HOA Flagpole Antenna + Remote ATU Bundle · 160–6M · No Radials · Made in USA
The DXF24 Bundle — Complete System. On the Air Fast.
The DXF24 is the choice for operators who want meaningful low-band improvement and have the lot for it. Four additional feet of aperture over the DXF20 makes a measurable difference on 40 and 80 meters. 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. Paired with the LDG RT-100 remote ATU at the antenna base. You supply coax. That’s it.
From the Founder
“I run a 32-foot at home and work Africa and Asia regularly on 10 through 30 meters. Real gain across every one of those bands — from +1 dBi on 30M up to +3.5 dBi on 17M. Go as tall as your lot allows — the multiband improvement is real.”
— Jon KL2A · Founder, Greyline Performance
Band Coverage
160–6M
All HF bands. One antenna. One tuner.
Wind Rating
70 MPH
ASCE 7-10 engineered.
Guarantee
7 Years
Free shipping USA. Sun Valley, Idaho.
What’s in the Box
The Complete System.
Antenna System
- 24’ DXF VDA Radiator
- RF Choke & Precision Feedline Hardware
- Ground Sleeve Kit
- Assembly Manual & Tuning Guide
- 7-Year Performance Guarantee
- USA-Made Flag Kit Hardware
- HOA Architectural Brief
- Property Integrity Letter
LDG RT-100 Remote ATU
- 125W, 160–6M — check digital duty cycle rating
- Weatherproof — base-mount rated
- DC powered over coax — no extra cables
- One-button tuning, memory recall
- Works with any transceiver
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 · Full contest report →
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 · Full case study →
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. Achieves 5/8λ geometry on 12 meters, near 1/2λ on 17 meters. Meaningful aperture advantage on 40 and 80 meters over shorter models.
Physics foundation: Zavrel W7SX · Antenna Physics: An Introduction (ARRL, 2020) · Kraus W8JK · Antennas (McGraw-Hill) · What is a VDA? →
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 →HOA & XYL Approved
Every DXF Bundle Ships with the Approval Toolkit
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.
Neighbor & XYL FAQ →Feed System Note
Balanced VDA — the LDG RT-100 is pre-configured for base-mount. See the Tuner & Balun Configuration Guide →
Specs & Shipping
| Spec | Detail |
|---|---|
| Antenna Height | 24 feet |
| Antenna Type | DXF — Flagpole VDA, OCF |
| Band Coverage | 160–6M (all HF + 6M) |
| ATU | LDG RT-100 — 125W, 160–6M, base-mount, DC over coax |
| Radials Required | None |
| Material | 6061-T6 Aircraft-Grade Aluminum + Fiberglass |
| Wind Rating (Flag Down) | 70 MPH — ASCE 7-10 |
| Wind Rating (Flag Up) | 50 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.
At 24 feet, the Greyline VDA presents 4 square feet of wind surface (height × OD). A competing flagpole antenna at this height uses approximately 4" OD — a number their manufacturer declines to publish, inferred from their own base insulator dimensions. At 4" OD and 24 feet, that pole presents roughly 8 square feet of wind surface. Exactly double. Wind force scales with projected area linearly and with velocity squared. That same competitor claims a higher unflagged wind rating than the Greyline at this height — without citing any engineering methodology.
The Math That Doesn't Add Up
A pole with twice the projected area at the same height and moment arm cannot honestly claim a higher wind rating than a pole with half the area — not under ASCE 7-10 methodology. Add uniform thick wall construction throughout (more mass at height, greater dynamic fatigue loading on every oscillation cycle) and the physics moves further in the wrong direction.
Their wind rating cites no standard. Their OD is not published. Their transformer ships separately, 10 days after the antenna. The math is published here because it holds up.
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 competitor which standard they used. If they can't cite one, you have your answer.
The antenna in this bundle ships from our current artisan production run — hand-built, individually fitted and finished, with threaded metal-to-metal section marriages. Same engineering, same guarantee, same performance. The LDG RT-100 ships as matched system. Full engineering reference →
Limited Edition · Artisan Production Run
Hand-built antenna. Production-matched tuner. The complete system, built to last.
Same 6061-T6 aircraft aluminum. Same ASCE 7-10 wind ratings. Same 7-year guarantee. Threaded transition sections machined directly into the metal — self-aligning, no through-bolting, less total weight. Paired with the LDG RT-100 at the feedpoint where the tuner belongs.
Manufacturing expanding. Things coming this year. Watch this space.
Common Questions
Before You Order — Answered.
What’s the current lead time and availability?
We ship from stock — same or next business day when available. Peak season may carry 1–3 week queue. Current lead time 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. That’s it.
✓ VDA Radiator (your chosen height)
✓ RF Choke & Precision Feedline Hardware
✓ Ground Sleeve Kit — in-ground, tower, roof, deck, dock compatible
✓ LDG RT-100 Remote ATU — 125W, weatherproof, base-mounted
✓ Assembly Manual & Tuning Guide
✓ 7-Year Performance Guarantee
Complete system — antenna and ATU included. You supply coax only.
The bundle includes the LDG RT-100 — what power level does it handle?
The LDG RT-100 mounts at the antenna base, powered over coax — no extra cables. 125W, 160–6M, weatherproof. Like all ATUs, it carries a reduced power rating for 100% duty cycle digital modes — check the spec sheet for your operating style. Running above 125W? Source a higher-power ATU for your needs. The antenna handles any power level and any mode without restriction.
Are there other bundle configurations available?
The standard bundle pairs your antenna with the LDG RT-100 (125W). For higher power requirements, contact us — we can configure bundles with the higher-power ATU or equivalent. Contact us →
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 →
Ham Radio is fun again! Pass it on... 73, The Greyline Performance Team · Sun Valley, Idaho · 435-200-4902