The FDMDV modem and Codec 2 Speech codec used in FreeDV are also open source.įor more information and a few videos showing setup and using the FreeDV digital voice software and links to download the latest version of the software, Click HERE FreeDV is open source software, released under the GNU Public License version 2.1. On receive, the signal is received by the SSB radio, then demodulated and decoded by FreeDV.įreeDV was built by an international team of Radio Amateurs working together on coding, design, user interface and testing. 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. QSSTV is compatible with Qt 4.8, 5.1 and 5.2.įor specific instructions on installation on different distributions: have a look at the FAQ html įor more info on QSSTV and latest version Click HEREįreeDV is a GUI application for Windows and Linux that allows any SSB radio to be used for low bit rate digital voice. The latest versions of QSSTV is always available at Download the latest tar file to a local directory. This is a beta version, and you can expect to find updates and bug fixes on a (not so) regular basis. QSSTV is compatible with most of MmSSTV and EasyPal versions. Analogue SSTV and Digital DRM under Linux
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