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title, date, updated, author, categories, tags, copyright
| title | date | updated | author | categories | tags | copyright | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Half-Wave Dipole Antenna: Quick Reference | 2026-03-22 | 2026-03-22 |
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(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 |