---
title: "Half-Wave Dipole Antenna: Quick Reference"
date: 2026-03-22
updated: 2026-03-22
author: [The Tech Prepper]
categories: [radio, antennas]
tags: [dipole, hf, antenna, reference]
copyright: "(C) 2026 The Tech Prepper, LLC"
---

The half-wave dipole is a simple and effective HF antenna for field
deployments.


## Formula

**Total Length (feet):**

468 / Frequency (MHz)

**Each Leg:**

234 / Frequency (MHz)


## Common Band Lengths (U.S. General Center Cut)

The following are example center frequencies. In most cases, they
favor the digital portion over the voice portion of the band.

| Band | Frequency (MHz) | Total Length (ft) | Each Side (ft) |
|------|-----------------|-------------------|----------------|
| 80m  | 3.5625          | 131.4             | 65.7           |
| 75m  | 3.900           | 120.0             | 60.0           |
| 60m  | 5.359           | 87.3              | 43.7           |
| 40m  | 7.100           | 65.9              | 33.0           |
| 30m  | 10.125          | 46.2              | 23.1           |
| 20m  | 14.100          | 33.2              | 16.6           |
| 17m  | 18.118          | 25.8              | 12.9           |
| 15m  | 21.100          | 22.2              | 11.1           |
| 12m  | 24.910          | 18.8              | 9.4            |
| 10m  | 28.150          | 16.6              | 8.3            |