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In 2012 FreeDV was coded from scratch by David Witten (GUI, architecture) and David Rowe (Codec 2, modem implementation, integration).
The FreeDV design and user interface is based on FDMDV, which was developed by Francesco Lanza, HB9TLK. Francesco received advice on modem design from Peter Martinez G3PLX, who has also advised David on the FDMDV modem used in FreeDV.
Mel Whitten, K0PFX has contributed greatly to the design, testing and promotion of several Digital Voice systems, including FDMDV. This practical experience has led to the current design – a fast sync, no FEC, low latency system that gives a “SSB” type feel for operators. Mel and a team of alpha testers (Gerry, N4DVR; Jim, K3DCC; Rick, WA6NUT; Tony, K2MO) provided feedback on the usability and design of FreeDV.
Bruce Perens has been a thought leader on open-source, patent-free voice codecs for Amateur Radio. He has inspired, promoted and encouraged the development of Codec 2 and FreeDV.
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.
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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