FreeDV on Mac OS

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As some of you may know FreeDV is a developing software application that allows any SSB radio to be used for low bit rate digital voice.

To quote the FreeDV site “Speech is compressed down to 1400 bit/s then modulated onto a 1100 Hz wide QPSK signal which is sent to the Mic input of a SSB radio. On receive, the signal is received by the SSB radio, then demodulated and decoded by FreeDV.”

A Mac OS version of the software has been bundled by Mark Jessop and can be downloaded from