Introducing the first Cel-Fi repeater with 5G support! Nextivity’s G51 1/3/5/7/8/28L/n78 Stationary Repeater, brings the power of both 4G and 5G indoors, solving coverage challenges for residential and commercial buildings. The system delivers industry-leading signal gain of up to 100 dB to overcome mid-band 5G NR coverage challenges that no other solution can.


  • Relays two channels simultaneously:
    1st Relay Channel: 5G 3500 (100MHz)
    2nd Relay Channel: one 3G or 4G band (5/10/15/20MHz)
  • Carrier Switching using WAVE App between Telstra or Optus – one carrier at a time (Vodafone approval pending)
  • Up to 3000 m2 coverage area
  • Voice and Data support on 4G/5G
  • Suited for those in a 5G 3500 coverage area (G41 is more suitable for areas outside of a 5G 3500 coverage area as it supports 2 x 4G band relay)
  • Powered by the latest 4th generation Nextivity proprietary IntelliBoost chip, delivering industry-leading and unconditionally network-safe performance
  • Establishes network-safe uplink power in real-time and automatic uplink muting when no active user equipment is detected
  • Ethernet Port for remote monitoring and management with Nextivity WAVE Portal and WAVE App

In addition to unmatched performance, GO G51 is compact, easy to use, and does not require manual configuration, making it easier than ever before for building owners to equip their buildings with 5G connectivity and ensure better voice quality, 5G data speeds, and fewer dropped calls. GO G51 is perfect for small- to medium-sized buildings, Australian operator-approved, unconditionally network-safe, and offers the flexibility to support various 3G/4G and 5G cellular networks.

The Nextivity Cel-Fi GO G51 is a powerful 4G/5G signal booster designed to improve cellular coverage in large residential and medium-sized commercial spaces. Suited to urban areas where a 5G 3500 signal is available to take advantage of 5G data speeds and increased user capacity.

The G51 also supports 4G LTE data speeds, so you can enjoy fast internet connectivity even in areas with weak signal. Plus, with its easy-to-install design and compact size, the G51 is a convenient solution that won’t take up much space in your home or office.

If you’re tired of dropped calls, slow data speeds, and unreliable cellular coverage, the Nextivity G51 is a great investment. With its advanced signal-boosting technology and broad carrier compatibility, it’s sure to improve your cellular experience and keep you connected when you need it most.

Ideal for Boosting Mobile Signal in:

  • Large Homes
  • Single or Multi-Level Commercial Buildings
  • Government Buildings
  • Medical and Nursing Homes
  • Infill 5G coverage for Hotels/Shopping Centres/Hospitals/Conference Centres
  • Underground Parking
  • Factories and Manufacturing
  • Warehouses and Logistics

Band Support by Operator:
3G – 850
4G – 700L/1800/2100/2600
5G – 3500

3G – 900
4G – 700L/900/1800/2100/2300/2600
5G -3500

Band Relay
Relays two bands at a time from below:
First Relay Channel: 5G 3500 (100MHz)
Second Relay Channel: 3G/4G band (5/10/15/20MHz)

Output Power
DL Power: 27dBm (n78); 20 dBm (1/3/5/7/8/28L) per band
Should provide the same coverage as a G41 on 4G and 5G.

Max Data Throughput

Ethernet Port for remote monitoring
Power Port
2 x SMA/F Antenna Ports

Brand Nextivity

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