In-Building Wireless

Cellular DAS.

Eliminate dead zones with carrier-grade in-building coverage.

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The WZC approach

Every floor.Every carrier.

Dropped calls and cellular dead zones cost productivity and frustrate occupants. WZC engineers in-building cellular that covers every floor and every carrier.

We deploy Nextivity (Cel-Fi), SOLiD, and Corning systems sized to your building and carrier mix.

  • CarriersAll four US networks
  • DistributionAll-RF over coax
  • Core unitMulti-carrier BDA
  • Bands600 MHz – 2.6 GHz
  • ApprovalCarrier-signed

How it works

System components

  • Coaxial DistributionLow-loss cable in fire-rated pathways with proper grounding.
Cellular DAS signal path: a multi-carrier donor tower feeds a roof donor antenna over a wireless link, into a bi-directional amplifier, then through passive splitters to indoor antennas on every floor.
ElementTypeFeedsRole
Multi-carrier towerdonor siteyagiCarrier macro site the building takes its signal from
Roof donordonor antennabdaRoof-mounted directional antenna aimed at the donor tower
BDAamplifierSP1, SP2, SP3Multi-carrier bi-directional amplifier, the one active element in the chain
Floor 3splitterCA1, CA2Passive splitter dividing RF power across the floor, no power required
CA1indoor antenna—Ceiling antenna radiating and receiving on its floor
CA2indoor antenna—Ceiling antenna radiating and receiving on its floor
Floor 2splitterCA3, CA4Passive splitter dividing RF power across the floor, no power required
CA3indoor antenna—Ceiling antenna radiating and receiving on its floor
CA4indoor antenna—Ceiling antenna radiating and receiving on its floor
Floor 1splitterCA5, CA6Passive splitter dividing RF power across the floor, no power required
CA5indoor antenna—Ceiling antenna radiating and receiving on its floor
CA6indoor antenna—Ceiling antenna radiating and receiving on its floor

Cellular DAS · multi-carrier donor to indoor antennas over coaxClick any node — or any step or component below — to inspect it. Illustrative topology; the real design is set by the site survey.

What you get

Built to perform

Multi-carrier coverage

Carrier-agnostic systems for full-building reach.

BDA & booster systems

Right-sized amplification for your floorplate.

Carrier coordination

We manage approvals where required.

Monitored & maintained

Optional 24/7 monitoring viaWireless Connect+.

System architecture

The carrier signal chain

CARRIER SIGNAL CHAIN — MACRO SITE TO FULL BARSCARRIER MACRO SITEBANDS A · B · CDONOR ANTENNA−95 dBm CAPTUREDMULTI-BAND BDAUP TO +70 dB GAIN, PER BANDSPLITTERS & COUPLERSBALANCED PASSIVE LOSSINDOOR ANTENNAS−65 dBm DELIVEREDUSER DEVICEFULL BARS · EVERY CARRIER
From the carrier macro site to full bars in the basement: WZC engineers gain, loss, and antenna placement at every link in the chain.
RF signal path (dashed = over-the-air)Multi-band amplificationStructure & passive distribution

How it works

Our process

  1. Assess

    Signal survey and carrier analysis.

  2. Design

    System sizing and component selection.

  3. Install

    Headend, cabling, and antennas.

  4. Verify

    Coverage testing and handoff.

Technician installing a donor antenna on a rooftop at sunsetDonor antennas — where every DAS begins

Why it matters

Coverage your occupants can feel

Dead zones in stairwells, elevators, and low-E glass offices are not an inconvenience — they are lost calls, lost productivity, and frustrated tenants. A properly engineered DAS makes them disappear.

Nextivity Cel-FiSOLiDCorningCarrier-agnostic

"Working with WZC took our company to another level in every regard. Their efficiency and customer service is unmatched. The best there is."

Glenn EtienneGlenn EtienneOperations Director, Anchor Hocking
Occupants working in a modern office with full indoor cellular coverageIn-building cellular
Engineer servicing headend equipment racksDAS headend

Questions

FAQs

Will this work for all carriers?
Yes, we design carrier-agnostic systems and coordinate carrier approvals when needed.
Is this the same as ERCES?
No. Cellular DAS serves commercial carriers;ERCESserves public-safety responder frequencies and is code-mandated. We do both.

Get started

Let's solve your wireless challenge

Tell us about your building and goals. A WZC engineer will get back to you within one business day.

Get a QuoteCall 248-946-4000