Capabilities Statement | Greyline Performance

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Capabilities Statement

Greyline Performance - HF Antenna Infrastructure

Section 889 compliant | FAR 52.204-24 compliant | 100% Made in USA

Founded

Sun Valley, Idaho

Field Experience

10+ Years

Origin

100% USA

Company Overview

About Greyline Performance

Greyline Performance designs and manufactures high-resilience HF antenna infrastructure for amateur radio operators, government agencies, research institutions, defense contractors, and emergency management organizations. Our VDA (Vertical Dipole Antenna) systems require no buried radial field, deploy on any surface, and operate across 1.5-54 MHz from a single feedpoint. Systems are in active service with government and diplomatic facilities, research programs, state emergency operations centers, and defense contractors. All products are manufactured in Sun Valley, Idaho from domestic materials.

On customer identification: Greyline does not name agencies, institutions, or installations in any public or promotional material, and does not provide customer references that identify them. Operators who require a discrete profile in the field are entitled to the same discretion from their vendor.

Core Competencies

What We Deliver

Low Visibility HF Systems

Antenna systems presenting as standard commercial-grade flagpoles. Internal antenna function, with no visible stubs, loading coils, or external evidence. 160M-6M from a single feedpoint. Appropriate for installations requiring a discrete RF profile.

Zero-Radial VDA Physics

Off-center-fed Vertical Dipole Antenna design. Return current flows through the lower element rather than through a buried radial field. Deployable on rooftop, concrete, asphalt, or frozen soil. Performance far less dependent on ground conductivity than a quarter-wave vertical.

Mission-Grade Construction

Heavy-wall 6061-T6 aluminum alloy, 316 marine-grade stainless hardware throughout. ASCE 7-10 wind load engineered. 7-year structural guarantee. No traps, no coils, no failure points under sustained digital operation.

Field And Research Deployment

No radial installation, no ground system preparation. Single ground sleeve. Suited to sites where a conventional ground system is impractical or impossible: rock, permafrost, sand, rooftops. Compatible with ALE, STANAG 4538, MIL-STD-188-141B, and all digital HF modes.

Technical Specifications

System Performance Parameters

Parameter Specification
Frequency Coverage 1.5-54 MHz (160M-6M), single feedpoint
Power Handling Full legal limit at 100% duty cycle (radiator). System power constrained by the selected ATU rating.
Antenna Type OCF Vertical Dipole (VDA), no radials required
Primary Material Heavy-wall 6061-T6 aluminum alloy
Hardware 316 marine-grade stainless steel throughout
Wind Load Rating ASCE 7-10 engineered, 35 to 155 MPH by model and configuration
Deployment Surface Ground, rooftop, concrete, asphalt, frozen soil
Mode Compatibility ALE, STANAG 4538, JS-001, MIL-STD-188-141B, FT8, Winlink, VARA, voice, CW
Available Heights 12, 16, 20, 24, 28 feet, custom configurations available
Guarantee 7-year structural guarantee, transferable

Differentiators

Why Greyline

No Radials

Deployable on any surface without ground system preparation. No buried wire, no trenching, no soil dependency.

A Decade Of Field Data

Ten years of continuous field service across every climate and terrain, from coastal salt air to high desert to frozen ground.

Supply Chain Secure

100% domestic manufacture. No covered telecommunications equipment. FAR 52.204-24 compliant. Section 889 compliant.

Procurement Contact

Government & Agency Liaison

Procurement Credentials

Section 889: Compliant

FAR 52.204-24: Compliant

Origin: 100% Made in USA

Registration details and documentation furnished on engagement

Ham Radio is fun again! Pass it on. 73, The Greyline Performance Team