Atlanta-based design, installation, and AHJ acceptance testing for ADRF BDAs, DAS head-ends, and fiber remote units across the Southeast.
ADRF (Advanced RF Technologies) is one of the most widely deployed public-safety BDA and DAS manufacturers in North America, with UL 2524 listed amplifiers and FirstNet-ready cellular platforms used in tens of thousands of buildings. JB Technologies is an authorized ADRF integrator covering Atlanta, North Georgia, and the broader Southeast, and we specialize in using ADRF hardware to satisfy ERCES (Emergency Responder Communication Enhancement System) requirements under IFC Section 510, NFPA 1221, and NFPA 1225. Local AHJs across metro Atlanta including Atlanta Fire Rescue, Fulton County, DeKalb, Gwinnett, Cobb, and Forsyth require 95% critical-area and 90% general-area DAQ 3.0 coverage on the public-safety band, and ADRF platforms give us the channelized filtering, NMS reporting, and battery backup needed to pass. We handle the full lifecycle: iBwave RF design, donor antenna alignment, fiber and coax distribution, head-end termination, AHJ acceptance grid testing, annual re-certification, and integration with fire alarm supervisory circuits.
Class A channelized public-safety BDA supporting VHF, UHF, 700/800 MHz P25 with up to 32 software-defined filters per band, 5W downlink, and integrated NMS for AHJ-compliant ERCES coverage in mid-size buildings.
Software-defined fiber DAS platform supporting public-safety and cellular bands on the same fiber backbone, ideal for high-rises, hospitals, and campuses where multi-operator coverage is required alongside ERCES.
Compact Class B band-selective BDA for smaller buildings, parking decks, and tunnels where channelized filtering is not mandated, with 2W downlink output and front-panel diagnostics for quick AHJ walk-throughs.
Carrier-approved Integrated Cellular Enhancement BDA for AT&T, Verizon, T-Mobile, and FirstNet Band 14, providing in-building voice and LTE/5G coverage in offices, warehouses, and multi-tenant properties.
Single-mode fiber remote nodes that extend public-safety and cellular signal from the head-end to distributed coverage zones across multiple floors or buildings, simplifying riser cabling in tall structures.
Yagi, log-periodic, and panel donor antennas for rooftop signal capture, plus low-PIM omni and directional indoor DAS antennas rated for the 700/800 MHz public-safety bands and cellular re-radiation.
Cloud and on-premise SNMP/IP monitoring required by NFPA 1225 to report BDA failure, antenna disconnect, battery state, and donor signal degradation back to the building fire alarm panel and 24/7 monitoring center.
developments where ERCES is mandated at certificate of occupancy
concrete cores, basements, and shielded MRI/imaging suites
buildings under Georgia state ERCES adoption
that fail initial AHJ DAQ 3.0 grid testing
in Fulton, Gwinnett, and Henry counties
properties combining cellular DAS with public-safety BDA on shared infrastructure
Access control, video, life safety, structured cabling, and AV under one contract — fewer hand-offs when the system needs service.
Licensed Georgia low-voltage contractor; we pull permits and run inspections across metro Atlanta and the Southeast.
Field techs hold the manufacturer training relevant to the platforms we deploy, and we maintain the parts inventory to match.
Quarterly preventive visits, 24/7 on-call for life-safety events, and reporting your asset manager and lender will accept.
We walk every space in scope, document existing infrastructure, and identify the operational risks the design has to address.
Riser, sequence of operations, device schedule, and a binder mapped to the audit / AHJ / standards regime that applies.
Coordinated rough-in, terminations, integration with adjacent systems (access, video, fire, AV), and witnessed commissioning.
Owner training, documented as-builts, 12-month workmanship warranty, and an optional service agreement for the next lifecycle.
A public-safety BDA like the ADRF ADXV-PS V2 amplifies first-responder radio bands (VHF, UHF, 700/800 MHz P25) so police and fire can communicate inside the building during an emergency, and it is required by code. A cellular DAS like the ADRF SDR platform amplifies carrier signals (AT&T, Verizon, T-Mobile, FirstNet) for tenant convenience and is generally not required by code, though both can share fiber and antenna infrastructure when designed together.
Class A channelized BDAs (such as ADXV-PS V2) filter only the specific talkgroups and control channels licensed to the local agency, which is required by most Atlanta-area AHJs and by NFPA 1225 for new installations because it prevents oscillation and protects the donor site. Class B band-selective BDAs (ADX-V) pass the entire public-safety band and are typically only allowed on legacy systems or in jurisdictions that explicitly permit them.
We divide the building into a 20-by-20 grid per floor and measure DAQ 3.0 (Delivered Audio Quality) on the AHJ-licensed talkgroups in both directions. NFPA requires 95% coverage in critical areas (stairwells, fire command room, elevator lobbies, pump rooms) and 90% in general areas. The AHJ inspector witnesses the test, and JB Technologies provides the signed grid report, BDA commissioning data, and as-built documentation.
We start with a rooftop site survey using a calibrated spectrum analyzer to identify the strongest licensed agency tower, then select a Yagi or log-periodic donor with enough gain and front-to-back ratio to deliver clean signal without picking up interferers. Aim is locked using azimuth and tilt readings, weatherproofed, and re-verified during AHJ testing and at every annual re-cert.
The building owner is the FCC licensee for the signal booster under 47 CFR Part 90, and the public-safety agency that owns the radio system must grant written consent before the BDA is energized. JB Technologies handles the consent paperwork with Atlanta Police, Fulton County 911, or whichever agency holds the license, and we register the booster in the FCC database where required.
NFPA 1225 requires 24/7 supervision of the BDA, donor antenna, and battery backup, with any fault reported to the building fire alarm panel within 200 seconds. We use ADRF NMS to monitor the head-end remotely, tie alarm contacts into the FACP, perform annual grid re-tests, swap batteries on the manufacturer schedule, and provide the AHJ with the signed annual inspection report needed to keep the certificate of occupancy in good standing.
Tell us about your facility and we will scope the right design, sizing, and integration plan.
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