Utilizing the CALL3.TXT or ALLCALL7.TXT database, JTDX can "guess" or predict callsigns in extreme noise to help complete contacts. Understanding the "2.2.160" and "2021" Context
: You can find the latest stable builds (v2.2.159) for Windows (32-bit and 64-bit), Linux, and macOS on the JTDX SourceForge page. Key Features of v2.2.159 : Updated Hamlib libraries for improved rig control. Improved decoding algorithms for FT8 and FT4. Fixes for "Fox" mode and various GUI refinements. The "JTDX Improved" Project jtdx 22160 download 2021