Continue debugging and testing features#35
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**Summary:** Corrected absorption coefficient from incorrect 67.72 to correct 677.2 based on VOACAP FORTRAN source (REGMOD.FOR line 57: AC = 677.2 * ACAV). **Impact:** - Daytime E-layer SNR errors reduced from +97-145 dB to +38-59 dB - Absorption now ~59 dB/hop (was ~6 dB/hop, should be ~100 dB/hop) - Still investigating remaining 30-60 dB discrepancy **Test Results:** - test_mode_selection.py: 7.20 MHz daytime improved from +144dB to +38dB error - test_voacap_reference.py: 6/18 tests passing (improved from unusable) - Nighttime predictions: 2-7 dB errors (acceptable) **Remaining Issues:** - Daytime E-layer still 30-60 dB too optimistic - Mode selection errors (2F2 instead of 2E at 9.70 MHz) - Low frequency anomaly (6.10 MHz: 130 dB error) See ABSORPTION_BUG_ANALYSIS.md for detailed analysis. References #validation #absorption #fortran-port
Proposes hybrid approach: - Keep technical docs in repo (version-controlled) - Create user-facing wiki for guides, tutorials, FAQ - Convert large PDFs to markdown wiki pages - Link between wiki and repo docs See WIKI_MIGRATION_RECOMMENDATION.md for full analysis.
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