Decoding P25 with SDR#, DSD, and RTLSDR #2

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This is decoding P25 with DSD and SDR#.You need a very strong signal, and just the correct audio levels and settings. This is video number TWO where I got about a 98% decode. I had about 71% inlevel and it started working great.

Please don't mind the high pitched crackle in the audio, it is a problem with my sound card and NOT an artifact in the decode itself. When decoded there is nice clean audio (well, as clean as you can get with the horrible codec motorola uses!).

  1. proct0r
  2. p25
  3. apco
  4. SDR#
  5. sdrsharp
  6. trunking
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Комментарии
Автор

Nice job! The filter order definitely seems to impact quality...have you tried anything lower? I've had the best luck with '10', but still haven't got anything quite this clear.

jcims
Автор

Cool P25 decode demo. Could you tell us what arguments you're passing to the DSD.exe command to specify the input and output audio devices? Are you interfacing the SDR# and DSD via a third program, such as Virtual Audio Cable?

angelofdeath
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