Thresholds — Field Card

Editions: 2024 IFC §510 + NFPA 1225-2022 Ch.18 + FCC §90.219. The fire code official can set the exact thresholds — confirm Savannah FMO numbers (../OPEN-ITEMS.md). Numbers and section numbers are facts; this card paraphrases — no code text reproduced.

Core numbers

What	Requirement	Cert	Where
Coverage — general area	signal in ≥ 95% of floor area, per floor	[Fact]	NFPA 1225 §18; IFC §510
Coverage — critical areas	signal in ≥ 99% of those areas	[Fact]	NFPA 1225 §18; IFC §510
Inbound signal (outside → in-building radio)	≥ −95 dBm	[Fact]*	NFPA 1225 §18 / NFPA 72
Outbound signal (in-building → dispatch)	≥ −95 dBm	[Fact]*	NFPA 1225 §18
Voice quality	≥ DAQ 3.0 (or equivalent SINR)	[Fact]	NFPA 1225 §18; IFC §510
Donor ↔ indoor antenna isolation	≥ system gain + 20 dB (no oscillation)	[Fact]	NFPA 1225 §18
Equipment listing	UL 2524 listed	[Fact]	IFC §510; NFPA 1225
Secondary (standby) power	required — 12 hr vs 24 hr	[Verify]	OPEN-ITEMS

* −95 dBm is the standard figure, but the code lets the fire code official set the exact level — confirm Savannah's number. [Verify]

Critical areas (the 99% list)

[Fact] Fire command center · fire pump rooms · interior exit stairways & exit passageways · elevator lobbies · standpipe cabinets · sprinkler sectional-valve locations · plus anything the fire code official designates.

Before you call pass/fail

• These are coverage / performance numbers only. Donor authorization (FCC §90.219 + licensee consent), monitoring/supervision, and survivable standby power are separate gates — see passfail-card.md.
• Anything not yet confirmed for Savannah is [Verify] in ../OPEN-ITEMS.md. Never present [Verify] as settled.

Sources: GA OCI – NFPA 1225 Ch.18 · UpCodes – IFC 510 ERCES · ICC – 2024 IFC §510

Pass/Fail Card — Field Card

Govern to 2024 IFC §510 + NFPA 1225-2022 Ch.18 + FCC §90.219. Confirm Savannah FMO specifics in ../OPEN-ITEMS.md. All gates must pass — coverage alone is not a pass.

A. Coverage / signal (numbers → thresholds.md)

• [ ] ≥95% of general floor area meets signal, per floor [Fact]
• [ ] ≥99% of critical areas meet signal [Fact]
• [ ] Inbound and outbound ≥ −95 dBm (or FMO-set level) [Fact]*
• [ ] Voice ≥ DAQ 3.0 (P25 equiv. ~SINR 18 dB / BER ≤2.5%) [Fact]
• [ ] Savannah grid: ≥20 grids/floor (20×20 ft; 40×40 if floor >32,000 sf); failed common-area grids within FMO limit [Verify]

B. RF integrity

• [ ] Donor↔indoor isolation ≥ system gain + 20 dB; no oscillation [Fact]
• [ ] BDA has anti-oscillation + per-channel AGC [Fact]
• [ ] Uplink noise / emissions within FCC limits (no donor-site interference) [Fact]

C. Authorization & equipment

• [ ] UL 2524-listed equipment [Fact]
• [ ] FCC §90.219 compliant + written licensee consent to retransmit (SEGARRN operator) [Fact]
• [ ] Class A (channelized) BDA per regional norm [Verify]
• [ ] Designer/lead tech: FCC GROL + training/mfr cert [Verify]

D. Power, survivability, monitoring

• [ ] Secondary power present + supervised — duration per FMO (12 vs 24 hr) [Verify]
• [ ] 2-hour rated pathway / CI cable (UL 2196) where required [Fact]
• [ ] Trouble signals to FACP/attended location: AC loss, low battery, amp fail, antenna/donor fault, oscillation [Fact]
• [ ] NEMA-4/4X enclosure; signage/labeling; Knox/access switch [Verify]

E. Paper

• [ ] Stamped design + as-built; grid datasheets per floor; cal certs (NIST ≤12 mo); FCC consent letter; UL listings
• [ ] Letter of Certification to FMO before CO; annual results → new Letter of Authorization [Verify]

REJECT if any gate fails or any required doc is missing. Log [Verify] items not yet ruled on — don't pass on assumption.

* exact dBm can be FMO-set. Sources: GA OCI NFPA 1225 Ch.18 · UpCodes IFC 510 · eCFR 47 §90.219

Contacts — Field Card

Numbers below are from official/public sources but change — confirm your direct FMO, radio-shop, and SEGARRN lines in person (see ../OPEN-ITEMS.md). Never act on an unconfirmed number for a licensee-consent or dispatch matter. Nothing here is fabricated; unknowns are marked [Verify].

Savannah (your office)

Who	Contact	Cert
Savannah Fire Rescue (main)	912-651-6756 · 121 E Oglethorpe Ave, Savannah 31401	[Fact]
Fire Marshal's Office — direct line/email	via main line; no separate published number found	[Verify]
City Radio Shop / SEGARRN system manager (licensee consent, freqs, donor site)	not public — get from FMO day 1	[Verify]

County / region

Who	Contact	Cert
Chatham County Fire (unincorporated)	(912) 219-0420 · 1249 Eisenhower Dr, Savannah 31406	[Fact]
Chatham County (general / fire svcs)	(912) 652-7175	[Fact]
Chatham 911 / Emergency Services	911 (emergencies) · admin line [Verify]	[Fact]/[Verify]

State

Who	Contact	Cert
GA Office of Insurance & Safety Fire Commissioner (OCI)	(404) 656-2070 · (800) 656-2298	[Fact]
GA State Fire Marshal	(470) 572-5722	[Fact]
GA DCA — Construction Codes	(404) 679-3118 · codes@dca.ga.gov	[Fact]

First-day asks (fill these in)

• FMO plan-review contact + ERCES submittal/forms → [Verify]
• Who issues licensee written consent to retransmit on SEGARRN → [Verify]
• Radio-shop POC for donor-site coordination + acceptance-test witness → [Verify]

Sources: Savannah Fire · Chatham Fire · GA OCI · ICC – Georgia

Frequencies — Field Card

Do not test, design, or pass against guessed frequencies. The exact channels/talkgroups are operational data from the system manager / city radio shop — get them in writing. Nothing here is invented; specifics are [Verify].

The system

• [Fact] The region runs on SEGARRN — Southeast Georgia Regional Radio Network, a P25 trunked public-safety system in the 700/800 MHz range serving Savannah/Chatham.
• [Verify] Control channels, talkgroups, donor-site frequencies, and call signs — not published on free public sources; obtain from the SEGARRN system manager / Savannah radio shop.

What the ERCES must do

• [Fact] Cover all frequencies the AHJ assigns for the building (the responder radio set actually used), inbound and outbound.
• [Fact] Operating a BDA on these frequencies requires FCC §90.219 compliance + written consent from the SEGARRN licensee before it goes live — confirm the consent letter exists. (→ fcc-spectrum.md when built.)
• [Verify] Donor antenna must be aimed/optimized to the correct SEGARRN donor site — coordinate with the radio shop.

Get-it-in-writing checklist

• [ ] SEGARRN bands + specific channels/talkgroups for this building → from radio shop [Verify]
• [ ] Which agency/licensee holds the FCC license + who signs retransmit consent [Verify]
• [ ] Donor site + recommended donor-antenna aiming [Verify]
• [ ] The exact portable radio model/freqs to use for the talk-in/out acceptance test [Verify]

Sources: RadioReference DB · eCFR 47 §90.219. SEGARRN specifics intentionally omitted until confirmed — see ../OPEN-ITEMS.md.

Master Inspection Checklist

How to use: fill every ____ and mark each item P / F / N/A. Record real numbers, not "ok". Anything that depends on an unconfirmed local rule is tagged [Verify] — note the FM's answer in the line. When done, save and upload this file and I'll analyze it (the RESULTS block at the bottom is what I parse first). Govern to 2024 IFC §510 + NFPA 1225-2022 Ch.18 + NFPA 72/IFC §907 + FCC §90.219; confirm editions in ../OPEN-ITEMS.md.

0. Header

• Date: ____ Inspector: ____ Type: ☐ Plan review ☐ Acceptance ☐ Annual ☐ Re-test
• Building / address: ____ Permit #: ____ Occupancy / stories / sq ft: ____
• Editions enforced today (from FMO): IFC ____ · NFPA 1225 ____ · NFPA 72 ____ [Verify]
• Systems present: ☐ ERCES/BDA ☐ Fire alarm ☐ Both

1. ERCES — applicability (IFC §510.1/.2)

• ☐ P ☐ F ☐ N/A — ERCES required? exterior/responder-radio coverage test result: ____ dBm [Fact] 510.1
• ☐ P ☐ F ☐ N/A — Construction + operational permits on file [Fact] 510.3

2. ERCES — signal & coverage (IFC §510.4.1 / NFPA 1225 §18.8–18.9)

Grid: ☐ 20×20 ft ☐ 40×40 ft (floor >32,000 sf) # grids/floor: ____ [Verify] Savannah spec | Floor | # grids | # pass (≥ thr) | % pass | Critical-area % | Min dBm in | Min dBm out | DAQ | |---|---|---|---|---|---|---|---| | __ | __ | __ | __% | __% | __ | __ | __ | | __ | __ | __ | __% | __% | __ | __ | __ | - ☐ P ☐ F — General areas ≥95% meet signal [Fact] §18.8.4 / 510.4.1.3 - ☐ P ☐ F — Critical areas ≥99% [Fact] §18.8.3 - ☐ P ☐ F — Inbound & outbound ≥ −95 dBm (or FMO level ____) [Fact] 510.4.1.1/.2 - ☐ P ☐ F — Voice ≥ DAQ 3.0* (P25 ~SINR 18 dB / BER ≤2.5%) [Fact] §18.8.2 - ☐ P ☐ F — Failed common-area grids within FMO limit (max ____) [Verify]

3. ERCES — RF integrity (NFPA 1225 §18.3)

• ☐ P ☐ F — Donor↔indoor isolation ≥ system gain + 20 dB; measured: gain __ dB, isolation __ dB [Fact] §18.3.2
• ☐ P ☐ F — No oscillation; anti-oscillation + per-channel AGC present [Fact] 510.4.2.4
• ☐ P ☐ F — Uplink noise / emissions within FCC limits; no donor-site interference [Fact] §18.6
• ☐ P ☐ F — Near-far / antenna density addressed [Fact] 510.4.2.8 / §18.3.4

4. ERCES — equipment & authorization

• ☐ P ☐ F — Equipment UL 2524 listed (models: ____) [Fact] §18.12
• ☐ P ☐ F — FCC §90.219 compliant + written licensee consent to retransmit on file [Fact] 510.5.5 / §18.7.2
• ☐ P ☐ F — Class A (channelized) BDA [Verify] · donor antenna gain __ dBi (cap ____) [Verify]
• ☐ P ☐ F — Designer/lead tech FCC GROL + training/mfr cert [Verify] 510.5.3

5. ERCES — power, survivability, monitoring (IFC §510.4.2 / NFPA 1225 §18 / NFPA 72)

• ☐ P ☐ F — Secondary power present + supervised; duration ____ hr (FMO req __ hr) [Verify]
• ☐ P ☐ F — Standby load test result: ____ [Fact]
• ☐ P ☐ F — 2-hr rated pathway / CI cable (UL 2196) where required [Fact]
• ☐ P ☐ F — Trouble signals to FACP/attended: ☐AC loss ☐low batt ☐charger ☐amp fail ☐antenna ☐donor ☐oscillation [Fact] 510.4.2.5
• ☐ P ☐ F — NEMA-4/4X enclosure · signage/labeling · Knox/access switch [Verify]

6. Fire alarm (NFPA 72 / IFC §907)

• ☐ P ☐ F ☐ N/A — FA system required & provided per §907 [Fact]
• ☐ P ☐ F — Secondary power 24 hr (or 8 hr w/ approved risk analysis) [Fact]
• ☐ P ☐ F — Record of Completion + inspection/testing form executed [Fact]
• ☐ P ☐ F — Off-premises monitoring (alarm/supervisory/trouble distinct) [Fact]
• ☐ P ☐ F — Devices tested: ☐control unit ☐annunciators ☐initiating ☐notification (audible/visible) ☐HVAC shutdown ☐elevator recall ☐door release
• ☐ P ☐ F — Exact NFPA 72 ITM cadence/sections verified vs adopted edition [Verify]

7. ERCES ↔ fire-alarm interface

• ☐ P ☐ F — ERCES faults supervised by / annunciated through the FA system (where required) [Fact]
• ☐ P ☐ F — ERCES trouble at building FACP vs separate annunciator [Verify]

8. Documentation

• ☐ stamped design + as-built ☐ grid datasheets/floor ☐ cal certs (NIST ≤12 mo, date __)
• ☐ FCC licensee consent letter ☐ UL 2524 listings ☐ FA Record of Completion
• ☐ ERCES Letter of Certification (acceptance) / annual Letter of Authorization [Verify]

---

RESULTS (machine-parsed on upload — keep these keys)

building: ____
date: ____
type: ____            # plan-review | acceptance | annual | re-test
editions: IFC=____ NFPA1225=____ NFPA72=____
erces_coverage_general_pct: ____
erces_coverage_critical_pct: ____
erces_min_inbound_dBm: ____
erces_min_outbound_dBm: ____
erces_daq: ____
erces_isolation_margin_dB: ____
erces_standby_hours: ____
fire_alarm_present: yes/no
fire_alarm_secondary_hours: ____
licensee_consent_on_file: yes/no
ul2524_listed: yes/no
overall: PASS / FAIL / CONDITIONAL
fail_items: [ ____ ]          # list the failed line(s)
verify_open: [ ____ ]         # [Verify] items not yet ruled by FMO
violations_cited: [ §____ : ____ ]
notes: ____

* −95 dBm is the standard; the fire code official can set the level — confirm. See ../10-code/citation-map.md for every §, ../OPEN-ITEMS.md for unresolved local rules.

Field-Test Datasheet — Floor ____

Building: ____ Date: ____ Tech: ____ Radio (model/agency): ____ Instrument + cal cert #/date (NIST ≤12 mo): ____ Editions: IFC ____ / 1225 ____ Grid size: ☐ 20×20 ft ☐ 40×40 ft Required level: ____ dBm DAQ min: 3.0

Grid #	Location	Critical?	Inbound dBm	Outbound dBm	DAQ	P/F
1	____	☐	____	____	____	☐
2	____	☐	____	____	____	☐
3	____	☐	____	____	____	☐
…

Totals — General: __/__ = __% (need ≥95%) · Critical: __/__ = __% (need ≥99%) Isolation: gain __ dB / isolation __ dB (need ≥ gain+20) · Oscillation: ☐none Standby test: ____ · Faults annunciated at FACP: ☐AC ☐batt ☐amp ☐antenna ☐donor ☐osc Floor result: ☐ PASS ☐ FAIL Notes: ____

Plan-Review Checklist (printable)

Project: ____ Permit #: ____ Reviewer: ____ Date: ____

#	Item	Rule	OK	N/A
1	Stamped design (GA PE [Verify]) + designer FCC GROL/cert	510.5.3	☐	☐
2	RF design + link budget	§18.9	☐	☐
3	Floor plans: antenna layout + grid; critical areas marked	§18.8.3/.4	☐	☐
4	Standby-power calc (hrs [Verify])	510.4.2.3	☐	☐
5	Cut sheets — UL 2524; BDA Class A [Verify]	§18.12	☐	☐
6	Donor antenna type/gain/aim	510.5.1	☐	☐
7	Isolation ≥ gain + 20 dB shown	§18.3.2	☐	☐
8	FCC §90.219 + written licensee consent	510.5.5/§18.7.2	☐	☐
9	Monitoring points + FACP annunciation	510.4.2.5	☐	☐
10	2-hr pathway where required	—	☐	☐
11	Enclosure/signage/Knox	[Verify]	☐	☐

Disposition: ☐ Approved ☐ Approved w/ comments ☐ Rejected Reviewer sign: ____

Inspection Report

Building / address: ____ Permit #: ____ Occupancy: ____ Date: ____ Inspector: ____ Type: ☐Plan review ☐Acceptance ☐Annual ☐Re-test Editions enforced: IFC ____ / NFPA 1225 ____ / NFPA 72 ____

Systems

• ERCES: ☐ Pass ☐ Fail ☐ N/A Fire alarm: ☐ Pass ☐ Fail ☐ N/A Interface: ☐ Pass ☐ Fail

Key results

Coverage gen/crit: __% / __% · min in/out dBm: __ / __ · DAQ: __ · isolation margin: __ dB ERCES standby: __ hr · FA standby: __ hr · licensee consent on file: ☐yes ☐no · UL 2524: ☐yes ☐no

Findings / violations (cite §)

1. ____ — §____
2. ____ — §____

Disposition

☐ Approved / Letter of Certification (or Authorization) issued ☐ Conditional — items due by ____ ☐ Rejected — NOV issued (notice-of-violation.md) Open [Verify] carried: ____ Inspector sign: ____

Notice of Violation

To (owner/agent): ____ Building / address: ____ Permit #: ____ Issued by: ____ Date: ____ NOV #: ____

#	Violation (plain language)	Code citation	Correction required	Due
1	____	§____	____	____
2	____	§____	____	____

Re-inspection: ☐ required on/after ____ Penalty for non-compliance: ____ [Verify]

Not a legal determination — issued under the authority of the Fire Marshal / AHJ. Inspector sign: ____ Received by: ____

Citation Map

IFC §510 outline verified on UpCodes; NFPA 1225 Ch.18 numbers verified from the GA OCI copy. Which edition Savannah enforces is [Verify] (P0 in ../OPEN-ITEMS.md) — that decides which §s actually bind. No code text reproduced; numbers/§s are facts.

ERCES — requirement → citation

Requirement	2024 IFC §510	NFPA 1225-2022 Ch.18	Cert
Required — new buildings	510.1	—	[Fact]
Required — existing buildings	510.2	—	[Fact]
Permits (constr. + operational)	510.3 / .3.1 / .3.2	18.7 Approval & Permit; 18.7.1 Plans	[Fact]
Min signal into building (inbound/downlink)	510.4.1.1	18.9.1 Downlink	[Fact]
Min signal out of building (outbound/uplink)	510.4.1.2	18.9.2 Uplink	[Fact]
System performance / DAQ	510.4.1.3	18.8.2 (max acceptable / quality)	[Fact]
Coverage — general areas (95%)	510.4.1.3	18.8.4 General building areas	[Fact]
Coverage — critical areas (99%)	510.4.1.3	18.8.3 Critical areas	[Fact]
Amplifiers / components	510.4.2.1	18.12 System Components	[Fact]
Oscillation detection/control + isolation	510.4.2.4	18.3.2 (oscillation)	[Fact]
Standby power	510.4.2.3	18.3.1 Enclosures/battery power	[Fact]
System monitoring / supervisory signals	510.4.2.5 / .5.1	within Ch.18	[Fact]/[Inference]
Added / changed frequencies	510.4.2.6	18.11 / 18.11.1 / 18.11.2	[Fact]
Design documents / plans	510.4.2.7	18.7.1 Plans	[Fact]
Near-far effect / antenna density	510.4.2.8	18.3.4 Communication Antenna Density	[Fact]
Noise / non-interference	510.4.2.9	18.6 Non-Interference; 18.9.3 noise floor	[Fact]
Donor antenna mounting/coax/grounding	510.5.1	18.3.3 Mounting; 18.4.x coax/discharge; 18.10 Donor Antenna	[Fact]
Approval prior to install	510.5.2 / .5.2.1	18.2 Approval	[Fact]
Personnel qualifications (FCC GROL + cert)	510.5.3	18.2.2 (qualified designer)	[Fact]
Acceptance test procedure	510.5.4	18.5 Testing Requirements	[Fact]
FCC compliance + licensee written consent	510.5.5	18.7.2 Written consent from RF licensee	[Fact]
Maintenance / annual	510.6	18.5 Testing & maintenance	[Fact]
Equipment listed to UL 2524	510.4.2 components	18.12.1.x (listed RF devices/repeaters)	[Fact]
FCC signal-booster rules	—	— → 47 CFR §90.219	[Fact]

Fire-alarm interface (you inspect this alongside the FA system)

Requirement	Where	Cert
ERCES trouble/supervisory signals annunciated at the FACP / constantly-attended location	NFPA 72 (monitoring of integrity) + IFC 510.4.2.5	[Fact]/[Verify] §
Fire-alarm systems — installation/where required	IFC §907; NFPA 72	[Fact]
Monitored faults: AC loss, low/depleted battery, charger fail, amp/booster fail, antenna & donor disconnect, oscillation	IFC 510.4.2.5; NFPA 72 supervision	[Fact]
Secondary power / 2-hr survivable pathway for the alarm + ERCES circuits	NFPA 72; IFC §510 / §907	[Fact]/[Verify]
Adopted NFPA 72 edition (drives the above specifics)	—	[Verify] (P0)

NFPA 72 section-level pinpoints are [Verify] until the adopted NFPA 72 edition is confirmed and checked on the free portal — see fire-alarm-and-erces.md and ../OPEN-ITEMS.md.

Sources: UpCodes IFC 510 · GA OCI NFPA 1225 Ch.18 · eCFR 47 §90.219

Code Stack

Which edition Georgia/Savannah enforces is [Verify] (P0 in ../OPEN-ITEMS.md). Govern to: 2024 IFC + NFPA 1225-2022 Ch.18 + NFPA 72 + UL 2524 + FCC 47 CFR Part 90.

The documents

Document	Role	Key location	Cert
2024 IFC §510	When an ERCES is required + the building-code technical hooks; defers detail to NFPA 1225	IFC Ch.5 §510	[Fact]
2024 IFC §907 (Ch.9)	Where fire alarm & detection systems are required + commissioning	IFC Ch.9 §907	[Fact]
NFPA 1225-2022 Ch.18	The ERCES technical standard — coverage, signal, isolation, donor, testing, components, licensee consent	Ch.18 (§18.1–18.12)	[Fact]
NFPA 72	National Fire Alarm & Signaling Code — fire-alarm install/test/maint and supervision/monitoring of the ERCES	NFPA 72 (Ch. on ITM + supervising station)	[Fact]/[Verify] ed.
UL 2524	Product listing standard for in-building 2-way ERCES equipment	UL 2524	[Fact]
FCC 47 CFR Part 90 (§90.219)	Signal-booster rules + licensee written consent to retransmit on public-safety LMR	eCFR Title 47 §90.219	[Fact]

How the pieces fit

• IFC says whether you need an ERCES (§510) and a fire-alarm system (§907); NFPA 1225 Ch.18 says how the ERCES must perform; NFPA 72 governs the fire-alarm system and the supervision of the ERCES (faults annunciate at the FACP); UL 2524 is what the equipment must be listed to; FCC Part 90 controls the RF (you cannot energize a BDA without the licensee's written consent — IFC 510.5.5 / NFPA 1225 §18.7.2).
• Fire-alarm tie-in (for joint inspections): the ERCES is a monitored, supervised system off the fire-alarm infrastructure. Fire-alarm secondary power = 24 hr (NFPA 72; or 8 hr with AHJ-approved risk analysis) — note this is a separate number from the ERCES standby-power question. See fire-alarm-and-erces.md.

Georgia adoption tracks (who adopts what)

• [Fact] GA Safety Fire Commissioner / OCI adopts and amends the IFC for fire-safety enforcement — this is the version that binds the fire inspector, not DCA's base text.
• [Fact] GA DCA (Construction Codes) maintains the base I-Codes (building track).
• [Fact] 2024 IFC is the Georgia statewide edition, effective 2026-01-01.
• [Verify] Which NFPA 1225 edition (2022 vs 2025) and NFPA 72 edition Georgia/Savannah reference, and any City of Savannah local amendments to §510. → P0 in ../OPEN-ITEMS.md.

Sources: UpCodes IFC 510 · GA OCI NFPA 1225 Ch.18 · eCFR 47 §90.219 · ICC – Georgia

Edition Deltas

Why this file exists: the City of Savannah's published BDA/ERRCS guide is 2018-IFC-based, while Georgia's statewide edition is 2024 IFC (eff. 2026-01-01). Know the gap so you don't cite a superseded rule.

IFC 2018 → 2024 §510

• [Fact] Rename: "Emergency Responder Radio Coverage (ERRC)" → "Emergency Responder Communication Enhancement System (ERCES)." Same system, new term — match the submittal's vocabulary to the edition in force.
• [Fact] Defers technical detail to NFPA 1225. The 2024 §510 leans on NFPA 1225 Ch.18 for the performance/technical specs rather than spelling them all out in the IFC.
• [Fact] Restructured subsections (verified outline): 510.1 new / 510.2 existing / 510.3 permits / 510.4 technical (signal, system design, standby, monitoring, near-far, noise) / 510.5 installation (donor mounting, approval, personnel quals, acceptance test, FCC compliance) / 510.6 maintenance.
• [Inference] Net effect: stronger emphasis on monitoring/supervision, documentation, personnel qualifications, and FCC/licensee consent vs the 2018 text.

NFPA 1221 → NFPA 1225

• [Fact] NFPA 1225-2022 consolidated and superseded NFPA 1221 (emergency services comms). ERCES radio-coverage requirements now live in NFPA 1225 Chapter 18. Older references to "NFPA 1221" point to the predecessor.
• [Verify] Whether GA/Savannah references NFPA 1225-2022 or -2025 (2025 strengthens the fire-alarm supervision interface). → P0 in ../OPEN-ITEMS.md.

Isolation requirement history

• [Fact] The donor↔indoor isolation margin was raised to ≥ system gain + 20 dB (up from a prior +15 dB) to keep margin as buildings/RF change post-install. Use +20 dB.

The practical rule

• When a submittal or the city guide cites a 2018 number, map it to the in-force edition before you accept or cite it. If the in-force edition isn't confirmed, treat the citation as [Verify] and log it.

Sources: UpCodes IFC 510 · GA OCI NFPA 1225 Ch.18

Fire Alarm & the ERCES Interface

Govern to NFPA 72 + IFC §907, plus IFC §510 / NFPA 1225 §18 for the ERCES tie-in. Adopted NFPA 72 edition is [Verify] (P0) — it sets the exact sections. No code text reproduced.

Fire-alarm essentials (NFPA 72 / IFC §907)

• [Fact] Where required: IFC §907 lists the occupancies/conditions that mandate a fire-alarm & detection system.
• [Fact] Secondary (standby) power: 24 hr standby, then alarm load (commonly 5 min) — or 8 hr only with an AHJ-approved risk analysis. (This is the FA number; the ERCES standby duration is a separate [Verify] item.)
• [Fact] Acceptance package: executed NFPA 72 Record of Completion, the inspection & testing form, and the supervising-station / monitoring agreement before acceptance.
• [Fact] Monitoring: alarm, supervisory, and trouble must be distinct signals; off-premises monitoring via a listed supervising station (24-hr).
• [Fact] What gets tested: control unit, secondary power/batteries, remote annunciators, initiating devices, notification appliances (audible/visible), and interfaced functions (e.g., HVAC shutdown, elevator recall, door release).
• [Verify] Exact NFPA 72 chapter/section pinpoints (ITM cadence, ECS provisions) — confirm against the adopted edition on the free portal.

How the ERCES rides on the fire alarm

• [Fact] The ERCES is a monitored, supervised system. These faults must annunciate at the FACP / constantly-attended location: AC power loss, low/depleted battery, charger failure, signal-booster/amplifier failure, antenna malfunction, donor-antenna disconnect, and oscillation (IFC 510.4.2.5; NFPA 1225 §18; NFPA 72 supervision).
• [Fact] Survivability: ERCES (and FA) circuits requiring it use a 2-hour rated pathway / CI cable (UL 2196).
• [Verify] Whether Savannah requires ERCES trouble at the building FACP specifically vs a separate annunciator, and the ERCES standby duration (12 vs 24 hr). → ../OPEN-ITEMS.md.

Joint-inspection quick logic

1. FA system itself compliant (NFPA 72 / §907) → see the FA section of the master checklist.
2. ERCES present where required (§510) and its faults supervised by / annunciated through the FA system.
3. Both have compliant secondary power (FA 24 hr; ERCES per FMO) and survivable pathways.
4. Paperwork: FA Record of Completion and ERCES Letter of Certification/Authorization.

Sources: NFPA 72 · UpCodes IFC 510 · Portland FA acceptance checklist (reference)

When Required

Editions enforced are [Verify] (P0, ../OPEN-ITEMS.md). Numbers/§s are facts; paraphrased.

The trigger

• [Fact] An ERCES is required when in-building responder-radio coverage fails the minimum — i.e., the building can't meet the signal/coverage thresholds (../00-quickref/thresholds.md) on its own. Demonstrated by a radio coverage test. (IFC §510.1 new; §510.2 existing; NFPA 1225 §18.8.)
• [Fact] New buildings: §510.1. Existing buildings: §510.2 (typically on change of use / major reno, or when found deficient).

Exemptions (confirm exact figures locally)

• [Verify] Small-building exemptions exist (commonly tied to stories / floor area / no below-grade floors), but the exact cutoffs are edition/AHJ-specific — confirm Savannah's numbers before exempting anything. Do not quote an exemption threshold from memory.
• [Inference] Where adequate coverage is already demonstrated by test, no system is required — but get the passing test documented and accepted by the FMO.

Inspector logic

1. Coverage test at the building → meets thresholds? No system needed (document it).
2. Fails → ERCES required (§510.1/.2). Move to plan review (../30-plan-review/).
3. Existing building deficient on a periodic/triggered test → §510.2 path.

Sources: UpCodes IFC 510 · GA OCI NFPA 1225 Ch.18

Plan-Review Submittal Checklist

Reject incomplete submittals. Each item cites where it's required. [Verify] = confirm Savannah's exact form/threshold.

• [ ] Stamped design — signed/sealed by a GA-licensed PE (or FMO-accepted designer) [Verify] (confirm GA PE-stamp requirement) · designer FCC GROL + training/mfr cert (IFC 510.5.3) [Fact]
• [ ] RF design + link budget — gain, losses, donor signal, predicted in-building levels (NFPA 1225 §18.9) [Fact]
• [ ] Coverage plan — floor plans showing antenna layout + the grid to be tested; general vs critical areas marked (§18.8.3/.4) [Fact]
• [ ] Standby-power calc — battery sizing for required duration (12 vs 24 hr [Verify]) + alarm load (IFC 510.4.2.3) [Fact]/[Verify]
• [ ] Equipment cut sheets — all RF devices UL 2524 listed; BDA class (expect Class A) [Fact]/[Verify]
• [ ] Donor antenna — type, gain (cap [Verify]), mounting/aiming to the SEGARRN site (510.5.1; §18.3.3/18.10) [Fact]
• [ ] Isolation — design shows donor↔indoor isolation ≥ system gain + 20 dB (§18.3.2) [Fact]
• [ ] FCC — §90.219 compliance + written licensee consent to retransmit (510.5.5 / §18.7.2) [Fact]
• [ ] Monitoring/supervision — fault points + annunciation at FACP/attended location (510.4.2.5) [Fact]
• [ ] Survivability — 2-hr pathway / CI cable where required [Fact]
• [ ] Enclosure/signage — NEMA-4/4X, labeling, Knox/access [Verify]

See red-flags.md for the defects these catch, and ../10-code/citation-map.md for every §.

Plan-Review Red Flags

Red flag	Why it fails	Rule
No FCC licensee consent letter	Can't legally retransmit on SEGARRN	510.5.5 / §18.7.2 [Fact]
Class B (broadband) where Class A expected	Interference risk; regional norm is channelized	[Verify] (confirm Savannah)
Isolation < system gain + 20 dB	Oscillation / donor-site interference	§18.3.2 [Fact]
System gain > ~75 dB / no AGC	Pushes AGC/OLC, noise rise	[Inference]
No standby-power calc or wrong hours	Won't survive outage	510.4.2.3 + [Verify] hrs
No 2-hr pathway where required	Loses comms in fire	[Fact]
Equipment not UL 2524 listed	Not code-listed	510.4.2 / §18.12 [Fact]
Missing monitoring points / FACP annunciation	Faults go unnoticed	510.4.2.5 [Fact]
Donor antenna gain excessive / wrong aim	Overload, near-far, interference	§18.3.3 + [Verify] cap
Citations to 2018 IFC / NFPA 1221	Superseded edition	see ../10-code/edition-deltas.md
No critical-area designation on plans	Can't verify 99%	§18.8.3 [Fact]

Acceptance Test Procedure

Govern to NFPA 1225 §18.5 + IFC 510.5.4. Confirm Savannah specifics (../OPEN-ITEMS.md). Use the datasheet in ../templates/field-test-datasheet.md; decide with ../00-quickref/passfail-card.md.

Before you start

1. [Fact] FCC licensee consent on file; system energized legally.
2. [Fact] Test gear NIST-cal ≤12 mo (equipment-and-cal.md); portable radio matches the responding agency's.
3. Confirm editions enforced + the FMO signal level (−95 dBm default) [Verify].

Test

4. [Fact] Talk-out (uplink): from inside each grid, key to dispatch/base; confirm reception + voice quality.
5. [Fact] Talk-in (downlink): from outside/base to the in-building portable; confirm.
6. [Fact] Grid walk (grid-method.md): measure inbound & outbound dBm and DAQ at each grid center; record all (not just pass/fail).
7. [Fact] Isolation test: verify donor↔indoor ≥ gain + 20 dB; no oscillation (§18.3.2).
8. [Fact] Monitoring test: trip each fault (AC loss, low batt, amp/antenna/donor, oscillation) → confirm annunciation at FACP/attended (510.4.2.5).
9. [Fact]/[Verify] Standby-power test: run on secondary power; confirm duration (12/24 hr per FMO).

Pass / paper

10. Pass = ≥95% general / ≥99% critical grids meet level + DAQ, AND all gates above (passfail-card.md).
11. [Verify] Submit Letter of Certification + grid datasheets to FMO before CO.

Sources: GA OCI NFPA 1225 Ch.18 · UpCodes IFC 510

Grid Method

NFPA 1225 §18.8 coverage; Savannah grid specifics [Verify] against the City BDA doc.

The method

• [Fact] Divide each floor into an approximately uniform grid; measure at the center of each grid square.
• [Verify] Savannah: ≥ 20 grids per floor, squares 20×20 ft; floors > 32,000 sf may use 40×40 ft. Confirm against the current City BDA doc.
• [Fact] Record inbound & outbound dBm and DAQ at each square.

Pass criteria

• [Fact] General areas: ≥ 95% of grids meet the level (−95 dBm or FMO level) + DAQ ≥ 3.0.
• [Fact] Critical areas: ≥ 99% of grids.
• [Verify] Savannah may cap how many failed grids are allowed in common areas (e.g., "no more than N") — confirm.

Worked example (20-grid floor)

• General floor, 20 grids. Results: 19 grids ≥ −95 dBm, 1 grid at −98 dBm.
• 19/20 = 95% → PASS (meets ≥95%), if the 1 failing grid is within the FMO's allowed-failures rule [Verify].
• Same floor's critical area = 5 grids (stair + elevator lobby + pump room). Results: 5/5 ≥ −95 dBm = 100% → PASS (needs ≥99%, i.e., effectively all).
• Flip it: if 2 of 20 general grids fail → 18/20 = 90% → FAIL (below 95%); re-engineer coverage.

Numbers are illustrative of the math, not Savannah-confirmed thresholds. Confirm the level + failed-grid rule (../OPEN-ITEMS.md).

Sources: GA OCI NFPA 1225 Ch.18 · Savannah Fire

Test Equipment & Calibration

• [Fact] Instrument: P25-capable service monitor or spectrum analyzer covering 700/800 MHz + P25; able to read signal power (dBm) and demodulate for DAQ/BER.
• [Fact] Calibration: NIST-traceable, ≤ 12 months; verify the cal date/cert before testing — expired cal invalidates the test.
• [Fact] Settings (typical): RBW ~10 kHz for narrowband PS signals; VBW ~⅓ RBW; enable preamp for weak signals; Max-Hold to catch variation.
• [Fact] DAQ: P25 equivalent ≈ SINR ≥ 18 dB / BER ≤ 2.5% for DAQ 3.0.
• [Fact] Talk radio: use a calibrated portable matching the responding agency's current model/freqs (coordinate with the radio shop [Verify]).
• [Inference] Capture screenshots/logs per grid for the report.

Sources: Anritsu — ERCES test solution

BDA / DAS / Donor Antenna

Pieces

• [Fact] BDA (bi-directional amplifier): captures the outdoor donor signal, amplifies, redistributes indoors via the DAS (distributed antennas); amplifies both directions.
• [Fact] Donor antenna: directional antenna aimed at the SEGARRN site; provides isolation + the outside link.

Class A vs Class B (FCC §90.219)

• [Fact] Class A = channelized (narrow passband, ~≤ 75 kHz): amplifies only the assigned channels; filters the rest. Preferred/expected for public safety.
• [Fact] Class B = broadband (passband > 75 kHz): amplifies the whole band indiscriminately; higher interference risk; FCC registration.
• [Verify] Confirm Savannah requires Class A.

RF gotchas (acceptance failures)

• [Fact] Isolation ≥ system gain + 20 dB (donor↔indoor). Under it → oscillation (BDA amplifies its own re-radiation → saturation, noise rise at the donor site).
• [Fact] Desensitization: BDA uplink noise raises the base-station noise floor → shrinks the public-safety coverage. Keep uplink noise/emissions within FCC limits.
• [Inference] Typical system gain ~60–75 dB; high gain w/o margin trips AGC/OLC. FCC output power capped (≈ 5 W) per §90.219.

Sources: eCFR 47 §90.219 · GA OCI NFPA 1225 Ch.18

Power & Survivability

Standby power

• [Fact] Secondary power required, supervised (IFC 510.4.2.3; NFPA 1225 §18).
• [Verify] Duration: 12 hr vs 24 hr. IFC/NFPA baseline is commonly 12 hr; many AHJs amend to 24 hr. Confirm Savannah (P0). (Note: the fire-alarm system's secondary power is 24 hr — different number; see ../10-code/fire-alarm-and-erces.md.)
• [Inference] Battery or generator-backed; if battery, sized for the full duration at 100% system load.

Worked battery-sizing example (illustrative)

• Suppose system draws 3.0 A at 24 VDC standby. For a 24 hr requirement:
• Energy = 3.0 A × 24 h = 72 Ah before deratings.
• Add temperature/age derating (~20–25%) → size ≈ 72 / 0.8 ≈ 90 Ah.
• For a 12 hr requirement → ≈ 45 Ah derated.
• [Verify] Use the actual standby + alarm load from the cut sheets and the FMO's hours; confirm the load test (commonly a timed run on secondary power).

Survivability

• [Fact] Where required, 2-hour fire-rated pathway / CI cable (UL 2196) for the ERCES (and interfaced FA) circuits.
• [Verify] Which pathways Savannah requires rated (everywhere vs conditioned).

Sources: UpCodes IFC 510 · GA OCI NFPA 1225 Ch.18

Monitoring & Supervision

IFC 510.4.2.5; ties to the fire alarm (NFPA 72) — see ../10-code/fire-alarm-and-erces.md.

Required fault/trouble signals

• [Fact] AC power loss to the ERCES
• [Fact] Low / depleted battery and charger failure
• [Fact] Signal-booster / amplifier failure
• [Fact] Antenna malfunction and donor-antenna disconnect
• [Fact] Oscillation detected
• [Fact] All annunciate at the FACP / constantly-attended location; distinct from alarm signals.

Physical

• [Verify] NEMA-4 / 4X enclosure where the environment requires.
• [Verify] Signage / labeling (RF, system ID, disconnect) per FMO.
• [Verify] Knox box / access switch location + posted operation.

Inspector test

• Trip each fault above → confirm it reports correctly (part of acceptance + annual).

Sources: UpCodes IFC 510

FCC & Spectrum

The legal gate. No consent = the BDA cannot operate, regardless of RF performance.

• [Fact] 47 CFR §90.219 governs signal boosters on Part 90 (public-safety LMR) frequencies. Class A (channelized) vs Class B (broadband).
• [Fact] Written consent from the FCC licensee (the agency/operator that holds the SEGARRN license) is required before a booster operates on their frequencies. (Mirrored in IFC 510.5.5 / NFPA 1225 §18.7.2.)
• [Fact] Equipment must hold FCC equipment authorization / type acceptance.
• [Fact] Booster must not cause harmful interference; operator must cease/correct on demand; emissions limited.
• [Verify] Who at the SEGARRN operator / city radio shop signs the consent, and the form. → ../OPEN-ITEMS.md P3.

Sources: eCFR 47 §90.219 · GA OCI NFPA 1225 Ch.18

Annual Test & Maintenance

IFC 510.6; NFPA 1225 §18.5. Confirm Savannah's annual process (../OPEN-ITEMS.md).

Cadence

• [Fact] Annual test/inspection, and whenever structural/material changes could affect coverage (additions, remodels, new adjacent construction blocking the donor).
• [Inference] No fixed "5-year reacceptance" in NFPA 1225 Ch.18 — treat any 5-yr figure as jurisdiction-specific [Verify].

Scope

• [Fact] Grid re-test (signal/DAQ across floors + critical areas) — 40-field-test/grid-method.md.
• [Fact] Hardware inspection: donor + DAS antennas, BDA, cabling for damage.
• [Fact] Battery / standby performance (timed load test).
• [Fact] Fault/monitoring test (all points report to FACP).
• [Fact] Gain/baseline comparison vs the acceptance baseline.

Baseline & disposition

• [Verify] Deviation that forces re-commissioning (e.g., > 3 dB drop vs baseline) — confirm Savannah's threshold.
• [Verify] Annual results submitted to FMO → new Letter of Authorization (valid ~1 yr). Confirm form/timeline.

Sources: UpCodes IFC 510 · GA OCI NFPA 1225 Ch.18

Decision Trees

• Coverage test at building? Meets thresholds → no system required (document). Fails → ERCES required (§510.1 new / §510.2 existing).
• No written FCC licensee consent? → Stop. Cannot energize/accept regardless of RF (510.5.5 / §18.7.2).
• Isolation < system gain + 20 dB / oscillation present? → Fail; re-engineer (more separation, directional donor, lower gain) before acceptance (§18.3.2).
• One general grid fails (e.g., 19/20)? → 95% met; pass only if within the FMO's failed-grid allowance [Verify]. Two fail (18/20=90%) → Fail.
• Any critical-area grid fails? → Fail (need ≥99%).
• Edition in force unknown? → treat affected citation as [Verify], confirm with FM, don't pass on assumption.
• Existing building found deficient on a periodic test? → §510.2 path → plan review.
• ERCES fault doesn't annunciate at FACP? → Fail the interface (510.4.2.5; see ../10-code/fire-alarm-and-erces.md).
• Standby runs short of the required hours? → Fail; confirm FMO hours (12 vs 24 [Verify]).
• Equipment not UL 2524 listed? → Fail (§18.12).
• Annual: >~3 dB drop vs baseline [Verify]? → investigate / possible re-commission.

First Weeks

Days 1–3 — pin the foundations (clears P0 in OPEN-ITEMS)

• Confirm editions enforced: IFC, NFPA 1225 (2022 vs 2025), NFPA 72 — ask the FM.
• Confirm ERCES standby hours (12 vs 24) and the signal level (−95 dBm or FMO-set).
• Get FMO submittal forms, the Letter of Certification/Authorization process, fees, timelines.
• Get the radio-shop / SEGARRN POC and who signs FCC licensee consent.
• Read ../OPEN-ITEMS.md top to bottom; fold answers into the files + log in ../CHANGELOG.md.

Week 1 — get current

• Shadow a plan review and an acceptance/annual test with the FM.
• Learn the grid test hands-on (../40-field-test/grid-method.md); verify your instrument's cal (NIST ≤12 mo).
• Walk a building's BDA/DAS + FACP interface end to end.

Weeks 2–4 — run it

• Lead a plan review using ../templates/plan-review-checklist.md.
• Run an acceptance test with ../templates/field-test-datasheet.md + ../templates/master-inspection-checklist.md; upload a completed checklist for analysis.
• Each FM ruling → update the relevant file and ../CHANGELOG.md (date + who).

SEGARRN & Local Jurisdiction

Radio system

• [Fact] SEGARRN — Southeast Georgia Regional Radio Network: a P25 trunked public-safety system, 700/800 MHz, serving Savannah/Chatham. The ERCES must rebroadcast its assigned channels.
• [Verify] Channels/talkgroups/control channels/donor site — operational data from the system manager / city radio shop (not public). Get the FCC licensee consent signer here. → ../00-quickref/frequencies.md.

Georgia adoption

• [Fact] 2024 IFC is the Georgia statewide edition, effective 2026-01-01; the GA Safety Fire Commissioner (OCI) adopts/amends the IFC for fire enforcement (binds you), separate from DCA's base I-Codes.
• [Verify] Which NFPA 1225 (2022/2025) and NFPA 72 editions Georgia references.

Savannah/Chatham quirks

• [Fact] The City's published BDA/ERRCS guide is 2018-IFC-based — map its citations to the in-force edition (../10-code/edition-deltas.md).
• [Verify] Savannah local amendments to §510 (signal level, standby hours, grid/failed-grid rule, donor-antenna gain cap, Class A requirement).
• [Verify] Chatham County (unincorporated) ERCES process — see ../00-quickref/contacts.md.

Sources: ICC – Georgia · GA OCI

Glossary

• ERCES — Emergency Responder Communication Enhancement System (2024 IFC term). The in-building system that makes responder radios work inside a building.
• ERRC — older term (2018 IFC), "Emergency Responder Radio Coverage." Same idea, renamed to ERCES.
• BDA — Bi-Directional Amplifier. Boosts the signal both ways (in and out).
• DAS — Distributed Antenna System. The network of indoor antennas the BDA feeds.
• Donor antenna — the (usually directional) outdoor antenna aimed at the public-safety tower; the BDA's link to the outside.
• Indoor / server antenna — the antennas inside the building that re-radiate the signal.
• DAQ — Delivered Audio Quality, 1–5 scale of voice intelligibility. 3.0 is the ERCES minimum.
• RSSI — Received Signal Strength Indicator (raw power, dBm). Coverage uses a level like −95 dBm.
• SINR / BER — Signal-to-Interference-plus-Noise Ratio / Bit Error Rate; P25 equivalents to DAQ 3.0 (~SINR ≥18 dB, BER ≤2.5%).
• P25 — Project 25, the digital public-safety radio standard SEGARRN uses.
• Trunking — many users sharing channels dynamically (vs fixed channels).
• Simulcast — multiple sites transmitting the same signal on the same frequency in sync.
• Isolation — RF separation between donor and indoor antennas; must be ≥ system gain + 20 dB.
• Oscillation — feedback when isolation is too low; the BDA amplifies its own signal.
• Desensitization (desense) — booster noise raising a receiver's noise floor, shrinking coverage.
• Near-far — strong nearby signal overwhelming a weak far one at an antenna.
• Link budget — the gain/loss accounting that predicts in-building signal.
• Class A / Class B — channelized (narrow) vs broadband BDA (FCC §90.219).
• UL 2524 — the listing standard for in-building 2-way ERCES equipment.
• UL 2196 / CI cable — 2-hour fire-rated circuit-integrity cable for survivable pathways.
• FACP — Fire Alarm Control Panel; where ERCES faults annunciate.
• AHJ — Authority Having Jurisdiction (here, the Savannah Fire Marshal).
• GROL — FCC General Radiotelephone Operator License (designer/installer qual).
• NEMA 4 / 4X — enclosure ratings (4X = corrosion-resistant).
• SEGARRN — Southeast Georgia Regional Radio Network (the local P25 system).

Open Items — Verify with the Fire Marshal

Rule: never present any of these as settled. When the FM rules, edit the affected file AND log it in CHANGELOG.md (date + who said it), then check the box here. Ask: = who to confirm with.

P0 — foundational (everything keys off these)

• [ ] Adopted IFC edition in force, with local amendments. The City's published BDA/ERRCS guidance is 2018-based; GA's 2024 IFC is statewide effective 2026-01-01. Which governs a permit today, and what does Savannah amend in §510? — Ask: FMO. Blocks all citations.
• [ ] NFPA 1225 edition referenced (2022 vs 2025). 2025 adds explicit fire-alarm supervision interface. — Ask: FMO / GA OCI.
• [ ] Standby power: 12 hr vs 24 hr. IFC/NFPA baseline is commonly 12 hr; many AHJs require 24 hr by amendment. — Ask: FMO. Affects every battery calc.
• [ ] NFPA 72 edition adopted. Drives the monitoring/supervision + pathway requirements. — Ask: FMO.

P1 — thresholds & test method

• [ ] Exact signal threshold — is it −95 dBm, or an FMO-set level? And is DAQ 3.0 the adopted acceptance criterion or dBm-only? — Ask: FMO.
• [ ] Savannah grid method — confirm against the current City BDA doc: ≥20 grids/floor (20×20 ft; 40×40 if floor >32,000 sf) and the max # of failed common-area grids allowed. — Ask: FMO / savannahga.gov BDA doc.
• [ ] Baseline deviation that forces re-commissioning on annual test (e.g., >3 dB drop)? — Ask: FMO.

P2 — equipment & authorization

• [ ] Class A (channelized) required? Any donor-antenna gain cap (e.g., ≤10 dBi)? — Ask: FMO.
• [ ] Designer/lead-tech qualifications enforced (FCC GROL + approved training or mfr cert)? — Ask: FMO.
• [ ] Pathway survivability level required (2-hr CI cable everywhere vs conditioned)? Knox/access switch + signage specifics? — Ask: FMO.

P3 — SEGARRN / spectrum (radio shop)

• [ ] Licensee + who signs FCC §90.219 retransmit consent for SEGARRN. — Ask: Radio shop / SEGARRN manager.
• [ ] Channels / talkgroups / donor site / aiming for each building. — Ask: Radio shop.
• [ ] Acceptance-test radio (exact portable model/freqs) + whether the radio shop witnesses. — Ask: Radio shop / FMO.

P4 — process & contacts

• [ ] FMO direct line/email + ERCES submittal checklist/forms. — Ask: FMO.
• [ ] Letter of Certification (acceptance) and annual Letter of Authorization process, timeline, fees. — Ask: FMO.
• [ ] Retrofit / existing-building applicability + any phase-in. — Ask: FMO.

Resolved (move here with date + CHANGELOG entry)

(none yet)

Changelog

Append-only. Each entry: date — who said it — what changed (and which file). Move resolved OPEN-ITEMS here.

2026-06-06 — initial build (Claude, from research; no seed handbook provided)

• Built Phases 0–5: scaffold, field cards, code core, operational sections, templates, decision trees, onboarding, jurisdiction, glossary.
• All claims researched + cited + certainty-labeled; no verbatim code text.
• No Fire Marshal rulings yet — every [Verify] in OPEN-ITEMS.md is still open. As the FM rules, log it here.