Re: [amsat-bb] PC Soundcard - a good P3D 400 Bd TLM receive modem

["laura halliday" <marsgal42@xxxxxxxxxxx>]

Hamish Moffatt <hamish@cloud.net.au> wrote:

>So, is a good technical description of the exact modulation
>format available? The assembler source for the DSP-12 is
>a start, but not a real substitute for documentation.

Reverse-engineering DSP code is not something one does
lightly. :-)

Fortunately, the 400 baud PSK beacon uses exactly the same
modulation as OSCAR-13 did. Allowing the spacecraft diff-
erences, the data formats will be similar too.

Laura Halliday VE7LDH     "Que les nuages soient notre
Grid: CN89mg               pied a terre..."
                                   - Hospital/Shafte

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