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FLDigi

FLDigi

FLDigi is a popular free and open source software program used for digital modes communications. It allows ham radio operators and shortwave listeners to decode and transmit several digital communication modes such as RTTY, CW, PSK, and more.
Radio & Communications Ham Radio Software
ham-radio digital-modes rtty cw psk
FLDigi screenshot
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FLDigi: Digital Modes Communications

A free and open source software for ham radio operators and shortwave listeners to decode and transmit digital modes such as RTTY, CW, PSK, and more.

What is FLDigi?

FLDigi is a popular free and open source software program used for digital modes communications. It is developed and maintained by a group of amateur radio operators and programmers.

FLDigi allows ham radio operators and shortwave listeners to decode and transmit several commonly used digital communication modes such as RTTY, CW, PSK, MFSK, THOR, DominoEX, Olivia, Contestia, and more. It supports all common serial ports as well as USB and integrated sound card interfaces.

Some of the key features of FLDigi include:

  • Decoding and transmission of most popular digital modes
  • Flexible interfacing with radios via sound cards and serial ports
  • Macro system to automate sending of messages, emails, spots, etc
  • Supports digital mode contests with advanced features
  • Logbook program to log all digital mode QSOs
  • Open source program available for Windows, Mac, and Linux

Overall, FLDigi is considered one of the most popular free software programs used in the ham radio community for digital communications using computer sound cards and radios.

FLDigi Features

Features

  1. Supports many digital modes like RTTY, CW, PSK, MFSK, Throb, MT63, Hell, Contestia, Olivia, DominoEX, QPSK31, BPSK31, Q15X25, and more
  2. Built-in macros and memories
  3. Waterfall display
  4. Rig control
  5. Logbook
  6. Supports direct keyboard entry for CW and RTTY
  7. Built-in digital modems for decoding and transmitting data
  8. Supports sound card and external modems
  9. Multi-channel reception and transmission
  10. Automatic Doppler tuning for satellites
  11. Macro recording and playback
  12. Built-in logging and awards tracking

Pricing

  • Free
  • Open Source

Pros

Free and open source

Supports many digital modes

Active development and user community

Cross-platform - works on Windows, Mac, and Linux

Customizable interface

Good for contesting and DXing

Cons

Steep learning curve

Can be resource intensive

Limited support for newer digital modes

Interface can be confusing for new users

Official Links

Official Website
https://www.w1hkj.com/FldigiHelp-3.23/index.html

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