How do you know?

– Go to Settings → Radio, expand the rig control dropdown, and select your radio model. For users of DX Lab Suite Commander, select "Dx Lab Suite Commander" from the RTX dropdown

In the niche but passionate world of amateur radio digital modes, few topics generate as much forum chatter as specific software builds. If you have been searching for , you are likely looking for a specific, highly optimized version of the JTDX software (a popular variant of WSJT-X) used for FT8 and FT4 modes.

: For users seeking the last fully stable GA release, v2.2.159 remains the widely recommended baseline for most amateur radio setups. Key Features & Reported Issues in 2.2.160

Version 2.2.160 introduced refinements to the decoding engine and improved stability for modern operating systems.

: The primary hub for official binaries (currently featuring the stable v2.2.159 and various 2.2.160-RC versions). JTDX Improved (SourceForge)

While WSJT-X is the "official" standard known for its stability and simplicity, JTDX was developed by a community of DXers with a singular focus: , especially on crowded HF bands. The goal is to help operators make contact with rare or distant stations ("DX") that other software might miss. Over the years, JTDX has evolved into a "tuned-up" version of its predecessor, offering advanced filtering, more intuitive user interface options, and a more powerful auto-sequencing engine.