RFI CD51-68-50 450–520MHz Ground Independent Mopole™ Antenna – MBC Base (Flexible PVC Radiator)

The RFI CD51-68-50 Ground Independent Mopole™ Antenna is a heavy-duty UHF mobile antenna designed for professional two-way radio systems operating across the 450–520MHz frequency range. Engineered for commercial fleets, emergency services, utilities, mining, transport, agriculture, and industrial applications, it delivers reliable communications in demanding environments.

Featuring RFI's patented Ground Independent Mopole™ technology, a flexible PVC radiator, and a heavy-duty MBC mounting base, the CD51-68-50 provides dependable RF performance without relying on the vehicle body as a ground plane. This allows greater flexibility when selecting mounting locations while maintaining excellent communication coverage.

Built to withstand harsh operating conditions, the CD51-68-50 is an ideal solution for vehicles working both on and off the road.

Why Choose the RFI CD51-68-50?

Designed for professional fleet communications, the CD51-68-50 combines durability, installation flexibility, and dependable UHF performance.

Key Features

• Covers the 450–520MHz UHF frequency range
• Patented Ground Independent Mopole™ technology
• Flexible PVC radiator
• Heavy-duty MBC mounting base
• Omnidirectional radiation pattern
• Suitable for analogue and digital radio systems
• Performs without requiring a vehicle ground plane
• Weather and corrosion-resistant construction
• Built for demanding commercial environments
• Australian designed and manufactured

Ground Independent Mopole™ Technology

Unlike conventional mobile antennas, the CD51-68-50 delivers reliable performance without relying on the vehicle body as a conductive ground plane.

This enables installation on a wide variety of locations, including:

• Bull bars
• Mirror brackets
• Roof racks
• Canopies
• Toolboxes
• Service bodies
• Fibreglass vehicle panels
• Special-purpose vehicles

This flexibility makes the antenna ideal for modern fleet vehicles where traditional roof mounting is not always possible.

Flexible PVC Radiator

The antenna features a flexible PVC radiator engineered to withstand the harsh conditions encountered by commercial vehicles.

Benefits include:

• Excellent flexibility
• High resistance to impacts
• Handles constant vibration
• UV-resistant construction
• Weatherproof materials
• Long service life

Its flexible design helps protect the antenna from damage caused by branches, loading equipment, and low-clearance obstacles.

Reliable UHF Communications

Designed for operation across the 450–520MHz UHF frequency band, the CD51-68-50 is suitable for many licensed land mobile radio systems.

Ideal for:

• Commercial fleet communications
• Transport and logistics
• Utilities
• Civil construction
• Mining operations
• Emergency services
• Local government
• Security companies
• Industrial facilities
• Infrastructure maintenance

Its omnidirectional radiation pattern provides dependable communications while vehicles remain on the move.

Built for Commercial Fleets

The CD51-68-50 is engineered to deliver reliable performance in challenging working environments.

Suitable for:

• Heavy transport
• Utility service vehicles
• Construction equipment
• Mining vehicles
• Agricultural machinery
• Forestry operations
• Council fleets
• Emergency response vehicles
• Industrial maintenance fleets
• Government vehicles

Its rugged construction ensures reliable communications where operational downtime is not an option.

Heavy-Duty MBC Mounting Base

The antenna is supplied with a robust MBC mounting base, providing a secure and reliable installation for professional vehicle applications.

Benefits include:

• Strong mechanical mounting
• Reliable RF connection
• Long-term durability
• Suitable for heavy commercial vehicles
• Easy integration into fleet installations

The MBC base is trusted by fleet operators throughout Australia and New Zealand for its proven reliability.

Why Buy From Mobile Systems Limited?

Mobile Systems Limited supplies professional mobile radio systems and antenna solutions throughout New Zealand.

Our experienced team provides:

• Fleet communication system design
• Vehicle antenna selection
• Professional installations
• Radio programming
• Antenna testing and VSWR optimisation
• Fleet communication upgrades
• Ongoing servicing and technical support

Whether you're fitting out one vehicle or an entire fleet, we'll help you select the right antenna solution for dependable long-term performance.

Frequently Asked Questions

What frequencies does the CD51-68-50 support?

The antenna operates across the 450–520MHz UHF frequency range, making it suitable for many licensed analogue and digital radio systems.

What is Ground Independent Mopole™ technology?

Ground Independent Mopole™ technology enables the antenna to perform efficiently without relying on the vehicle body as a ground plane, giving installers greater flexibility when selecting a mounting location.

What are the benefits of the flexible PVC radiator?

The flexible PVC radiator provides excellent resistance to impacts, vibration, UV exposure, and harsh weather, making it ideal for commercial, industrial, and off-road vehicles.

Does the antenna include a mounting base?

Yes. The CD51-68-50 is supplied with a heavy-duty MBC mounting base for professional vehicle installations.

Is the antenna suitable for digital radio systems?

Yes. It is compatible with both analogue and digital UHF radio systems operating within the 450–520MHz frequency range.

Can Mobile Systems Limited install this antenna?

Absolutely. Mobile Systems Limited supplies, installs, tests, tunes, and supports RFI antenna systems and complete two-way radio solutions for commercial, industrial, and government customers throughout New Zealand.