Interactive Reference Guide

ERCES System Components

Emergency Responder Communication Enhancement System — complete component reference with specifications and California code citations.

NFPA 1225 NFPA 72 UL 2524 CA Fire Code §510 UL Certified NICET Certified
Signal path — outdoor to in-building coverage
Public safety tower Donor antenna Surge suppressor BDA (amplifier) RF splitter Trunk cable / taps In-building antennas

Click any component card for full specifications, code references, and installation notes

Outdoor / Rooftop
Signal acquisition and building entry
4 components
Public safety tower
External — 700/800 MHz, VHF, UHF
Donor antenna
Rooftop, aimed at serving tower
Surge suppressor
Lightning protection at building entry
FD access panel
Radio test port for fire department
Head-End Equipment Room
BDA, power, and signal management
3 components
Bi-directional amplifier (BDA)
Core amplification — Class A or B, UL 2524
UPS / backup power
12-hr minimum runtime per NFPA 1225
Battery charger / management
Monitors charge state and temperature
Life-Safety Monitoring
FACP interface, remote monitoring, annunciation
3 components
Fire alarm control panel (FACP)
Receives ERCES supervisory alarms
Remote monitoring system
24/7 fault notification and diagnostics
Annunciator panel
Status display in lobby or fire command center
Distribution Infrastructure
Coax, splitters, taps, and in-line boosters
4 components
RF splitter / combiner
Divides signal by floor or zone
Coaxial trunk cable (riser)
½" or ⅞" plenum-rated vertical run
In-line tap / directional coupler
Per-floor signal drop from trunk
In-line signal booster
Compensates long cable run loss
In-Building Coverage Antennas
Omni, directional, and leaky coax radiating systems
3 components
Omni-directional antenna
Open floors and corridors — 360° coverage
Directional (panel) antenna
Stairwells, garages, elevator shafts
Leaky coax (radiating cable)
Tunnels, underground, dense concrete
Testing & Compliance
Coverage verification, AHJ acceptance, documentation
4 components
RF coverage testing
−95 dBm minimum — CA Fire Code §510
AHJ acceptance test
Walk-test before certificate of occupancy
Annual inspection
NFPA 1225 §14 ongoing compliance
Documentation package
Design drawings, survey, as-builts

Select any component above to view full specifications, code references, and installation notes.

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