Advanced FT8/FT4 DX Decoder 1.0.18

First public release for Apple Silicon macOS and the matching SDR++Brown 1.2.1 August 4, 2026 build.

Download the macos-arm64 ZIP, extract it, quit Brown, then run python3 scripts/install.py --build bin from the extracted folder. Python 3 is required. The installer backs up the profile and preserves Brown's signed application.

Includes the DX map, reception table, persistent CSV logging, help/manual, direct optional GridTracker UDP, dark-blue dotted exchange arcs and optional saved-history statistics. History statistics start off and calculate in the background. Station first heard sorts newest first by default; Msg age and first-heard values align right.

Built with a macOS 15 minimum; tested on macOS 26. Other host builds may require recompilation against their matching ABI. Binaries are ad-hoc signed plugin/helper files, not a notarized standalone app.

Validation: all five native tests, all five AddressSanitizer/UndefinedBehaviorSanitizer tests, all five release tests, synthetic FT8/FT4 decoding and installed release decoding on live RF. CSV escaping/recovery, GridTracker packets, session reset and history-stat switching are covered. The installer restores the helper's executable permission even when extraction removes it.

Assets include the binary package, complete staged corresponding source with upstream license notices, and SHA-256 checksums. Creator: ReLLL. Installation | User guide.