Dipole Length Optimizer

Replicates the original SWR-trim math: wavelength = 300/f, quarter-wave, then x0.93.

Accepted range: 0.001 to 10000.000
Decimal values only. Example: 14.200
Metric Current resonance Target resonance
Wavelength
Quarter-wave
Adjusted element length

For dipoles: apply trim value per leg. For verticals: apply to the radiator. Always trim incrementally and re-check SWR.