Shop by Wind Rating
Shop by Wind Rating
What Wind Does Your Antenna Need to Handle?
Pick flagpole or vertical, then a wind speed. You will see every Greyline rated for it, tallest first. Every one works every band, 160 through 6, from one feedpoint, with no radials. Want one answer for your lot instead? Find your Greyline in four taps →
1. Which kind?
2. Rate it with the flag…
3. At least this much wind:
Standard 12- to 28-foot ratings are calculated to ASCE 7-10. *Skyline and heavy-duty (HD) figures are preliminary engineering estimates with no flag; PE-certified ratings will be published when complete.
The Worst Day of the Year Is a Ground Job
Every rating above is for a pole standing in the wind. With a Tilt-Up Base, you don't have to leave it there. When the forecast turns, one person walks the antenna down in two minutes, and walks it back up when the sky clears. Bart, N1BRL, does it twice a day:
Down, whip in, back up. Video: Bart, N1BRL. The Tilt-Up Base fits every 2-inch Greyline; the 3-inch HD Tilt fits the HD Series; the Deck or Concrete Mount is the same tilt with no digging.
Why the flag matters
The flag is the largest wind load on a flagpole, so the rating is lower while it flies. The U.S. Flag Code calls for lowering it in severe weather; with the flag down, the pole is rated like the bare pole.
What wind do I need?
Your local design wind speed is on the ASCE Hazard Tool: enter your address and pick Wind. Coastlines, ridgelines and open ground run higher; that is what the HD Series is built for.
Walk it down
Every Greyline pairs with a Tilt-Up Base, so one person can lower the antenna ahead of a big storm and raise it after. In the same cart as any antenna it comes 10% off, and $50 off with a 12-foot, any Skyline, or a 28-foot with the whip. Questions about your site? Call 435-200-4902.
Ham Radio is fun again. Pass it on... 73, Jon KL2A & the Greyline Performance Team