HOA Stealth Flagpole Antenna · 160–6M · No Radials · Made in USA
The DXF24 — More Aperture. Serious Low-Band Performance.
The DXF24 works every band, 160–6M, from a single feedpoint with no radials and no ground system — that is the headline. At 24 feet the low-band aperture comes into its own, where length is what matters on 40 and 80 meters, and on the upper DX bands the modeled gain runs up to +3.5 dBi. At 24 feet it still reads as a standard residential flagpole. A property asset in every sense — commercial-grade construction, HOA documentation included, and the curb appeal that makes neighbors ask where you bought your flagpole.
Why a Flagpole Antenna?
Most HOA CC&Rs explicitly permit residential flagpoles. The DXF's RF function is entirely internal — no visible stubs, no loading coils, no radial wires. From the street, it's a flagpole. A handsome one. The antenna approval is already in the CC&Rs — it's called a flagpole permit.
Band Coverage
160–6M
All HF bands. One antenna.
Ground System
No Radials
One feedpoint. Any surface.
Guarantee
7 Years
Free shipping USA. Made in Sun Valley, Idaho.
Field Report — HOA Golf Course Community
ARRL CW 160M Contest: 61 QSOs, 23 sections, 750–1,000 miles on 1.8 MHz. Runs contests at legal limit on 40–10M. “Going from the 20 ft to the 24 ft antenna made a very big difference.”
— Bill · K3WA · PVRC President · 24' DXF · Verified Owner
Independent Assessment — Defense Antenna Executive
“I ran a defense antenna company for 7 years. I am very impressed with the look, quality, machining, and part fit. It is a professional-grade product. ” HOA approved in Colorado. Concrete foundation. FT8 DX confirmed to Hawaii, South America, Europe, and Africa.
— Rob Freedman · WC0R · Retired Defense Antenna Executive · Amateur Extra · Colorado HOA
Field Report · Long-Term Reliability
Greg Newman, K7GAN — 24' DX Flagpole, 3.5 Years and Several Thousand QSOs
Greg installed his 24' Greyline DX Flagpole in a covenant-restricted area three and a half years ago. He's logged several thousand QSOs from it. His longest contact: 12,500 miles on FT8.
“Super quality material, was easy to install and performed better than expected. The DX Flagpole antennas are well worth the investment as they work extremely well, made of highest quality materials that will last for a very long time.”
Why this matters: Three and a half years is enough time for materials to fail, joints to corrode, and design weaknesses to surface. The Greyline 24' DX Flagpole at K7GAN's QTH hasn't done any of those. 6061-T6 aluminum, threaded transitions, and clean RF design carry the antenna through years, not just install day.
Aperture Plus Wire
The 24' Antenna Earns Its Aperture. Don't Lose It In The Coax.
A 24-foot DXF delivers meaningful low-band aperture. The wrong feedline gives that gain right back as heat. Use the Feedline Loss Calculator to see how much of your power actually reaches the radiator on each band — especially 10M and 12M, where loss compounds fastest.
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. It works every band, 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. On top of full coverage, the geometry approaches 5/8λ on the upper bands for strong low-angle DX radiation, and at 24 feet the added aperture lifts the low bands where it counts.
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.
Gain, Honestly
The 24' runs up to +3.5 dBi on the upper DX bands (modeled), with full per-band figures and their reference stated on one sourced page so the numbers stay consistent everywhere. Aperture & Gain — the modeled figures →
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.
Full Installation Guide →In the Box
Everything You Need. Nothing You Don't.
Antenna System
- 24' DXF Flagpole VDA Radiator
- RF Choke & Precision Feedline Hardware
- Ground Sleeve Kit
- Assembly Manual & Tuning Guide
HOA & Household
- USA-Made Flag Kit Hardware
- HOA Architectural Brief
- Property Integrity Letter (XYL & HOA ready)
- 7-Year Performance Guarantee
Structural Engineering
Built for Real Weather
Every DXF is engineered to ASCE 7-10 structural standards. Both columns below are real values for the actual geometry — flag flying and flag stowed. Stowing the flag removes drag and recovers margin, which is why the flag-down number is higher and why federal flag practice already tells you to lower the flag when weather threatens. When you compare antennas, the question worth asking is which standard produced the number. A figure you can stand behind in a storm is worth more than a bigger one you can't.
| Model | Flag Up | Flag Down | Standard |
|---|---|---|---|
| DXF12 | 155 MPH | 175 MPH | ASCE 7-10 |
| DXF16 | 115 MPH | 132 MPH | ASCE 7-10 |
| DXF20 | 90 MPH | 105 MPH | ASCE 7-10 |
| DXF24 | 70 MPH | 82 MPH | ASCE 7-10 |
| DXF28 | 55 MPH | 65 MPH | ASCE 7-10 |
Ratings per ASCE 7-10. Lower flag during approaching weather per US federal flag protocol.
Take It Further
Upgrades That Actually Move the Needle
9' DX Whip
Adds 9 feet of aperture for stronger low-band performance. Extends the upper radiator on every band. Lightweight, stealthy.
View Whip →LDG RT-100 Bundle
125W weatherproof remote tuner at the feedpoint. DC over coax. One-button tuning 160–6M. Bundle and save.
View Bundle →No Flag Needed?
The DXV24 delivers identical VDA performance without flagpole hardware.
See the DXV24 →HOA & XYL Approved
We've Done the Hard Part for You
Every DXF ships with an HOA Architectural Brief and Property Integrity Letter. A decade of field experience. Fewer than 10 storm damage reports. Zero HOA complaints.
For Your HOA Board
Architectural brief, wind ratings, approval letter — ready to print and submit.
HOA Approval Toolkit →For Your XYL & Neighbors
Appearance, safety, property values — addressed directly. Hand it over, let it do the work.
Neighbor & XYL FAQ →Feed System Note
The DXF is a balanced VDA — tuner and RF choke must maintain a floating balanced feed. See the Tuner & Balun Configuration Guide →
Specs & Shipping
| Spec | Detail |
|---|---|
| Height | 24 feet |
| Band Coverage | 160–6M (all HF + 6M) |
| Design | VDA — Vertical Dipole Antenna, OCF |
| Modeled Gain | Up to +3.5 dBi on upper DX bands (modeled) |
| Power Handling | Legal limit — constrained only by ATU rating |
| Radials Required | None |
| Material | 6061-T6 Aircraft-Grade Aluminum + Fiberglass |
| Wind Rating (Flag Up) | 70 MPH — ASCE 7-10 |
| Wind Rating (Flag Down) | 82 MPH — ASCE 7-10 |
| Shipping | Free — USA. International rates at checkout. |
| Made In | Sun Valley, Idaho — USA |
| Guarantee | 7-Year Performance Guarantee |
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.
A note on diameter, because it's widely misread: a thicker pole is not automatically a stronger one. Wind force scales with projected area — the width the wind actually sees — so doubling a pole's diameter roughly doubles the wind load it must survive, before accounting for the extra mass carried at height and the added dynamic fatigue on every gust cycle. The Greyline runs a 2-inch outer diameter precisely because a slim, engineered section sheds wind better than a fat one fights it. Narrower, run correctly, is the stronger answer.
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.
What's the current lead time and availability?
Each antenna is hand-built to order during our current artisan production run — typical lead time runs a few weeks, and we expect to return to ship-from-stock as the run completes. Current lead time is always posted on our Order Status page → Call 435-200-4902 for a specific ship date.
How long does shipping take once it leaves Sun Valley?
USA shipping is free. Ground transit runs 2–5 business days from Sun Valley, Idaho. Tracking sent at shipment. International rates calculated at checkout.
What's included — do I need to source anything separately?
Everything to assemble and mount is in the box. You supply coax and an ATU. That's it.
✓ VDA Radiator (your chosen height)
✓ RF Choke & Precision Feedline Hardware
✓ Ground Sleeve Kit — in-ground, tower, roof, deck, dock compatible
✓ Assembly Manual & Tuning Guide
✓ 7-Year Performance Guarantee
DXF Flagpole models also include: USA-made flag kit hardware, HOA Architectural Brief, and Property Integrity Letter.
Do I need an ATU — will my radio's internal tuner work?
Yes, an external ATU is required. The VDA presents variable impedance across its operating range — that's how it covers 160–6M from a single feedpoint with no traps and no radials. Most internal tuners won't handle the full impedance range on every band.
An external ATU lives in one of two places, and both are right depending on your run. For a short feedline run, a desktop ATU at the radio is the simpler path — it stays warm and dry indoors and you can hear it tune. For a longer run, a weatherproof remote ATU at the antenna base keeps the match close to the feedpoint; the LDG RT-100 is a low-cost 125W fit for that job. Either way, note that all ATUs carry a reduced power rating for digital modes (FT8, Winlink, JS8Call) due to 100% duty cycle heat loading — check your tuner's digital rating before running full power on those modes. Running high power? The antenna handles the full legal limit on every band — the tuner is the only ceiling, and higher-power ATU options are available. Antenna + ATU bundles →
Is the ATU bundle the best value?
Yes. Every antenna is available bundled with the LDG RT-100 at a discount versus buying separately. Free shipping USA. Shop all bundles →
How difficult is installation? How long does it take?
Most operators are on the air in under an hour. Dig a post hole, build the antenna sections (15–30 min), drop it in, run coax, connect the ATU. All stainless hardware comes pre-fastened — no loose hardware to lose in the grass.
Assembly documents at Setup & Manuals → Questions during install? Call 435-200-4902.
What does the 7-Year Guarantee cover?
Seven years of performance coverage. If it fails under normal operating conditions, we make it right. No questions asked. A customer's antenna fell in a severe ice storm — we sent a replacement immediately. Full terms at 7-Year Warranty Policy →
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.
Ham Radio is fun again! Pass it on... 73, The Greyline Performance Team · Sun Valley, Idaho · 435-200-4902