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Fw: [hfsig] New MT63 software

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  • Paulus
    ... Van: Pawel Jalocha Aan: TAPR HF Special Interest Group Verzonden: woensdag 10 november 1999 13:25
    Message 1 of 3 , Nov 10, 1999
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      ----- Oorspronkelijk bericht -----
      Van: Pawel Jalocha <jalocha@...>
      Aan: TAPR HF Special Interest Group <hfsig@...>
      Verzonden: woensdag 10 november 1999 13:25
      Onderwerp: [hfsig] New MT63 software


      > Well, it's not really new, because the modulation/coding did not change.
      > It is the platform which has changed, as I have written the MT63
      > transmitter and receiver in C++ so it can run on LINUX !
      > It runs on MSDOS too, but as there is no sound support
      > you can only encode and decode audio files. It can still be usefull
      > for simulations or playbacks of pre-recorded audio.
      >
      > Anyway, the MT63 run in real time on LINUX. On my Pentium 133 MHz
      > the transmitter takes 15% of CPU and the receiver 30-40%.
      > I tested the code on Slackware with kernel 2.0.34 and on Red Hat 6.0
      > with kernel 2.2.xx (sorry, don't remember the exact number).
      > On the Red Hat, I can actually let the transmitter output audio
      > through one soundcard while the receiver reads the audio from
      > the other one and there is still some CPU left.
      >
      > The code is in an early stage of developement but it works
      > and it is compatible with the EVM56K code (MT63ASC.ASM).
      > There is no user interface yet, the transmitter and receiver
      > are line commands with options for selecting modes, audio devices, etc.
      > The transmitter transmits text typed on the keyboard or read from
      > a file. The receiver prints directly to the screen.
      >
      > I plan to make up a better looking terminal. However if anybody
      > wishes to include my MT63 classes in his/her freeware software
      > I wouldn't mind this. The code should work under Windows or any other
      > platform which can supply sound sampled at 8000 Hz or different rate.
      > The C++ classes are easy to use, the modem needs no tuning
      > (it tell you however the frequency offset), so the interface
      > needs not to be sophisticated.
      >
      > Pawel
      >
      > ---
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      >
    • Douglas Braun & Nadia Papakonstantinou
      Cool! Where s the code? Doug Braun NA1DB (ex N1OWU)
      Message 2 of 3 , Nov 15, 1999
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        Cool! Where's the code?

        Doug Braun
        NA1DB (ex N1OWU)

        At 08:12 PM 11/10/99 +0100, you wrote:
        >From: "Paulus" <paulstra@...>
        >
        >
        >----- Oorspronkelijk bericht -----
        >Van: Pawel Jalocha <jalocha@...>
        >Aan: TAPR HF Special Interest Group <hfsig@...>
        >Verzonden: woensdag 10 november 1999 13:25
        >Onderwerp: [hfsig] New MT63 software
        >
        >
        > > Well, it's not really new, because the modulation/coding did not change.
        > > It is the platform which has changed, as I have written the MT63
        > > transmitter and receiver in C++ so it can run on LINUX !
        > > It runs on MSDOS too, but as there is no sound support
        > > you can only encode and decode audio files. It can still be usefull
        > > for simulations or playbacks of pre-recorded audio.
        > >
      • Coombe Down
        Doug, Johan has it - check with him. By the way, nino IZ8BLY is working on a Win 95 version and we might have a first cut of that to play with very soon. I ll
        Message 3 of 3 , Nov 16, 1999
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          Doug,

          Johan has it - check with him.

          By the way, nino IZ8BLY is working on a Win 95 version and we might have a
          first cut of that to
          play with very soon. I'll keep you posted.


          73,

          Murray
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