Cellular Coverage Anywhere Life Takes You

*Note: This device can ONLY be connected with a 12V auxiliary power outlet. This product enables the ROAM R41 to be run from 24V vehicles.

The CEL-FI ROAM R41 boasts enterprise-grade performance combined with a user-friendly installation design, making it incredibly easy to set up and power on. Regardless of whether you're in a car, truck or RV, this compact solution keeps you connected wherever you roam. Its low-profile design enables discreet installation under any seat, while its rugged frame ensures durability, enhancing both productivity and safety for individuals and mobile devices alike.


Nextivity IntelliBoost Chip in CEL-FI ROAM R41
Equipped with the cutting-edge 4th generation Nextivity IntelliBoost chip, ROAM R41 features advanced technology utilised in Nextivitys enterprise cellular coverage solutions. This chip delivers unparalleled signal gain, guaranteeing that you can always make calls, send texts, enjoy your favourite music, and stay on the right route while on the road. Offering reliable 3G, 4G and 5G connectivity within vehicles, including fleet vehicles, and boats, the CEL-FI ROAM R41 is the ultimate solution to address poor coverage issues and enable dependable calling, texting, and streaming while on the move.




  • Ideal for boosting mobile signal in a car, van, 4WD, truck, motorhome or caravan.
  • Support for 3G, 4G and 5G Dynamic Spectrum Sharing (DSS)
  • Carrier switchable between Telstra, Optus and Vodafone (Optus and Vodafone support due early October – can be performed via WAVE App)
  • Suitable replacement for CEL-FI GO G31 Mobile Signal Booster
  • Supports 700L/850/900/1800/2100/2600 + Band 20 & 26
  • Latest 4th generation Nextivity proprietary IntelliBoost chip delivers channelised coverage for specific mobile network operator signals
  • Ease of installation with plug-and-play operation

Supports 5G DSS on Telstra, Optus and Vodafone

This is a type of 5G that layers both 4G and 5G on top of each other sharing the same frequency. The WAVE App will not display 5G is being boosted, but your handset will have boosted 5G signal and a 5G icon. May not be available in all areas on all bands.


Setting up ROAM R41 is a breeze with its plug-and-play operation, allowing you to improve connectivity in any car, van, truck, caravan or RV within minutes.

The system’s low-profile design allows you to install it discretely under any seat, while its rugged frame offers trusted durability, so people and crews can keep their connection – improving productivity and safety.

ROAM R41 also supports carrier switching through the Nextivity WAVE App for iOS and Android devices.

Download CEL-FI Wave on the Apple Store Get CEL-FI Wave App from Google Play Store

Typical setup of a CEL-FI ROAM R41 in a vehicle


Pulse Larsen 4G Magnetic Antenna

Pulse Larsen 4G Magnetic Antenna

Pulse is proud to introduce the SLPT (Shadow Low Profile Transit) product line for Public Safety, WLAN, LTE and 3G/4G/5G applications.


  • 4.5dB gain for 698-960 MHz
  • 5.6dB gain for 1710-2400 MHz
  • 4dB gain for 2500-2700 MHz
  • Whip length only 6.4cm
  • Operating Temperature of -40 ~ +85°C

These rugged IP67 weatherproof, aesthetically pleasing antennas provide a smaller, slimmer option without sacrificing superior performance. This magnetic antenna supports all mobile carriers and is ideal for vehicle and M2M applications. 3.5-metre cable.




Downlink (MHz)

Uplink (MHz)

Max. Relay BW (MHz)

1 2110-2170 1920-1980 20
3 1805-1880 1710-1785 20
5 869-894 824-849 20
7 2620-2690 2500-2570 20
8 925-960 880-915 15
20 791-821 832-862 20
26 859-894 814-849 20
28L 758-788 703-733 20
Australian Networks Telstra, Optus & Vodafone


Frequency Bands 1/3/5/7/8/20/26/28L
Relay Channel Bandwidths (MHz) 5/10/15/20
Networks 3G/4G/5G
Network Protocols WCDMA/LTE/DSS
Network Selection Automatically (MyWave App set to “Following”)
Configured to authorized operator PLMN-IDs
Duplex Modes FDD
# of Relay Bands 1MHz max.
Relay Bandwidth  20MHz max.
Output Downlink Power (All Bands)  0dBm max
Output Uplink Power (Bands 5/8/20/26/28L)  22dBm max.
Output Uplink Power (Bands 1/3/7)  24dBm max.
System Gain 100dBm max.
Enterprise-Grade Echo Cancellation 30dB min.
Return Loss (dB typ.) -8dB typ.


Donor RF Connector SMA (f)
Server RF Connector SMA (f)
DC Input 5.5 x 2.5 mm (f) Barrel
Device Setup Bluetooth for WAVE App
Power & System Status Bi-color LED (Green/Red)
Factory Debug only USB 2.0 Micro-B
System Management & SW Updates WAVE App for iOS 11.0 or later
WAVE App for Android
Band Selection MyWAVE App for iOS 11.0 or later
MyWave App for Android

Power Supply

Power Consumption (W) max. 18
Input Voltage (VDC max.) 12
Input Current (A max.) 1.5
Power Supply Plug Automobile Auxiliary Power
Power Supply Cable 1mm2 | 18 AWG
Power Supply Cable Length (m (ft)) 5m (16.3ft)


Operating Temperature °C (°F) 0 to 60°C (32 to 140°F)
Storage Temperature °C (°F) -35 to 70°C (-31 to 158°F)
Heat Dissipation Passive Convection
Surface Temperature °C (°F) max. at ambient 44°C (111.2°F)
Non-condensing Humidity 0 to 95%
Ingress Protection Rating IPX0

Mechanical & Packaging

Main Unit Dimensions 170.2 x 78.7 x 43.2mm | 6.7 x 3.1 x 1.7in
Main Unit Weight 0.49KG | 1.08lbs
Model # R41-YB-004
Brand Nextivity
Shipping Weight 1.3600kg
Shipping Width 0.220m
Shipping Height 0.900m
Shipping Length 0.100m
Shipping Cubic 0.019800000m3

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