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Cel-Fi QUATRA 3G / 4G Signal Booster for O2, EE, Three, Vodafone (Medium / Large Enterprises)

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Cel-Fi QUATRA is a scalable in-building cellular system for delivering high quality signal in venues up to 200,000 sq. ft. It is a cost-efficient and easy-to-deploy solution that combines the best of active DAS and Smart Booster technologies that have been widely adopted by carriers around the world, setting a new standard in Signal Boosting capabilities.

  • Provides 100dB of signal gain, 1,000 times stronger than traditional analogue boosters, which provide 60-70 dB of gain
  • Creates a bubble of coverage area up to 50,000 sq. ft. (4,700 sq.m.) per system, scaling up to 200,000 sq.ft. (18,600 sq.m.) by combining multiple systems together (See Sample Configurations below)
  • Boosts both 3G and 4G signal coverage for O2, EE, Three or Vodafone, and all hosted MVNO under the Network of your choice
  • Supports up to 4 bands simultaneously
  • Reduces the cell phones’ power requirements and extends their battery life
  • Remote Monitoring and Management via the WAVE Platform

Cel-Fi QUATRA is CE, FCC and ISED certified. Cel-Fi Signal boosters are legal to use and have been approved for use by mobile operators.

The basic QUATRA product bundle provided consists of one full system (25,000 to 50,000 sq.ft. coverage area) for the Off-Air configuration (explained below) and is the recommended solution for most venues. It includes one (1) Network Unit, two to four (2-4) Coverage Units (depending on the desired coverage area) and one (1) Indoor/Outdoor MIMO Antenna (Antenna Mount also included). Read the product details below for datasheets and additional information, or contact us for details.

Areas of Coverage:
2 Coverage Units (Default): 25,000 sq. ft. / 2,350 sq. m.
3 Coverage Units: 38,000 sq. ft. / 3,550 sq. m.
4 Coverage Units: 50,000 sq. ft. / 4,700 sq. m.

Contact Us for details or invoicing options


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Availability: Out of stock

Excl. Tax: £1,800.00 Incl. Tax: £2,160.00


Sample Configurations

Cel-Fi QUATRA Off-Air Configuration

Cel-Fi QUATRA is comprised of a Network Unit (NU) and up to four distributed Coverage Units (CUs) dynamically networked into a single system. Cel-Fi QUATRA can be installed off-air (external antenna mode) to provide high-quality 3G & 4G mobile signal for voice & data, covering up to 50,000 sq. ft. Cel-Fi QUATRA will reduce dead zones and connectivity issues, expanding the network footprint with significantly higher system gain. It will also reduce the cell phones’ power requirements and extend their battery life. The QUATRA bundle offered here fits this type of configuration.

For larger venues, Cel-Fi QUATRA can be integrated with carrier small cell equipment and operated in distributed small cell mode, creating a Supercell. This configuration allows for up to four Systems to be linked together on the small cell, supporting a total of up to 4 Network Units / 16 Coverage Units. This scales the coverage area up to 200,000 sq. ft. (18,600 sq. metres). Please contact us for more details, if you are interested in this type of configuration.

Smart Cellular Coverage

Cel-Fi QUATRA is self-configuring and self-optimizing, distributes RF (Radio Frequencies) over Ethernet (RFoE), and leverages Power-over-Ethernet (POE) for ease and accuracy of installation (by Cel-Fi Certified professionals). The system is monitored and managed using the Cel-Fi WAVE Platform.

Configurations are available for use on global carrier networks.

  • Improves cellular reception for venues from 25,000 to 50,000 sq. ft. per system. Scalable to four systems for up to 200,000 sq. ft. (see “Sample Configuration” above)
  • Built for streamlined installation and maintenance by a Cel-Fi Certified professional
  • Carrier approved and unconditionally network safe for voice and data
  • Intelligently self-configures and continually self-optimizes to adapt to environmental changes
  • AntennaBoost intelligent antenna aiming optimizes signal quality
  • Remote monitoring and management using the Cel-Fi WAVE Platform
  • Designed for off-air or small cell applications
  • Best quality signal at 100 dB max gain in off-air mode
  • Systems include Internal Antennas (MIMO) and External Antenna connections (MIMO)
  • IntelliBoost 6 Core Processor delivers high speeds with low power consumption
  • Advanced digital echo-cancellation and channel select filtering algorithms
  • Automatic Gain Control (AGC) maximizes system power
  • Adaptive signal equalization
  • Seamless integration with the macro network; improves network efficiency without causing interference
  • Only one power outlet needed for the entire system (at the NU)
  • External Multi-Band Panel MIMO Antenna and Small Cell Interface device available (Optional)

Datasheets available on the relevant section on the right.

Finally, an Option for the Middleprise! - Optimized for Installers, Budgeted for Middleprise

Cel-Fi QUATRA is the first active DAS hybrid for spaces up to 50,000 sq. ft. (off air configuration) or 200,000 sq. ft. (small cell configuration). Cel-Fi provides solutions built specifically for customers in offices or industrial locations. Cel-Fi QUATRA distributes coverage with RF-over-Ethernet (RFoE) and power with Power-over-Ethernet (PoE), while finding the best signal with an 8-point antenna positioning solution; to ease installation at the distributed locations. Cel-Fi QUATRA can be deployed by Cel-Fi Certified professionals. Cel-Fi Certification is available at no cost through online training by Nextivity.

Cel-Fi QUATRA delivers a lower Total Cost of Ownership (TCO) over a Passive or Active DAS installation for a similar size venue. Cel-Fi Certified professionals can install and maintain the rich features of Cel-Fi QUATRA at the lowest CAPEX and OPEX of any in-building enterprise cellular coverage solution in the industry.

A Solution for the Carrier - Unconditionally Network Safe

Cel-Fi QUATRA is designed to improve indoor signal coverage without any risk of interference on the mobile network. Cel-Fi QUATRA provides a sophisticated network-safe solution that has been engineered to deliver multiple levels of network protection:

  • Uplink power control to prevent desensitizing the network
  • Echo cancellation and feedback control
  • Uplink gating
  • Signal qualification (channels are individually qualified, so noise or very poor signals won’t be amplified and degrade the network)
  • The Cel-Fi WAVE Platform cloud-based portal enables an operator to monitor signal KPI’s, such as channel configurations, RSRP, RSCP, SINR, and systems gains, providing control and optimization guidelines.

Cel-Fi QUATRA components (Off-Air Configuration)

Cel-Fi QUATRA Network Unit (NU)

Cel-Fi QUATRA Network Unit

Cel-Fi QUATRA Network Unit (NU) is the hub of the system. The scalable design works with one to four Coverage Units to provide up to 50,000 sq. ft. of coverage.

- Provides donor signal to the Cel-Fi QUATRA system
- Provides power to Coverage Units (up to four)
- Connects to the Cel-Fi WAVE Platform for remote monitoring and management

Cel-Fi QUATRA Coverage Unit (CU)

Cel-Fi QUATRA Coverage Unit

Cel-Fi QUATRA Coverage Unit (CU) is the remote unit of the system that rebroadcasts the donor signal. The cost efficient and easy-to-deploy system leverages Power-Over-Ethernet (POE) for up to four CUs.

- Provides coverage in the Cel-Fi QUATRA system (up to four per Network Unit)
- Power delivered by Power-Over-Ethernet from the Network Unit
- Self-configuring and self-optimising

Cel-Fi MIMO Panel Antenna powered by AntennaBoost

Cel-Fi QUATRA MIMO Antenna

The Cel-Fi MIMO Panel Antenna is the only authorized indoor/outdoor antenna for Cel-Fi QUATRA. Cel-Fi AntennaBoost integrates the Cel-Fi MIMO Panel Antenna with the Cel-Fi WAVE Platform to provide the best donor signal in the industry. The antenna connects to any MIMO-enabled NU or CU with QMA (quick connect) cables. Nextivity’s proprietary 8-position dial base enables the antenna to be rotated in 45-degree increments for best performance, managed with real-time data from the Cel-Fi WAVE Platform Antenna Position Test.

- High gain directional MIMO panel antenna
- Donor managed with AntennaBoost’s 8-position aiming mount
- Includes options for ceiling, wall, and pole mounting
- Required for off-air installation of multiple CUs

Cel-Fi WAVE Portal


The Cel-Fi WAVE Platform enables device management and maintenance of Cel-Fi QUATRA systems. The Cel-Fi WAVE Platform mobile app facilitates ease of use on site. Alerts and alarms can be used as configured out of the box or they can be customized however the owner or admin chooses. The Cel-Fi WAVE Platform is a cloud-based remote management platform that allows users/operators to manage multiple Cel-Fi QUATRA systems. Features of the platform include:

- Cel-Fi device and asset management
- Data modeling and reporting
- Mobile and computer applications
- Globally trusted carrier-grade security
- Users can access the Cel-Fi WAVE Platform portal through the dashboard interface, or integrate it via APIs.

WAVE Portal Login ›
Request Portal Access ›

Cel-Fi QUATRA Range Extender (QRE)
Not included in the bundle. Sold separately if needed: Click here

Cel-Fi QUATRA Range Extender

Cel-Fi QUATRA Range Extender is a Power over Ethernet (PoE) device that extends the maximum distance between the NU and the CU.

- Allows NU-to-CU cable lengths of up to 200 meters (650 ft.)
- Power over Ethernet (no separate power supply or PoE injector needed)

How does it work?


Device Model iPhone X/ 10
Range Signal Boosters



Bands 1/3/8/20 (Also available in 1/7/8/20, contact us for that model). All systems are reconfigured to specific carriers.
Certifications ISED, FCC, CEs
54 VDC
-25 to 40 Degrees Celsius
Mounting Mounting system provided with multiple options for flexible placement.
Network Unit: 264 x 185 x 62mm (40.8g)

Coverage Unit: 225 x 185 x 37mm (29.2g)

Wideband MIMO Antenna: 237.5×229.5x50mm

QUATRA Range Extender (QRE) (Sold separately if required): 140mm (L) x 66mm (W) x 28mm (H) (0.7kg)

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