JTDX is a fork of WSJT-X, optimized primarily for and decoding speed . Version 2.2.160 RC8 is a release candidate, meaning it is feature-complete and undergoing final bug testing before stable release. It targets serious DXers, EME operators, and contesters who prioritize decoding the weakest signals over maximum Hamlib rig compatibility or polished UI.

The 2.2.160 release cycle, including RC8 (Release Candidate 8), focuses on refining the user experience and maintaining compatibility with evolving hardware and communication protocols.