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11746MSRX--An Improved Receiver for FSK441

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  • Les Rayburn
    Oct 2, 2013
      My earlier question asking if anyone was using the MSRX sofftware
      package for meteor scatter work received only two replies, but one of
      those was very informative. The software was developed by Klaus der
      Heide, DJ5HG. I learned about it from a recent article in DUBUS
      magazine, which is published in Germany, and widely read by VHF
      operators. The software can be downloaded freely at:


      At least a few amateurs are using it in conjunction with WSJT here in
      the states. Both programs can run at the same time on your computer,
      allowing you to achieve a kind of "diversity" reception. My experience
      is limited, but I do find that MSRX will frequently decode marginal
      pings better than WSJT. I also heard from Bryan, N3HJX who included some
      image files. I can't reproduce those in this e-mail, but I think the
      text is worth sharing:

      Yes, I sure do use MSRX quite a bit. It definitely helps decode some
      of the tougher pings on FSK441. I am sure you have tried "clicking
      around" in WSJT's SpecJT to try to get a meaningful decode on a ping,
      and adjusting DF and S up or down to see if you can find the magic
      settings to get a good decode. MSRX, in contrast, will automatically
      find and decode valid text without all the fuss. Compared to default
      WSJT settings with no "clicking around", it is much better.

      Attached are saved decode logs from past QSOs. The "darkness" of the
      text indicates confidence, while the highlight indicates the test
      matches the filter text entered at the top of the window. I usually
      run with my call, "his" call, and "26" in the filters.

      I do run PSK2K as well, but not nearly as often since there are fewer
      users of it. I run it most often with N5TM and WA3LBI. It works well
      for me, but I know others have trouble with it
      due to sound card stability problems.

      - Bryan, N3HJX

      My hope is that we'll see more experimention with both MSRX and PSK2k
      here in the US. If you decide to try the software, I'd love to hear
      about your experiences with it too. See you on the rocks!


      Les Rayburn, N1LF
      121 Mayfair Park
      Maylene, AL 35114

      6M VUCC #1712
      AMSAT #38965
      Grid Bandits #222
      Southeastern VHF Society
      Central States VHF Society Life Member
      Six Club #2484

      Active on 6 Meters thru 1296, 10GHz & Light
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