Decodium v3.0 FT2 Raptor - Build 2603010555

Decodium v3.0 FT2 "Raptor" — Build 2603010555

New Features

Auto CQ Caller Queue Display

• Right panel shows live queue with "Caller Queue (N)" title and numbered station list
• Queued stations displayed as #1 CALLSIGN freq Hz with green background
• Empty queue shows helper text "(empty - double-click to add stations)"
• Panel automatically restores to "Rx Frequency" when Auto CQ is deactivated

Fix: Double-click enqueue during CALLING state

• Double-click now correctly enqueues stations even when in CQ/CALLING state (was blocked by > CALLING condition)
• First queued station is auto-processed immediately if no QSO is active
• Multiple rapid clicks properly queue all stations; first is served right away

FT2 Multi-Period Averaging (+4dB) (from build 2603010503)

• EMA soft averaging over 2-4 periods for improved decode sensitivity
• Averaged decode attempt when single-period decode fails
• Expected gain: +3-5 dB on weak signals with stable DT

Downloads

File	Architecture	Size
Decodium_3.0_2603010555_FT2_x64_Setup.exe	Windows x64	55 MB
Decodium_3.0_2603010555_FT2_x86_Setup.exe	Windows x86	53 MB

All executables and installers are SHA256 code-signed with RFC3161 DigiCert timestamp.

Full Changelog

Build 2603010555 (2026-03-01) — This Release

• Add Auto CQ Caller Queue live display in right panel with numbered station list
• Fix double-click enqueue: now works during CALLING state
• Auto-process first queued station immediately when in CALLING state
• Panel restores to "Rx Frequency" when Auto CQ is deactivated
• Update About dialog and program title to build 2603010555

Build 2603010503 (2026-03-01)

• FT2 multi-period soft averaging (EMA): +3-5 dB gain over 2-4 periods
• Module-level bitmetrics accumulation buffer in ft2_decode.f90
• Averaged decode attempt when single-period fails (navg >= 2)
• Add SignPath Foundation code signing workflow (GitHub Actions)

Build 2602281900 (2026-02-28)

• Double-click on callsign during active Auto CQ QSO enqueues instead of interrupting
• New "No B4" checkbox filters out stations already worked on current band
• Restore all mode actions (FT8, FT4, JT65, JT9, Q65, MSK144, etc.) in Mode menu

Build 2602281659 (2026-02-28)

• B4 Strikethrough: stations already worked on band shown with strikethrough text
• Auto CQ Caller Queue: FIFO queue (max 20) for callers during active QSO
• TX Bracket Waterfall: red [ ] brackets drawn at TX slot position
• Auto CTY.DAT: auto-download cty.dat at startup if missing or older than 30 days

Build 2602270848 (2026-02-27)

• Restore DT display (Decode Timing panel), keep soundcard drift removed

Build 2602270204 (2026-02-27)

• Remove DT feedback loop (display-only, never applied to Detector)
• Rename wsjtx → decodium across entire project

Build 2602261706 (2026-02-26)

• Add ChronoGPS to installer and menu with dedicated icon
• Integrate ChronoGPS panel into TimeSyncPanel as two-column layout

Build 2602261018 (2026-02-26)

• Re-enable DT feedback for TimeSyncPanel convergence display (no Detector injection)
• Tune FT2 decoder: syncmin 0.90, ndeep/maxosd=3, SNR floor -21 dB
• Replace wsjtx.ico with decodium.ico for proper branding

Build 2602260045 (2026-02-26)

• Restore Detector to stock behavior (NTP/DT/drift = display only)
• Fix DT feedback oscillation: remove predictive correction, reduce EMA factors
• FT2-exclusive mode with Raptor branding, ft2logo, Raptor.pal palette

Build 2402261000 (2024-02-26) — Initial Release

• Rebrand WSJT-X to Decodium v3.0 FT2 (IU8LMC)
• Add FT2 digital mode with new Fortran decoder sources
• Add NTP precision client (25+ servers, RTT filtering, IQR, EMA)
• Soundcard drift detection, audio underrun recovery, OmniRig auto-launch
• Time Synchronization panel (Logger32-style), decoder watchdog
• CI workflows (Linux, macOS, Windows)

How to test

1. Install and launch Decodium
2. Activate Auto CQ button
3. Right panel shows "Caller Queue (0)" with empty message
4. Double-click a decoded station → appears as #1, QSO starts automatically
5. During QSO, double-click more stations → they queue as #2, #3, etc.
6. When QSO ends, next station is auto-processed from queue
7. Deactivate Auto CQ → panel returns to "Rx Frequency"

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73 de IU8LMC