Fldigi is an application designed for digital amateur radio operation. The tool works with a conventional HF SSB transceiver and the computer's sound card as the main input and output for sound (radio). Another advantage of the platform is the large number of modes (DominoEX, MFSK16, PSK31, RTTY, etc.) it contains, which saves you time by not having to run another tool in parallel.
This platform will surely remind us of the 1980s and the early 1990s, when the Internet was not as popular as it is today. In those years, we needed a powerful audio system and an antenna (the higher the antenna, the greater the range) and in this way we could talk to people from different provinces or even communicate with people from neighboring countries. In those days, there were connection days, for example, Boy Scouts, volunteer firefighters, or astronomy enthusiasts had a day where everyone set up their radio equipment anywhere and chatted with colleagues about specific topics.
Today, with the Internet, all that magic has disappeared, but Fldigi puts it back at our disposal and with all the advantages of digital technology, such as ARQ file transfer, Amateur Multicast Protocol, flwrap - encapsulation file and modem for the K1EL Winkeyer series, among other options.
Fldigi is an excellent option for radio amateurs or for those people who want to resume this nice pastime. Fldigi is a free application that is available for Windows, Mac OS X, and Linux operating systems. The platform is developed in C++ and comes with most of the necessary drivers on all operating systems.
