Description

PSK31 is a new digital mode:

based on the RTTY mode of operation,
useful for live keyboard to keyboard QSO
that works at 31.25 bauds,
that uses varicode caracter coding what gives 50wpm,
easy to use and monitor,
that give very good copy under low Eb/No numbers and is thus suitable for QRP,
that instead of using FSK or on/off keying uses BPSK or QPSK with a Viterbi decoder,
that is available for free for many platforms, including Windows (c) with SoundBlaster type Soundcard,
and uses advanced DSP and narrow band (31 Hz!!) techniques.

PSK31 is not a digital mode that:

will make Pactor, Pactor-2, Clover-II or Gtor obsolete,
offers error free links,
can be used to transmit files or acces mailboxes.

PSK/QPSK Tx / Rx program for Windows 3.1, Windows 95/98, Windows NT with Soundblaster.

Requires at least a 486/33, perhaps less with slower rates.

V1.06 - Now with more help, bigger waterfall display for easier tunning and overload indicator. It also allows adjustment of the sample-rate and can now handle off-frequency soundcards. Also allows file-send and Large Fonts:

Download v1.05 p31sbw105.zip (169k)

Download v1.06 p31sbw106.zip (177k)

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