Cel-Fi by Nextivity QUATRA 4000 Enterprise Cell Signal Booster System


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Cel-Fi Cel-Fi QUATRA 4000 Enterprise Cell Signal Booster System
  • Coverage up to 200,000 sq. ft.
  • +100 dB gain for all US carriers
  • Innovative network/coverage unit setup for maximum coverage
  • Independent Donor antenna or Small Cell input per carrier
  • Uses CAT5 network cable for simple cable runs

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This enterprise product cannot be sold online. The final price depends on configuration. Contact our signal experts and we can help you design the most cost-effective solution tailored to your specific requirements.
Or call our experts directly Mon-Friday 8AM-5PM CST.

Improve Your In-Building Cellular Signal Immediately

Installing a QUATRA 4000 cell signal booster system requires a professional's touch. Our team of signal experts will make sure you get coverage where you need it. We have improved indoor cellular coverage in millions of square feet for some of the largest companies in the world.

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Top Of The Range

The Cel-Fi QUATRA 4000 is the most advanced multi-band signal booster in the world. It greatly enhances 4G, 4G LTE, and 5G cellular signal for any wireless device across all major American carriers. It does not require any special licenses from the FCC and will give you an incredible +100db in gain. Cover your entire building up to 200,000 square feet in strong cell signal from up to four carriers. Great for large enterprise spaces like office buildings, hospitals, retail stores and indoor venues.

Better Boosting Power

Cel-Fi is the only booster brand on the market that boosts a single carrier at a time, giving it more gain than its competitors. Enjoy boosted signal up to +100 dB, which is a difference of +30 dB or up to 1000x more power compared to other boosters. No other enterprise-grade booster gives you this much gain over this much space.

DAS Hybrid System

The QUATRA 4000 works with a hybrid system consisting of two elements. The network unit draws in outside cellular signal and relays it to inside coverage units. Each CU (Coverage Unit) supplies signal to the immediate area both horizontally and vertically. This means that a CU can create a coverage bubble that will go through floors.

PoE and Digital Cabling

With PoE, your Coverage Units can be installed anywhere. The network unit will supply power via ethernet to every coverage unit. Digital Cat5 cabling makes installation so much easier as well as improves signal. Now you can run longer, simpler cable setups and still have great signal even deep inside your building.

Remote Management

Cel-Fi's cloud-based WAVE app allows you to manage and control your QUATRA system from anywhere. Simply log into the app using a computer, or even your phone, and create alerts, change settings, or update software. The QUATRA is designed to be a powerful, comprehensive enterprise signal booster system that is easy to install and does exactly what you need it to.

How a Cel-Fi Quatra System Works

Product Details

The Cel-Fi QUATRA 4000 is an all-digital hybrid DAS signal booster system. It includes a network unit and a coverage unit. The Network Unit receives and amplifies the outside signal, then uses Cat5 cable to send the signal to Coverage Units throughout the installation. The Coverage Units then make use of traditional dome or panel antennas to spread the amplified signal throughout its substantial range. Six coverage units can be supported at one time. One 4000 NU can support up to 6 CUs for a maximum coverage area up to 75,000 sq ft. Four Cel-Fi QUATRAs–with support up to 24 CUs–when connected to a small cell can provide unified coverage up to 200,000 sq ft.

With up to +100dB, which is more than +30 dB or up to 1000x more power compared to other boosters, you can be sure that your whole building will be covered in good signal. Cat5 cabling has less signal loss, making the QUATRA 4000 the perfect choice for larger buildings and long cable runs. Cat5 also supports PoE, allowing you to run power to your coverage unit from anywhere.

Set up, control, manage and more with the WAVE app. WAVE is cloud-based and can be accessed from anywhere. You can set up alerts and alarms, change settings, or just make sure that everything is ticking along as it should with just your phone.

  • Scalable All-Digital PoE Cat5e Active DAS Hybrid for Middleprise
  • Works for all phones & cellular devices on AT&T, Verizon, T-Mobile, and/or Sprint (select your own carriers.)
  • PoE for easier installation
  • CAT5 Cabling for better signal quality
  • Virtually eliminates dropped calls
  • Crystal clear voice quality
  • Faster internet data (uploads, downloads, and streaming)
  • Wider coverage area & Improved reception
  • Consistent service throughout the office
How Does It Work
  1. The outdoor antenna draws in signal from nearby towers and sends it to the network unit.
  2. The network unit then sends the signal through the Cat5 cables to each coverage unit. Power is sent via PoE from the network unit to each coverage unit.
  3. The coverage unit then boosts the signal up to +100 dB, sending it through floors and walls to eliminate dead spots.
Who is it for?
  • Large office buildings
  • Hospitals
  • Retail spaces
  • Multistory buildings
  • Enterprise spaces
Technical Specifications
Cel-Fi QUATRA 4000 Active DAS Hybrid system
Operators Supported AT&T, Sprint, Verizon, T-Mobile
Bands 4, 12, 13, 25, 26, 30, 41, 71
Coverage Unit Frequency 617 - 2690 MHz Downlink; 663 - 2690 MHz Uplink
Downlink Power 17 dBm per band
Max Gain 100 decibels (dB)
RF Port Connector N-Female
Power 100V to 240V AC, 47 – 63Hz
Dimensions Network Unit 12.9 x 10.7 x 3.4 in / 330 x 272 x 85 mm
Weight Network Unit 14.33 lbs / 6.5 kgs


This is a CONSUMER device. BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider and have your provider's consent. Most wireless providers consent to the use of signal boosters. Some providers may not consent to the use of this device on their network. If you are unsure, contact your provider. You MUST operate this device with approved antennas and cables as specified by the manufacturer. Antennas MUST be installed at least 20 cm (8 inches) from any person. You MUST cease operating this device immediately if requested by FCC or a licensed wireless service provider.


At Signal Boosters we provide full turnkey integration of in-building wireless (IBW) systems that amplify signal indoors, delivering the signal you need to get the job done. From the first call to post-project, Signal Boosters handles every detail personally in-house. Our team of RF engineers, system integrators, designers, and certified signal boost specialists take complete ownership of your project.

  1. Assessment - Pre-survey - Site survey
  2. System Design - Data analysis - Floor plans - Equipment & Pricing
  3. Installation - Installing equipment - Optimization
  4. Support - Documentation - Monitoring & support

Frequently Asked Questions

What is the difference between the QUATRA 4000 and the QUATRA 4000i?

The QUATRA 4000 is FCC Part 20 certified. It supports bands 2,4,5,12,13, 25. The QUATRA 4000i is FCC Part 90 certified. It supports bands 2,4,5,12,13, 25, 26, 30, 41, and 71.

Can the QUATRA 4000 be set up outdoors?

No. The QUATRA units are not weatherproof and must be set up indoors.

Can you combine both donor antenna feeds?

Yes, if the donor signal is coming from the same direction.

What is the USB on the back of the QUATRA 4000 used for?

The USB on the back of the QUATRA 4000 NU is for the Compass Site Survey Too and is for Nextivity use only.

Can I make the NU to CU cables more than 330 feet?

Yes. The standard Cat5e cable length maximum is 330 feet, or 660 feet if a QUATRA Range Extender is used halfway along the cable length. 490 feet (984 feet with a QRE) is possible with thicker 22/23 gauge CAT6/7 Ethernet cables.