diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js
index 7272b89f..1d22e6ca 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/generated/app.js
@@ -2825,7 +2825,7 @@ function updateRigSubtitle(activeRigId) {
   rigSubtitle.textContent = `Rig: ${name}`;
   updateDocumentTitle(activeChannelRds());
 }
-function applyRigList(activeRigId, rigIds, displayNames = {}) {
+function applyRigList(activeRigId, rigIds, displayNames) {
   if (!Array.isArray(rigIds)) return;
   const nextIds = rigIds.filter((id) => typeof id === "string" && id.length > 0);
   const prevKey = lastRigIds.join("\0") + "|" + (lastActiveRigId || "");
@@ -6433,6 +6433,7 @@ function positionSquelchLine() {
 }
 function submitSdrSquelch() {
   if (!sdrSquelchSupported) return;
+  sdrSquelchLocalAt = Date.now();
   saveSetting("sdrSquelchEnabled", sdrSquelchEnabled);
   saveSetting("sdrSquelchThresholdDb", sdrSquelchThresholdDb);
   postPath(
@@ -6446,6 +6447,8 @@ function setSdrSquelch(thresholdDb, enabled, options = {}) {
   renderSdrSquelch();
   if (options.submit !== false) submitSdrSquelch();
 }
+var SDR_SQUELCH_HOLD_MS = 2e3;
+var sdrSquelchLocalAt = 0;
 var SQUELCH_NOISE_WINDOW_MS = 1e4;
 var SQUELCH_NOISE_MARGIN_DB = 5;
 var SQUELCH_MEASURE_MS = 1500;
@@ -6478,6 +6481,7 @@ function updateSdrSquelchControlVisibility() {
 function syncSdrSquelchFromServer(enabled, thresholdDb) {
   if (squelchDragPointerId !== null) return;
   if (sdrSquelchDbEl && document.activeElement === sdrSquelchDbEl) return;
+  if (Date.now() - sdrSquelchLocalAt < SDR_SQUELCH_HOLD_MS) return;
   sdrSquelchEnabled = enabled;
   if (isFiniteNumber(thresholdDb)) sdrSquelchThresholdDb = clampSdrSquelchDb(thresholdDb);
   saveSetting("sdrSquelchEnabled", sdrSquelchEnabled);
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/app.ts b/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/app.ts
index 45843d2e..3ded13e7 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/app.ts
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/src/app.ts
@@ -1424,7 +1424,11 @@ function updateRigSubtitle(activeRigId: string | null) {
   updateDocumentTitle(activeChannelRds());
 }
 
-function applyRigList(activeRigId: string | null, rigIds: string[], displayNames: Record<string, string> = {}) {
+// `displayNames` omitted means "no news", not "no names". The state updates
+// carry only the rig ids — /rigs is what knows the names — and this defaulted
+// to an empty map, so the first state frame after load wiped the names and the
+// picker and header fell back to the lowercase ids for the rest of the session.
+function applyRigList(activeRigId: string | null, rigIds: string[], displayNames?: Record<string, string>) {
   if (!Array.isArray(rigIds)) return;
   const nextIds = rigIds.filter((id) => typeof id === "string" && id.length > 0);
   // Detect whether the rig list or active rig actually changed so we can
@@ -5404,6 +5408,7 @@ function positionSquelchLine() {
 
 function submitSdrSquelch() {
   if (!sdrSquelchSupported) return;
+  sdrSquelchLocalAt = Date.now();
   saveSetting("sdrSquelchEnabled", sdrSquelchEnabled);
   saveSetting("sdrSquelchThresholdDb", sdrSquelchThresholdDb);
   postPath(
@@ -5427,6 +5432,9 @@ function setSdrSquelch(thresholdDb: number, enabled: boolean, options: { submit?
 // the old "noise floor + 6 dB" left the gate 16-22 dB below the noise on a
 // narrow span and it simply never closed. Reading the same number the DSP
 // compares needs no conversion at all.
+// How long a local squelch change outranks the server's echo of the old one.
+const SDR_SQUELCH_HOLD_MS = 2_000;
+let sdrSquelchLocalAt = 0;
 const SQUELCH_NOISE_WINDOW_MS = 10_000;
 const SQUELCH_NOISE_MARGIN_DB = 5;
 const SQUELCH_MEASURE_MS = 1_500;
@@ -5472,6 +5480,10 @@ function syncSdrSquelchFromServer(enabled: boolean, thresholdDb: number | null)
   // level would fight the echo of the value the server last confirmed.
   if (squelchDragPointerId !== null) return;
   if (sdrSquelchDbEl && document.activeElement === sdrSquelchDbEl) return;
+  // Nor just after letting go: state frames are in flight continuously, and
+  // one sent before the new threshold was applied would snap the line back to
+  // where it was dragged from.
+  if (Date.now() - sdrSquelchLocalAt < SDR_SQUELCH_HOLD_MS) return;
   sdrSquelchEnabled = enabled;
   if (isFiniteNumber(thresholdDb)) sdrSquelchThresholdDb = clampSdrSquelchDb(thresholdDb);
   saveSetting("sdrSquelchEnabled", sdrSquelchEnabled);
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs
index 7f0e2d21..cabaa179 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/browser-smoke.mjs
@@ -147,6 +147,20 @@ try {
   assert.ok(["ok", "busy", "error"].includes(hint.state), `status pill state is ${hint.state}`);
   assert.equal(hint.state, "ok", `fixture reports "${hint.text}" but the pill is ${hint.state}`);
 
+  // Rig names, and they have to survive the state stream. The updates carry
+  // only rig ids — /rigs is what knows the names — and applying one used to
+  // clear the names, so the picker and the header fell back to the lowercase
+  // ids a second after load and stayed there.
+  await page.waitForTimeout(1500);
+  const rigLabels = await page.evaluate(() => ({
+    options: [...document.getElementById("header-rig-switch-select").options].map((o) => o.textContent),
+    subtitle: document.getElementById("rig-subtitle").textContent,
+  }));
+  assert.deepEqual(rigLabels.options, ["Primary fixture", "Secondary fixture"],
+    `the picker reads ${JSON.stringify(rigLabels.options)}`);
+  assert.equal(rigLabels.subtitle, "Rig: Primary fixture",
+    `the header reads "${rigLabels.subtitle}"`);
+
   const rigPicker = page.locator("#header-rig-switch-select");
   await rigPicker.locator("option").nth(1).waitFor({ state: "attached" });
   await rigPicker.selectOption("rig-b");
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/web-fixture.mjs b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/web-fixture.mjs
index 66d9f4cc..ee29f064 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/web-fixture.mjs
+++ b/src/trx-client/trx-frontend/trx-frontend-http/frontend/tests/web-fixture.mjs
@@ -237,6 +237,18 @@ export async function startWebFixture({
 
   const server = http.createServer(async (request, response) => {
     const url = new URL(request.url ?? "/", "http://127.0.0.1");
+    // Setting a control means the next status carries the new value, the way a
+    // real server echoes what it applied.
+    if (url.pathname === "/set_sdr_squelch") {
+      const enabled = url.searchParams.get("enabled") === "true";
+      const threshold = Number(url.searchParams.get("threshold_db"));
+      if (status.filter) {
+        status.filter.sdr_squelch_enabled = enabled;
+        if (Number.isFinite(threshold)) status.filter.sdr_squelch_threshold_db = threshold;
+      }
+      response.writeHead(200).end();
+      return;
+    }
     if (url.pathname === "/select_rig" && request.method === "POST") {
       const remote = url.searchParams.get("remote");
       if (remote) {
@@ -324,6 +336,28 @@ export async function startWebFixture({
       request.on("close", () => clearInterval(timer));
       return;
     }
+    // The real server pushes rig state here every second or so; serving an
+    // open-but-silent stream meant nothing in the client's state-update path
+    // was ever exercised.
+    if (url.pathname === "/events") {
+      response.writeHead(200, {
+        "cache-control": "no-cache",
+        connection: "keep-alive",
+        "content-type": "text/event-stream",
+      });
+      // Varying, as a real one is: the client skips a frame identical to the
+      // last, so a repeated payload exercises none of the state-update path.
+      const frame = () => JSON.stringify({
+        ...status,
+        status: { ...status.status, freq: { hz: 100_000_000 + (Date.now() % 1000) } },
+      });
+      response.write(`data: ${frame()}\n\n`);
+      const timer = setInterval(() => {
+        response.write(`data: ${frame()}\n\n`);
+      }, 700);
+      request.on("close", () => clearInterval(timer));
+      return;
+    }
     if (["/events", "/decode", "/spectrum", "/meter"].includes(url.pathname)) {
       response.writeHead(200, {
         "cache-control": "no-cache",