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BS100U (Unity-Gain VHF)

Unity-Gain VHF Base Station Antenna


The BS100U is a unity-gain omnidirectional VHF base station antenna covering 75–140 MHz for fixed-site radio systems.

Key Features

  • Covers 75–140 MHz with unity-gain omnidirectional performance.
  • Maintains broad elevation coverage through a 75° vertical beam.
  • Handles up to 250 W through a standard N-female connection.
  • Helps reduce intermodulation with welded and soldered copper-alloy elements.
  • Installs on poles or masts with optional BSMNT2 hardware.

Customization: Cable type, cable length, and connectors can be configured for specific installation requirements.

Product Description

The BS100U covers 75–140 MHz through one omnidirectional RF path, providing broad VHF coverage for fixed base station and repeater sites.

Broad Vertical Pattern: Unity gain and a 75° vertical beam distribute signal around the site without concentrating coverage into a narrow elevation pattern.

High-Power Operation: A 250 W maximum power rating accommodates high-power fixed radio equipment through the standard N female interface.

Outdoor Construction: The 1 in (2.54 cm) UV-inhibited fiberglass radome and epoxy-coated aluminum sleeve carry a 125 mph (201 km/h) wind rating.

Mast Installation: The optional BSMNT2 kit provides compatible clamp-style hardware for pole and mast mounting.

Ideal Applications

  • VHF base station sites
  • Fixed radio repeaters
  • Pole- and mast-mounted VHF infrastructure
Key Specifications

Feature Specification
Technology VHF LMR
Frequency

VHF LMR: 75-140 MHz

Gain

VHF LMR: Unity gain

Configuration 1 RF feed
Connector / Cable

VHF LMR connector: N female standard; optional pigtail

Mounting Vertical pole or mast installation with a bracket kit
Dimensions Up to 96 in long; 1.00 in radome diameter; 1.35 in sleeve diameter; 10 in sleeve length
Material

Housing: White UV-resistant fiberglass, 1.00 in diameter

Base: Epoxy-coated heavy-wall aluminum sleeve

VSWR

VHF LMR: <2:1

Maximum Input Power

VHF LMR: 250 W

Environmental Rating / Qualifications

Wind rating: 125 mph; 29.7 lb lateral load; 0.44 ft² flat-plate equivalent

Models & Configurations

Model / Configuration Configuration Details
BS100U-XX 75-140 MHz; Unity gain; Specify center frequency when ordering

Tech Documents & Resources

BS100Umm

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