Cel‑Fi GO G41 / G51 Smart Repeater – Building 4G / 5G
Cel‑Fi is the only carrier‑approved mobile booster in Australia.
The Cel‑Fi GO G41 and the newer G51 fix weak indoor mobile coverage by legally boosting a single, user‑selectable carrier (Telstra, Optus or Vodafone), with system gain up to 100 dB.
The G51 also brings true mid‑band 5G NR (3.5 GHz) indoors and adds Ethernet for remote monitoring.
Product Description
The Cel‑Fi GO G41 / G51 (Building) is designed for offices, schools, apartments, retail, warehouses and other sites with poor indoor reception.
You can set the unit to boost Telstra (approved), Optus (approved) or Vodafone (approved) and switch carriers later if needed. Telstra and Optus only units. Includes the amplifier module and 240 V power supply.
Donor and coverage antennas are required.
Please note: Telstra and Optus can be switched via the wave app if changing network carriers. If wishing to improve the Vodafone network these units are a separate device covering only the Vodafone network and cannot be switched to Telstra or Optus due to the band spectrum used by Vodafone.
Call ARCS today on 1300 638 311
What’s included
Cel‑Fi GO G41 or G51 Smart Repeater
240 V mains power supply
Antennas are not included. Every install requires:
1 × external donor antenna, and
1–4 internal coverage antennas per repeater (final count is set by a site survey based on area and measured signal strength).
Key features - G51
Mid‑band (3.5 GHz) 5G NR with 100 MHz channel bandwidth
Dual‑band relay to extend 4G alongside 5G NR
Up to 100 dB of system gain to overcome tough building losses
RJ45 Ethernet for remote management via Nextivity WAVE Portal/App
Powered by Nextivity’s 4th‑gen IntelliBoost™ for industry‑leading, network‑safe performance
These are operator‑approved and unconditionally network‑safe.Self‑optimizing setup — no manual configuration required
3GPP compliant: Release 17 (TS 38.106 Rel 17)
Operator‑approved, unconditionally network‑safe with No Noise Guarantee
Monitoring & management through Nextivity WAVE Portal and App
G41 vs G51: Which should I choose?
G41 – Great for boosting 4G + 5G bands within the old 3G spectrum, small–medium sites; single‑operator, app control/WAVE Portal.
G51 – Best for 5G dedicated band 78 + 4G medium–large sites; higher output power, supports more internal antennas and adds Ethernet remote management.
A site survey will assist in helping to determine the most suitable unit for your site
Where Cel‑Fi GO fits best
Government buildings; agricultural settings; parking garages
IoT & M2M (machine‑to‑machine) deployments
Small manufacturing operations
Single‑ or multi‑level commercial properties
Remote or rural locations
Large homes
Antenna pairing
Pair the GO G51 with CEL‑FI Omni Dome ceiling antennas or Wideband Panel wall antennas for in‑building coverage. For donor (outdoor) signal, use Wideband Directional or higher‑gain LPDA‑R antennas where outside signal is weak.
Site survey - From $800
A professional 4G/5G Site Survey maps existing signal, models donor/coverage antenna placement, and specifies the optimal hardware (repeaters, splitters, cabling) to meet your goals with the fewest devices.
Please note
Each unit boosts one carrier at a time (switchable later).
Final antenna count (1–4+) depends on building layout and measured signal; set during the survey.
Downloads
GO G51 Quick Start Guide
Call ARCS today on 1300 638 311
Installation & safety
Installation must follow the Cel‑Fi GO Quick Start Guide and all documentation supplied. Incorrect installation or misuse may cause injury or equipment damage. ARCS accepts no liability for indirect or consequential loss or injury arising from installation or use of this equipment.
If you’re unsure about selection, antenna design or installation, contact ARCS.
We can handle the full process: Site Survey → design → supply → installation → commissioning → remote monitoring.
Specifications may change without notice. Images are for illustration only and may differ from the exact model supplied.