diff --git a/server/static/index.html b/server/static/index.html
index 49ac2b2..d2ca561 100644
--- a/server/static/index.html
+++ b/server/static/index.html
@@ -547,6 +547,7 @@
     let apiDebugTxMarker = null;
     let apiDebugRxMarker = null;
     let apiDebugLineLayer = null;
+    let apiDebugBeamLayer = null;
     let apiDebugCursorDist = null;
     let apiDebugCursorMarker = null;
     let apiDebugGroundProfile = null;
@@ -2201,6 +2202,41 @@
       }
     }
 
+    function clearApiDebugBeam() {
+      if (apiDebugBeamLayer) {
+        map.removeLayer(apiDebugBeamLayer);
+        apiDebugBeamLayer = null;
+      }
+    }
+
+    function renderApiDebugBeam(data) {
+      const feature = data?.geojson || data;
+      if (!feature?.geometry) {
+        apiDebugSetSummary('Ответ antenna/beam не содержит GeoJSON geometry.');
+        return;
+      }
+      clearApiDebugBeam();
+      apiDebugBeamLayer = L.geoJSON(feature, {
+        style: {
+          color: '#ff9800',
+          weight: 2,
+          opacity: 0.95,
+          fillColor: '#ff9800',
+          fillOpacity: 0.22
+        }
+      }).addTo(map);
+      const props = feature.properties || {};
+      const bounds = apiDebugBeamLayer.getBounds();
+      if (bounds.isValid()) {
+        setMapViewProgrammatically(() => map.fitBounds(bounds, { padding: [40, 40], maxZoom: 15 }));
+      }
+      apiDebugSetSummary(
+        `<b>Сектор антенны:</b> ${escapeHtml(props.pattern || 'sector')} · ` +
+        `azimuth ${fmtNum(props.azimuth_deg, 0, '°')} · radius ${fmtNum(props.radius_m, 0, ' m')}<br>` +
+        `Оранжевая заливка на карте — зона сектора из GeoJSON ответа.`
+      );
+    }
+
     function clearApiDebugCursorMarker() {
       if (apiDebugCursorMarker) {
         map.removeLayer(apiDebugCursorMarker);
@@ -2318,6 +2354,7 @@
         if (el) el.value = '';
       });
       refreshApiDebugOverlay();
+      clearApiDebugBeam();
       clearApiDebugCursorMarker();
       apiDebugGroundProfile = null;
       apiDebugSurfaceProfile = null;
@@ -2514,6 +2551,7 @@
         else if (kind === 'los') apiDebugSetSummary(formatApiDebugLosSummary(data));
         else if (kind === 'budget') apiDebugSetSummary(formatApiDebugBudgetSummary(data));
         else if (kind === 'elevation') apiDebugSetSummary(formatApiDebugPointSummary(data));
+        else if (kind === 'beam') renderApiDebugBeam(data);
         else apiDebugSetSummary('Ответ получен.');
       } catch (e) {
         apiDebugSetStatus(`Ошибка запроса: ${e.message || e}`, true);