RFI 450-520MHz Ground Independent Mopole - Threaded Stud (Flexible PVC Radiator)- CD51-68-70
$92.72
GST Inclusive. Discounts and Shipping calculated at checkout.
Quantity
Pickup available from the Mobile Systems Showroom: 1/14 Portside Drive, Mount Maunganui. We will notify you when your order is ready for collection.
In stock, ready to be shipped
RFI CD51-68-70 450–520MHz Ground Independent Mopole Antenna – Threaded Stud (Flexible PVC Radiator)
The RFI CD51-68-70 is a rugged UHF mobile antenna designed for professional two-way radio systems operating across the 450–520MHz frequency range. Featuring RFI's proven Ground Independent Mopole technology and a flexible PVC radiator, this antenna delivers reliable communications while standing up to the harsh conditions experienced by commercial fleets. Threaded stud mount, cable and connector sold separately.
Overview
Unlike traditional quarter-wave antennas, the CD51-68-70 does not rely on a vehicle's metal body to provide a ground plane. This allows it to maintain excellent performance when installed on bull bars, mirrors, roof racks, canopies, service bodies, and other non-traditional mounting locations.
The flexible PVC radiator provides additional protection against impacts, making it an excellent choice for vehicles operating in forestry, construction, mining, agriculture, utilities, and transport.
Key Features
- Covers the full 450–520MHz UHF band means one antenna serves the whole range, for installers working across multiple licensed channels.
- Patented Ground Independent Mopole technology means reliable performance from bull bars, mirror brackets, canopies, and other non-standard mounting positions.
- Flexible PVC radiator means it absorbs impacts from low branches and loading equipment without permanent damage.
- Threaded stud mounting means it fits a wide range of compatible RFI antenna bases and heavy-duty mounting systems.
- Suitable for licensed UHF radio systems means dependable performance for professional two-way radio fleets.
- Weather and corrosion-resistant construction means dependable performance in demanding outdoor conditions.
Applications
- Transport and logistics
- Utilities and civil construction
- Forestry, agriculture, and mining operations
- Emergency services and local government
- Security and industrial facilities
What's in the Box
- 1 x RFI CD51-68-70 Mopole antenna (flexible PVC radiator), threaded stud mount
- Not included: coaxial cable and connector, sold separately
Compatible Mounting Brackets
The threaded stud is compatible with a range of generic mounting brackets, as well as compatible RFI antenna bases. MSL stocks:
- GME MB024 Right-Angle Bullbar Bracket
- GME Wrap-Around Bullbar Bracket
- GME MB403SS Universal L-Bracket
Complete Your Setup
This antenna needs a coaxial cable and connector to suit your specific install. Talk to us and we'll help you choose the right length and connector type.
Key Specifications
| Brand | RFI |
| Model | CD51-68-70 |
| Frequency range | 450–520MHz |
| Gain | 4dB over a 1/4 wave whip |
| Tuned bandwidth / VSWR | 13MHz at <1.5:1, field-tuneable using supplied chart |
| Power handling | 50W |
| Whip length | 360mm |
| Whip material | Copper braid element in flexible nylon tubing |
| Mounting | Threaded stud |
| Cable and connector | Not included, sold separately |
Spec sheet PDF linked below may be for the CD50 (stainless whip) family rather than CD51 (PVC whip) specifically; please confirm with us if you need CD51-specific diagrams.
Download the installation sheet (PDF)
Other Options in This Series
Need a mount with an MBC base instead? See CD51-68-50 (PVC whip, MBC base, no cable).
Video
No product video currently available for this model.
Ground Independent Performance
The CD51-68-70 is designed to perform consistently without relying on the vehicle body as a ground plane, which allows installation on bull bars, mirror brackets, roof racks, canopies, toolboxes, service bodies, fibreglass panels, and other special purpose vehicles.
Why Buy From Mobile Systems Limited?
Mobile Systems Limited supplies professional mobile radio and antenna solutions to businesses throughout New Zealand. Our experienced team provides:
- Mobile radio system design
- Fleet antenna selection
- Professional vehicle installations
- Antenna testing and tuning
- Radio programming
- Fleet communication upgrades
- Ongoing servicing and technical support
Whether you're fitting out a single vehicle or managing a nationwide fleet, we'll recommend the right antenna solution for reliable long-term performance.
Frequently Asked Questions
What frequencies does the CD51-68-70 support?
The antenna operates across the 450–520MHz UHF frequency range, making it suitable for many licensed UHF radio systems.
What is Ground Independent Mopole technology?
Ground Independent Mopole technology allows the antenna to perform effectively without relying on the vehicle body as a ground plane, providing greater flexibility when selecting mounting locations.
What are the advantages of the PVC radiator?
The flexible PVC radiator helps protect the antenna from impacts, vibration, and harsh environmental conditions, making it ideal for commercial and off-road vehicles.
Does this antenna include a cable and connector?
No. Compatible mounting brackets are listed above, but coaxial cable and connector are sold separately.
Does the antenna fit standard RFI mounting bases?
Yes. The threaded stud design is compatible with a range of RFI antenna bases and mounting solutions, as well as the generic bullbar brackets linked above.
Can Mobile Systems Limited install this antenna?
Yes. We supply, install, tune, and test RFI antennas and complete two-way radio systems for commercial, industrial, and government customers throughout New Zealand.
Specifications
RFI 450-520MHz Ground Independent Mopole - Threaded Stud (Flexible PVC Radiator)- CD51-68-70
$92.72