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174 lines
6.2 KiB
174 lines
6.2 KiB
# Changelog
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All notable changes to OpenHamClock will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [Unreleased]
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### Planned
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- SOTA API integration
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- WebSocket DX cluster connection
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- Azimuthal equidistant projection option
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## [3.6.0] - 2026-01-31
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### Added
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- **Real-Time Ionosonde Data Integration** - Enhanced propagation predictions using actual ionospheric measurements
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- Fetches real-time foF2, MUF(3000), hmF2 data from KC2G/GIRO ionosonde network (~100 stations worldwide)
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- Inverse distance weighted interpolation for path midpoint ionospheric parameters
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- 10-minute data cache with automatic refresh
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- New `/api/ionosonde` endpoint to access raw station data
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### Changed
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- **ITU-R P.533-based MUF Calculation** - More accurate Maximum Usable Frequency estimation
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- Uses real foF2 and M(3000)F2 values when available
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- Distance-scaled MUF calculation for varying path lengths
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- Fallback to solar index estimation when ionosonde data unavailable
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- **Improved LUF Calculation** - Better Lowest Usable Frequency (D-layer absorption) model
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- Accounts for solar zenith angle, solar flux, and geomagnetic activity
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- Day/night variation with proper diurnal profile
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- **Enhanced Reliability Algorithm** - ITU-R P.533 inspired reliability calculations
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- Optimum Working Frequency (OWF) centered predictions
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- Multi-hop path loss consideration
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- Polar path and auroral absorption penalties
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- Low-band nighttime enhancement
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### UI Improvements
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- Propagation panel shows MUF and LUF values in MHz
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- Data source indicator (📡 ionosonde name vs ⚡ estimated)
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- Green dot indicator when using real ionosonde data
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- foF2 value displayed when available (replaces SSN in bar view)
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- Distance now shown in km (not Kkm)
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### Technical
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- New `fetchIonosondeData()` function with caching
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- `interpolateFoF2()` for spatial interpolation of ionospheric parameters
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- `calculateMUF()` and `calculateLUF()` helper functions
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- `calculateEnhancedReliability()` with proper diurnal scaling
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## [3.3.0] - 2026-01-30
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### Added
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- **Contest Calendar** - Shows upcoming and active ham radio contests
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- Integrates with WA7BNM Contest Calendar API
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- Fallback calculation for major recurring contests (CQ WW, ARRL, etc.)
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- Weekly mini-contests (CWT, SST, NCCC Sprint)
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- Active contest highlighting with blinking indicator
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- **Classic Layout** - New layout option inspired by original HamClock
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- Side panels for DE/DX info, DX cluster, contests
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- Large centered map
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- Compact data-dense design
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- **Theme System** - Three visual themes
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- 🌙 Dark (default) - Modern dark theme with amber/cyan accents
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- ☀️ Light - Bright theme for daytime use
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- 📟 Legacy - Classic green-on-black CRT style
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- **Quick Stats Panel** - Overview of active contests, POTA activators, DX spots
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- **4-column modern layout** - Improved data organization
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- **Settings persistence** - Theme and layout saved to localStorage
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### Changed
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- Modern layout now uses 4-column grid for better information density
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- Improved DX cluster API with multiple fallback sources
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- Settings panel now includes theme and layout selection
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## [3.2.0] - 2026-01-30
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### Added
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- Theme support (dark, light, legacy)
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- Layout selection in settings
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- Real-time theme preview in settings
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## [3.1.0] - 2026-01-30
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### Added
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- User settings panel with callsign and location configuration
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- Grid square entry with automatic lat/lon conversion
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- Browser geolocation support ("Use My Current Location")
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- Settings saved to localStorage
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### Fixed
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- DX cluster now uses server proxy only (no CORS errors)
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- Improved DX cluster API reliability with multiple sources
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## [3.0.0] - 2026-01-30
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### Added
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- **Real map tiles** via Leaflet.js - no more approximated shapes!
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- **8 map styles**: Dark, Satellite, Terrain, Streets, Topo, Ocean, NatGeo, Gray
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- **Interactive map** - click anywhere to set DX location
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- **Day/night terminator** using Leaflet.Terminator plugin
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- **Great circle path** visualization between DE and DX
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- **POTA activators** displayed on map with callsigns
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- **Express server** with API proxy for CORS-free data fetching
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- **Electron desktop app** support for Windows, macOS, Linux
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- **Docker support** with multi-stage build
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- **Railway deployment** configuration
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- **Raspberry Pi setup script** with kiosk mode option
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- **Cross-platform install scripts** (Linux, macOS, Windows)
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- **GitHub Actions CI/CD** pipeline
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### Changed
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- Complete rewrite of map rendering using Leaflet.js
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- Improved responsive layout for different screen sizes
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- Better error handling for API failures
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- Cleaner separation of frontend and backend
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### Fixed
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- CORS issues with external APIs now handled by server proxy
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- Map projection accuracy improved
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## [2.0.0] - 2024-01-29
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### Added
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- Live API integrations for NOAA space weather
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- POTA API integration for activator spots
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- Band conditions from HamQSL (XML parsing)
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- DX cluster spot display
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- Realistic continent shapes (SVG paths)
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- Great circle path calculations
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- Interactive map (click to set DX)
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### Changed
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- Improved space weather display with color coding
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- Better visual hierarchy in panels
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## [1.0.0] - 2024-01-29
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### Added
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- Initial release
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- World map with day/night terminator
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- UTC and local time display
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- DE/DX location panels with grid squares
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- Short path / Long path bearing calculations
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- Distance calculations
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- Sunrise/sunset calculations
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- Space weather panel (mock data)
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- Band conditions panel
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- DX cluster panel (mock data)
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- POTA activity panel (mock data)
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- Responsive grid layout
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- Dark theme with amber/green accents
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### Acknowledgments
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- Created in memory of Elwood Downey, WB0OEW
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- Inspired by the original HamClock
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---
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## Version History Summary
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| Version | Date | Highlights |
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|---------|------|------------|
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| 3.3.0 | 2026-01-30 | Contest calendar, classic layout, themes |
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| 3.2.0 | 2026-01-30 | Theme system (dark/light/legacy) |
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| 3.1.0 | 2026-01-30 | User settings, DX cluster fixes |
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| 3.0.0 | 2026-01-30 | Real maps, Electron, Docker, Railway |
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| 2.0.0 | 2024-01-29 | Live APIs, improved map |
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| 1.0.0 | 2024-01-29 | Initial release |
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---
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*73 de OpenHamClock contributors*
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