Linux · Internet & Browsers
Fldigi
Amateur Radio Sound Card Communications
by dave-w1hkj, mdblack98, sb42
Official site: flathub.org
About Fldigi
Fldigi is a modem program for most of the digital modes
used by radio amateurs today: CW, PSK, MFSK, RTTY, Hell,
DominoEX, Olivia, and Throb are all supported.
It can help calibrate a sound card to a time signal and
do frequency measurement tests.
How to install Fldigi
- Click Download — the developer's official website opens in a new tab.
- Download the latest version there and run it. Choose Custom/Advanced where offered, and skip any bundled extras.
- Prefer the command line? With Flatpak you can install and update it with: flatpak install flathub com.w1hkj.fldigi
- Open Fldigi once it finishes installing.
Frequently asked questions
Is Fldigi free to download?
Yes. The Download button sends you to flathub.org, the developer's official site, where Fldigi is available to download. Flatnic doesn't host or modify any files.
How do I install Fldigi from the command line?
With Flatpak, run: flatpak install flathub com.w1hkj.fldigi. This installs it from the official source and keeps it updated.
Is Fldigi safe?
Fldigi downloads directly from the developer. As always, scan the installer with your antivirus and choose Custom setup to skip any bundled extras.
