20' HD | Heavy-Duty Greyline HF Vertical, 160-6M

HD Series · Heavy-Duty · 20 Feet · 160-6M · No Radials · Made in USA The 20' HD: The Strongest Greyline We Build. Every band 160 through 6 from a single feedpoint, no radials, on an oversized heavy-duty base. At 20 feet it keeps a low profile for strict height limits and stands up to the worst weather on the coast, the plains and the ridgelines. About 124 MPH at 20 Feet · Now Taking Orders Our engineering model puts the 20' HD at about 124 mph, against 90 mph for the standard 20-foot vertical. Ships in 1-2 weeks with free shipping to the USA and Canada. That figure is a preliminary engineering estimate; the PE-certified rating will be published here when complete. Which 20-Footer? Same Antenna, Two Builds 20' DX Vertical 20' HD Signal Identical: every band 160-6M, same feedpoint Wind 90 mph (ASCE 7-10) About 124 mph* Tilt Tilt-Up Base 3" HD Tilt-Up Base *Preliminary engineering estimate; PE-certified rating to follow. Not sure which your site needs? Call 435-200-4902. Every Band, From One Feedpoint Every Greyline works every band, 160 through 6. At 20 feet the antenna also runs ahead of a full-radial quarter-wave on 20 through 10 meters in NEC modeling over average ground, strongest on 10. The Greyline is a vertical dipole: return current flows through the lower element, not a buried radial field, so frozen ground, rock and sand don't matter. Specs Height 20 feet Pole Oversized heavy-duty base, 6061-T6 aluminum, stainless hardware Bands Every band, 160-6M, one feedpoint Radials None Wind About 124 mph (preliminary engineering estimate); PE-certified rating to follow Foundation Heavy-duty concrete foundation, set plumb; drawing included with your order; PE-designed foundation for exposed or critical sites In the box 20' HD radiator with top truck, feedline kit (ladder line, five snap-on ferrites, ladder-line to PL-259 adapter, spacers) Ships In 1-2 weeks; free to the USA and Canada Warranty 7 years Ham Radio is fun again! Pass it on… 73, Jon KL2A · Greyline Performance · 435-200-4902