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.

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Categories

Ham Radio

License

GNU General Public License version 3.0 (GPLv3)

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User Reviews

  • It works well. I tried for two days to connect this to the IC-7300.
  • I'm running FLDIGI on Ubuntu 22.04.03 on both Dell i7 Latitude and on Raspberry Pi 400 and on stupid Windows 11. The Linux machines are definitely better for audio. (1) Windows does not automatically give me audio. I have to keep screwing with it then eventually i get audio after about a half hour. All sliders are maxed and the only audio I can hear with the "monitor" function of my 7300 is very faint and no ALC. A real mystery, Happens every day I try to use it. Until I happen to do something (???) and then I get audio. (2) Raspberry Pi was running it very well. Then, after weeks of running well, it started taking 1-1.5 seconds to move the mouse and the water fall was slow. No issue with FLRIG. It runs fine with out FLDIGI running. As soon as FLDIGI is started, the Raspberry Pi slows to a craw. Unusable. Then, out of the blue it ran great one night on Olivia net. Now its back to a craw. Tried removing FLDIGI and re-installing. In both cases I installed from repository using apt and apt-get. Current version is 4.1.20 I down loaded the latest version from sourceforge. However, the tar scares the crap out of me. I don't want to build the task. a deb would be great.
  • Have been trying to install and run Fldigi 2.4.0.0. It wants to start, then shuts down. No error code or message. I am running it on a Win 8 computer. I first downloaded and ran Fldigi about 3 years ago, no problem. I do not know if this is being caused by a Win update of some sort, or if it is the Fldigi. Bottom line: can not get it to run. Help! Thanks, John/KA5SWC
  • No installs downloaded for windows 11 64 bit September 2023 will not install period. Compatibility or not. Why the authors continue to use EXE for install and not msi that microsoft does not like is beyond me. Edge for last few years always flags fldigi.exe and you have to fight that and still not get installed. Now i see less and less digital signals being used and it may be contributed to this. This program was king but until installs get worked out im done with it. Other options for users get an older computer. Windows 10 is done in 2 years from now. Then we all enjoy windows 11 versions not installing. Fun while it lasted.
  • Love this project! The current version (14.1.16) will not work Mac OS X Big Sur (11.0.1), but the beta version (4.1.16.02) seems to work ok. Thanks to the team for addressing this issue so quickly!
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Additional Project Details

Operating Systems

Linux, BSD, Mac, Windows

Languages

French, Polish, Italian, German, Spanish

Intended Audience

End Users/Desktop

User Interface

X Window System (X11), Win32 (MS Windows), Cocoa (MacOS X), FLTK

Programming Language

C++, C

Related Categories

C++ Ham Radio Software, C Ham Radio Software

Registered

2011-09-30