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This analysis compares HF propagation characteristics between regions north and south of the 45°N latitude line (GN55-IN25), from the perspective of VE1ATM station (44.37°N). Key findings: - South of 45°N shows dramatic advantages on high bands (12m/10m) - 12m: +26% reliability, +17.9 dB SNR - 10m: +22% reliability, +35.9 dB SNR - North of 45°N performs better on mid-bands (17m/15m) - 17m: +17.7 dB SNR advantage - 15m: +5.5% reliability advantage - Low bands (40m/30m) relatively neutral - 30m shows nearly identical performance Files added: - ANALYSIS_GN55_IN25_COMPARISON.md: Comprehensive report with findings, recommendations, and operating strategies - analysis_gn55_in25_comparison.py: Python script using DVOACAP prediction engine to calculate propagation to 12 European grids - gn55_in25_comparison_results.json: Full detailed prediction data (168 predictions per region across 4 time points and 7 bands) Analysis demonstrates that the 45°N parallel represents a real propagation boundary with significant band-dependent differences.
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This analysis compares HF propagation characteristics between regions north and south of the 45°N latitude line (GN55-IN25), from the perspective of VE1ATM station (44.37°N).
Key findings:
Files added:
Analysis demonstrates that the 45°N parallel represents a real propagation boundary with significant band-dependent differences.