888-973-2867
Coverage that doesn't stop at the front door
Large buildings block cellular and two-way radio signal. Sector designs, installs, and supports distributed antenna systems that keep calls connected, alerts moving, and first responders on the radio, floor to floor.
STEEL, CONCRETE, AND GLASS
Big buildings kill signal
Steel, concrete, and low-emissivity glass turn a large building into a barrier. Add distance from the nearest tower and the signal that works fine in the parking lot dies at the front door. The result is dead zones, dropped calls, 911 that won't connect, and two-way radios that go quiet exactly where people need them.
There are really two gaps, and most large buildings have both. The first is everyday cellular coverage that staff, visitors, and operations depend on. The second is public-safety radio coverage that fire and building codes now require, the kind a fire marshal checks before signing off on a Certificate of Occupancy.
Sector solves both, separately or in the same building, and designs them so the systems don't interfere with each other or with the carrier networks.
WHO THIS SERVES
UPTIME AND SAFETY
Cellular Resilience for Commercial →
Warehouses, plants, and offices
Dead zones cost a manufacturing floor, a warehouse, a monitored site, or an office building real money in safety, security, and lost time. The bigger the footprint and the more steel and glass in it, the worse it gets. Many of these buildings also trip the fire-code threshold for public-safety radio coverage. Sector handles the cellular side, the public-safety side, or both.
LIFE-SAFETY COVERAGE
Cellular Resilience for Education →
Schools and campuses
On a campus, coverage is a safety issue first. A 911 call has to connect from any room, a mass alert has to reach everyone, and a responder's radio has to work the moment they walk in. The same DAS that carries that coverage can also carry panic buttons and gunshot detection. Cellular Resilience is one of the four pillars of our Alyssa's Law work.
CODE-DRIVEN COVERAGE
Talk to Sector →
Public buildings and responder facilities
Courthouses, city halls, and fire and police stations carry the same code-driven requirement for responder radio coverage and FirstNet, on top of everyday cellular. Sector has designed and installed DAS and BDA systems for fire-district facilities, including the ongoing maintenance that keeps them in compliance.
HOW WE APPROACH THIS
01
Survey before we spec
Before anything gets quoted, we run a pre-installation signal sweep of the building, document the existing levels, and map the dead zones with heat maps. The design comes from the building, not a template.
02
Design to code and to carrier
Public-safety systems are designed to NFPA, IFC Section 510, and UL 2524. Cellular systems are designed to FCC rules and carrier requirements. We prepare and submit the documentation to your Authority Having Jurisdiction and work the approvals.
03
One system or two, no interference
Commercial cellular and public-safety radio can share a building, but they have to be kept apart on purpose. We design them to stay network-safe and out of each other's way, which avoids the expensive filtering a careless install needs.
04
Prove it, then support it
We commission the system, run a final acceptance sweep with grid testing, and produce the documentation the AHJ needs. Then we train your people and put a maintenance plan in place.
WHY SECTOR FOR THIS SOLUTION
A certified integrator, not a box reseller
Sector is a Nextivity Certified System Integrator. We design, install, commission, and warrant the system, and the codes that govern public-safety DAS require exactly that. Buying the hardware alone doesn't get you a signed Certificate of Occupancy.
One point of contact
Under our maintenance agreement, Sector is your liaison to the manufacturer. If a unit fails, we open the ticket, work it with the manufacturer's engineers, handle the RMA, and get the replacement under warranty, so your team isn't chasing a vendor.
We stay after the install
Quarterly on-site preventive maintenance, 24/7 remote support, and an annual maintenance contract keep the system online and in compliance with its inspection schedule.
HOW A DAS PROJECT RUNS
1
Site survey and design
Tell us the building. We run a pre-installation signal sweep, map the dead zones, and develop a conceptual design to code.
2
AHJ submission
We prepare and submit the design documentation to the Authority Having Jurisdiction and work through review and approval.
3
Coordination
A pre-installation meeting aligns schedule, cable pathways, equipment locations, and the other trades before any cable goes in.
4
Installation
Amplifiers, donor and interior antennas, cabling, and battery backup go in. Public-safety systems add the annunciator panel and emergency power-off.
5
Commissioning and acceptance
We configure and commission the system, run the final sweep and grid testing, and support the AHJ inspection.
6
Training and support
We train your designated personnel and put an ongoing maintenance plan in place.
SECTOR VS. BUYING THE HARDWARE
| Sector | Hardware only | |
|---|---|---|
| Survey and design | ✓Pre-install signal sweep, heat maps, and a design to code and carrier | ✗A box with no survey and no design |
| Approvals handled | ✓FCC and carrier rules for cellular, AHJ submission for public safety, worked for you | ✗You navigate code, carriers, and inspection yourself |
| Commissioning and acceptance | ✓Final sweep, grid testing, and the documentation the AHJ needs | ✗No commissioning, no acceptance record |
| Maintenance and warranty | ✓Quarterly maintenance, 24/7 remote support, RMA managed for you | ✗You file your own claims and chase the manufacturer |
FEATURED PRODUCTS FOR THIS SOLUTION
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CEL-FI GO G41 - Single-Operator Cellular Coverage Solution
Nextivity
Original price
$1,363.00
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Original price
$1,363.00
Original price
$1,363.00
$1,363.00
$1,363.00
-
$1,363.00
Current price
$1,363.00
Combining unmatched performance with ease of installation, CEL-FI GO G41 is a singleoperator cellular signal booster that delivers reliable in-buil...
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CEL-FI GO G41 FN - Cellular Coverage Solution for FirstNet®
Nextivity
Original price
$1,363.00
-
Original price
$1,363.00
Original price
$1,363.00
$1,363.00
$1,363.00
-
$1,363.00
Current price
$1,363.00
The CEL-FI GO G41 FN is a cellular coverage solution for AT&T signals, including FirstNet Band 14 to ensure reliable in-building FirstNet conne...
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CEL-FI GO G43 - Multi-Operator Cellular Coverage Solution
Nextivity
Original price
$5,249.00
-
Original price
$5,249.00
Original price
$5,249.00
$5,249.00
$5,249.00
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$5,249.00
Current price
$5,249.00
Designed to offer retailers, convenience stores, quick serve restaurants, and other small businesses a fast way to solving in-building cellular cov...
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CEL-FI GO G43 FN - Multi-Operator Cellular and FirstNet Coverage Solution
Nextivity
Original price
$5,249.00
-
Original price
$5,249.00
Original price
$5,249.00
$5,249.00
$5,249.00
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$5,249.00
Current price
$5,249.00
Designed to offer retailers, convenience stores, quick serve restaurants, and other small businesses a fast way to solving in-building cellular cov...
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CEL-FI QUATRA 4000/EVO Range Extender
Nextivity
Original price
$1,688.20
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Original price
$1,688.20
Original price
$1,688.20
$1,688.20
$1,688.20
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$1,688.20
Current price
$1,688.20
The CEL-FI QUATRA Range Extender (QRE) is a Power over Ethernet (PoE) device that extends the maximum distance between the CEL-FI QUATRA Network Un...
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CEL-FI QUATRA Fiber Range Extender
Nextivity
Original price
$1,428.30
-
Original price
$1,699.70
Original price
$1,428.30
$1,428.30
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$1,699.70
$1,428.30
-
$1,699.70
Current price
$1,428.30
Compatible with all CEL-FI QUATRA systems, the QUATRA Fiber Range Extender (QFRE) increases the distance between the Network Unit and the Coverage ...
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QUATRA EVO Coverage Unit
Nextivity
Original price
$1,821.00
-
Original price
$1,821.00
Original price
$1,821.00
$1,821.00
$1,821.00
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$1,821.00
Current price
$1,821.00
The Coverage Unit (CU) is the remote unit of the system that rebroadcasts the donor signal. The cost efficient and easy-to-deploy system leverages ...
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QUATRA EVO Network Unit
Nextivity
Original price
$3,148.00
-
Original price
$3,148.00
Original price
$3,148.00
$3,148.00
$3,148.00
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$3,148.00
Current price
$3,148.00
The Network Unit (NU) is the hub of the system. Each NU works with one to six Coverage Units (CU) for maximum scalability and design flexibility. ...
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CEL-FI QUATRA EVO FN - In-Building FirstNet Cellular Coverage Solution
Nextivity
Original price
$1,821.00
-
Original price
$3,148.00
Original price
$1,821.00
$1,821.00
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$3,148.00
$1,821.00
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$3,148.00
Current price
$1,821.00
Solving FirstNet cellular coverage challenges for enterprise environments, CEL-FI QUATRA EVO FN is an intelligent active DAS that offers uniform, h...
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QUATRA EVO Fiber Hub
Nextivity
Original price
$2,520.00
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Original price
$2,520.00
Original price
$2,520.00
$2,520.00
$2,520.00
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$2,520.00
Current price
$2,520.00
CEL-FI QUATRA EVO Fiber Hub expands the Network Unit capacity from six to up to twelve Coverage Units. The fiber hub can be installed 1.24 miles (2...
View full detailsBRANDS FOR THIS SOLUTION
Often, yes. Many jurisdictions require an Emergency Responder Radio Coverage System under IFC Section 510 and NFPA codes for new or large buildings, and the fire marshal can withhold a Certificate of Occupancy without one. We survey the building and design to your AHJ's requirements.
No. The systems are designed to be network-safe, and where a building needs both commercial and public-safety coverage, we keep them separate so they don't interfere with each other or the macro network.
All major carriers at once, not a single carrier.
A single system covers roughly 1.2 million square feet, and multiple units combine for facilities larger than that. We size it to your building from the survey.
No. This is cellular and two-way radio coverage. Phones and radios connect the way they already do, with no login or app, as people move through the building.
Have a building that drops signal?
Sector designs, installs, and supports in-building cellular and public-safety coverage for commercial, education, and government facilities. Tell us about your building and we'll scope it.