Adds a general-purpose SSTV decoder alongside the existing ISS SSTV mode,
supporting USB/LSB/FM modulation on common amateur radio HF/VHF/UHF
frequencies (14.230 MHz USB, 3.845 MHz LSB, etc.) with auto-detection
of modulation from preset frequency table.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The sweep loop's WiFi/BT/RF scan processing had unprotected
timeline_manager.add_observation() calls that could crash an entire
scan iteration, silently preventing all device events from reaching
the frontend. Additionally, scan interval timestamps were only updated
at the end of processing, causing tight retry loops on persistent errors.
- Wrap timeline observation calls in try/except for all three protocols
- Move last_*_scan timestamp updates immediately after scan completes
- Add per-device try/except so one bad device doesn't block others
- Emit sweep_progress after WiFi scan for real-time status visibility
- Log warning when WiFi scan returns 0 networks for easier diagnosis
- Add known_device and score_modifier fields to correlation engine
- Add TSCM scheduling, cases, known devices, and advanced WiFi indicators
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add DopplerTracker class using skyfield for satellite tracking
- Calculate and apply Doppler shift correction (up to ±3.5 kHz at 145.800 MHz)
- Background thread monitors shift and retunes rtl_fm when >500 Hz drift
- New /sstv/doppler endpoint for real-time Doppler info
- Start endpoint accepts latitude/longitude for automatic tracking
Also:
- Add slowrx installation to setup.sh (source build for macOS, apt for Debian)
- Sync observer location to dashboard-specific localStorage keys
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add slow-scan television decoder for receiving images from ISS.
Includes new Space dropdown in navigation grouping Satellite and SSTV modes.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
