Boosting Mobile Signal for Better Mobile Coverage on the Road and on the Water
The Nextivity Cel Fi Roam R41 mobile signal booster lifts your phone signal inside your vehicle and keeps your mobile coverage steady when you move through areas with poor reception. It supports Telstra Optus and Vodafone and boosts 3G 4G and 5G DSS for stronger voice and data transmission on the road or water. The device uses the latest IntelliBoost chip to deliver industry leading signal gain and more reliable connectivity in remote areas and regional zones.
This smart signal repeater is built for nomadic travel and works in cars 4WDs trucks caravans RVs and boats. It replaces the older Cel Fi GO models and gives higher uplink power smoother data and better performance in weak signal zones. The Roam R41 runs from a 12V outlet and offers a true plug and play installation so you can set it up fast and get instant coverage improvement without complex wiring.
The compact frame fits under a seat or against a cabin wall and pairs with a donor antenna and a server antenna to amplify your cellular signal. This gives a stable link for calls streaming maps and messaging even when your phone sits close to zero bars. The Cel Fi Roam R41 is a reliable solution for staying connected in places where dropped calls and slow internet are common.
Key Features for the Cel Fi R41 Signal Booster:
- Boosts mobile signal for Telstra Optus and Vodafone
- Supports 3G 4G and 5G DSS for voice and data
- Replaces Cel Fi GO G31 and Cel Fi GO G41 models
- Delivers up to 100 dB of industry leading signal gain
- Uses the Nextivity IntelliBoost chip for reliable performance
- Works in cars 4WDs trucks RVs caravans and boats
- Improves mobile coverage in remote areas and poor reception zones
- Compact device with fast plug and play operation
- Supports 700L 850 900 1800 2100 2600 MHz plus Bands 20 and 26
- Switches between carriers through the WAVE App
- Built for nomadic travel and multi carrier use
Why Choose the Roam R41 Over the Cel Fi GO
The Roam R41 provides stronger uplink power which helps your phone push a clean signal back to the mobile network. This improves voice and data transmission in weak areas. The IntelliBoost chip offers more accurate boosting and lifts performance in fast changing signal zones. The repeater also gives better antenna isolation so the donor and server antennas can sit closer together during installation. These improvements deliver more stable mobile coverage and higher data speeds compared to the older Cel Fi GO range.
How the mobile signal booster works
The donor antenna gathers the outdoor cellular signal from your mobile network operator.
The Roam R41 amplifies that signal with focused gain for one selected carrier.
The server antenna broadcasts the improved signal inside your vehicle.
Your phone then receives a stronger and more reliable link for calls streaming maps and data.
This targeted boosting method prevents interference and allows the repeater to achieve its high 100 dB signal gain. It is the reason Cel Fi devices remain the only cellular repeaters approved by Telstra Optus and Vodafone.
5G DSS Support
The Roam R41 supports 5G DSS for Telstra Optus and Vodafone.
This technology blends 4G and 5G on the same frequency.
The WAVE App may not show active 5G boost yet your handset can still show a 5G icon after amplification.
Coverage depends on the carrier and region.
Where the Roam R41 Performs Best
- Coastal highways with patchy 4G
- Regional towns with weak indoor and in-cabin reception
- Remote areas with limited mobile signal
- Outback touring and extended 4WD trips
- Mobile work where phone signal is needed for fleet calls
- Boats and marine cabins where phones drop to one bar
- RV and caravan travel where data speeds often fluctuate
The device ensures reliable 3G 4G and 5G DSS connectivity and keeps voice and data stable in conditions where most phones lose service.
What You Need to Run the Roam R41
You need the R41 unit a donor antenna a server antenna and a 12V outlet.
Both antennas are required because your phone cannot supply a clean outdoor signal for the repeater to amplify.
Different antennas suit different setups such as bullbar mounts for touring or magnetic mounts for lighter vehicles.
CEL-FI ROAM R41 vs ROAM R41 Trucker Edge Pack
| Feature | ROAM R41 Smart Mobile Repeater (RPR-CF-00870) | ROAM R41 Trucker Edge Pack (RPR-CF-00990) |
|---|---|---|
| Core Device | ROAM R41 | ROAM R41 |
| Approved Networks | Telstra, Optus, Vodafone | Telstra, Optus, Vodafone |
| Boosts | 3G, 4G, 5G DSS | 3G, 4G, 5G NR Low Band |
| Max Gain | 100 dB | 100 dB |
| IntelliBoost Chip | Yes | Yes |
| Power Input | 12V only | 12V only |
| Use Case | Cars, 4WDs, caravans, RVs, boats | Trucks, 4WD touring, caravans, motorhomes, boats |
| External Donor Antenna Included | No | Yes – Blackhawk 4G Trucker Edge 95cm (698–2200 MHz) |
| Internal / Server Antenna | Yes | Yes |
| Installation | Plug and play | Plug and play |
| Antenna Isolation | Improved | Improved |
| Carrier Switching | WAVE App | WAVE App |
| Device Limit | Up to 20 devices | Up to 20 devices |
| In The Box | R41 unit, server antenna, 12V adapter, mounting hardware | R41 unit, server antenna, Blackhawk Trucker Edge antenna, 12V adapter, mounts |
In the box
- CEL-Fi ROAM R41
- Automobile Auxiliary Power Adapter (CLA)
- Server Antenna
- Mounting Hardware
- Ground Cabling
*Note: This device can ONLY be connected with a 12V auxiliary power outlet.
| 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 authorised operator PLMN-IDs | |
| Duplex Modes | FDD |
| # of Relay Bands (MHz max.) | 1 |
| Relay Bandwidth (MHz max.) | 20 |
| Output Downlink Power (All Bands) (dBm max.) | 0 |
| Output Uplink Power (Bands 5/8/20/26/28L) (dBm max.) | 22 |
| Output Uplink Power (Bands 1/3/7) (dBm max.) | 24 |
| System Gain (dBm max.) | 100 |
| Enterprise-Grade Echo Cancellation (dB min.) | 30 |
| Return Loss (dB typ.) | -8 |
FAQ
What signal improvement can you expect from the Roam R41?
Most vehicles see one to three bars of extra signal depending on outdoor strength and the antenna used. The 100 dB gain helps the device lift usable phone signal in areas where the phone alone receives almost nothing.
Can the Roam R41 boost more than one carrier at once?
No. It boosts one carrier at a time. This targeted method prevents interference and is a key reason it is approved by Telstra, Optus, and Vodafone.
Why is the Roam R41 more reliable in remote areas?
It has higher uplink power, a faster IntelliBoost chip, and stronger filtering across supported MHz bands. This keeps the boosted mobile signal steady even when the outdoor signal shifts as you move.
What is the difference between a donor and server antenna?
The donor antenna captures the signal from outside the vehicle.
The server antenna sends the amplified signal inside the cabin.
Both antennas are essential for the mobile coverage upgrade.
What donor antennas can be used?
| SKU | RPR-CF-00870 |
|---|---|
| Barcode # | 812037034183 |
| Brand | Cel-Fi Go |
| Shipping Weight | 0.8600kg |
| Shipping Width | 0.100m |
| Shipping Height | 0.080m |
| Shipping Length | 0.220m |
| Shipping Cubic | 0.001760000m3 |
Nextivity CEL-FI ROAM R41 Smart Mobile Repeater
More infoMake 4 payments of $224.75 over 8 weeks and get it now!
Calculate Shipping
Boosting Mobile Signal for Better Mobile Coverage on the Road and on the Water
The Nextivity Cel Fi Roam R41 mobile signal booster lifts your phone signal inside your vehicle and keeps your mobile coverage steady when you move through areas with poor reception. It supports Telstra Optus and Vodafone and boosts 3G 4G and 5G DSS for stronger voice and data transmission on the road or water. The device uses the latest IntelliBoost chip to deliver industry leading signal gain and more reliable connectivity in remote areas and regional zones.
This smart signal repeater is built for nomadic travel and works in cars 4WDs trucks caravans RVs and boats. It replaces the older Cel Fi GO models and gives higher uplink power smoother data and better performance in weak signal zones. The Roam R41 runs from a 12V outlet and offers a true plug and play installation so you can set it up fast and get instant coverage improvement without complex wiring.
The compact frame fits under a seat or against a cabin wall and pairs with a donor antenna and a server antenna to amplify your cellular signal. This gives a stable link for calls streaming maps and messaging even when your phone sits close to zero bars. The Cel Fi Roam R41 is a reliable solution for staying connected in places where dropped calls and slow internet are common.
Key Features for the Cel Fi R41 Signal Booster:
- Boosts mobile signal for Telstra Optus and Vodafone
- Supports 3G 4G and 5G DSS for voice and data
- Replaces Cel Fi GO G31 and Cel Fi GO G41 models
- Delivers up to 100 dB of industry leading signal gain
- Uses the Nextivity IntelliBoost chip for reliable performance
- Works in cars 4WDs trucks RVs caravans and boats
- Improves mobile coverage in remote areas and poor reception zones
- Compact device with fast plug and play operation
- Supports 700L 850 900 1800 2100 2600 MHz plus Bands 20 and 26
- Switches between carriers through the WAVE App
- Built for nomadic travel and multi carrier use
Why Choose the Roam R41 Over the Cel Fi GO
The Roam R41 provides stronger uplink power which helps your phone push a clean signal back to the mobile network. This improves voice and data transmission in weak areas. The IntelliBoost chip offers more accurate boosting and lifts performance in fast changing signal zones. The repeater also gives better antenna isolation so the donor and server antennas can sit closer together during installation. These improvements deliver more stable mobile coverage and higher data speeds compared to the older Cel Fi GO range.
How the mobile signal booster works
The donor antenna gathers the outdoor cellular signal from your mobile network operator.
The Roam R41 amplifies that signal with focused gain for one selected carrier.
The server antenna broadcasts the improved signal inside your vehicle.
Your phone then receives a stronger and more reliable link for calls streaming maps and data.
This targeted boosting method prevents interference and allows the repeater to achieve its high 100 dB signal gain. It is the reason Cel Fi devices remain the only cellular repeaters approved by Telstra Optus and Vodafone.
5G DSS Support
The Roam R41 supports 5G DSS for Telstra Optus and Vodafone.
This technology blends 4G and 5G on the same frequency.
The WAVE App may not show active 5G boost yet your handset can still show a 5G icon after amplification.
Coverage depends on the carrier and region.
Where the Roam R41 Performs Best
- Coastal highways with patchy 4G
- Regional towns with weak indoor and in-cabin reception
- Remote areas with limited mobile signal
- Outback touring and extended 4WD trips
- Mobile work where phone signal is needed for fleet calls
- Boats and marine cabins where phones drop to one bar
- RV and caravan travel where data speeds often fluctuate
The device ensures reliable 3G 4G and 5G DSS connectivity and keeps voice and data stable in conditions where most phones lose service.
What You Need to Run the Roam R41
You need the R41 unit a donor antenna a server antenna and a 12V outlet.
Both antennas are required because your phone cannot supply a clean outdoor signal for the repeater to amplify.
Different antennas suit different setups such as bullbar mounts for touring or magnetic mounts for lighter vehicles.
CEL-FI ROAM R41 vs ROAM R41 Trucker Edge Pack
| Feature | ROAM R41 Smart Mobile Repeater (RPR-CF-00870) | ROAM R41 Trucker Edge Pack (RPR-CF-00990) |
|---|---|---|
| Core Device | ROAM R41 | ROAM R41 |
| Approved Networks | Telstra, Optus, Vodafone | Telstra, Optus, Vodafone |
| Boosts | 3G, 4G, 5G DSS | 3G, 4G, 5G NR Low Band |
| Max Gain | 100 dB | 100 dB |
| IntelliBoost Chip | Yes | Yes |
| Power Input | 12V only | 12V only |
| Use Case | Cars, 4WDs, caravans, RVs, boats | Trucks, 4WD touring, caravans, motorhomes, boats |
| External Donor Antenna Included | No | Yes – Blackhawk 4G Trucker Edge 95cm (698–2200 MHz) |
| Internal / Server Antenna | Yes | Yes |
| Installation | Plug and play | Plug and play |
| Antenna Isolation | Improved | Improved |
| Carrier Switching | WAVE App | WAVE App |
| Device Limit | Up to 20 devices | Up to 20 devices |
| In The Box | R41 unit, server antenna, 12V adapter, mounting hardware | R41 unit, server antenna, Blackhawk Trucker Edge antenna, 12V adapter, mounts |
In the box
- CEL-Fi ROAM R41
- Automobile Auxiliary Power Adapter (CLA)
- Server Antenna
- Mounting Hardware
- Ground Cabling
*Note: This device can ONLY be connected with a 12V auxiliary power outlet.
| 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 authorised operator PLMN-IDs | |
| Duplex Modes | FDD |
| # of Relay Bands (MHz max.) | 1 |
| Relay Bandwidth (MHz max.) | 20 |
| Output Downlink Power (All Bands) (dBm max.) | 0 |
| Output Uplink Power (Bands 5/8/20/26/28L) (dBm max.) | 22 |
| Output Uplink Power (Bands 1/3/7) (dBm max.) | 24 |
| System Gain (dBm max.) | 100 |
| Enterprise-Grade Echo Cancellation (dB min.) | 30 |
| Return Loss (dB typ.) | -8 |
FAQ
What signal improvement can you expect from the Roam R41?
Most vehicles see one to three bars of extra signal depending on outdoor strength and the antenna used. The 100 dB gain helps the device lift usable phone signal in areas where the phone alone receives almost nothing.
Can the Roam R41 boost more than one carrier at once?
No. It boosts one carrier at a time. This targeted method prevents interference and is a key reason it is approved by Telstra, Optus, and Vodafone.
Why is the Roam R41 more reliable in remote areas?
It has higher uplink power, a faster IntelliBoost chip, and stronger filtering across supported MHz bands. This keeps the boosted mobile signal steady even when the outdoor signal shifts as you move.
What is the difference between a donor and server antenna?
The donor antenna captures the signal from outside the vehicle.
The server antenna sends the amplified signal inside the cabin.
Both antennas are essential for the mobile coverage upgrade.
What donor antennas can be used?
| SKU | RPR-CF-00870 |
|---|---|
| Barcode # | 812037034183 |
| Brand | Cel-Fi Go |
| Shipping Weight | 0.8600kg |
| Shipping Width | 0.100m |
| Shipping Height | 0.080m |
| Shipping Length | 0.220m |
| Shipping Cubic | 0.001760000m3 |
