FreeDV Activity Day
/FreeDV is a HF digital voice mode that has been designed to provide the best audio quality over the various conditions encountered on HF.
It is based on the open-source modems and codecs developed by David Rowe VK5DGR, and is under continuous development with modes and enhancements being added on a regular basis by amateurs worldwide and is available for Linux, MacOS and Windows operating systems.
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