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SDRANGEL POCSAG quick setup

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Jul 22nd, 2018
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  1. Setup (worked for me POCSAG1200) :
  2. SDR Angel :
  3. - main window: Set center freq close to the channels to listen
  4. - create channel sources
  5. select Device control: UDP channel source.
  6. - Channel settings :
  7. Fmt NFM Mono
  8. FMd 8000
  9. IP addr : 127.0.0.1
  10. P (destination UDP port) : 9981
  11. Au (UDP audio port) : 9982
  12. RFBW 13500
  13. SRout 22050
  14. Gain 0.1 to 0.3 no more !
  15. AGC enabled
  16. disable squelch
  17. - Click on play button, adjust freq offset to ha signal centered on respective channels.
  18.  
  19. Launch POCSAG monitor script below.
  20. All channels are displayed in same file : /tmp/pocsag.txt, with timestamp and channel label.
  21. You don't need sox to resample audio.
  22.  
  23. ################ pocsag_monitor.sh #####################
  24. #!/bin/bash
  25. rm /tmp/pocsag.txt
  26. nc -l -u 9981 | multimon-ng -t raw --timestamp --label POCSAG1 -a POCSAG1200 -a POCSAG2400 -a POCSAG512 -f alpha - >> /tmp/pocsag.txt &
  27. sleep 1
  28. nc -l -u 9983 | multimon-ng -t raw --timestamp --label POCSAG2 -a POCSAG1200 -a POCSAG2400 -a POCSAG512 -f alpha - >> /tmp/pocsag.txt &
  29. sleep 1
  30. nc -l -u 9985 | multimon-ng -t raw --timestamp --label POCSAG3 -a POCSAG1200 -a POCSAG2400 -a POCSAG512 -f alpha - >> /tmp/pocsag.txt &
  31. #sleep 1
  32. #nc -l -u 9987 | multimon-ng -t raw --timestamp --label POCSAG4 -a POCSAG1200 -a POCSAG2400 -a POCSAG512 -f alpha - >> /tmp/pocsag.txt &
  33. sleep 1
  34. tail -f /tmp/pocsag.txt
  35.  
  36. ################## LamaBLeu 07/2018 ###################
  37.  
  38.  
  39. More : channel setup details (from webAPI)
  40.  
  41.  
  42. {
  43. "UDPSrcSettings": {
  44. "agc": 1,
  45. "audioActive": 0,
  46. "audioPort": 9984,
  47. "audioStereo": 0,
  48. "channelMute": 0,
  49. "fmDeviation": 10000,
  50. "gain": 0.30000001192092896,
  51. "inputFrequencyOffset": -73440,
  52. "outputSampleRate": 22050,
  53. "rfBandwidth": 15000,
  54. "rgbColor": -5614336,
  55. "sampleFormat": 3,
  56. "squelchDB": -100,
  57. "squelchEnabled": 0,
  58. "squelchGate": 0,
  59. "title": "466.075 POCSAG2",
  60. "udpAddress": "127.0.0.1",
  61. "udpPort": 9983,
  62. "volume": 20
  63. },
  64. "channelType": "UDPSrc",
  65. "tx": 0
  66. }
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