146–174 MHz VHF 3 dB Roof-Mount Mobile Radio Antenna

The Motorola RAD4000ARB is a VHF roof-mount antenna designed to improve the communication coverage and performance of compatible Motorola mobile two-way radios operating between 146 and 174 MHz.

Featuring approximately 3 dB of gain, this antenna is intended for permanent vehicle-roof installation, where proper placement and an adequate metal ground plane can support dependable radio-frequency performance.

The RAD4000ARB is a radio-frequency antenna only and does not include integrated GPS capability. Radio frequency, mounting requirements, connector compatibility, and package contents should be confirmed before ordering.

Key Features

• VHF mobile radio antenna

• 146–174 MHz frequency range

• Approximately 3 dB gain

• Permanent roof-mount design

• Supports compatible Motorola mobile radios

• Designed to enhance mobile-radio coverage

• Black professional appearance

• No integrated GPS antenna

• Suitable for commercial and public-safety vehicles

VHF Frequency Coverage

The RAD4000ARB supports compatible mobile radios operating between 146 and 174 MHz. The radio’s programmed frequencies must fall within the antenna’s supported range for proper performance.

3 dB Gain

The antenna’s gain design can provide improved signal performance compared with a basic unity-gain antenna when it is correctly installed and matched to the radio system.

Permanent Roof Installation

Roof mounting places the antenna in an elevated and unobstructed position on the vehicle. Correct mounting location, grounding, cable routing, and connector installation are important for dependable operation.

Compatible Radio Applications

The RAD4000ARB is designed for selected Motorola VHF mobile radios, including compatible CM-series models such as the CM200. It may support additional Motorola mobile-radio platforms when the frequency range, connector, and installation requirements match.

Ideal Applications

• Public-safety vehicles

• Utility and service fleets

• Construction vehicles

• Transportation and delivery fleets

• Commercial service vehicles

• Municipal operations

• Agriculture and rural communications

• Industrial fleet communications

Professional Installation Recommended

The antenna should be installed by a qualified radio technician. Proper installation may require drilling, weather sealing, ground-plane evaluation, cable routing, connector termination, and antenna-system testing.

Package and Compatibility Notice

This listing is for the RAD4000ARB antenna configuration only. Included cable, connector, mounting hardware, and installation components can vary by package. The mobile radio, GPS antenna, installation tools, and professional installation services are not included unless specifically stated. Please confirm the complete configuration with Delmarva Communications before purchasing.

Why Choose the Motorola RAD4000ARB?

The RAD4000ARB provides a professional roof-mounted VHF antenna solution for compatible Motorola mobile-radio systems. Its 146–174 MHz coverage and gain design make it well suited for organizations that require dependable vehicle communications across wide service areas.