Cel-Fi ROAM 41 R41 Smart Mobile Repeater 3G 4G 5G NR Low Band

Cel-Fi ROAM 41 R41 Smart Mobile Repeater 3G 4G 5G NR Low Band

The CEL-FI ROAM 41 is a plug-and-play smart mobile repeater featuring Nextivity's 4th generation IntelliBoost chip, supporting 3G, 4G, and 5G NR Low Band across Telstra, Optus, Vodafone, and MVNO networks. Approved by all three major Australian carriers and ACMA exempt, it is designed for in-vehicle use across cars, trucks, motorhomes, caravans, and boats, with automatic band selection and network switching via the WAVE app. IP54 rated and backed by a 4-year warranty.

Product overview

The Cel-Fi ROAM R41 is a vehicle mobile signal booster designed as a plug-and-play replacement for the GO G31 and G32 mobile systems. Built on Nextivity's 4th generation IntelliBoost chip, it delivers channelised coverage for specific mobile network operator signals across Telstra, Optus, Vodafone, and MVNO networks, supporting up to 20 devices simultaneously per network. The R41 is network selectable via the WAVE app, allowing the user to switch between Telstra, Optus, and Vodafone at any time without manual reconfiguration.

Automatic band selection removes the need to manually choose between 3G, 4G, or 5G NR Low Band. The R41 detects and selects the best available signal band from the chosen carrier in the current location, optimising voice and data performance without user intervention. Supported frequency bands include 700L, 850, 900, 1800, 2100, 2600MHz, plus Band 20 and Band 26. Note that the 700MHz band is not supported on the Vodafone network. 5G NR Low Band is primarily used in regional and rural areas. Metropolitan areas rely on 5G Mid Band, which is not supported by this device.

The low-profile design at 79.8 x 44 x 170.7mm and 490 grams allows discreet installation in tight vehicle spaces, and the rugged frame supports reliable operation across demanding environments. The IP54 rating provides protection against dust and water spray in exposed installation positions. An external antenna is required for operation and is not included with this unit. Compatible external 5G ready vehicle antenna options are listed below.

Features and benefits

4th generation Nextivity IntelliBoost chip: The latest Nextivity proprietary IntelliBoost chip delivers channelised signal boosting specifically matched to the selected mobile network operator, providing stronger and more consistent performance than broadband amplifiers.

5G NR Low Band, 4G, and 3G support: Supports 5G NR Low Band, 4G, and 3G across Telstra, Optus, Vodafone, and MVNO networks, covering the frequency bands used in regional and rural Australian coverage areas.

Network selectable via WAVE app: The user can select which carrier network the R41 boosts and change the selection at any time via the WAVE app, providing full flexibility when travelling across areas served by different carriers.

Automatic band selection: Automatically detects and selects the best available signal band from the chosen carrier in the current location, removing the need to manually switch between 3G, 4G, and 5G NR Low Band modes.

Carrier and ACMA approved: Approved by Telstra, Optus, and Vodafone for use on their networks in Australia, and ACMA exempt, ensuring full regulatory compliance without risk of carrier interference or signal rejection.

Supports up to 20 devices per network: Each network configuration on the R41 supports up to 20 connected devices simultaneously, making it suitable for fleet and group travel applications.

Plug-and-play installation: Designed for installation within minutes without specialist tools or permanent wiring, using the included automobile auxiliary power adapter for 11.5 to 15V DC input.

IP54 rated rugged enclosure: The rugged frame with IP54 ingress protection provides resistance to dust and water spray, supporting reliable operation in exposed vehicle and marine environments.

Low-profile compact design: At 79.8 x 44 x 170.7mm and 490 grams, the R41 installs discreetly in tight vehicle spaces including dashboards, under-seat areas, and cargo compartments.

Suitable replacement for GO G31/G32: Designed as a direct upgrade path for existing Cel-Fi GO G31 and G32 mobile system users, providing improved performance and expanded band support.

Compatible external 5G ready vehicle antennas

An external antenna is required for operation and is sold separately. The following 5G ready vehicle antennas are compatible with the Cel-Fi ROAM R41:

• 91cm EXPLORER 6dBi Medium Duty Spring with Removable Whip
• 122cm and 42cm EXPLORER 7.5/3.0dBi Twin Whip Medium Duty Spring with Removable Whips
• 89cm RFI CD8195 6.5dBi Standard Duty Spring with Fixed Whip
• 93cm RFI CDR8195 6.5dBi Medium Duty Spring with Removable Whip
• 97cm RFI CDQ8195 6.5dBi Heavy Duty Spring with Removable Whip
• 114cm RFI CD8197 7.5dBi Standard Duty Spring with Fixed Whip
• 121cm RFI CDQ8197 7.5dBi Heavy Duty Spring with Removable Whip

What's in the box

• Cel-Fi GO ROAM R41 smart mobile repeater
• Automobile auxiliary power adapter (CLA)
• Internal server antenna
• Mounting hardware
• Ground cabling

Technical specs

Frequently asked questions

Does the CEL-FI ROAM 41 include an external antenna?
No. The CEL-FI ROAM 41 is sold as a standalone unit and does not include an external antenna. A compatible 5G ready vehicle antenna is required for operation and must be purchased separately. Contact us for guidance on the correct external antenna for your vehicle and application.

What is the difference between 5G NR Low Band and 5G Mid Band?
5G NR Low Band operates on lower frequency spectrum and is primarily used in regional and rural areas of Australia to provide broader geographic coverage. 5G Mid Band operates on higher frequencies and provides faster speeds in metropolitan areas. The Cel-Fi ROAM R41 supports 5G NR Low Band only, as Cel-Fi GO devices are generally not required in metropolitan areas where 5G Mid Band is available.

Can the CEL-FI ROAM 41 be used on Vodafone with the 700MHz band?
No. The 700MHz band is not supported on the Vodafone network with the Cel-Fi ROAM R41. It is supported on Telstra and Optus networks. Contact us for further guidance on supported bands for your specific carrier before purchasing.

Is the CEL-FI ROAM 41 a suitable replacement for the GO G31 or G32?
Yes. The R41 is designed as a direct upgrade path for existing Cel-Fi GO G31 and G32 mobile system users, providing improved performance through the 4th generation IntelliBoost chip and expanded band support including 5G NR Low Band.

How does automatic band selection work on the CEL-FI ROAM 41?
The R41 automatically detects and selects the best available signal band from the chosen carrier network in the current location, switching between 3G, 4G, and 5G NR Low Band without any manual input from the user. This ensures the strongest possible connection is maintained as signal conditions change during travel.