Hi folks,
Further reading indicates that the QRP benefits of FreeDV appear to have been oversold. I now understand that FreeDV on HF is most effective when signals are solid copy. Those who have actively tried the system say weaker signals do not enable FreeDV to 'lock on', consequently nothing is heard.
So... if I gave you false hope that there was an effective hf qrp voice mode not far off, I apologise here and now. Sorry about that.