HOA Stealth Flagpole Antenna · 160–6M · No Radials · Made in USA
The DXF16 — Front Entry Scale. Full HF Coverage.
The DXF16 fits front entry installations, side yards, and compact suburban lots where a 20-foot pole would be too tall. Flies a full-size flag at a scale that reads as a standard residential flagpole. Full 160–6M coverage from a single feedpoint. A genuine property asset — curb appeal that replaces the bird's-nest wire problem HOA rules were written to solve.
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.
Wind Rating (Flag Down)
132 MPH
ASCE 7-10 engineered. Flag-up: 115 MPH.
Guarantee
7 Years
Free shipping USA. Made in Sun Valley, Idaho.
⚑ Flag-Down Protocol
At 16 feet, the flag-up wind rating is 115 MPH. The 132 MPH flag-down rating is your ASCE 7-10 engineered structural number.
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 · 16' DXF · 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. Strong performer on 20M and above. Near 1/2λ on 10 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.
Full Installation Guide →In the Box
Everything You Need. Nothing You Don't.
Antenna System
- 16' 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. Federal practice: lower the flag when weather threatens. The flag-down rating is your engineering number.
| 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 strong low-band gain improvement. Up to 3.5 dBi additional gain potential. 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 DXV16 delivers identical VDA performance without flagpole hardware.
See the DXV16 →160–6M, One Pole
The 16' DXF covers 160 meters through 6 meters with no radials — more aperture in a still-compact footprint. ASCE 7-10 wind-rated to 132 MPH. Adding the 9' DX Whip extends the upper radiator on every band the antenna covers; the geometry hits 5/8λ at 10M bare or 12M with the whip, where the published literature documents up to 3.5 dBi over a 1/4-wave reference under ideal ground conditions.
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 | 16 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 (Flag Up) | 115 MPH — ASCE 7-10 |
| Wind Rating (Flag Down) | 132 MPH — ASCE 7-10 |
| Shipping | Free — USA. International rates at checkout. |
| Made In | Sun Valley, Idaho — USA |
| Guarantee | 7-Year Performance Guarantee |
Wind Rating — Flag Down
132 MPH
ASCE 7-10 structural engineering value
Strong suburban rating. The 16' fits compact lots, front entries, and side yards where the 20' is a foot too tall. Meaningful step up on 40M and 80M over the 12'.
5/8λ Sweet Spot
10M
Near 1/2λ — strong upper HF
Approaches half-wave on 10M. Solid 15M and 12M. Covers 160–6M from a single feedpoint with no radials, no traps, no compromise.
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 16 feet, the Greyline VDA presents 2.67 square feet of wind surface — height × outer diameter. A competing design using a larger diameter at the same height presents proportionally more. Wind force scales with projected area linearly and with velocity squared — doubling the diameter does not double the problem, it dramatically compounds it. More mass at height also increases dynamic fatigue loading on every oscillation cycle. Material where the physics demands it. Not where it adds weight without benefit.
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 engineering. Same guarantee. Threaded metal-to-metal section marriages — no compression collars, no through-bolting. Cleaner joint, less total weight, same ASCE 7-10 wind ratings.
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, returning 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