コレクション: HF Vertical Antennas | No-Radial VDA Systems 160–6M

The Greyline HF Vertical Dipole Series

No Radials. Lower Ground Loss. Just Signal.

The Greyline HF Vertical Antenna is not a compromise. It is the result of a physicist's answer to a DXer's problem: how do you significantly reduce ground coupling, the single largest source of loss in a vertical antenna system? You eliminate the need for ground radials, entirely.

Our OCF Vertical Dipole Antenna (VDA) design feeds a high-aperture radiator in a balanced configuration — the antenna works against itself, not against a buried radial field. The result is a quieter noise floor, lower losses, and a smaller physical footprint than any radial-dependent system.

Choose Your Vertical

Five core sizes from 12 ft through 28 ft — each covering 160 meters through 6 meters. No tuning required at the antenna. No pruning. No radials. Add an ATU at the base for seamless transceiver matching and you are on the air in under an hour.

• 12 ft DXV — Entry-level full-band coverage. Apartment rooftop, small lot, or portable base mount.
• 16 ft DXV — More aperture is more signal. The EmComm team's first step up from portable.
• 20 ft DXV — Core performer. Small yard, suburban rooftop, or rapid-deploy EOC installation. The most discerning HOA approves.
• 24 ft DXV — EmComm standard. Embassy-class performance. Chosen by agencies requiring permanent, high-reliability HF infrastructure. 
• 28 ft DXV — Maximum aperture. EOC-grade. The highest-gain configuration in the Greyline VDA line for all band use.

The 5/8 Wave Gain Engine

Pair any DXV12–DXV28 with our 9-ft Adjustable DX Whip to hit the 5/8λ sweet spot on your target bands. Field-tested gain: up to +3.5 dBi at the horizon. That is the effective equivalent of doubling your transmitter power — without touching your radio, your license class, or your power limit.

Pair With an ATU for Quick, Maximum Coverage

Every Greyline VDA is designed to work optimally with an automatic antenna tuner. The LDG RT-100 is our recommended low-power match — 100W weatherproof, powered over coax, no additional cables. Together they deliver flat SWR on every band from 160M to 6M. Want more options? There are many high-power ATUs on the market that work flawlessly with Greyline on either end of the coax (desktop or remote ATU both work Real DX with Greyline!)