12' HF Vertical Antenna | No Radials | 160-6M | Greyline Performance

HF Vertical Antenna · 160–6M · No Radials · Made in USA

The DXV12 — Maximum Wind Rating. Any Surface.

The DXV12 is built for rooftop, hard-surface, and high-wind installations. No flagpole hardware — clean bare vertical. The highest wind rating in the DXV lineup at 175 MPH. Full 160–6M coverage with no radials. Deploys on concrete, asphalt, frozen ground, or rooftop without a ground system.

DXV vs DXF — Same Physics, Different Profile

The DXV is the bare vertical — no flagpole hardware, no flag kit. Same OCF VDA physics as the DXF. Choose DXV for rooftop, deck, commercial, POTA, or any install where the flagpole aesthetic isn't needed. Want the flagpole version? See the DXF12

Field Report — Height-Restricted HOA

A Phoenix-area operator with a 16-foot HOA height restriction runs confirmed SWR on every band from 160 through 6 meters. The VDA doesn't need height to load — it needs a good tuner and the right feedline. Go as tall as your lot allows. Work everything either way.

— KJ7CWQ · Phoenix, AZ · Verified Owner

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. Covers 160–6M from a single feedpoint with no radials. Return current flows through the lower element, not through a buried radial field — significantly reducing ground coupling and removing dependency on soil conductivity. Performance consistent on any surface. 5/8-wave on 6 meters.

The physics behind the no-radial vertical dipole is established, published work — the full reference shelf is cited below, and a deeper VDA explainer lives in the Signal Lab for further study.

Before You Install — Run a Noise Audit

The VDA's 2-inch pole footprint is the smallest ground signature of any full-HF-coverage antenna. A traditional radial field extends hundreds of feet at 160 meters — running toward every noise source on the property. The VDA goes where you choose. Grab a battery-powered AM radio, tune off any broadcast station, walk your property, and find the quietest spot. That's where the pole goes.

In the Box

Everything You Need. Nothing You Don't.

Structural Engineering

Built for Real Weather

Every DXV carries a single wind rating — no flag load variable. ASCE 7-10 engineered throughout.

Ratings per ASCE 7-10.

Take It Further

Upgrades That Actually Move the Needle

Feed System Note

The DXV is a balanced VDA — tuner and RF choke must maintain a floating balanced feed. See the Tuner & Balun Configuration Guide

Specs & Shipping

DXV or DXF? Same VDA physics. The DXF12 adds flagpole hardware, USA flag kit, and HOA Architectural Brief. Choose the DXV12 for rooftop, deck, or any install where the flagpole aesthetic isn't needed.

Construction — 6061-T6 Aircraft Aluminum

Outside: 2" OD, full length — uniform profile top to bottom. Clean. Sleek. Invisible as an antenna. Inside: wall graduates where the physics demands it — 0.125" lower 30% where base bending stress peaks, 0.065" upper 70% where reducing mass at height lowers dynamic wind loads. Zero plastic. All-metal. McMaster-Carr hardware throughout.

At 12 feet, the Greyline VDA presents 2 square feet of wind surface — height x outer diameter. This is the smallest structural footprint of any full-HF-coverage antenna available. A wider-diameter pole at the same height carries proportionally more wind load on every gust, and cycles that load through the base connection every time the wind shifts. More mass at the top of a cantilevered structure does not improve structural performance — it works against it.

Every Greyline wind rating is derived from ASCE 7-10 structural engineering values — actual geometry, actual math, published methodology. A wind rating without a cited standard is a guess dressed as a spec. Ask any antenna maker which standard they used. If they can't cite one, you have your answer.

Limited Edition · Artisan Production Run

This unit was built by hand — one at a time — by someone who knows every inch of it.

Same 6061-T6 aircraft aluminum. Same ASCE 7-10 wind ratings. Same VDA geometry. Same 7-year guarantee. Threaded transition sections machined directly into the metal — self-aligning, no through-bolting, less total weight.

Manufacturing expanding. Things coming this year. Watch this space.

Common Questions

Before You Order — Answered.

Every Greyline design decision traces back to named, published antenna physics — Zavrel W7SX, Kraus W8JK, Severns N6LF on ground systems, Maxwell W2DU on transmission lines, Lewallen W7EL on modeling. Not opinions. Cited works.

The full shelf — Zavrel, Kraus, Severns, Maxwell, Lewallen — lives under The Signal Lab · The Shelf We Read From in the menu, open to everyone.

Ready?

The DXV12 Ships Free Anywhere in the USA.

Scroll up and add it to your cart — or call and talk it through with us first. We enjoy talking radio, and we would rather you order the right height than the nearest one.

435-200-4902

Need more aperture? Step up the line:

Ham Radio is fun again! Pass it on... 73, The Greyline Performance Team · Sun Valley, Idaho · 435-200-4902