_rate</value>
  593. </param>
  594. <param>
  595. <key>baseband_freq</key>
  596. <value>0</value>
  597. </param>
  598. <param>
  599. <key>dynamic_range</key>
  600. <value>100</value>
  601. </param>
  602. <param>
  603. <key>ref_level</key>
  604. <value>0</value>
  605. </param>
  606. <param>
  607. <key>ref_scale</key>
  608. <value>2.0</value>
  609. </param>
  610. <param>
  611. <key>fft_size</key>
  612. <value>512</value>
  613. </param>
  614. <param>
  615. <key>fft_rate</key>
  616. <value>15</value>
  617. </param>
  618. <param>
  619. <key>average</key>
  620. <value>False</value>
  621. </param>
  622. <param>
  623. <key>avg_alpha</key>
  624. <value>0</value>
  625. </param>
  626. <param>
  627. <key>win</key>
  628. <value>None</value>
  629. </param>
  630. <param>
  631. <key>win_size</key>
  632. <value></value>
  633. </param>
  634. <param>
  635. <key>grid_pos</key>
  636. <value></value>
  637. </param>
  638. <param>
  639. <key>notebook</key>
  640. <value></value>
  641. </param>
  642. <param>
  643. <key>_coordinate</key>
  644. <value>(452, 255)</value>
  645. </param>
  646. <param>
  647. <key>_rotation</key>
  648. <value>0</value>
  649. </param>
  650. </block>
  651. <block>
  652. <key>variable_slider</key>
  653. <param>
  654. <key>id</key>
  655. <value>samp_rate</value>
  656. </param>
  657. <param>
  658. <key>_enabled</key>
  659. <value>True</value>
  660. </param>
  661. <param>
  662. <key>label</key>
  663. <value>Sample Rate</value>
  664. </param>
  665. <param>
  666. <key>value</key>
  667. <value>1440000</value>
  668. </param>
  669. <param>
  670. <key>min</key>
  671. <value>800000</value>
  672. </param>
  673. <param>
  674. <key>max</key>
  675. <value>3200000</value>
  676. </param>
  677. <param>
  678. <key>num_steps</key>
  679. <value>100</value>
  680. </param>
  681. <param>
  682. <key>style</key>
  683. <value>wx.SL_HORIZONTAL</value>
  684. </param>
  685. <param>
  686. <key>converver</key>
  687. <value>int_converter</value>
  688. </param>
  689. <param>
  690. <key>grid_pos</key>
  691. <value>0,7,1,1</value>
  692. </param>
  693. <param>
  694. <key>notebook</key>
  695. <value></value>
  696. </param>
  697. <param>
  698. <key>_coordinate</key>
  699. <value>(152, 262)</value>
  700. </param>
  701. <param>
  702. <key>_rotation</key>
  703. <value>0</value>
  704. </param>
  705. </block>
  706. <block>
  707. <key>variable_slider</key>
  708. <param>
  709. <key>id</key>
  710. <value>frequency</value>
  711. </param>
  712. <param>
  713. <key>_enabled</key>
  714. <value>True</value>
  715. </param>
  716. <param>
  717. <key>label</key>
  718. <value>frequency</value>
  719. </param>
  720. <param>
  721. <key>value</key>
  722. <value>893</value>
  723. </param>
  724. <param>
  725. <key>min</key>
  726. <value>800</value>
  727. </param>
  728. <param>
  729. <key>max</key>
  730. <value>1080</value>
  731. </param>
  732. <param>
  733. <key>num_steps</key>
  734. <value>280</value>
  735. </param>
  736. <param>
  737. <key>style</key>
  738. <value>wx.SL_HORIZONTAL</value>
  739. </param>
  740. <param>
  741. <key>converver</key>
  742. <value>int_converter</value>
  743. </param>
  744. <param>
  745. <key>grid_pos</key>
  746. <value>0,1,1,6</value>
  747. </param>
  748. <param>
  749. <key>notebook</key>
  750. <value></value>
  751. </param>
  752. <param>
  753. <key>_coordinate</key>
  754. <value>(11, 263)</value>
  755. </param>
  756. <param>
  757. <key>_rotation</key>
  758. <value>0</value>
  759. </param>
  760. </block>
  761. <block>
  762. <key>variable_slider</key>
  763. <param>
  764. <key>id</key>
  765. <value>gain2</value>
  766. </param>
  767. <param>
  768. <key>_enabled</key>
  769. <value>True</value>
  770. </param>
  771. <param>
  772. <key>label</key>
  773. <value>LPF Gain 1</value>
  774. </param>
  775. <param>
  776. <key>value</key>
  777. <value>25</value>
  778. </param>
  779. <param>
  780. <key>min</key>
  781. <value>0</value>
  782. </param>
  783. <param>
  784. <key>max</key>
  785. <value>100</value>
  786. </param>
  787. <param>
  788. <key>num_steps</key>
  789. <value>100</value>
  790. </param>
  791. <param>
  792. <key>style</key>
  793. <value>wx.SL_HORIZONTAL</value>
  794. </param>
  795. <param>
  796. <key>converver</key>
  797. <value>int_converter</value>
  798. </param>
  799. <param>
  800. <key>grid_pos</key>
  801. <value>1,3,1,2</value>
  802. </param>
  803. <param>
  804. <key>notebook</key>
  805. <value></value>
  806. </param>
  807. <param>
  808. <key>_coordinate</key>
  809. <value>(152, 407)</value>
  810. </param>
  811. <param>
  812. <key>_rotation</key>
  813. <value>0</value>
  814. </param>
  815. </block>
  816. <block>
  817. <key>rtl2832_source</key>
  818. <param>
  819. <key>id</key>
  820. <value>rtl2832_source_0</value>
  821. </param>
  822. <param>
  823. <key>_enabled</key>
  824. <value>False</value>
  825. </param>
  826. <param>
  827. <key>verbose</key>
  828. <value>True</value>
  829. </param>
  830. <param>
  831. <key>sample_rate</key>
  832. <value>samp_rate</value>
  833. </param>
  834. <param>
  835. <key>frequency</key>
  836. <value>frequency*100000</value>
  837. </param>
  838. <param>
  839. <key>bandwidth</key>
  840. <value>0</value>
  841. </param>
  842. <param>
  843. <key>relative_gain</key>
  844. <value>False</value>
  845. </param>
  846. <param>
  847. <key>gain</key>
  848. <value>gain</value>
  849. </param>
  850. <param>
  851. <key>gain_mode</key>
  852. <value></value>
  853. </param>
  854. <param>
  855. <key>auto_gain_mode</key>
  856. <value>False</value>
  857. </param>
  858. <param>
  859. <key>usb_vid</key>
  860. <value>0x0</value>
  861. </param>
  862. <param>
  863. <key>usb_pid</key>
  864. <value>0x0</value>
  865. </param>
  866. <param>
  867. <key>tuner_name</key>
  868. <value></value>
  869. </param>
  870. <param>
  871. <key>read_length</key>
  872. <value>0</value>
  873. </param>
  874. <param>
  875. <key>xfer_timeout</key>
  876. <value>0</value>
  877. </param>
  878. <param>
  879. <key>use_buffer</key>
  880. <value>True</value>
  881. </param>
  882. <param>
  883. <key>buf_mul</key>
  884. <value>0</value>
  885. </param>
  886. <param>
  887. <key>buf_level</key>
  888. <value>0</value>
  889. </param>
  890. <param>
  891. <key>fir_coeffs</key>
  892. <value>[]</value>
  893. </param>
  894. <param>
  895. <key>xtal_freq</key>
  896. <value>0</value>
  897. </param>
  898. <param>
  899. <key>_coordinate</key>
  900. <value>(239, 146)</value>
  901. </param>
  902. <param>
  903. <key>_rotation</key>
  904. <value>0</value>
  905. </param>
  906. </block>
  907. <block>
  908. <key>audio_sink</key>
  909. <param>
  910. <key>id</key>
  911. <value>audio_sink_0</value>
  912. </param>
  913. <param>
  914. <key>_enabled</key>
  915. <value>True</value>
  916. </param>
  917. <param>
  918. <key>samp_rate</key>
  919. <value>48000</value>
  920. </param>
  921. <param>
  922. <key>device_name</key>
  923. <value>pulse</value>
  924. </param>
  925. <param>
  926. <key>ok_to_block</key>
  927. <value>True</value>
  928. </param>
  929. <param>
  930. <key>num_inputs</key>
  931. <value>1</value>
  932. </param>
  933. <param>
  934. <key>_coordinate</key>
  935. <value>(961, 191)</value>
  936. </param>
  937. <param>
  938. <key>_rotation</key>
  939. <value>0</value>
  940. </param>
  941. </block>
  942. <block>
  943. <key>note</key>
  944. <param>
  945. <key>id</key>
  946. <value>AudioSinkHelp</value>
  947. </param>
  948. <param>
  949. <key>_enabled</key>
  950. <value>True</value>
  951. </param>
  952. <param>
  953. <key>note</key>
  954. <value>ALSA, "hw:0,0" , etc, Pulseaudio "pulse"</value>
  955. </param>
  956. <param>
  957. <key>_coordinate</key>
  958. <value>(926, 255)</value>
  959. </param>
  960. <param>
  961. <key>_rotation</key>
  962. <value>0</value>
  963. </param>
  964. </block>
  965. <block>
  966. <key>note</key>
  967. <param>
  968. <key>id</key>
  969. <value>note_1</value>
  970. </param>
  971. <param>
  972. <key>_enabled</key>
  973. <value>True</value>
  974. </param>
  975. <param>
  976. <key>note</key>
  977. <value>Before low pass.</value>
  978. </param>
  979. <param>
  980. <key>_coordinate</key>
  981. <value>(317, 270)</value>
  982. </param>
  983. <param>
  984. <key>_rotation</key>
  985. <value>0</value>
  986. </param>
  987. </block>
  988. <block>
  989. <key>note</key>
  990. <param>
  991. <key>id</key>
  992. <value>note_2</value>
  993. </param>
  994. <param>
  995. <key>_enabled</key>
  996. <value>True</value>
  997. </param>
  998. <param>
  999. <key>note</key>
  1000. <value>When entering frequency, 89.3Mhz would be 893</value>
  1001. </param>
  1002. <param>
  1003. <key>_coordinate</key>
  1004. <value>(626, 505)</value>
  1005. </param>
  1006. <param>
  1007. <key>_rotation</key>
  1008. <value>0</value>
  1009. </param>
  1010. </block>
  1011. <connection>
  1012. <source_block_id>blks2_wfm_rcv_0</source_block_id>
  1013. <sink_block_id>low_pass_filter_1</sink_block_id>
  1014. <source_key>0</source_key>
  1015. <sink_key>0</sink_key>
  1016. </connection>
  1017. <connection>
  1018. <source_block_id>low_pass_filter_1</source_block_id>
  1019. <sink_block_id>blks2_fm_deemph_0</sink_block_id>
  1020. <source_key>0</source_key>
  1021. <sink_key>0</sink_key>
  1022. </connection>
  1023. <connection>
  1024. <source_block_id>low_pass_filter_0</source_block_id>
  1025. <sink_block_id>blks2_wfm_rcv_0</sink_block_id>
  1026. <source_key>0</source_key>
  1027. <sink_key>0</sink_key>
  1028. </connection>
  1029. <connection>
  1030. <source_block_id>low_pass_filter_1</source_block_id>
  1031. <sink_block_id>wxgui_fftsink2_0</sink_block_id>
  1032. <source_key>0</source_key>
  1033. <sink_key>0</sink_key>
  1034. </connection>
  1035. <connection>
  1036. <source_block_id>osmosdr_source_c_0</source_block_id>
  1037. <sink_block_id>low_pass_filter_0</sink_block_id>
  1038. <source_key>0</source_key>
  1039. <sink_key>0</sink_key>
  1040. </connection>
  1041. <connection>
  1042. <source_block_id>gr_multiply_const_vxx_0</source_block_id>
  1043. <sink_block_id>audio_sink_0</sink_block_id>
  1044. <source_key>0</source_key>
  1045. <sink_key>0</sink_key>
  1046. </connection>
  1047. <connection>
  1048. <source_block_id>blks2_fm_deemph_0</source_block_id>
  1049. <sink_block_id>gr_multiply_const_vxx_0</sink_block_id>
  1050. <source_key>0</source_key>
  1051. <sink_key>0</sink_key>
  1052. </connection>
  1053. <connection>
  1054. <source_block_id>osmosdr_source_c_0</source_block_id>
  1055. <sink_block_id>wxgui_waterfallsink2_0</sink_block_id>
  1056. <source_key>0</source_key>
  1057. <sink_key>0</sink_key>
  1058. </connection>
  1059. </flow_graph>
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