Skyline Series · Heavy-Duty · 33 Feet · 160-6M · No Radials · Made in USA
The Skyline 33 HD: Skyline Height, Built for Wind, Built to Grow.
The 24' HD with the 9' DX Whip on top: 33 feet of HF vertical, every band 160 through 6 from a single feedpoint, no radials, on an oversized heavy-duty base. The same signal as the Skyline 33, for sites where the wind makes the decision.
Two Reasons People Choose HD
Wind today. About 90 mph with the whip on, 33 feet in the air (preliminary engineering estimate; PE-certified rating to follow), against about 64 for the standard Skyline 33.
Height tomorrow. The heavy-duty base is a platform. Add a section under the whip and it is a Skyline 37 HD, then a Skyline 41 HD. Add below the feedpoint, 4 feet, 8 feet and more, and you raise the feedpoint and lift the image, the other half of a vertical's RF picture, with a longer ladder line to match. Buy the base once; grow the antenna for years. Ships in 1-2 weeks, free to the USA and Canada.
Why the Whip Pays
Height is aperture. On 40, 80 and 160, nine more feet adds radiator exactly where it counts. In NEC modeling over average ground, a 33-foot Greyline is strongest on 17 meters, about +3.5 dBi at the best DX angle, and every band still works. See the standard Skyline 33 → · The whole HD Series →
Walk It Down Before the Storm
Pair it with the 3" HD Tilt-Up Base, built alongside the antenna. When the forecast turns, walk the pole down, one person, no ladder; every height change happens at waist level too. 10% off with the HD in the cart. Bart, N1BRL, down and back up in two minutes →
Specs
| Height | 33 feet (24' HD + 9' DX Whip, whip adjustable); grows with sections above or below the feedpoint |
| Pole | Oversized heavy-duty base, 6061-T6 aluminum, stainless hardware |
| Bands | Every band, 160-6M; strongest on 17M (about +3.5 dBi, NEC) |
| Radials | None |
| Wind | About 90 mph at 33 feet with the whip (preliminary engineering estimate); PE-certified rating to follow |
| Foundation | Heavy-duty concrete foundation, set plumb; drawing on the Assembly Documents page |
| In the box | 24' HD radiator, 9' DX Whip, feedline kit (ladder line, five snap-on ferrites, ladder-line to PL-259 adapter, spacers). Every document online, always current. |
| 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