Dropped Work Calls
Inconsistent signals interrupt critical business communication when you are on the road.
3G/4G/5G Connectivity
Nextivity Cel-Fi ROAM R41
Mobile Signal Booster
End mobile dead zones on the road. The Cel-Fi ROAM R41 delivers reliable cellular connectivity for cars, trucks, and 4WDs, ensuring your voice and data perform anywhere.
100+
Max Signal Gain (dB)
5G
Ready & Compatible
WAVE
App Controlled
The Problem
The Frustration of Mobile Dead Zones
Traveling outside metropolitan areas often results in dropped calls, slow data, and zero emergency connectivity.
No Navigation Data
Losing 4G/5G means losing live maps, traffic updates, or streaming services halfway through a trip.
Safety Risks
Being stranded without cell service turns a minor breakdown into a potential emergency.
How It Works
Intelligent Signal Amplification
The ROAM R41 actively captures weak signals, cleans them, and rebroadcasts them strongly inside your vehicle.
- 1
Donor Antenna Reception
A high-gain external antenna mounted on your vehicle captures the faint mobile network signals from distant towers.
- 2
IntelliBoost® Processing
The signal is fed into the R41 unit, where Nextivity's proprietary 4th-gen chip cleans and amplifies it without interference.
- 3
Internal Rebroadcast
An internal server antenna perfectly broadcasts the boosted 3G, 4G, or 5G signal directly to your phone.
- 4
Seamless Switching
Use the companion WAVE app to effortlessly switch the network operator being boosted as you cross regional boundaries.
Key Features
Unmatched Connectivity Features
Multi-Band Support
Compatible with a wide array of frequency bands ensuring it works smoothly on 3G, 4G, and DSS 5G networks.
Plug-and-Play Resilience
Designed for nomadic applications, it provides rapid setup and rugged durability under seats or in boots.
IntelliBoost 4th Gen
The industry's smartest processing chip guarantees enterprise-grade performance and zero network interference.
Carrier Selection
Easily switch the unit to boost Telstra, Optus, or Vodafone depending on which network has the best regional tower.
Low Profile Design
Its sleek, ribbed metal housing dissipates heat effectively while taking up minimal cabin space.
Legal & Approved
100% legal for use in Australia, unconditionally approved by local carriers and ACMA compliant.
FAQs
Frequently Asked Questions
Does the Cel-Fi ROAM R41 support 5G?
Yes, the R41 supports 5G Dynamic Spectrum Sharing (DSS), ensuring it is future-proofed alongside standard 3G and 4G networks.
Can it boost multiple networks at once?
No, it exclusively amplifies one network carrier (e.g., Telstra) at a time to comply with network protection rules. However, you can switch providers easily via the app.
Is the R41 legal to use in Australia?
Yes! Unlike cheap, illegal signal repeaters, the Cel-Fi system is completely legal stringently approved by Australian network operators.
Do I need a specialized antenna?
The system requires an external 'donor' antenna (like a bullbar whip) and an internal 'server' antenna. We supply and professionally install the entire kit.
Where is the main unit installed?
Thanks to its compact size, we typically install it discreetly under a seat, behind a trim panel, or in the boot to keep your cabin tidy.
Will this drain my car battery?
We install the system to run on your vehicle's accessory circuit or a dual-battery setup, so it will only draw power when needed, protecting your starter battery.
Ready to Protect Your Vehicle?
Professional Ghost-II installation in Adelaide by experienced auto electricians.