HF Vertical Antenna · 160–6M · No Radials · Made in USA
The 28' DXV — The Flagship Vertical. Every dB on the Table.
The DXV28 is the pinnacle of the Greyline vertical lineup — maximum aperture, maximum low-angle gain, no flagpole hardware in the way. At 28 feet the VDA achieves near 5/8λ geometry across the full HF spectrum. Return current flows through the lower element, not through soil, significantly reducing ground coupling and removing any dependency on a radial field. EOC, remote site, tower base, rooftop — when it has to perform without compromise, operators choose the DXV28.
Field Report
"Made significant DX contacts over the past nine months. Straight forward installation with very good support from Greyline. Excellent antenna."
— Dean Oakley · Verified Owner · Judge.me Review
Band Coverage
160–6M
All HF bands. One antenna. Push a button.
Wind Rating
55 MPH
ASCE 7-10 engineered. No flag load.
Guarantee
7 Years
Free shipping USA. 100% satisfaction.
The Physics
Why No Radials — and Why It Works
Traditional quarter-wave verticals feed at the current maximum at the base — pushing maximum I²R loss directly through soil. Every ohm of ground resistance sits in series with your radiation resistance, stealing signal before it leaves your yard.
The Greyline VDA is a vertical dipole. Return current flows through the lower element — not through the earth. This design significantly reduces ground coupling and removes your performance's dependency on a soil-based return path. Proper current distribution raises radiation resistance, improving efficiency without a single buried wire. At 28 feet, that efficiency advantage compounds across every band.
Physics foundation: Zavrel W7SX · Antenna Physics: An Introduction (ARRL, 2020) · Kraus W8JK · Antennas (McGraw-Hill) · Deep dive: What is a VDA? →
In the Box
Everything You Need. Nothing You Don't.
Antenna System
- 28' DXV VDA Radiator
- RF Choke & Precision Feedline Hardware
- Ground Sleeve Kit (in-ground + structure-compatible)
- Assembly Manual & Tuning Guide
- 7-Year Performance Guarantee
Mount Options
- In-ground (ground sleeve)
- Tower or mast mount
- Roof or deck mount
- Dock or bulkhead mount
- Tilt-mount for rapid deployment
Structural Engineering
Built for Real Weather
The DXV28 is engineered to ASCE 7-10 structural standards. No flag load means the full wind rating applies in all conditions.
| Model | Wind Rating | Standard |
|---|---|---|
| DXV12 | 155 MPH | ASCE 7-10 |
| DXV16 | 115 MPH | ASCE 7-10 |
| DXV20 | 90 MPH | ASCE 7-10 |
| DXV24 | 70 MPH | ASCE 7-10 |
| DXV28 | 55 MPH | ASCE 7-10 |
Ratings per ASCE 7-10. No flag load — single rating applies in all conditions.
Take It Further
Upgrades That Actually Move the Needle
9' DX Whip
The 28' with the whip is a formidable low-band machine. Up to +3.5 dBi. Lightweight, stealthy.
View Whip →LDG RT-100 Remote ATU
100W weatherproof remote tuner. DC over coax. One-button tuning across 160–6M. Bundle and save.
View Bundle →Need Shorter?
Height restrictions are real. Compare all five DXV sizes and find your ideal fit.
Compare All DXV Sizes →Want a Flagpole Version?
The DXF28 adds flag hardware, an HOA Architectural Brief, and Property Integrity Letter — same VDA core, HOA-ready packaging.
See the DXF28 →Grounding Note
Follow ARRL RF grounding guidelines. The DXV is a balanced VDA — tuner and RF choke must maintain a floating balanced feed. See the Tuning & Feed System Guide →
Specs & Shipping
| Spec | Detail |
|---|---|
| Height | 28 feet |
| Band Coverage | 160–6M (all HF + 6M) |
| Design | VDA — Vertical Dipole Antenna, OCF |
| Power Handling | Legal limit — constrained only by ATU rating |
| Radials Required | None |
| Material | 6061-T6 Aircraft-Grade Aluminum + Fiberglass |
| Wind Rating | 55 MPH — ASCE 7-10 |
| Structural Standard | ASCE 7-10 Engineered |
| Flag Kit Included | No — see DXF28 for flagpole version |
| Shipping | Free — USA. International rates at checkout. |
| Made In | Sun Valley, Idaho — USA |
| Guarantee | 7-Year Performance Guarantee |
Ham Radio is fun again! Pass it on... 73, The Greyline Performance Team · Sun Valley, Idaho · 435-200-4902