Broadcast 12G/6G/3G-SDI Coax Reach, Nyquist Skin-Effect Loss & BNC-Barrel Budgeter

Deterministic Sqrt(f) copper skin-effect + dielectric loss interpolation at 0.75/1.5/3.0/6.0 GHz Nyquist against SMPTE ST 292/424/2082 equalizer budgets engine (.pdf, .csv, .json) built for Blackmagic Design, Belden, Canare, AJA Video — zero-upload ephemeral Wasm RAM execution.

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