UndertowIQ

Signal identity beneath the surface.

RadioDNS Registry · Bearer Validation · Station Identity

← scanner · ↗ identity registry · /rdns/info · /rdns/stations

◤ REGISTER STATION

◢ LOOKUP // callsign or bearer FQDN · pulls from ZTR pipeline DB + Radio Browser

◢ CALLSIGN // e.g. WXYZ, NTS1 ◢ BAND

◢ FREQUENCY // MHz e.g. 106.5 ◢ PI CODE // 4 hex chars (RDS) ◢ ECC // 2 hex chars (RDS) — or leave blank and set country below ◢ COUNTRY CODE // ISO 2-letter fallback if ECC unknown (e.g. US, GB) ◢ STATE // 2-letter US state for canonical FQDN (e.g. AZ) ◢ RadioEPG HOST ◢ RadioSPI HOST ◢ PROVIDER NAME ◢ WEBSITE ◢ CONTACT EMAIL ◢ ADMIN KEY // if required

◈ DRM/AMSS — Digital Radio Mondiale / AM Signalling System (RDNS01 §5.1.3).
DRM: if you have a 6-hex DRM Service ID, enter it above to generate the bearer CNAME <sid>.drm.radiodns.org.
Traditional AM (530–1710 kHz MW/SW): leave DRM Service ID blank — SRV records only, no bearer CNAME per spec.
ZTR AM Extension: see the AM EXTENSION tab for analog AM bearer using Facility ID + frequency + GCC.

◈ DAB/DAB+ bearer — FQDN format: {scids}.{sid}.{eid}.{gcc}.dab.radiodns.org
Enter the ensemble ID (EId), service ID (SId), component ID (SCIdS, usually 0), and GCC (country nibble + ECC).

◤ Bearer Identity Preview

fill in fields above…

◤ STATION LOOKUP

Search by callsign or bearer FQDN. Queries ZTR registry, FCC database, and Radio Browser.

◤ RADIODNS VALIDATION ENGINE

Verify bearer DNS, SRV, SI.xml, TLS, and consistency in one shot.

◤ RECORD PREVIEW

Enter station details in the REGISTER tab, then click PREVIEW RECORDS to see the full DNS record set here.

◈ Use the REGISTER tab to generate a preview.

◤ AM EXTENSION — ZTR ANALOG AM BEARER

About the ZTR AM Extension

Analog AM lacks a universal RDS PI-equivalent. Public RadioDNS only defines bearers for FM (via RDS PI+ECC), DAB, and DRM digital AM. Traditional analog AM (MW 530–1710 kHz) has no standardised bearer identity.

UndertowIQ defines a deterministic AM bearer using frequency + FCC Facility ID + GCC. This is a ZTR-private extension, not an official RadioDNS standard.

Bearer format: {freq_khz_4digit}.{facility_id}.{gcc}.am.zerotrustradio.org

e.g. KAZM 780 AM → 0780.64494.da0.am.zerotrustradio.org

A facility alias is also created: facility-{facility_id}.am.zerotrustradio.org

GCC for US AM defaults to da0 (country code D = North America, ECC = a0 = US). This is a ZTR convention — adjust for other countries.

◢ CALLSIGN ◢ FREQUENCY (kHz) ◢ FCC FACILITY ID ◢ STATE // 2-letter US state ◢ GCC // 3 hex chars, US default: da0

◤ REGISTERED STATIONS

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◤ REGISTER STATION

◤ GENERATED RADIODNS RECORDS

◤ STATION LOOKUP

◤ RADIODNS VALIDATION ENGINE

◤ RECORD PREVIEW

◤ AM EXTENSION — ZTR ANALOG AM BEARER

About the ZTR AM Extension

◤ REGISTERED STATIONS