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BS150U Series (Unity-Gain VHF)

Configurable Unity-Gain VHF Base Station Antenna


The BS150U Series is a unity-gain VHF base station antenna offered in six 6 MHz configurations across 144–174 MHz for fixed radio sites.

Key Features

  • Matches assigned channels with six tuned 6 MHz configurations.
  • Maintains broad elevation coverage through a 75° vertical beam.
  • Handles up to 250 W for base-station or repeater equipment.
  • 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

Six Tuned VHF Configurations. One Base Station Platform.

The BS150U Series provides a common unity-gain antenna platform for fixed VHF systems across 144–174 MHz. Six model configurations divide the range into 6 MHz operating segments.

Configuration-Level Selection: A, B, BC, C, D, and E configurations allow the antenna to be matched to the required portion of the VHF band instead of treating 144–174 MHz as one untuned range.

Broad Site Coverage: The unity-gain pattern and 75° vertical beam distribute coverage around fixed sites with varying endpoint elevations.

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

Power Handling: Each configuration handles up to 250 W for base station and repeater equipment.

Ideal Applications

  • 144–174 MHz VHF networks
  • Base station and repeater sites
  • Pole- and mast-mounted radio infrastructure

Example Model Configurations: BS150U-A, BS150U-B, BS150U-BC, BS150U-C, BS150U-D, BS150U-E

Key Specifications

Feature Specification
Technology VHF LMR
Frequency

VHF LMR: 144-174 MHz in 6 MHz configurations

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 64 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: <1.5:1 across a 6 MHz configuration

Maximum Input Power

VHF LMR: 250 W

Environmental Rating / Qualifications

Wind rating: 125 mph; 19.8 lb lateral load; 0.29 ft² flat-plate equivalent

Models & Configurations

Model / Configuration Configuration Details
BS150U-A 144-150 MHz; Unity gain
BS150U-B 150-156 MHz; Unity gain
BS150U-BC 153-159 MHz; Unity gain
BS150U-C 156-162 MHz; Unity gain
BS150U-D 162-168 MHz; Unity gain
BS150U-E 168-174 MHz; Unity gain

Tech Documents & Resources

bS150u-data-sheet

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