Building Signal Check™ — a proprietary scoping tool by Zion Fire Protection, LLC · Trademark application pending
ERCES Authority · By Zion Fire Protection

A Texas reference library on in-building public-safety radio.

Plain-English, primary-source-cited articles for building owners, GCs, and design teams trying to understand IFC §510, NFPA 1225, FCC 47 CFR §90.219, and what they mean for the buildings you own and build. Authored and reviewed by Joel Sadowsky (NICET III Fire Alarm, NICET III Special Hazards, FCC GROL).

Educational reference only. Not a code determination, legal opinion, or engineering report. Final determination of code applicability is made solely by your local Authority Having Jurisdiction.

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Articles

What is ERCES? An Owner's Guide to In-Building Public-Safety Radio

Zion Fire Protection | ercesauthority.com | Updated June 2026

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Public-Safety Radio Coverage in New and Existing Buildings: IFC §510 — 2021 and 2024 Editions Compared

Zion Fire Protection | ercesauthority.com | Updated June 2026

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NFPA 1225 Replaces NFPA 1221 — What Changed for ERCES Designers

Zion Fire Protection | ercesauthority.com | Updated June 2026

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The ERCES Annual Inspection Cycle — What Texas Building Owners Need to Know

Zion Fire Protection | ercesauthority.com | Updated June 2026

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Why Every BDA Project Starts with an AHJ Frequency Authorization Letter

Zion Fire Protection | ercesauthority.com | Updated June 2026

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UL 2524: What the Listing Standard Means for Your BDA Equipment Selection

Zion Fire Protection | ercesauthority.com | Updated June 2026

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