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FreeDV

CMake · FreeDV.FreeDV

Open Source Amateur Digital Voice mode for HF radio.

FreeDV is a suite of digital voice modes for HF radio. Our flagship mode is the Radio Autoencoder (RADE). You can run RADE using a free GUI application for Windows, Linux and macOS that allows any SSB radio to be used for high quality digital voice. FreeDV technology is being developed by an international team of radio amateurs working together on Machine Learning, DSP, coding, design, user interface and testing. The project is managed by a 6 person Project Leadership Team (PLT). Current development is being generously funded by an ADRC grant and our Financial Sponsor is the Software Freedom Conservancy. All software is open source, released under the (a) GNU Lesser Public License version 2.1 (GUI and legacy FreeDV modes) and two-clause BSD license (RADE).

winget install --id FreeDV.FreeDV --exact --source winget

Latest 2.2.1

Release Notes

FreeDV 2.2.1 has been released, containing bugfixes for issues discovered since the release of 2.2.0 along with a change to ensure continued operation of the FlexRadio integration. These changes are outlined below:

  1. Bugfixes:
    • Fix UBSan/TSan errors from 2.2.0 build. (PR #1200, #1208)
    • Fix compile error when trying to use Hamlib 5.0-git. (PR #1202)
    • Fix bug causing PTT input to be initially ignored until pushing the PTT button. (PR #1203)
    • FlexRadio: Fix command format for UDP port. (PR #1205; thanks @amcdermond!)
    • Cache PTT response time to minimize first TX reporting issues. (PR #1207)
    • Hamlib: Add checking prior to retrieving minimum/maximum baud rates. (PR #1209)
    • Autosize columns in main window drop-down list. (PR #1213)
    • PulseAudio/pipewire: Use fixed wait time between processing cycles. (PR #1216)
    • Slow down waterfall display when waterfall is small (i.e. displayed with other plots). (PR #1216)
    • FlexRadio: Terminate on SIGHUP to avoid hangs on exit. (PR #1214)
  2. Build system:
    • macOS: Fix dylibbundler call for compilation. (PR #1204)
    • macOS: Add /Applications shortcut to generated DMG. (PR #1206)

Installer type: nullsoft

Architecture Scope Download SHA256
x64 — Download CF73280353CC136DB34D458D7C4981BFDBF82DF54EFAF2FE054A9B4AF765C26A

Details

Homepage
https://freedv.org/download/
License
LGPL-2.1
Publisher
CMake
Support
https://github.com/drowe67/freedv-gui/issues
Copyright
Copyright (C) 2026 FreeDV
Moniker
freedv

Older versions (12)

2.2.0
Architecture Scope Download SHA256
x64 — Download 4E4AC6F7332D448C415CBEEAF1EBE13CA32E21E2A488A7A36FECB4A55355F045
2.1.0
Architecture Scope Download SHA256
x64 — Download B4FC4BEA200F94758714AE645402CB27241E5B9A751880661C07EDF55E66CDD8
1.9.9.2
Architecture Scope Download SHA256
x86 — Download EE7895CB6C07E00F1729B8B88B16749526C1C761DCBBD59048E2A3AB29115F0B
x64 — Download D7F9B2A11248EA83C2E51C5525C7729B913DD0A430F68D1DB12A6EAFDF5B6995
1.9.9.1
Architecture Scope Download SHA256
x86 — Download 0EFAAC0B391EE609DC43BED537B4C5EBFEDE8F46EDEFF28042F5725C33C190C5
x64 — Download 4177C6013376D30F199323D1634F3AB79277B0A711231D4B14492C7FAAF53664
1.9.8
Architecture Scope Download SHA256
x86 — Download F627682BF101091C1E6590712B2940FC0722E9DB5B2A43092F83DC95BD2BA2D0
x64 — Download 28D6F7882231C40E55505102EF3F64D501F49A6F47D840CB77962401ED788DB1
1.9.7.2
Architecture Scope Download SHA256
x86 — Download F8A1DB9FF6508D4CDC14EEC348A2D674467FC1AF4A494EE10B66B982D68A374B
x64 — Download 19759665C9B002334A0B88880A5ECB0D24B5290A6309B76A67D2C9281083672B
1.9.7.1
Architecture Scope Download SHA256
x86 — Download 060A2CF664D01401C338804459D8ABF4AF042CE58E9D5D281055BCDA1A5B173E
x64 — Download B542DDFB5F691EFF8EB8EEB0912AD4D5A7F0D4BFD418E456C7DCFC1B5F6799BD
1.9.7
Architecture Scope Download SHA256
x86 — Download 0642DA3DBCB98D52C8A781A965B08D5D1E742C0C5BAEFDC57EA5FEBA280FCB1E
x64 — Download CC12B5D5261F71F9215197A06F137B8974F16A837D81BF3220D273172454D8DE
1.9.6
Architecture Scope Download SHA256
x86 — Download 9F44E72FC0C3DDB30EDFF764A201A4032F1A50F0F506E8DE9B8A9C5711F97F84
x64 — Download 60F613F89DE65EB0C54F921B763F1758528A6F6E4CAD9823EA8345D846DCCC11
1.9.5
Architecture Scope Download SHA256
x86 — Download 0C717B3FC3394295E38623FCFCB0F9B32C72B01EC1F6E760796D6F1E82FDC5AA
x64 — Download 3056C1CADBF9B6F4B8CE6B48635404565DC7DACB4220F90D3CF7E6290A24A9A0
1.9.4
Architecture Scope Download SHA256
x86 — Download 2145491BF55758F12A522450943B3ECA1D788207B526299BEBD6574E3E285C4C
x64 — Download A266CCCFDC708423BB3A5DE54903E4B4EBEE32BF05ACC13E9541CB873C961808
1.8.4
Architecture Scope Download SHA256
x86 — Download F14768BCEA61411A59D7DC36068A9EEE6BBE3736DA4B24CB86A567F0762E2F3A
x64 — Download 7E18C5BF90CEB3EC6D715B2E7420A9D97171B067F38E9EB562461B025E2C66F2