Utilities Windows
fldigi for Windows
Send and decode amateur-radio digital modes with fldigi, a free Windows sound-card modem supporting CW, PSK, RTTY, Olivia and other modes.
Version 4.2.13 · Direct publisher file
Link checked · Download guidance
What is fldigi?
fldigi turns sound-card audio into a digital-mode modem for amateur-radio work. It supports modes including CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia and Throb, giving radio operators one application for several types of on-air text communication. It also includes tools for calibrating a sound card against a time signal and making frequency measurements.
The computer is only part of the station: fldigi uses sound-card audio and works with an external radio transceiver. Audio routing and radio-control connections need configuring for the equipment in use; installing the program does not replace that hardware or setup.
This entry links to the publisher-hosted fldigi 4.2.13 Windows EXE installer. Softonic still describes an older 4.1.06 release, and its gallery screenshots illustrate an earlier interface rather than establishing the appearance of 4.2.13. Minimum supported Windows version and processor architecture were not confirmed for the selected package.
What it offers
- Work with CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia and Throb digital modes.
- Use the computer sound card for audio-frequency signal input and output.
- Calibrate a sound card against a time signal.
- Perform frequency measurement tests.
Good to know
- On-air operation requires an external radio transceiver and correctly configured audio and radio-control connections.
- Minimum Windows version and processor architecture were not confirmed for the linked 4.2.13 installer.
Product images
Sources
References used for this listing. Retrieval dates do not indicate hands-on testing.
- fldigi download | SourceForge.net ↗Retrieved
- fldigi - Browse /fldigi at SourceForge.net ↗Retrieved
- fldigi - Download ↗Retrieved
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