FreeDV: Open Source Amateur Digital Voice – Where Amateur Radio Is Driving The State of the Art
FreeDV is a Digital Voice mode for HF radio. You can run FreeDV using a free GUI application for Windows, Linux and OSX that allows any SSB radio to be used for low bit rate digital voice.
Alternatively you can buy a SM1000 FreeDV adaptor that allows you to run FreeDV (1600 and 700D modes) on any HF radio without a PC or sound card. If you are a hardware or software developer, you can integrate FreeDV into your project using the LGPL licensed FreeDV API.
FreeDV is being developed by an international team of radio amateurs working together on coding, design, user interface and testing. FreeDV is open source software, released under the GNU Lesser Public License version 2.1. The modems and Codec 2 speech codec used in FreeDV are also open source… Learn more at freedv.org