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We're moving into our next phase, leading the mobile connectivity evolution.
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Commercial building

Stop losing calls in your building

Reliable 5G & 4G coverage in commercial spaces, minimizing downtime and strengthening team coordination.


  • For All Commercial Spaces: Ideal for offices, warehouses, hospitals, schools, and more.
  • Carrier-Approved with 1,000x More Power: Delivers strongest amplification compared to traditional cell phone boosters for higher-quality coverage.
  • Flexible Architecture: Easily scales to cover a few thousand to hundreds of thousands of sq ft.
  • Fast Turnaround: Deploys in days, not months.
Cel-Fi Partner for 15+ Years | Nationwide Trusted Cel-Fi Provider | 7.5M+ Sq Ft of Coverage Delivered | Cel-Fi Certified Teams
Cel-Fi-partner logo nationwide-trusted logo yes-prep logo Glen Oaks logo

Two Solutions. Best-in-Class Coverage.

Cel-Fi QUATRA 4000c Cel-Fi  
QUATRA 4000c
Cel-Fi QUATRA EVO Cel-Fi  
QUATRA EVO
Best For Multi-carrier coverage for large facilities and campuses Targeted cost-effective coverage for small to mid-size commercial spaces
DAS Type Hybrid Hybrid
Supported Carriers Up to 3 Carriers Simultaneously (AT&T, Verizon, & T-Mobile) 1 or 2 Carrier Simultaneously (Choice of AT&T, Verizon, or T-Mobile)
Private Cellular/CBRS Support Yes No
Advances Safety with Smart Server Antennas Allows smart sensor integration and acoustic gunshot detection Allows smart sensor integration and acoustic gunshot detection
Budget Premium Enterprise Solution Cost-Effective Commercial Solution
Boosting Power Up to 100 dB Gain Up to 100 dB Gain
Get a Quote Learn More Get a Quote Learn More
Cel-Fi QUATRA 4000c Cel-Fi  QUATRA 4000c

Best For:

Multi-carrier coverage for large facilities and campuses

DAS Type:

Hybrid

Supported Carriers:

Up to 3 Carriers Simultaneously (AT&T, Verizon, & T-Mobile)

Private Cellular/CBRS Support:

Yes

Advances Safety with Smart Server Antennas:

Allows smart sensor integration and acoustic gunshot detection

Budget:

Premium Enterprise Solution

Boosting Power:

Up to 100 dB Gain

Cel-Fi QUATRA EVO Cel-Fi  QUATRA EVO

Best For:

Targeted cost-effective coverage for small to mid-size commercial spaces

DAS Type:

Hybrid

Supported Carriers:

1 or 2 Carrier Simultaneously (Choice of AT&T, Verizon, or T-Mobile)

Private Cellular/CBRS Support:

No

Advances Safety with Smart Server Antennas:

Allows smart sensor integration and acoustic gunshot detection

Budget:

Cost-Effective Commercial Solution

Boosting Power:

Up to 100 dB Gain

The Cel-Fi QUATRA Advantage

Superior Signal Strength

1000x more powerful than traditional boosters with up to 100 dB gain, maximizing coverage.

IntelliBoost Technology

Advanced digital signal processing with echo cancellation, channel filtering, and more.

Flexible Coverage

A single system can be configured to boost one or multiple carriers simultaneously.

Carrier Approved

Certified for use on all major US carriers, including AT&T, Verizon, and T-Mobile.

Scalability

Easy deployment in buildings of any size with PoE, CAT cabling, and fiber extension options.

Remote Management

Monitor and optimize performance real-time through the WAVE cloud-based platform.

See the Difference QUATRA Makes

Bombardier aircraft

Bombardier

Cel-Fi QUATRA 4000c Installation

Problem


Unreliable cellular reception caused by metal and brick construction created communication bottlenecks that impacted coordination, response times, and daily operational efficiency.

Results


Post-installation, cellular connectivity at Bombardier significantly improved – eliminating dead zones in multiple buildings and spotty connections across all major carriers.

Real Signal Improvements

Results in dBm* from one of three Bombardier buildings.

AT&T signal improvement chart
Verizon signal improvement chart
T-Mobile signal improvement chart

*dBm represents signal strength. Closer to –50 dBm = stronger signal. Greater than -110 dBm = weak to unusable reception.

Read the Full Case Study

Expert Cel-Fi QUATRA Installation Built Around Your Needs

Every building is different. Our expert installation team specializes in crafting Cel-Fi QUATRA solutions that are personalized to your space, requirements, and budget, ensuring reliable cellular connectivity you can count on.

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Listen to
Your Needs

Every project starts with a free consultation to understand your pain points, priorities, and expectations.

Site
Survey

Our team visits your business to conduct a thorough walkthrough, testing signal strength and identifying obstacles.

Custom
Design

We design a tailored solution that is guaranteed to overcome existing signal challenges and meet your coverage goals within your budget.

Solution
Proposal

You'll receive a clear, detailed proposal outlining our recommended solution, performance expectations, and cost.

Professional
Installation

Our Cel-Fi certified installers deploy your custom solution, handling everything from cabling to final testing.

1

Listen to Your Needs

Every project starts with a free consultation to understand your pain points, priorities, and expectations.


2

Site Survey

Our team visits your business to conduct a thorough walkthrough, testing signal strength and identifying obstacles.


3

Custom Design

We design a tailored solution that is guaranteed to overcome existing signal challenges and meet your coverage goals within your budget.


4

Solution Proposal

You'll receive a clear, detailed proposal outlining our recommended solution, performance expectations, and cost.


5

Professional Installation

Our Cel-Fi certified installers deploy your custom solution, handling everything from cabling to final testing.

Bombardier saw a complete transformation in cellular connectivity throughout three buildings — consistent signal in conference rooms, offices, aircraft hangars, break rooms, and more.

Ready to Eliminate Dead Zones?

Talk to an Expert

or Call Us Today: 1-800-420-3211