Cel-Fi by Nextivity QUATRA 4000i Enterprise Cell Signal Booster System (Part 90)


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Cel-Fi QUATRA 4000i - Front
This is a  PART 90 Product Learn More
  • Coverage up to 200,000 sq. ft.
  • +100 dB gain for all US carriers
  • All Digital Cat5e PoE/RFoE Solution
  • Industrial Grade Part 90 Class B signal booster system
  • 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 enterprise 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.

Speak to an Expert 1-800-420-3211
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Superior Coverage

The Cel-Fi QUATRA 4000i is an enterprise-grade signal booster system, capable of covering up to 200,000 sq ft with signal, for any cellular carrier. Get rid of spotty calls, buffering data, bad voice quality and general signal frustration once and for all. Great for large enterprise spaces like office buildings, hospitals, retail stores and indoor venues.

Get More Gain

Thanks to Cel-Fi's unique set up the QUATRA 4000i can boost signal with more gain than their 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. Covers AT&T, Verizon, T-Mobile, US Cellular, and more.

PoE and Digital Cabling

Set up your QUATRA 4000i units anywhere with PoE. Power over Ethernet allows the Coverage Units of the booster to use an ethernet cable as a power source, eliminating the need for an AC wall socket. Digital cabling gives you a better signal, even over longer cable runs

Extra Bands with Part 90

The 4000i is FCC Part 90 approved, meaning it has access to extra frequencies that other boosters don't. Flood your space with 5G/4G/LTE voice and data on up to four bands at the same time, from four different carriers. It works on bands 2, 4, 5, 12, 13, 25, 26, 30, 41, and 71.*

*Requires carrier approval to install Part 90 booster.

Fast Installation, Happy Clients

Thanks to Cat5 cable runs, the QUATRA 4000i is easier and quicker to install. Run cables through walls to deliver not only signal but power to each unit too. Set up and manage the entire system remotely using the WAVE app. The QUATRA 4000i is designed for quick installation, unrivaled power, and more band support.

How a Cel-Fi Quatra System Works

Product Details

The Cel-Fi QUATRA 4000i is an all-digital hybrid DAS signal booster system. It includes a network unit and a coverage unit. The network unit draws in signal from up to four carriers at a time and sends it through the Cat5 cables to the coverage units. Each coverage unit then broadcasts the cell signal. One 4000 NU (Network Unit) can support up to 6 CUs (Coverage Unit) for a maximum coverage area of up to 75,000 sq ft. Four Cel-Fi QUATRAs–with support of up to 24 CUs–when connected to a small cell can provide unified coverage up to 200,000 sq ft.

Enjoy up to +100dB with the QUATRA 4000i, which is more than +30 dB or up to 1000x more power compared to other boosters. Cat 5 cable runs mean better signal even deeper inside your building. Cat5 also supports PoE, allowing you to run power to your coverage unit from anywhere.

What stands the QUATRA 4000i apart from the regular 4000 is its FCC Part 90 certification. With that it can use extra frequencies from four carriers; AT&T, Verizon, T-Mobile, and Sprint.

Bands supported:

  • AT&T Bands: 12&5, 12&25, 12&4, 12&2, 30&5, 30&25, 30&4, 30&2
  • Sprint Bands: 5&25, 5&2, 26&25, 26&2, 41&26, 41&25, 41&2, 41&5
  • T-Mobile Bands: 25&4, 25&12, 4&12, 4&71, 25&71, 2&4, 2&12, 2&71
  • Verizon Bands: 13&25, 13&4, 13&2
  • All Bands: 2/4/5/12/13/25/26/30/41/71

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.)
  • Carrier-approved and unconditionally network safe Independent donor antenna or small cell input per carrier
  • Compatible with Cel-Fi WAVE software to activate, optimize, and manage online.
  • Supports T-Mobile's new Band 41
  • FCC Part 90 approved
  • CAT5 Cable supports digital signal and PoE
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

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 4000i 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.

My CU lights are all solid green, but my system is not working?

All of the CU lights will turn solid green once the CU starts relaying one channel. It takes a while for the system to relay all the other channels as well

The Cel-Fi QUATRA 4000i is an FCC-certified Part 90 enterprise signal booster. It is the industrial bigger brother of the QUATRA 4000, with Band 71 coverage. Enjoy more bands than a regular booster, along with up to +100dB gain. Cover up to 200,000 sq ft of indoor space. Perfect for hospitals, office buildings, retail spaces, warehouses, and more. The QUATRA 4000i supports AT&T, Verizon, T-Mobile, and Sprint. Boost 4G, 4G LTE, and 5G on four bands at the same time from four carriers.