The difference

From dead zones to code-compliant coverage FAIL· 33% general coverage

A failing benchmark test is the legal trigger for an ERCES. Toggle the building below to see how a roof donor antenna, a COMBA bi-directional amplifier, and a coax riser carry public-safety signal to every floor, the outcome we engineer and then prove with an on-site grid test.

Loading building…

1.35 miDonor link
-61 dBmIncoming
27 dBmClass A BDA
33.9 hrLiFePO4 BBU
54Dome antennas
81,706Sq ft covered

Public-safety radio coverage by floor, before and after the ERCES install. Code minimum is 95% of general areas and 99% of critical areas at or above -95 dBm, per IFC 510 / NFPA 1225.
Floor	Riser gain	Before (dBm)	Before coverage	After (dBm)	After coverage
F7	10 dB → +9 dBm	-122	4%	-78	95%
F6	8 dB → +10 dBm	-118	8%	-74	96%
F5	8 dB → +10 dBm	-110	16%	-70	97%
F4	8 dB → +10 dBm	-104	27%	-67	99%
F3	5 dB → +13 dBm	-96	41%	-63	98%
F2	5 dB → +13 dBm	-88	58%	-60	99%
G	5 dB → +18 dBm	-72	78%	-58	99%
Whole building	—	—	33% · FAIL	—	98% general, 99% critical · PASS

Code minimum · ≥95% general / ≥99% critical @ ≥ -95 dBm · IFC 510 / NFPA 1225Illustrative, modeled on a real 7-floor project.