Engineering Tools

Calculators that take electrical parameters and return a value or a single component's geometry. Exact tools are closed math; approximating tools declare their method and an honest accuracy note.

01 Exact

Wavelength λ = c / f (× VF for physical)Velocity Factor VF = v / c Resonant Frequency f = 1 / (2π√LC)Balun Ratio n = √(Z_out / Z_in)SWR SWR = (1 + |Γ|) / (1 − |Γ|)

02 Approximating · declares method + accuracy note

Feed Line Loss published-design · matched loss + SWR-added loss (dB)Bandwidth closed-form · BW = f / Q Loading Coil closed-form · X = −Zc·cot(βℓ) + Nagaoka geometry