No. Calculator results are starting dimensions. Install the antenna, measure it in its real environment, and trim in small steps when tuning is practical.
Antenna Designer
Choose an antenna type to calculate starting dimensions for your frequency or amateur radio band.
Choose an antenna
Dipole
A straightforward single-band HF wire antenna with simple dimensions.
OCF Dipole
A horizontal HF wire antenna designed to cover multiple bands.
EFHW
A multiband HF wire antenna fed from one end.
Random Wire
A flexible multiband wire for setups where a tuner is part of the plan.
Quarter-Wave Vertical
A vertical choice when a small footprint matters across HF or VHF.
Yagi
A directional antenna for focused coverage and added gain.
Ground Plane
An omnidirectional vertical for VHF/UHF and compact fixed installations.
Which antenna should I choose?
| Need | Consider |
|---|---|
| Simple single-band antenna | Dipole |
| Multiband horizontal wire | OCF Dipole |
| End-fed installation | EFHW |
| Flexible multiband wire + tuner | Random Wire |
| Small horizontal footprint | Quarter-Wave Vertical |
| VHF/UHF omnidirectional antenna | Ground Plane |
| Directional gain | Yagi |
Before You Cut
Calculator results are starting dimensions, not guaranteed final dimensions. Resonance changes with conductor size, insulation, mounting height, nearby objects, feed method, and installation geometry. Cut slightly long when practical, install the antenna, measure it, and trim in small steps.
Antenna Designer FAQ
Use the quick decision aid above: start with the operating goal or site constraint, then open the calculator for the antenna that fits it best.
Use Wavelength Calculator when you only need a quick fraction of wavelength or a basic dimension. Use this page when you are choosing among antenna types.