RFI CD61-4552-53 450–520MHz Broadband Ground Independent Mopole™ Antenna – MBC Base with 5m Cable

The RFI CD61-4552-53 Broadband Ground Independent Mopole™ Antenna is a premium UHF mobile antenna engineered for professional two-way radio systems operating across the 450–520MHz frequency range. Designed for commercial fleets, emergency services, utilities, mining, transport, and industrial applications, it delivers outstanding broadband performance without requiring field tuning.

Featuring RFI's patented Ground Independent Mopole™ technology, a flexible moulded whip, heavy-duty MBC mounting base, and 5-metre low-loss coaxial cable, the CD61-4552-53 provides a complete antenna solution for reliable mobile communications in demanding environments.

Its broadband design makes it ideal for organisations operating across multiple UHF frequencies, ensuring dependable performance today while supporting future network changes.

Why Choose the RFI CD61-4552-53?

Designed for professional fleet installations, the CD61-4552-53 combines rugged construction with exceptional RF performance.

Key Features

• Covers the 450–520MHz UHF frequency range
• Broadband operation with no tuning required
• Patented Ground Independent Mopole™ technology
• Flexible moulded whip for maximum durability
• Heavy-duty MBC mounting base
• Supplied with 5 metres of low-loss coaxial cable
• Omnidirectional radiation pattern
• Suitable for analogue and digital radio systems
• Performs without requiring a vehicle ground plane
• Weather and corrosion-resistant construction
• Australian designed and manufactured

Broadband Performance

The CD61-4552-53 is designed to provide reliable communications across the entire 450–520MHz frequency range without requiring field tuning.

Benefits include:

• Supports multiple operating frequencies
• Ideal for multi-channel radio networks
• Simplifies fleet installations
• Reduces maintenance requirements
• Consistent RF performance across the UHF band
• Future-ready for evolving communication systems

This makes it an excellent choice for organisations operating large vehicle fleets or multiple radio networks.

Ground Independent Mopole™ Technology

Unlike conventional mobile antennas, the CD61-4552-53 performs efficiently without relying on the vehicle body as a ground plane.

This provides greater flexibility when mounting the antenna on:

• Bull bars
• Mirror brackets
• Roof racks
• Canopies
• Toolboxes
• Service bodies
• Fibreglass vehicle panels
• Specialist commercial vehicles

The result is reliable communications from a wider range of installation locations.

Flexible Moulded Whip

The flexible moulded whip has been engineered to withstand the harsh conditions experienced by commercial vehicles.

Advantages include:

• Excellent impact resistance
• High flexibility
• Resistant to vibration
• UV and weather resistant
• Long service life
• Low maintenance design

Its robust construction makes it particularly well suited to vehicles operating in forestry, mining, construction, agriculture, and off-road environments.

Supplied with 5 Metres of Cable

The CD61-4552-53 is supplied complete with 5 metres of low-loss coaxial cable, providing flexibility for professional installations across a wide variety of vehicles.

Suitable for:

• Passenger vehicles
• Utes
• Heavy trucks
• Utility service vehicles
• Agricultural machinery
• Construction equipment
• Mining vehicles
• Commercial fleet vehicles

The generous cable length allows for clean cable routing while helping to maintain optimum RF performance.

Designed for Professional Radio Networks

Operating across the 450–520MHz UHF frequency range, the antenna is suitable for many licensed analogue and digital land mobile radio systems.

Ideal applications include:

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

Its omnidirectional radiation pattern delivers consistent communications while vehicles remain on the move.

Built for Commercial Fleets

The CD61-4552-53 is designed for continuous operation in demanding environments where reliability is essential.

Ideal for:

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

Its rugged construction ensures dependable communication when your business depends on it.

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 installation
• 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 choose the right antenna solution for reliable long-term performance.

Frequently Asked Questions

What frequencies does the CD61-4552-53 support?

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

Does the antenna require tuning?

No. The broadband design provides reliable performance across the entire operating frequency range without requiring field tuning.

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, providing greater flexibility when selecting a mounting location.

What are the benefits of the flexible moulded whip?

The flexible moulded whip offers excellent resistance to impacts, vibration, UV exposure, and harsh weather, making it ideal for commercial and off-road vehicles.

Does the antenna include cable?

Yes. The CD61-4552-53 is supplied complete with an MBC mounting base and 5 metres of low-loss coaxial cable, providing a complete antenna solution for professional installation.

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.