Wireless Engineering Built for Critical Communications
Zagarri Engineering provides RF Engineering Design, Integration, and Quality Testing Services. We provide these services for all types of radio networks; Distributed Antenna Systems (DAS), In Building Wireless (IBW), Public Safety ERCES, and Wi-Fi Networks.
Radio Frequency Engineering Design
Comprehensive RF engineering services tailored to your facility’s unique requirements.
Survey Study / Data Collection
Code-compliant ERCES and wireless coverage surveys for Wi-Fi, cellular, two-way radio, and private LTE systems.
Wireless Systems Integration
Integration of wireless technologies with existing building infrastructure and communications systems.
Commissioning & Testing
Independent verification that every wireless system performs as designed and meets project requirements.
Engineering Solutions Across Every Industry
No matter the size, complexity, or purpose of your facility, dependable wireless communication is essential. Zagarri Engineering delivers RF engineering solutions that improve connectivity, enhance life safety, and ensure code compliance across a wide range of industries.
Maintenance & Monitoring
Keep your wireless systems reliable, compliant, and ready when they are needed most. Zagarri Engineering provides ongoing system testing, performance monitoring, preventive maintenance, troubleshooting, and technical support to identify issues early, reduce unexpected downtime, and help extend the life of your wireless infrastructure.
- Issues identified early, before they escalate
- Less unexpected downtime
- Longer life from your wireless infrastructure
Zagarri Engineering has supported the Emergency Responder Communication Enhancement System at One Cardinal Way since its implementation in 2021. Their team has been responsive, knowledgeable, and easy to work with, and they continue to help us maintain the system and stay on top of the annual testing requirements with the St. Louis Fire Department. We appreciate having a reliable partner who understands both the technical and compliance sides of these systems.
Justin Brown, One Cardinal Way
Build a Stronger Wireless Network
Whether you’re planning a new facility, upgrading an existing system, or preparing for code compliance, our engineering team is ready to help. Let’s discuss your project and develop a solution that delivers reliable, high-performance wireless communications.
Contact UsPROJECT HIGHLIGHTS
Proven Experience Across a Range of Facilities
From 29-story towers to underground retail spaces, see how Zagarri Engineering has designed, integrated, and maintained wireless and public safety communication systems for facilities across the St. Louis region.
ERCES
One Cardinal Way
Emergency responder radio coverage for a 29-story downtown St. Louis tower, built to St. Louis Fire Department requirements.
Cellular DAS
Bussen Underground
Cellular DAS enhancement for an underground retail facility in Mehlville, Missouri, engineered for complex RF conditions.
Cellular DAS + ERCES
Bunge Headquarters
Ongoing maintenance, upgrades, and technical support for the Cellular DAS and ERCES at Bunge’s four-level headquarters.
ERCES
STLCC Meramec
Emergency responder communication enhancement for the St. Louis Community College Meramec Student Center in Kirkwood, Missouri.
One Cardinal Way Emergency Responder Communication Enhancement System
Zagarri Engineering designed and implemented an ERCES at One Cardinal Way in downtown St. Louis using ADRF public safety equipment to provide reliable emergency responder radio coverage throughout the 29-story tower. Completed in April 2021, the system was developed to meet St. Louis Fire Department requirements. Zagarri continues to provide annual inspections, RF testing, maintenance, and compliance documentation to help keep the system operational and compliant.
Reliable Emergency Communications
Ongoing Code Compliance
Long-Term System Reliability
Bussen Underground Cellular DAS Enhancement
Zagarri Engineering designed and integrated a Cellular DAS enhancement system for the Bussen Underground retail facility in Mehlville, Missouri. Using Wilson Connectivity and Zinwave equipment, the system was engineered to overcome the RF challenges of the underground limestone environment and deliver reliable voice, text, and data coverage across major wireless carriers throughout the facility.
Reliable Underground Connectivity
Multi-Carrier Coverage
Engineered for Complex RF Conditions
Bunge Headquarters Cellular & Emergency Responder Communication Systems
Zagarri Engineering provides ongoing maintenance, upgrades, and technical support for the Cellular DAS and ERCES at Bunge’s four-level headquarters in Chesterfield, Missouri. Zagarri maintains and enhances the existing CommScope ERA Cellular DAS supporting T-Mobile, AT&T, and Verizon and designed and integrated an ADRF PSR public safety repeater system to improve emergency responder radio coverage. Zagarri continues to provide annual testing, maintenance, and technical support to help maintain reliable cellular and public safety communications throughout the facility.
Cellular Coverage
Enhanced First Responder Communications
Ongoing System Maintenance & Compliance
STLCC Meramec Student Center Emergency Responder Communication Enhancement System
Zagarri Engineering designed and integrated an ERCES at the St. Louis Community College Meramec Student Center in Kirkwood, Missouri, to provide reliable emergency responder radio coverage throughout the facility. The system supports FirstNet 700 MHz and SLATER 800 MHz frequencies and includes integration with the building’s fire alarm control panel for continuous monitoring. Zagarri provided system design, integration, commissioning, and performance testing to ensure dependable communications and compliance with public safety requirements.
Reliable Emergency Communications
Public Safety Code Compliance
Integrated System Monitoring
The Right Expertise for Critical Communications
Reliable communication systems require more than the right technology. They require experienced engineering, careful planning, and a thorough understanding of system performance and public safety requirements.
Zagarri Engineering brings decades of wireless industry experience to complex communication challenges, providing the technical expertise needed to design, evaluate, integrate, and maintain dependable wireless systems.
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