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In-Building 4G & 5G Coverage
Cel-Fi QUATRA Design & Installation Made Simple
We’re Cel-Fi by Nextivity’s largest American partner for a reason: expert designs, peerless support, and optional nationwide installation.
Trusted by 10,000+ SMBs and Enterprises:
Hassle-Free 4G and 5G Network Coverage
No other DAS system compares. Whether you’re covering a single story or a full campus of buildings, CEL-FI QUATRA makes deployment simple, scalable, and affordable.
Outdoor Signal, Amplified
Deploy QUATRA quickly and enjoy the reliability and uptime of the macro network

CEL-FI QUATRA is the only system certified by the FCC to amplify outdoor signal by 100 decibels. That means it can cover large buildings with signal from nearby towers, without needing carrier approval or costly signal sources.

Meet IntelliBoost
The patented chipset behind QUATRA’s superior performance

At the heart of Nextivity’s CEL-FI QUATRA product line is the IntelliBoost chipset, a custom, patented ASIC that delivers unrivaled performance. With digital filtering, echo cancellation, signal demodulation and much more, no other off-air signal boosting technology comes close.

Cat5e (or Fiber) Distribution

CEL-FI QUATRA is the only DAS that amplifies and rebroadcasts outdoor 4G & 5G signal over regular ethernet cable, with the option of using fiber cables to cover longer distances.

Cloud Monitoring, Built-In

Every QUATRA comes with Cel-Fi’s WAVE cloud monitoring platform included. Whether it’s connected to Waveform’s Network Operations Center or monitored by your IT team directly, monitoring access is just a click away.

For Any Commercial Building

Thanks to a modular and expandable system, QUATRA can scale to cover from tens to hundreds of thousands of square feet.

  • Offices
  • Schools & colleges
  • Warehouses
  • Manufacturing facilities
  • Hotels and venues
  • Healthcare & Hospitals
  • Shipping ports
  • Utilities
  • Oil, gas, and mines
  • Luxury homes
QUATRA Product Line
Two Products, Thousands of Possible Configurations
  • Multi-Carrier Coverage: AT&T, T-Mobile, and Verizon.
  • CBRS Private Networking Support: Easily add a private 4G or 5G signal source.
  • Core Components: QUATRA 4000C Network Unit, QUATRA 4000C Coverage Unit, QUATRA 4000C Fiber Hub
Our Process
Deploying QUATRA with Waveform
After deploying hundreds of Nextivity systems for customers around the country, we’ve developed two deployment methodologies that best serve customers.
For mid-sized buildings
Guided Self-Install
For buildings between 15,000 and 100,000 square feet

  • Remote Signal Survey
    We’ll walk you through taking basic signal measurements and look up nearby cell towers.
  • Full System Design Including RF Propagation Analysis
    We’ll analyze your building, design a full QUATRA system, perform RF propagation analysis, and generate predicted coverage maps.
  • Guided System Install & Commissioning
    We’ll ship you equipment and walk you through getting all the equipment installed and deployed.
  • Ongoing Support
    We’ll provide ongoing technical support in case you any experience any issues down the line.
For large buildings
Turnkey Install
For buildings between 100,000 and 1M+ square feet

  • Fast Initial Quote
    We'll quickly give you an idea of typical costs for your building based on size & building materials.
  • Full In-Person Site Survey
    Our technicians will visit your site to take signal readings and make detailed deployment notes.
  • Complete Turnkey Install & Post-Install Testing
    Our deployment team takes care of everything from installation, commissioning, to testing and cleanup.
  • Maintenance and NOC Monitoring Plans
    We’ll monitor and maintain your QUATRA system to ensure uptime and performance
Why Choose Waveform
We've Helped Over 5,000 SMBs and
Enterprises Improve Their Cell Signal
At Waveform, cell signal enhancement is all we do. Since our start over 15 years ago we’ve helped thousands of clients across the country fix their signal problems.
  • 150,000 sq ft residential building
  • Multi-Carrier Off-Air Distributed Antenna System deployment.
  • 150,000 sq ft residential building
  • Multi-Carrier QUATRA Distributed Antenna System deployment.
  • 25,000+ sq ft office and laboratory
  • Dual-Carrier Hybrid Distributed Antenna System

The Waveform team is clearly passionate about the work they do, and they're incredibly knowledgeable about cellular connectivity for the IoT devices in our EV chargers. It's always easy working with them because they go the extra mile to make it easy for us. Their solutions work as expected, and we've yet to experience any downtime.

Jeffery Moore
Infrastructure Solutions Engineer, Shell Recharge Solutions

Working with Waveform on cell coverage solutions for Rancho Mirage's City Hall was a refreshingly positive experience! Waveform's team worked closely with us to understand our needs. They went above and beyond by designing an excellent system, communicating well, and supplying all the materials promptly. If only more of my projects went as well as this!

Jason Jaurigue
Director Of Information Services, State of California

SemaConnect has partnered with Waveform to provide customers with world class support and expertise to deliver reliable cellular signal solutions for SemaConnect Charging Stations. Over the last year they have been faultlessly reliable and always professional. They know this stuff better than anyone we've worked with, and their solutions show it!

Peter Fisher
Senior Project Manager, SemaConnect/Blink Charging
Meet Our Team
Delivering Connectivity
Our team of 50+ signal experts is distributed across the country and ready and eager to help you achieve full bars, say goodbye to frustrating dropped calls, and say hello to blazing fast data rates. Here's a few of the faces you might encounter on your journey to better signal.
Jonathan Boucher
Commercial Solutions Lead
Jose Martinez
Commercial Solutions
John Farag
Commercial Solutions
Austen Hoover
Senior Account Executive
Tom Hernandez
VP, Enterprise
Andy Roberts
Director, Engineering
Josh Segelson
Director, Project Management
Sam Westwood
Connect With a Signal Expert
Get a Free, Fast Quote

Connect with our signal experts to get a free signal consultation, and initial estimate for your signal needs.

Please check the coverage area as it's typically over 1,000 sq ft
In particular: are there any concrete or metal walls or other dense obstructions within the building?
No obligation. No charge.