EnergyGuy LLC
Amateur Radio • Electronics • Engineering
Main Navigation
Home
End-Fed Quarter-Wave Documents
End-Fed Quarter-Wave Docs Index
Theory
Design Calculations
EZNEC / NEC Modeling
Winding Tables
Element Lengths
Feed Point Locations
Matching Methods
Construction Methods
Aiming Methods
Deployment Techniques
Tuning Methods
Orientation Techniques
Assembly Procedures
Tuning Methods
Date: 2026-01-12
Measure SWR at the feed point with a VNA.
Trim the radiator to raise resonance.
Add length or a loading coil to lower resonance.
Adjust matching network for lowest SWR.