Your Go-To Professionals for ERRCS Public Safety Radio Amplification Systems including Cellular, PCS, LTE, and DAS Systems Inside of Garages, Commercial Buildings, Apartments, Warehouses and More!

We Also Provide Emergency Responder Radio Coverage Testing and Verifications.


About U.S. Mobile Communications

As Emergency Responder Radio Coverage (ERRC) Specialists, we are locally owned and operated and perform all levels of systems design, installation, and repair. We offer start-to-finish solutions for every project. We also offer full design services. We specialize in public safety DAS or cellular, PCS, LTE, including buildings, apartments, warehouses, factories, garages and more!

We guarantee high-quality design and installation for each and every project. Check out samples of our recent work, and you’ll agree that we’re the best choice for your DAS project.

Emergency Responder Radio Coverage Systems (ERRCS)


First Responders must be able to maintain 2-way radio communications throughout a building in an emergency situation. Whether they are responding to a fire, medical emergency, or domestic threat, they cannot be in a situation where their radios fail to communicate, this is literally a matter of life and death.

Emergency Responder Radio Coverage Systems (ERRCS) are utilized in large buildings and underground structures to provide this critical need to communicate. Emergency Responder Radio Coverage Systems are an important lifesaving technology that enables emergency responders to have effective and reliable communications.

What is ERRC?

The emergency responder radio systems include a combination of a repeater also known as a Bi-Directional Amplifier (BDA), a Distributed Antenna System (DAS), and an electrical power backup system, which in most cases is a Battery Backup System (BBU).

The antenna system is comprised of a Donor Antenna that is attached on the outside of the building or structure and a Distributed Antenna System (DAS) which is an array of multiple antennas that provides the signal transmission coverage for the building’s interior compartments and levels.
Through the Antenna System, the BDA transmits and receives boosted radio transmissions between a base station and the interior of large structures that would otherwise not be able to communicate with the outside environment.

The BDA is supported by an emergency Power Backup System or Battery Backup (BBU) system which includes a power supply, energy storage, and battery charging systems.

The combination of these systems is known by many names such as:
• Emergency Responder Radio Coverage Systems (ERRCS)
• Emergency Responder Communications Enhancement Systems (ERCES)
• Public Safety Distributed Antenna System (PSDAS)
• Two-Way Radio Communications Enhancement Systems
• Public Safety DAS Systems
• Public Safety Radio Enhancement Systems

Why Choose U.S. Mobile Communications?

You need to hire experienced professionals that are able to mitigate the challenges faced in the installation and provisioning of these ERRC systems. The challenges include the environment in and around the buildings i.e. the type of construction and materials used and the nearby terrain and structures, all that can impede the signals path.

With the knowledge of our experienced professionals and through the hundreds of Emergency Responder Radio Coverage Systems that we have designed and installed, we have the expertise to provide the best and most reliable ERRC systems available. All of our Emergency Responder Radio Coverage Systems are fully compliant with all applicable International Fire Code (IFC) and the National Fire Protection Association (NFPA) codes for public safety DAS systems.

Along with ensuring IFC and NFPA codes are met, our specialists will also provide other services, including:

• Tests for RF coverage.
• Plans for system maintenance.
• Local fire code requirements and ordinances consultation.
• Complete installation of the ERRC systems and total integration.

Throughout the testing, installation and management processes our specialists ensure all requirements are met. 

Some of Our High Quality Work

  • Galleria Corporate Center Scottsdale AZ
  • Scottsdale Waterfront Towers Scottsdale AZ
  • Rise on Apache Tempe AZ
  • Nexa Tempe AZ
  • Hanover Tempe AZ
  • Portland Phoenix AZ
  • Iris Surprise AZ
  • Yam Corporate Scottsdale AZ
  • City of Scottsdale Water Treatment Scottsdale AZ
  • Sandra Day O’Connor Federal Court House Phoenix AZ
  • Monroe Hotel Phoenix AZ
  • Sage Condo Scottsdale
  • City of Phoenix Court House Phoenix AZ
  • Tempe Metro Tempe AZ
  • Salt Condos Tempe AZ
  • GoDaddy Tempe AZ
  • Ankor Tempe AZ
  • City of Scottsdale Corp. Yard Scottsdale AZ
  • Coyote Storage Surprise AZ
  • Lakeview Corp. Center Tempe AZ
  • Fashion Square Mall Scottsdale AZ
  • Hayden Ferry Corp Center Tempe AZ
  • City Scottsdale Airport Opts Center Scottsdale AZ
  • ADP Data Center Tempe AZ
  • Local Tempe AZ
  • Plus 100’s More

IFC-510, NFPA-72, NFPA-1221 Public Safety DAS for Certification of Occupancy

Call For Free Consultations

Want a free quote? Enter information about your project, and we’ll respond within one business day!
We offer start-to-finish solutions for every project. We also offer full design services.

Contact Us

U. S. Mobile Communications