diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9944f0257..a23fa88da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+- Expose portable radio, camera-type and regional source helpers; keep HTTP transport separate from record normalization.
+
 - Separate vessel records and feed acquisition from rendering while preserving selection, partial-feed retention, sea-surface placement and request cancellation.
 
 - Separate military-flight records and acquisition from rendering while preserving ground-model ownership, source units and follow behavior.
diff --git a/docs/CURRENT-STATE.md b/docs/CURRENT-STATE.md
index fbb8e7a31..3e43c1c70 100644
--- a/docs/CURRENT-STATE.md
+++ b/docs/CURRENT-STATE.md
@@ -1,5 +1,7 @@
 # God's Eye View Current State
 
+Portable source exports provide Radio Browser station normalization, CCTV feed types and regional records independently of HTTP middleware. Radio normalization accepts an explicit URL policy; the standalone directory retains its existing HTTPS rules. Tile coordinate validation accepts explicit zoom bounds with unchanged traffic defaults. Cache, request and rendering owners remain unchanged.
+
 Vessels separate plain, stable MMSI records and source acquisition from scene
 resources. The renderer owns geometry and billboards; cards, picking and trails
 resolve those resources through it. Partial-feed retention, selected-vessel
diff --git a/package.json b/package.json
index 77e4b33eb..2c67a5ddb 100644
--- a/package.json
+++ b/package.json
@@ -207,6 +207,9 @@
     "./layers/military/records": "./src/layers/military/records.js",
     "./layers/military/ingestion": "./src/layers/military/ingestion.js",
     "./layers/vessels/records": "./src/layers/vessels/records.js",
-    "./layers/vessels/ingestion": "./src/layers/vessels/ingestion.js"
+    "./layers/vessels/ingestion": "./src/layers/vessels/ingestion.js",
+    "./sources/radio-browser": "./src/sources/radioBrowser.js",
+    "./sources/cctv-types": "./src/sources/cctvTypes.js",
+    "./sources/regional": "./src/data/regionalModel.js"
   }
 }
diff --git a/scripts/format-scope.json b/scripts/format-scope.json
index 9341046c1..5ac2713fd 100644
--- a/scripts/format-scope.json
+++ b/scripts/format-scope.json
@@ -648,5 +648,8 @@
   "src/data/directions.js",
   "src/data/directions.test.mjs",
   "src/app/layers/directions.js",
-  "src/layers/directions/index.js"
+  "src/layers/directions/index.js",
+  "src/sources/radioBrowser.js",
+  "src/sources/cctvTypes.js",
+  "src/sources/protocols.test.mjs"
 ]
diff --git a/scripts/package-boundaries.json b/scripts/package-boundaries.json
index ae84f6c61..7858c9bb4 100644
--- a/scripts/package-boundaries.json
+++ b/scripts/package-boundaries.json
@@ -161,7 +161,8 @@
       "server/providers/common/geo.js",
       "server/providers/places/google-key.js",
       "scripts/google-server-key.mjs",
-      "src/data/cctvFootprint.js"
+      "src/data/cctvFootprint.js",
+      "src/sources/cctvTypes.js"
     ],
     "external": []
   },
@@ -175,7 +176,8 @@
       "server/providers/radio/stations.js",
       "server/providers/radio/transport.js",
       "src/data/radioCountry.js",
-      "server/providers/common/http.js"
+      "server/providers/common/http.js",
+      "src/sources/radioBrowser.js"
     ],
     "external": []
   },
@@ -2119,5 +2121,20 @@
     "exports": ["./layers/directions"],
     "modules": ["src/layers/directions/index.js", "src/data/routeSteps.js"],
     "external": ["cesium"]
+  },
+  "radio-browser-source": {
+    "exports": ["./sources/radio-browser"],
+    "modules": ["src/sources/radioBrowser.js", "src/data/radioCountry.js"],
+    "external": []
+  },
+  "cctv-types-source": {
+    "exports": ["./sources/cctv-types"],
+    "modules": ["src/sources/cctvTypes.js"],
+    "external": []
+  },
+  "regional-source": {
+    "exports": ["./sources/regional"],
+    "modules": ["src/data/regionalModel.js"],
+    "external": []
   }
 }
diff --git a/server/providers/cctv/normalize.js b/server/providers/cctv/normalize.js
index ffe025b30..b564ef440 100644
--- a/server/providers/cctv/normalize.js
+++ b/server/providers/cctv/normalize.js
@@ -1,3 +1,8 @@
+import {
+  normalizeFeedType,
+  isVideoFeedType,
+} from '../../../src/sources/cctvTypes.js';
+export { normalizeFeedType, isVideoFeedType };
 import { directionToHeading } from '../../../src/data/directionText.js';
 import { haversineKm } from '../common/geo.js';
 /**
@@ -31,35 +36,6 @@ export function escapeXml(text) {
     .replace(/'/g, ''');
 }
 
-/**
- * Canonicalize a CCTV feed type string to one of:
- * 'image', 'mjpeg', 'mp4', 'webm', 'hls', or pass-through.
- *
- * @param {string} value - Raw feed type (e.g. 'jpeg', 'mjpg', 'video', 'stream').
- * @returns {string} Normalized feed type.
- */
-export function normalizeFeedType(value) {
-  const raw = String(value || '')
-    .trim()
-    .toLowerCase();
-  if (!raw) return 'image';
-  if (raw === 'jpeg' || raw === 'jpg' || raw === 'png') return 'image';
-  if (raw === 'mjpg') return 'mjpeg';
-  if (raw === 'video') return 'mp4';
-  if (raw === 'stream') return 'hls';
-  return raw;
-}
-
-/**
- * Check whether a normalized feed type represents streaming video.
- *
- * @param {string} feedType
- * @returns {boolean}
- */
-export function isVideoFeedType(feedType) {
-  return feedType === 'mp4' || feedType === 'webm' || feedType === 'hls';
-}
-
 /**
  * Coerce a value to a finite number, returning fallback if NaN/Infinity.
  *
diff --git a/server/providers/radio/constants.js b/server/providers/radio/constants.js
index 996e2af06..0fee93ac6 100644
--- a/server/providers/radio/constants.js
+++ b/server/providers/radio/constants.js
@@ -10,8 +10,7 @@ export const RADIO_CATALOG_HEALTHY_MIN_STATIONS = Math.ceil(
 );
 export const RADIO_USER_AGENT =
   'GodsEyeView/1.0 (Radio Browser directory client)';
-export const RADIO_UUID_RE =
-  /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+export { RADIO_UUID_RE } from '../../../src/sources/radioBrowser.js';
 export const RADIO_FALLBACK_MIRRORS = Object.freeze([
   'https://de1.api.radio-browser.info',
   'https://de2.api.radio-browser.info',
diff --git a/server/providers/radio/stations.js b/server/providers/radio/stations.js
index 4d9bcf35c..b97b2d3c6 100644
--- a/server/providers/radio/stations.js
+++ b/server/providers/radio/stations.js
@@ -1,155 +1,7 @@
-import { RADIO_UUID_RE } from './constants.js';
-import { normalizeRadioCountryInput } from '../../../src/data/radioCountry.js';
-export function cleanRadioText(value, maxLength) {
-  return String(value ?? '')
-    .replace(/[\u0000-\u001f\u007f]/g, ' ')
-    .replace(/\s+/g, ' ')
-    .trim()
-    .slice(0, maxLength)
-    .trim();
-}
-
-export function isNonGlobalIpv4(hostname) {
-  const pieces = hostname.split('.');
-  if (pieces.length !== 4 || pieces.some((piece) => !/^\d{1,3}$/.test(piece)))
-    return false;
-  const values = pieces.map(Number);
-  if (values.some((value) => value > 255)) return true;
-  const [a, b, c] = values;
-  return (
-    a === 0 ||
-    a === 10 ||
-    a === 127 ||
-    a >= 224 ||
-    (a === 100 && b >= 64 && b <= 127) ||
-    (a === 169 && b === 254) ||
-    (a === 172 && b >= 16 && b <= 31) ||
-    (a === 192 && b === 0) ||
-    (a === 192 && b === 88 && c === 99) ||
-    (a === 192 && b === 168) ||
-    (a === 198 && (b === 18 || b === 19)) ||
-    (a === 198 && b === 51 && c === 100) ||
-    (a === 203 && b === 0 && c === 113)
-  );
-}
-
-/** Return a normalized public HTTPS URL, or null for local/private targets. */
-export function publicRadioHttpsUrl(value) {
-  try {
-    const url = new URL(String(value ?? ''));
-    const hostname = url.hostname
-      .toLowerCase()
-      .replace(/^\[|\]$/g, '')
-      .replace(/\.$/, '');
-    if (url.protocol !== 'https:' || url.username || url.password || !hostname)
-      return null;
-    if (
-      hostname === 'localhost' ||
-      hostname.endsWith('.localhost') ||
-      hostname.endsWith('.local') ||
-      isNonGlobalIpv4(hostname) ||
-      hostname.includes(':')
-    )
-      return null;
-    url.hash = '';
-    return url.href;
-  } catch {
-    return null;
-  }
-}
-
-/** Normalize one Radio Browser station and omit favicons and unsafe streams. */
-export function normalizeRadioBrowserStation(raw) {
-  const id = cleanRadioText(raw?.stationuuid, 40).toLowerCase();
-  const lat =
-    raw?.geo_lat === null || raw?.geo_lat === '' ? null : Number(raw?.geo_lat);
-  const lon =
-    raw?.geo_long === null || raw?.geo_long === ''
-      ? null
-      : Number(raw?.geo_long);
-  const codec = cleanRadioText(raw?.codec, 16).toUpperCase();
-  const streamUrl = publicRadioHttpsUrl(raw?.url_resolved || raw?.url);
-  if (
-    !RADIO_UUID_RE.test(id) ||
-    Number(raw?.lastcheckok) !== 1 ||
-    Number(raw?.hls) === 1 ||
-    !Number.isFinite(lat) ||
-    lat < -90 ||
-    lat > 90 ||
-    !Number.isFinite(lon) ||
-    lon < -180 ||
-    lon > 180 ||
-    !/^(?:MP3|AAC(?:\+|-LC|-HE)?|HE-AAC)$/i.test(codec) ||
-    !streamUrl
-  )
-    return null;
-
-  const name = cleanRadioText(raw?.name, 140);
-  if (!name) return null;
-  const tags = String(raw?.tags ?? '')
-    .split(',')
-    .map((tag) =>
-      cleanRadioText(tag, 80)
-        .toLocaleLowerCase()
-        .replace(/[_-]+/g, ' ')
-        .replace(/\s+/g, ' ')
-        .trim(),
-    )
-    .filter(Boolean)
-    .filter((tag, index, all) => all.indexOf(tag) === index)
-    .slice(0, 24);
-  const languages = String(raw?.language ?? '')
-    .split(',')
-    .map((language) => cleanRadioText(language, 40))
-    .filter(Boolean)
-    .slice(0, 8);
-  const rawCountryCode = cleanRadioText(raw?.countrycode, 2).toUpperCase();
-  const normalizedCode = normalizeRadioCountryInput(rawCountryCode);
-  const normalizedCountry =
-    normalizedCode.valid && !normalizedCode.empty
-      ? normalizedCode
-      : normalizeRadioCountryInput(cleanRadioText(raw?.country, 80));
-  const bitrate = Number(raw?.bitrate);
-  return {
-    id,
-    name,
-    lat,
-    lon,
-    streamUrl,
-    homepage: publicRadioHttpsUrl(raw?.homepage),
-    tags,
-    languages,
-    state: cleanRadioText(raw?.state, 80),
-    country:
-      normalizedCountry.valid && !normalizedCountry.empty
-        ? normalizedCountry.name
-        : cleanRadioText(raw?.country, 80),
-    countryCode: normalizedCountry.valid ? normalizedCountry.code : '',
-    metadataTrust: 'untrusted-community',
-    codec,
-    bitrate:
-      Number.isInteger(bitrate) && bitrate >= 8 && bitrate <= 1024
-        ? bitrate
-        : null,
-    clickCount: Math.max(0, Math.min(10_000_000, Number(raw?.clickcount) || 0)),
-  };
-}
-
-export function publicRadioStation(station) {
-  return {
-    id: station.id,
-    name: station.name,
-    lat: station.lat,
-    lon: station.lon,
-    streamUrl: station.streamUrl,
-    homepage: station.homepage,
-    tags: station.tags,
-    languages: station.languages,
-    state: station.state,
-    country: station.country,
-    countryCode: station.countryCode,
-    metadataTrust: station.metadataTrust,
-    codec: station.codec,
-    bitrate: station.bitrate,
-  };
-}
+export {
+  cleanRadioText,
+  isNonGlobalIpv4,
+  publicRadioHttpsUrl,
+  normalizeRadioBrowserStation,
+  publicRadioStation,
+} from '../../../src/sources/radioBrowser.js';
diff --git a/src/data/tomtomTiles.js b/src/data/tomtomTiles.js
index f0da57e46..af4fc95b3 100644
--- a/src/data/tomtomTiles.js
+++ b/src/data/tomtomTiles.js
@@ -26,12 +26,26 @@ const MERCATOR_LAT_LIMIT = 85.05112878;
  * @param {number} z - Zoom level; integer within [MIN_TILE_ZOOM, MAX_TILE_ZOOM].
  * @param {number} x - Tile column; integer within [0, 2^z - 1].
  * @param {number} y - Tile row; integer within [0, 2^z - 1].
+ * @param {{minZoom?: number, maxZoom?: number}} [bounds] Supported source zooms.
  * @returns {boolean} True when the coordinate is a fetchable tile.
  */
-export function isValidTileCoord(z, x, y) {
+export function isValidTileCoord(
+  z,
+  x,
+  y,
+  { minZoom = MIN_TILE_ZOOM, maxZoom = MAX_TILE_ZOOM } = {},
+) {
   if (!Number.isInteger(z) || !Number.isInteger(x) || !Number.isInteger(y))
     return false;
-  if (z < MIN_TILE_ZOOM || z > MAX_TILE_ZOOM) return false;
+  if (
+    !Number.isInteger(minZoom) ||
+    !Number.isInteger(maxZoom) ||
+    minZoom < 0 ||
+    maxZoom > 30 ||
+    minZoom > maxZoom
+  )
+    return false;
+  if (z < minZoom || z > maxZoom) return false;
   const n = 2 ** z;
   return x >= 0 && x < n && y >= 0 && y < n;
 }
diff --git a/src/sources/cctvTypes.js b/src/sources/cctvTypes.js
new file mode 100644
index 000000000..2a3f6a6a3
--- /dev/null
+++ b/src/sources/cctvTypes.js
@@ -0,0 +1,28 @@
+/**
+ * Canonicalize a CCTV feed type string to one of:
+ * 'image', 'mjpeg', 'mp4', 'webm', 'hls', or pass-through.
+ *
+ * @param {string} value - Raw feed type (e.g. 'jpeg', 'mjpg', 'video', 'stream').
+ * @returns {string} Normalized feed type.
+ */
+export function normalizeFeedType(value) {
+  const raw = String(value || '')
+    .trim()
+    .toLowerCase();
+  if (!raw) return 'image';
+  if (raw === 'jpeg' || raw === 'jpg' || raw === 'png') return 'image';
+  if (raw === 'mjpg') return 'mjpeg';
+  if (raw === 'video') return 'mp4';
+  if (raw === 'stream') return 'hls';
+  return raw;
+}
+
+/**
+ * Check whether a normalized feed type represents streaming video.
+ *
+ * @param {string} feedType
+ * @returns {boolean}
+ */
+export function isVideoFeedType(feedType) {
+  return feedType === 'mp4' || feedType === 'webm' || feedType === 'hls';
+}
diff --git a/src/sources/protocols.test.mjs b/src/sources/protocols.test.mjs
new file mode 100644
index 000000000..c4d90e6b0
--- /dev/null
+++ b/src/sources/protocols.test.mjs
@@ -0,0 +1,116 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import {
+  normalizeRadioBrowserStation,
+  publicRadioStation,
+  publicRadioHttpsUrl,
+} from './radioBrowser.js';
+import { normalizeFeedType, isVideoFeedType } from './cctvTypes.js';
+import { isValidTileCoord } from '../data/tomtomTiles.js';
+
+const station = {
+  stationuuid: 'abcdefff-1234-5678-abcd-123456789abc',
+  name: '  Test\n Radio ',
+  geo_lat: '30.2',
+  geo_long: '-97.7',
+  url_resolved: 'https://radio.example/stream',
+  homepage: 'https://radio.example/',
+  codec: 'mp3',
+  lastcheckok: 1,
+  hls: 0,
+  countrycode: 'US',
+  country: 'US',
+  tags: 'News,news,air_traffic',
+  bitrate: 128,
+  clickcount: 10,
+};
+
+test('radio records normalize identity, country and tags and project only public fields', () => {
+  const result = normalizeRadioBrowserStation(station);
+  assert.equal(result.name, 'Test Radio');
+  assert.equal(result.countryCode, 'US');
+  assert.equal(result.country, 'United States');
+  assert.deepEqual(result.tags, ['news', 'air traffic']);
+  assert.equal(result.lat, 30.2);
+  assert.equal(result.metadataTrust, 'untrusted-community');
+  assert.equal('clickCount' in publicRadioStation(result), false);
+  assert.equal(
+    'extra' in publicRadioStation({ ...result, extra: 'not a record field' }),
+    false,
+  );
+});
+
+test('radio rejects unusable metadata and unsafe default stream destinations', () => {
+  for (const patch of [
+    { geo_lat: null },
+    { geo_long: undefined },
+    { geo_lat: 91 },
+    { stationuuid: 'invalid' },
+    { name: '' },
+    { hls: 1 },
+    { lastcheckok: 0 },
+    { codec: 'unknown' },
+    ...[
+      'http://radio.example/',
+      'https://localhost/',
+      'https://127.0.0.1/',
+      'https://user:pass@radio.example/',
+      'https://[::1]/',
+    ].map((url_resolved) => ({ url_resolved })),
+  ])
+    assert.equal(normalizeRadioBrowserStation({ ...station, ...patch }), null);
+});
+
+test('a supplied URL policy applies independently to stream and homepage', () => {
+  const normalizeUrl = (value) => {
+    const safe = publicRadioHttpsUrl(value);
+    return safe && !new URL(safe).port ? safe : null;
+  };
+  assert.equal(
+    normalizeRadioBrowserStation(
+      { ...station, url_resolved: 'https://radio.example:8443/' },
+      { normalizeUrl },
+    ),
+    null,
+  );
+  const record = normalizeRadioBrowserStation(
+    { ...station, homepage: 'https://radio.example:8443/' },
+    { normalizeUrl },
+  );
+  assert.equal(record.streamUrl, station.url_resolved);
+  assert.equal(record.homepage, null);
+  assert.ok(
+    normalizeRadioBrowserStation({
+      ...station,
+      url_resolved: 'https://radio.example:8443/',
+    }),
+  );
+});
+
+test('camera aliases remain separate from player support decisions', () => {
+  for (const [input, expected] of [
+    ['JPEG', 'image'],
+    ['mjpg', 'mjpeg'],
+    ['video', 'mp4'],
+    ['stream', 'hls'],
+    ['', 'image'],
+    ['other', 'other'],
+  ]) {
+    assert.equal(normalizeFeedType(input), expected);
+  }
+  assert.equal(isVideoFeedType('mjpeg'), false);
+  assert.equal(isVideoFeedType('hls'), true);
+});
+
+test('XYZ math preserves traffic bounds while allowing explicit source bounds', () => {
+  assert.equal(isValidTileCoord(7, 0, 0), false);
+  assert.equal(isValidTileCoord(17, 0, 0), false);
+  assert.equal(isValidTileCoord(8, 255, 255), true);
+  assert.equal(isValidTileCoord(8, 256, 0), false);
+  const bounds = { minZoom: 0, maxZoom: 22 };
+  assert.equal(isValidTileCoord(0, 0, 0, bounds), true);
+  assert.equal(isValidTileCoord(22, 2 ** 22 - 1, 0, bounds), true);
+  assert.equal(isValidTileCoord(23, 0, 0, bounds), false);
+  assert.equal(isValidTileCoord(4, 1.5, 0, bounds), false);
+  assert.equal(isValidTileCoord(4, 0, 0, { minZoom: 5, maxZoom: 2 }), false);
+});
diff --git a/src/sources/radioBrowser.js b/src/sources/radioBrowser.js
new file mode 100644
index 000000000..8511b6beb
--- /dev/null
+++ b/src/sources/radioBrowser.js
@@ -0,0 +1,166 @@
+import { normalizeRadioCountryInput } from '../data/radioCountry.js';
+
+export const RADIO_UUID_RE =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+export function cleanRadioText(value, maxLength) {
+  return String(value ?? '')
+    .replace(/[\u0000-\u001f\u007f]/g, ' ')
+    .replace(/\s+/g, ' ')
+    .trim()
+    .slice(0, maxLength)
+    .trim();
+}
+
+export function isNonGlobalIpv4(hostname) {
+  const pieces = hostname.split('.');
+  if (pieces.length !== 4 || pieces.some((piece) => !/^\d{1,3}$/.test(piece)))
+    return false;
+  const values = pieces.map(Number);
+  if (values.some((value) => value > 255)) return true;
+  const [a, b, c] = values;
+  return (
+    a === 0 ||
+    a === 10 ||
+    a === 127 ||
+    a >= 224 ||
+    (a === 100 && b >= 64 && b <= 127) ||
+    (a === 169 && b === 254) ||
+    (a === 172 && b >= 16 && b <= 31) ||
+    (a === 192 && b === 0) ||
+    (a === 192 && b === 88 && c === 99) ||
+    (a === 192 && b === 168) ||
+    (a === 198 && (b === 18 || b === 19)) ||
+    (a === 198 && b === 51 && c === 100) ||
+    (a === 203 && b === 0 && c === 113)
+  );
+}
+
+/** Return a normalized public HTTPS URL, or null for local/private targets. */
+export function publicRadioHttpsUrl(value) {
+  try {
+    const url = new URL(String(value ?? ''));
+    const hostname = url.hostname
+      .toLowerCase()
+      .replace(/^\[|\]$/g, '')
+      .replace(/\.$/, '');
+    if (url.protocol !== 'https:' || url.username || url.password || !hostname)
+      return null;
+    if (
+      hostname === 'localhost' ||
+      hostname.endsWith('.localhost') ||
+      hostname.endsWith('.local') ||
+      isNonGlobalIpv4(hostname) ||
+      hostname.includes(':')
+    )
+      return null;
+    url.hash = '';
+    return url.href;
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Normalize one Radio Browser station and omit favicons and unsafe streams.
+ * @param {object} raw Directory record.
+ * @param {object} [options]
+ * @param {(value: unknown) => string|null} [options.normalizeUrl] URL admission
+ *   policy, applied to both stream and homepage; returns a safe URL or null.
+ */
+export function normalizeRadioBrowserStation(
+  raw,
+  { normalizeUrl = publicRadioHttpsUrl } = {},
+) {
+  const id = cleanRadioText(raw?.stationuuid, 40).toLowerCase();
+  const lat =
+    raw?.geo_lat === null || raw?.geo_lat === '' ? null : Number(raw?.geo_lat);
+  const lon =
+    raw?.geo_long === null || raw?.geo_long === ''
+      ? null
+      : Number(raw?.geo_long);
+  const codec = cleanRadioText(raw?.codec, 16).toUpperCase();
+  const streamUrl = normalizeUrl(raw?.url_resolved || raw?.url);
+  if (
+    !RADIO_UUID_RE.test(id) ||
+    Number(raw?.lastcheckok) !== 1 ||
+    Number(raw?.hls) === 1 ||
+    !Number.isFinite(lat) ||
+    lat < -90 ||
+    lat > 90 ||
+    !Number.isFinite(lon) ||
+    lon < -180 ||
+    lon > 180 ||
+    !/^(?:MP3|AAC(?:\+|-LC|-HE)?|HE-AAC)$/i.test(codec) ||
+    !streamUrl
+  )
+    return null;
+
+  const name = cleanRadioText(raw?.name, 140);
+  if (!name) return null;
+  const tags = String(raw?.tags ?? '')
+    .split(',')
+    .map((tag) =>
+      cleanRadioText(tag, 80)
+        .toLocaleLowerCase()
+        .replace(/[_-]+/g, ' ')
+        .replace(/\s+/g, ' ')
+        .trim(),
+    )
+    .filter(Boolean)
+    .filter((tag, index, all) => all.indexOf(tag) === index)
+    .slice(0, 24);
+  const languages = String(raw?.language ?? '')
+    .split(',')
+    .map((language) => cleanRadioText(language, 40))
+    .filter(Boolean)
+    .slice(0, 8);
+  const rawCountryCode = cleanRadioText(raw?.countrycode, 2).toUpperCase();
+  const normalizedCode = normalizeRadioCountryInput(rawCountryCode);
+  const normalizedCountry =
+    normalizedCode.valid && !normalizedCode.empty
+      ? normalizedCode
+      : normalizeRadioCountryInput(cleanRadioText(raw?.country, 80));
+  const bitrate = Number(raw?.bitrate);
+  return {
+    id,
+    name,
+    lat,
+    lon,
+    streamUrl,
+    homepage: normalizeUrl(raw?.homepage),
+    tags,
+    languages,
+    state: cleanRadioText(raw?.state, 80),
+    country:
+      normalizedCountry.valid && !normalizedCountry.empty
+        ? normalizedCountry.name
+        : cleanRadioText(raw?.country, 80),
+    countryCode: normalizedCountry.valid ? normalizedCountry.code : '',
+    metadataTrust: 'untrusted-community',
+    codec,
+    bitrate:
+      Number.isInteger(bitrate) && bitrate >= 8 && bitrate <= 1024
+        ? bitrate
+        : null,
+    clickCount: Math.max(0, Math.min(10_000_000, Number(raw?.clickcount) || 0)),
+  };
+}
+
+export function publicRadioStation(station) {
+  return {
+    id: station.id,
+    name: station.name,
+    lat: station.lat,
+    lon: station.lon,
+    streamUrl: station.streamUrl,
+    homepage: station.homepage,
+    tags: station.tags,
+    languages: station.languages,
+    state: station.state,
+    country: station.country,
+    countryCode: station.countryCode,
+    metadataTrust: station.metadataTrust,
+    codec: station.codec,
+    bitrate: station.bitrate,
+  };
+}