Greyline Performance · HF Vertical Antennas · Sun Valley, Idaho
Your Neighbors See a Flagpole.
Your radio sees 160 meters to 6 meters — no radials, no complaints, no HOA grief.
Greyline makes HF vertical dipole antennas built as genuine residential flagpoles — sized to the U.S. Flag Code and engineered to ASCE 7-10 — and as strong, elegant free-standing verticals. Every height, 12 to 28 feet, works every band, 160 through 6 meters, from one feedpoint, with no radials. The lower element carries the other half of the antenna, so there is nothing to bury and nothing to hide.
DX Flagpoles · DX Verticals · Free HOA Approval Toolkit
“100 countries in 9 months. 100W. 20ft flagpole. Suburban HOA. Real DX.”
N0CPO · Pennsylvania · Verified Owner
160–6M
Every band, one feedpoint
No Radials
Nothing to bury
7 Years
Warranty
Ships Free
USA and Canada
Start Here
What's your situation?
Nobody shops for an antenna. You shop for a way on the air from the yard you actually have. Pick your road.
Storm Country
120 MPH. Still Standing.
Days after installation, Hurricane Milton came through Naples at just under 120 miles per hour. Bob, KC4OS, walked outside, took inventory, and filed his complete damage report: "a mere baby wind." A uniform 2 inch profile engineered to ASCE 7-10 gives the wind almost nothing to hold.
Two Ends Of One System. The 9' DX Whip on top wakes up 40 and 80 meters. The Tilt-Up Base at the bottom brings the antenna down before the weather -- one person, one bolt.
How It Works
Three Things to Know Before You Buy Any Vertical
It Is a Real Flagpole
The DX Flagpole flies a full-size flag on a 2-inch aluminum pole with the flag kit included. To the neighbors and the HOA it is a flagpole. The antenna is the pole itself: no traps, no coils, no wires.
The Other Half Is Built In
A quarter-wave vertical needs a field of buried radials for its return current. A Greyline is a vertical dipole: the lower element carries that current, so the antenna works the same on sand, rock, a rooftop or frozen ground.
One Feedpoint, Every Band
With a wide-range tuner in the shack or at the base, every height works 160 through 6 meters. Taller heights add electrical length for 40 and 80; the 9-foot DX Whip adds more at any time.
What is a vertical dipole antenna? → · Which height fits your lot? →
Agencies · EOCs · EmComm
HF Infrastructure That Stands Up and Stays Up
6061-T6 aluminum, .125 wall bottom to top, stainless hardware, engineered to ASCE 7-10. No radials, so it deploys on rooftops, pads and frozen ground. EmComm and government HF from 1.5 MHz; every amateur band from 160 meters through 6. Purchase orders welcome; capabilities statement on request.
Agency and Government Solutions → · Capabilities Statement →
The Greyline Clubhouse
A Free Live DX Console for the Whole Hobby
Live cluster, RBN, PSKReporter, space weather, the contest calendar and who is on the air, on one page. Greyline owners glow gold on every pane.
Greyline ToolBox | Free to dream - CALCULATORS
Greyline RF Tools · Free for Operators
How Much Of Your Power Reaches The Antenna?
Pick your coax, your run length, your band, and your TX power. The calculator tells you how much signal gets to the antenna and how much is lost as heat in the cable. RG-58 through 7/8" hardline. 80M through 10M. Free for any operator. Pass it on.
Greyline RF Tools · Free for Operators
Design Your Antenna Dream — And See The Physics
Pick a Greyline VDA configuration. See gain on every band, wind ratings, sweet spots. Or tell us your favorite bands and we'll find the right antenna for you. Two modes, full physics, free.
Let customers speak for us
Easy installation and work even better than expected. WX4DX
I thought I was getting great reception from my end feed wire.
I installed the 24' vertical with the remote tuner and connected it to my Icom 7300. What a night and day difference! My radio came alive. I've already connected with Australia, Japan, and all over the states.
NOW I'm being teased with a 9' additional whip new to Greyline. I may pull the trigger for it in a couple of months.
Overall you can't go wrong with this antenna.
Excellent antenna. Made significant DX contacts over the past nine months. Straight forward installation with very good support from Greyline.
I submitted a very positive review on the performance of my 20" flagpole but neglected to mention the high quality of the machining on the pieces and hardware. The pieces went together like a hand and glove.
Really appreciate the fine workmanship.
The 4’ extension arrived in a reasonable amount of time. Construction was excellent and assembled easily with my existing 24’ flagpole antenna. I have noticed improvement in reception and signal reports on the air, and look forward to continued experimenting on the air with this addition to my station.
Looks tremendous with Uk flag and works superb Highly recommended
I purchased the 24' flagpole antenna with 4' extension added later. The materials and construction are very good. Parts fit together very well. Antenna aside, this is a handsome flagpole with flag.
I had no expectations for 160 meters. I purchased the antenna to supplement my EFLW antennas for 40 and 80 meters. Initially all tuned well from 10 - 40 meters using an LDG RT-100 remote tuner, but unable to tune on 80 meters. I upgraded to a Chameleon CHA-URT-1500 1.5 KW remote tuner, but still unable to resonate on 80 meters. I added a Palomar 4:1 balun between the remote tuner and the antenna and now am able to tune antenna well on both 40 and 80 meters.
I have had impressive domestic and DX contacts on 10-40 meters so far. I am hoping that with a little more effort, I can eventually get DXCC on both 40 an 80 meters. Will keep you updated.
The build quality is excellent with tight tolerances. The buyer must be aware of a complete system antenna design. The includes environmental concerns of your QTH such as rain sprinkler system heat and lightning. Hear in California we have the extremes The website addresses some of the along with YouTube videos but the buyer has to put it all together.
Digging the 3 foot hole and finding the best pvc sleeve to use was a challenge along with compliance with QTH environmental concerns. I am happy with this purchase but there are challenges to deal with to make it work!
Very sturdy with beautiful looks! First 3 hf contacts were Japan on 10 & 17 meters from Tucson, Az
I have two gray line antennas both with 4 foot extensions on them. I have a 24 foot with a 4 foot extension making 28 and a 20 foot with a 4 foot extension making 24. I have used both of these antennas and made contacts all over the world. I have an all continent award. I also have friendship awards on all bands 80 through 6 m I can tune 160 m as well. Only one contact on there because the band conditions have been poor not the antenna’s fault. These things are fabulous if you live in an HOA or an area where you just need a vertical Off Center fed dipole. Grayline , customer support and antenna quality are unsurpassed. These are aircraft quality, aluminum and hardware unmatchable in the regular antenna industry. These things are Support poles very lightweight. You can install it yourself but extremely thick sidewall tubing. This antenna will stand a lifetime of weather very inconspicuous and no problem working worldwide with only 100 W With an amplifier this thing would be unbeatable in contesting.
I'm very happy with the Greyline Flag pole antenna, easy to install and the shipping was fast with all the parts arriving at the same time.
I'm very happy with this antenna. It works wonderful and I couldn't be happier.
I originally installed a Greyline DX 24' Flagpole, in my covenant restricted area,
about 3.5 years ago and made several thousand OSOs. Super quality material, was
easy to install and performed better than expected from my noisy locale.
Due to some issues with the park I live in and some performance degradation, I decided to
refurb the installation with new feedline, balun (my tuner does not have a built-in balun)
choke and the ladder line. During the process, I found a frayed part of the internal
ladder line that look like it was chewed on and a few other minor issues (weather related)
Needless to say, it fired up first time with no issues (I followed the tips) and seeing
signals and S levels I haven't seen in awhile..
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.
Longest QSO was about 12,500 miles on FT8. Super awesome.
73,
Greg K7GAN
Looks great and works even better. I hear more stations on my regular nets than I normally do. I used stone papers for a rectangular wall around the flagpole which matches the house. A beautiful, wonderful, addition to my hoa property.
I was impressed with the quality of the antenna tubing used. It's not the normal aluminum used by the other manufacturers, but a precision machined tubing. It fit together tightly with the thick fiberglass insulating sections. Using the LDG-RT600 remote antenna tuner, it tuned very well on 40-6 (I don't use 160/80) as a ground-mounted 28 ft. vertical dipole and really captures the DX! My QSO and country count really started accelerating from where it was. I live on a small corner lot with no HOA, and have no real trees for antenna supports. I can now reach AUS and the South Pacific with ease from the East Coast of the USA. I had a special installation so it took me about 5 hours to install by myself (several trips to several hardware stores for clamps, all-thread and such). It was pretty much a 'remove and replace' with the old antenna. All-in-all, it was a worthwhile investment and upgrade, I love this thing!
No Radials. No Compromise.
Forget burying wires. Greyline VDA flagpoles are engineered for efficiency without a buried radial field. Rapid deployment, anchored in a single ground sleeve, ready for both DX and EmComm work. NVIS performance on the lower bands. A 2" pole footprint means you can place the antenna in the quietest spot on your property — better signal-to-noise where it matters most.
See why our 24' DX Flagpole outperforms traditional verticals in the radiation pattern at right. Note how the 43' vertical on 15M (orange pattern lines) shoots straight up — power going up instead of out is power not making the DX contact.
Color Key: 80M-red | 40M-blue | 20M-green | 15M-orange
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The Signal Report
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Bookshelf Wisdom
We build to the published physics.
Every performance claim on this site traces to the literature: Antenna Physics: An Introduction by Robert Zavrel, W7SX; the Kraus Antennas canon; N6LF's ground-system and vertical experiments; K9YC's choke and RFI engineering — and the rest of the shelf. We read the books so the claims survive scrutiny; we hand you the books so you can check us.
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