FreeDV: OPEN SOURCE AMATEUR DIGITAL VOICE

Key Features:

  • Cross-platform: runs on Linux, Windows, and OSX.
  • Open source, patent-free Codec and Modem that anyone can experiment with and modify
  • Waterfall, spectrum, scatter, and audio oscilloscope displays.
  • Adjustable squelch
  • Fast/slow SNR estimation
  • Microphone and Speaker signal audio Equaliser
  • Control of Transmitter PTT via RS232 levels
  • Works with one (receive only) or two (transmit and receive) sound cards, for example, a built-in sound card and USB headphones.
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FreeDV is a high-quality digital voice mode for clear communication over HF radio frequencies. It’s easy to use and accessible to all, eliminating the need for complex equipment or specialized training. FreeDV delivers clear voice with minimal delays under weak signal conditions, perfect for emergency responders, humanitarian aid efforts, and remote workers. It’s also compatible with different radios and interfaces, making it adaptable for any situation.

Credits and Contact Information

FreeDV is being maintained and extended by Mooneer Salem K6AQ and David Rowe, VK5DGR. Richard Shaw KF5OIM maintains the Cmake build system and Fedora packaging. Walter, K5WH is leading Windows testing in the USA. Debian packaging thanks to A. Maitland Bottoms (AA4HS) and the Debian Hamradio Maintainers.

As development continues, many people are helping whom we have not credited on this website, but we appreciate all of their work.

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