HF Multi-Band End-Fed Half-Wave (EFHW) Harmonic Alignment & FT240-43 Toroid Core-Loss Solver

Deterministic Fair-Rite complex permeability mu'(f), mu''(f) parallel shunt core loss + NEC-like end-effect wire velocity factor & loading-coil harmonic shift engine (.json, .csv) built for Fair-Rite / Amidon, Icom, Yaesu, Elecraft — zero-upload ephemeral Wasm RAM execution.

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