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White fiberglass vertical whip antenna about 76 inches long with N female connector at base

Laird Techologies

Laird Techologies FG4505 omni base 5 dBd 450-470 MHz

SKU CH-1Y3C-09MZD

Omnidirectional base-station antenna covering 450-470 MHz with 5 dBd gain and a 76-inch fiberglass radome rated for 100 mph winds

  • Omnidirectional coverage across the 450-470 MHz band
  • 5 dBd gain focuses signal in the horizontal plane
  • DC ground lightning protection safeguards connected equipment
  • 100 mph wind rating ensures durability in extreme conditions
  • 76 in fiberglass radome with UV coating resists environmental wear

Laird FG4505 omni base antenna

The Laird Technologies FG4505 is a fiberglass omnidirectional base station antenna built for land-mobile radio systems operating between 450 MHz and 470 MHz. Its collinear design is enclosed in high-density fiberglass with an ultraviolet-inhibiting coating for durability in extreme conditions. The antenna delivers 5 dBd gain with vertical polarization and a maximum VSWR of 2.0:1. An N Female connector provides the RF interface.

5 dBd gain over 450-470 MHz

The single specification that decides fit is the 5 dBd gain across the 450-470 MHz band. This gain figure determines the effective radiated power and horizontal coverage pattern for the intended service. The antenna handles up to 100 W of input power and presents a maximum VSWR of 2.0:1 across the band. DC-ground lightning protection is integrated into the base.

Suits fixed base stations needing omnidirectional

This antenna suits operators deploying fixed base stations that require omnidirectional horizontal coverage in the 450-470 MHz range. The 76-inch fiberglass radome and 4 lb weight require a sturdy mast and the supplied mounting hardware is not included. Buyers needing directional gain, a different frequency band, or an integrated jumper cable should look at other models.

Highlights

  • Omnidirectional coverage across the 450-470 MHz band
  • 5 dBd gain focuses signal in the horizontal plane
  • DC ground lightning protection safeguards connected equipment
  • 100 mph wind rating ensures durability in extreme conditions
  • 76 in fiberglass radome with UV coating resists environmental wear

Specifications

BrandLaird Technologies

Questions about this item

What does the 5 dBd gain deliver when the antenna is mounted on a real base station?

The 5 dBd (7.15 dBi) collinear design focuses energy in the horizontal plane, extending line-of-sight coverage for 450–470 MHz land-mobile systems.

How does the N-female connector and 2.0 : 1 VSWR limit the installation?

The N-female connector accepts standard 50 Ω coaxial cable, and the 2.0 : 1 maximum VSWR keeps reflected power low across the 450–460 MHz band.

What mounting hardware and clearances does the 76-inch fiberglass radome require?

The 76-inch, 4 lb fiberglass whip uses a “cold” tuned sleeve that carries no RF current, so it can be clamped to any conductive mast without a separate grounding kit.

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