HF Antenna Procurement Justification Brief | Greyline

TO: Office of the City Manager / Budget Committee

FROM: Emergency Management Operations / Infrastructure Security

SUBJECT: Hardening Municipality RF Infrastructure via Greyline 6061-T6 HF Assets

1. PROPOSAL: This document justifies the procurement of Greyline 6061-T6 heavy-wall aluminum radiators as a Permanent Property Asset and capital improvement for municipality continuity. By utilizing Vertical Dipole Antenna (VDA) physics, these assets provide mission-critical HF (160–6M) coverage while maintaining a low-visibility civic profile.

STATUS: 100% MADE IN USA  |  FAR 52.204-24 & SECTION 889 COMPLIANT.

2. TECHNICAL SUPERIORITY: Utilizing VDA physics, these assets require zero buried radials, allowing for immediate deployment on rooftops, asphalt, or rocky terrain where traditional grounding is impossible. Designed for 100% duty-cycle reliability for ALE and digital modes during primary network backhaul failure.

3. RESILIENCE PROFILE: Constructed from heavy-wall 6061-T6 aircraft-grade aluminum — selected for its high strength-to-weight ratio and natural resistance to atmospheric corrosion. Wind load ratings are ASCE 7-10 derived and vary by model height; consult the Agency Hub for model-specific specifications. Engineered for a multi-decade service life, representing a permanent infrastructure improvement.

4. RECOMMENDATION: Procurement of Greyline assets to fulfill EMCOMM continuity mandates and support agency infrastructure hardening objectives.