diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
index ed37108..5367965 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
@@ -29,6 +29,7 @@
         </div>
         <div class="tab-bar-nav">
           <button class="tab active" data-tab="main">Main</button>
+          <button class="tab" data-tab="bookmarks">Bookmarks</button>
           <button class="tab" data-tab="plugins">Plugins</button>
           <button class="tab" data-tab="map">Map</button>
           <button class="tab" data-tab="about">About</button>
@@ -176,10 +177,12 @@
                     </select>
                   </label>
                   <label class="wfm-control">
-                    <span class="wfm-control-label">Denoise</span>
+                    <span class="wfm-control-label">Denoise Level</span>
                     <select id="wfm-denoise" class="status-input">
-                      <option value="on">On</option>
-                      <option value="off">Off</option>
+                      <option value="auto">Auto</option>
+                      <option value="low">Low</option>
+                      <option value="medium">Medium</option>
+                      <option value="high">High</option>
                     </select>
                   </label>
                   <div class="wfm-gain-group" id="sdr-gain-controls">
@@ -258,6 +261,74 @@
     </div>
     </div>
     </div>
+    <div id="tab-bookmarks" class="tab-panel" style="display:none;">
+      <div class="bm-toolbar">
+        <select id="bm-category-filter" class="status-input" aria-label="Filter by category">
+          <option value="">All categories</option>
+        </select>
+        <button id="bm-add-btn" type="button" class="bm-add-btn">+ Add Bookmark</button>
+      </div>
+      <div id="bm-form-wrap" style="display:none;">
+        <form id="bm-form" class="bm-form">
+          <div class="bm-form-title" id="bm-form-title">Add Bookmark</div>
+          <input type="hidden" id="bm-id" />
+          <div class="bm-form-grid">
+            <label class="bm-label">Name
+              <input type="text" id="bm-name" class="status-input" required placeholder="e.g. 40m FT8" />
+            </label>
+            <label class="bm-label">Category
+              <input type="text" id="bm-category-input" class="status-input" placeholder="Uncategorised" />
+            </label>
+            <label class="bm-label">Frequency (Hz)
+              <input type="number" id="bm-freq" class="status-input" required min="0" placeholder="e.g. 7074000" />
+            </label>
+            <label class="bm-label">Mode
+              <input type="text" id="bm-mode" class="status-input" list="bm-mode-list" required placeholder="e.g. DIG" />
+              <datalist id="bm-mode-list">
+                <option value="LSB">
+                <option value="USB">
+                <option value="AM">
+                <option value="FM">
+                <option value="DIG">
+                <option value="CW">
+                <option value="WFM">
+              </datalist>
+            </label>
+            <label class="bm-label">Bandwidth (Hz)
+              <input type="number" id="bm-bw" class="status-input" min="0" placeholder="optional" />
+            </label>
+            <label class="bm-label">Decoders (comma-separated)
+              <input type="text" id="bm-decoders-input" class="status-input" placeholder="e.g. ft8, wspr" />
+            </label>
+            <label class="bm-label bm-label-wide">Comment
+              <input type="text" id="bm-comment" class="status-input" placeholder="optional" />
+            </label>
+          </div>
+          <div class="bm-form-actions">
+            <button type="submit" class="bm-save-btn">Save</button>
+            <button type="button" id="bm-form-cancel">Cancel</button>
+          </div>
+        </form>
+      </div>
+      <div id="bm-table-wrap">
+        <table class="bm-table">
+          <thead>
+            <tr>
+              <th>Name</th>
+              <th>Frequency</th>
+              <th>Mode</th>
+              <th>BW</th>
+              <th>Category</th>
+              <th>Decoders</th>
+              <th>Comment</th>
+              <th>Actions</th>
+            </tr>
+          </thead>
+          <tbody id="bm-tbody"></tbody>
+        </table>
+        <div id="bm-empty" class="bm-empty" style="display:none;">No bookmarks yet. Click <strong>+ Add Bookmark</strong> to save a frequency.</div>
+      </div>
+    </div>
     <div id="tab-plugins" class="tab-panel" style="display:none;">
       <div class="sub-tab-bar">
         <button class="sub-tab active" data-subtab="overview">Overview</button>
@@ -422,5 +493,6 @@
   <script src="/ft8.js"></script>
   <script src="/wspr.js"></script>
   <script src="/cw.js"></script>
+  <script src="/bookmarks.js"></script>
 </body>
 </html>
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/bookmarks.js b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/bookmarks.js
new file mode 100644
index 0000000..b0a928b
--- /dev/null
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/bookmarks.js
@@ -0,0 +1,271 @@
+// --- Bookmarks Tab ---
+
+let bmList = [];
+let bmEditId = null;
+
+function bmFmtFreq(hz) {
+  if (!Number.isFinite(hz) || hz <= 0) return "--";
+  if (hz >= 1e9) return (hz / 1e9).toFixed(6).replace(/\.?0+$/, "") + "\u202fGHz";
+  if (hz >= 1e6) return (hz / 1e6).toFixed(6).replace(/\.?0+$/, "") + "\u202fMHz";
+  if (hz >= 1e3) return (hz / 1e3).toFixed(3).replace(/\.?0+$/, "") + "\u202fkHz";
+  return hz + "\u202fHz";
+}
+
+function bmEsc(str) {
+  const d = document.createElement("div");
+  d.appendChild(document.createTextNode(String(str)));
+  return d.innerHTML;
+}
+
+async function bmFetch(categoryFilter) {
+  let url = "/bookmarks";
+  if (categoryFilter && categoryFilter !== "") {
+    url += "?category=" + encodeURIComponent(categoryFilter);
+  }
+  try {
+    const resp = await fetch(url);
+    if (!resp.ok) throw new Error("HTTP " + resp.status);
+    bmList = await resp.json();
+  } catch (e) {
+    console.error("Failed to fetch bookmarks:", e);
+    bmList = [];
+  }
+  bmRender(bmList);
+  bmRefreshCategoryFilter(categoryFilter);
+}
+
+async function bmRefreshCategoryFilter(keepValue) {
+  const sel = document.getElementById("bm-category-filter");
+  if (!sel) return;
+  try {
+    const resp = await fetch("/bookmarks");
+    if (!resp.ok) return;
+    const all = await resp.json();
+    const cats = [...new Set(all.map((b) => b.category || "").filter(Boolean))].sort();
+    while (sel.options.length > 1) sel.remove(1);
+    cats.forEach((cat) => {
+      const opt = document.createElement("option");
+      opt.value = cat;
+      opt.textContent = cat;
+      sel.add(opt);
+    });
+    if (keepValue && cats.includes(keepValue)) sel.value = keepValue;
+  } catch (_) {}
+}
+
+function bmRender(list) {
+  const tbody = document.getElementById("bm-tbody");
+  const emptyEl = document.getElementById("bm-empty");
+  if (!tbody) return;
+  tbody.innerHTML = "";
+
+  if (list.length === 0) {
+    if (emptyEl) emptyEl.style.display = "";
+    return;
+  }
+  if (emptyEl) emptyEl.style.display = "none";
+
+  // canControl: auth is disabled, or user has control role
+  const canControl =
+    (typeof authEnabled !== "undefined" && !authEnabled) ||
+    (typeof authRole !== "undefined" && authRole === "control");
+
+  list.forEach((bm) => {
+    const tr = document.createElement("tr");
+    tr.dataset.bmId = bm.id;
+    const bwCell = bm.bandwidth_hz ? bmFmtFreq(bm.bandwidth_hz) : "--";
+    const catCell = bm.category || "Uncategorised";
+    const decoderCell = (bm.decoders || []).join(", ") || "--";
+    const commentCell = bm.comment || "";
+    tr.innerHTML =
+      `<td class="bm-col-name">${bmEsc(bm.name)}</td>` +
+      `<td class="bm-col-freq">${bmFmtFreq(bm.freq_hz)}</td>` +
+      `<td class="bm-col-mode">${bmEsc(bm.mode)}</td>` +
+      `<td class="bm-col-bw">${bwCell}</td>` +
+      `<td class="bm-col-cat">${bmEsc(catCell)}</td>` +
+      `<td class="bm-col-dec">${bmEsc(decoderCell)}</td>` +
+      `<td class="bm-col-cmt">${bmEsc(commentCell)}</td>` +
+      `<td class="bm-col-act">` +
+        `<button class="bm-tune-btn" type="button" data-bm-id="${bmEsc(bm.id)}">Tune</button>` +
+        (canControl
+          ? `<button class="bm-edit-btn" type="button" data-bm-id="${bmEsc(bm.id)}">Edit</button>` +
+            `<button class="bm-del-btn" type="button" data-bm-id="${bmEsc(bm.id)}">Del</button>`
+          : "") +
+      `</td>`;
+    tbody.appendChild(tr);
+  });
+}
+
+function bmOpenForm(bm) {
+  const wrap = document.getElementById("bm-form-wrap");
+  if (!wrap) return;
+  bmEditId = bm ? bm.id : null;
+
+  document.getElementById("bm-id").value = bm ? bm.id : "";
+  document.getElementById("bm-name").value = bm ? bm.name : "";
+  document.getElementById("bm-freq").value = bm ? bm.freq_hz : "";
+  document.getElementById("bm-mode").value = bm ? bm.mode : "";
+  document.getElementById("bm-bw").value = bm && bm.bandwidth_hz ? bm.bandwidth_hz : "";
+  document.getElementById("bm-category-input").value = bm ? (bm.category || "") : "";
+  document.getElementById("bm-comment").value = bm ? (bm.comment || "") : "";
+  document.getElementById("bm-decoders-input").value = bm ? (bm.decoders || []).join(", ") : "";
+  document.getElementById("bm-form-title").textContent = bm ? "Edit Bookmark" : "Add Bookmark";
+
+  wrap.style.display = "";
+  document.getElementById("bm-name").focus();
+}
+
+function bmCloseForm() {
+  const wrap = document.getElementById("bm-form-wrap");
+  if (wrap) wrap.style.display = "none";
+  bmEditId = null;
+}
+
+function bmPrefillFromStatus() {
+  // Use globals maintained by app.js (updated by SSE stream)
+  if (typeof lastFreqHz === "number" && Number.isFinite(lastFreqHz)) {
+    document.getElementById("bm-freq").value = Math.round(lastFreqHz);
+  }
+  if (typeof lastModeName === "string" && lastModeName) {
+    document.getElementById("bm-mode").value = lastModeName;
+  }
+  if (typeof currentBandwidthHz === "number" && currentBandwidthHz > 0) {
+    document.getElementById("bm-bw").value = Math.round(currentBandwidthHz);
+  }
+}
+
+async function bmSave(e) {
+  e.preventDefault();
+  const id = document.getElementById("bm-id").value;
+  const name = document.getElementById("bm-name").value.trim();
+  const freqStr = document.getElementById("bm-freq").value;
+  const freq_hz = parseInt(freqStr, 10);
+  const mode = document.getElementById("bm-mode").value.trim();
+  const bwStr = document.getElementById("bm-bw").value;
+  const bandwidth_hz = bwStr ? parseInt(bwStr, 10) : null;
+  const category = document.getElementById("bm-category-input").value.trim();
+  const comment = document.getElementById("bm-comment").value.trim();
+  const decoderStr = document.getElementById("bm-decoders-input").value;
+  const decoders = decoderStr
+    .split(",")
+    .map((s) => s.trim())
+    .filter(Boolean);
+
+  if (!name || !Number.isFinite(freq_hz) || !mode) {
+    alert("Name, Frequency, and Mode are required.");
+    return;
+  }
+
+  const body = { name, freq_hz, mode, bandwidth_hz, category, comment, decoders };
+
+  try {
+    let resp;
+    if (id) {
+      resp = await fetch("/bookmarks/" + encodeURIComponent(id), {
+        method: "PUT",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(body),
+      });
+    } else {
+      resp = await fetch("/bookmarks", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(body),
+      });
+    }
+    if (!resp.ok) {
+      const text = await resp.text();
+      throw new Error(text || "HTTP " + resp.status);
+    }
+    bmCloseForm();
+    await bmFetch(document.getElementById("bm-category-filter").value);
+  } catch (err) {
+    console.error("Failed to save bookmark:", err);
+    alert("Failed to save bookmark: " + err.message);
+  }
+}
+
+async function bmDelete(id) {
+  if (!confirm("Delete this bookmark?")) return;
+  try {
+    const resp = await fetch("/bookmarks/" + encodeURIComponent(id), {
+      method: "DELETE",
+    });
+    if (!resp.ok) throw new Error("HTTP " + resp.status);
+    await bmFetch(document.getElementById("bm-category-filter").value);
+  } catch (err) {
+    console.error("Failed to delete bookmark:", err);
+    alert("Failed to delete bookmark: " + err.message);
+  }
+}
+
+async function bmApply(bm) {
+  try {
+    await postPath("/set_freq?hz=" + bm.freq_hz);
+    await postPath("/set_mode?mode=" + encodeURIComponent(bm.mode));
+    if (bm.bandwidth_hz) {
+      await postPath("/set_bandwidth?hz=" + bm.bandwidth_hz);
+    }
+    // Toggle decoders when in DIG mode
+    if (bm.mode === "DIG" && Array.isArray(bm.decoders)) {
+      const statusResp = await fetch("/status");
+      if (statusResp.ok) {
+        const st = await statusResp.json();
+        const wantFt8 = bm.decoders.includes("ft8");
+        if (wantFt8 !== !!st.ft8_decode_enabled) {
+          await postPath("/toggle_ft8_decode");
+        }
+        const wantWspr = bm.decoders.includes("wspr");
+        if (wantWspr !== !!st.wspr_decode_enabled) {
+          await postPath("/toggle_wspr_decode");
+        }
+      }
+    }
+  } catch (err) {
+    console.error("Failed to apply bookmark:", err);
+  }
+}
+
+// --- Event wiring ---
+(function initBookmarks() {
+  // Refresh list when the Bookmarks tab is activated
+  document.querySelector(".tab-bar").addEventListener("click", (e) => {
+    const btn = e.target.closest('.tab[data-tab="bookmarks"]');
+    if (!btn) return;
+    bmFetch(document.getElementById("bm-category-filter").value);
+  });
+
+  // Add Bookmark button — open form and prefill from current rig state
+  document.getElementById("bm-add-btn").addEventListener("click", () => {
+    bmOpenForm(null);
+    bmPrefillFromStatus();
+  });
+
+  // Category filter dropdown
+  document.getElementById("bm-category-filter").addEventListener("change", (e) => {
+    bmFetch(e.target.value);
+  });
+
+  // Form submit
+  document.getElementById("bm-form").addEventListener("submit", bmSave);
+
+  // Form cancel
+  document.getElementById("bm-form-cancel").addEventListener("click", bmCloseForm);
+
+  // Table action buttons (event delegation)
+  document.getElementById("bm-tbody").addEventListener("click", async (e) => {
+    const tuneBtn = e.target.closest(".bm-tune-btn");
+    const editBtn = e.target.closest(".bm-edit-btn");
+    const delBtn = e.target.closest(".bm-del-btn");
+
+    if (tuneBtn) {
+      const bm = bmList.find((b) => b.id === tuneBtn.dataset.bmId);
+      if (bm) await bmApply(bm);
+    } else if (editBtn) {
+      const bm = bmList.find((b) => b.id === editBtn.dataset.bmId);
+      if (bm) bmOpenForm(bm);
+    } else if (delBtn) {
+      await bmDelete(delBtn.dataset.bmId);
+    }
+  });
+})();
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css
index 77db945..9419e5e 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/style.css
@@ -1904,3 +1904,156 @@ button:focus-visible, input:focus-visible, select:focus-visible {
   --wavelength-fg: #7030a0;
   --spectrum-bg: #f0d8ff;
 }
+
+/* ============================================================
+   Bookmarks tab
+   ============================================================ */
+
+.bm-toolbar {
+  display: flex;
+  align-items: center;
+  gap: 0.6rem;
+  padding: 0.6rem 0.75rem 0.4rem;
+  flex-wrap: wrap;
+}
+
+.bm-add-btn {
+  background: var(--accent-green);
+  color: #fff;
+  border: none;
+  border-radius: 0.35rem;
+  padding: 0.4rem 0.85rem;
+  font-size: 0.85rem;
+  font-weight: 600;
+  cursor: pointer;
+}
+
+.bm-add-btn:hover {
+  opacity: 0.88;
+}
+
+.bm-form {
+  background: var(--card-bg);
+  border: 1px solid var(--border-light);
+  border-radius: 0.5rem;
+  padding: 0.9rem 1rem;
+  margin: 0 0.75rem 0.6rem;
+}
+
+.bm-form-title {
+  font-weight: 700;
+  margin-bottom: 0.65rem;
+  font-size: 0.95rem;
+  color: var(--text-heading);
+}
+
+.bm-form-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
+  gap: 0.5rem 0.75rem;
+}
+
+.bm-label {
+  display: flex;
+  flex-direction: column;
+  gap: 0.2rem;
+  font-size: 0.78rem;
+  color: var(--text-muted);
+}
+
+.bm-label input {
+  font-size: 0.88rem;
+  padding: 0.35rem 0.5rem;
+}
+
+.bm-label-wide {
+  grid-column: 1 / -1;
+}
+
+.bm-form-actions {
+  display: flex;
+  gap: 0.5rem;
+  margin-top: 0.75rem;
+}
+
+.bm-save-btn {
+  background: var(--accent-green);
+  color: #fff;
+  border: none;
+  border-radius: 0.35rem;
+  padding: 0.4rem 1rem;
+  font-weight: 600;
+  cursor: pointer;
+}
+
+.bm-save-btn:hover {
+  opacity: 0.88;
+}
+
+.bm-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 0.82rem;
+  margin: 0 0 0.5rem;
+}
+
+.bm-table th {
+  text-align: left;
+  padding: 0.35rem 0.6rem;
+  border-bottom: 1px solid var(--border);
+  color: var(--text-muted);
+  font-weight: 600;
+  white-space: nowrap;
+}
+
+.bm-table td {
+  padding: 0.35rem 0.6rem;
+  border-bottom: 1px solid var(--border);
+  vertical-align: middle;
+}
+
+.bm-table tr:hover td {
+  background: var(--btn-bg);
+}
+
+.bm-col-freq,
+.bm-col-bw {
+  white-space: nowrap;
+  font-variant-numeric: tabular-nums;
+}
+
+.bm-col-mode,
+.bm-col-dec {
+  white-space: nowrap;
+}
+
+.bm-col-act {
+  white-space: nowrap;
+}
+
+.bm-col-act button {
+  font-size: 0.78rem;
+  padding: 0.2rem 0.5rem;
+  margin-right: 0.25rem;
+  border-radius: 0.25rem;
+  border: 1px solid var(--btn-border);
+  background: var(--btn-bg);
+  color: var(--text);
+  cursor: pointer;
+}
+
+.bm-col-act button:hover {
+  background: var(--border-light);
+}
+
+.bm-del-btn {
+  color: var(--accent-red) !important;
+  border-color: var(--accent-red) !important;
+}
+
+.bm-empty {
+  padding: 2rem 1rem;
+  text-align: center;
+  color: var(--text-muted);
+  font-size: 0.9rem;
+}