diff --git a/frontend/src/components/MaplibreViewer.tsx b/frontend/src/components/MaplibreViewer.tsx
index a0dc81a..ae89d35 100644
--- a/frontend/src/components/MaplibreViewer.tsx
+++ b/frontend/src/components/MaplibreViewer.tsx
@@ -19,7 +19,7 @@ import {
     svgTanker, svgRecon, svgPlanePink, svgPlaneAlertRed, svgPlaneDarkBlue,
     svgPlaneWhiteAlert, svgHeliPink, svgHeliAlertRed, svgHeliDarkBlue,
     svgHeliBlue, svgHeliLime, svgHeliWhiteAlert, svgPlaneBlack, svgHeliBlack,
-    svgDrone, svgDataCenter, svgShipGray, svgShipRed, svgShipYellow,
+    svgDrone, svgDataCenter, svgRadioTower, svgShipGray, svgShipRed, svgShipYellow,
     svgShipBlue, svgShipWhite, svgCarrier, svgCctv, svgWarning, svgThreat,
     svgTriangleYellow, svgTriangleRed,
     svgFireYellow, svgFireOrange, svgFireRed, svgFireDarkRed,
@@ -423,6 +423,7 @@ const MaplibreViewer = ({ data, activeLayers, onEntityClick, flyToLocation, sele
         // Deferred icons — for off-by-default layers and rare variants
         // Loaded in next frame to avoid blocking initial map render
         setTimeout(() => {
+            loadImg('svgRadioTower', svgRadioTower);
             loadImg('svgPlanePink', svgPlanePink);
             loadImg('svgPlaneAlertRed', svgPlaneAlertRed);
             loadImg('svgPlaneDarkBlue', svgPlaneDarkBlue);
@@ -1763,38 +1764,37 @@ const MaplibreViewer = ({ data, activeLayers, onEntityClick, flyToLocation, sele
                     </Source>
                 )}
 
-                {/* KiwiSDR Receivers — clustered amber dots */}
+                {/* KiwiSDR Receivers — radio tower icons */}
                 {kiwisdrGeoJSON && (
                     <Source id="kiwisdr" type="geojson" data={kiwisdrGeoJSON as any} cluster={true} clusterRadius={50} clusterMaxZoom={14}>
+                        {/* Cluster glow ring */}
                         <Layer
                             id="kiwisdr-clusters"
                             type="circle"
                             filter={['has', 'point_count']}
                             paint={{
-                                'circle-color': '#f59e0b',
-                                'circle-radius': ['step', ['get', 'point_count'], 14, 10, 18, 50, 24, 200, 30],
-                                'circle-opacity': 0.8,
-                                'circle-stroke-width': 2,
-                                'circle-stroke-color': '#d97706'
+                                'circle-color': 'rgba(245, 158, 11, 0.15)',
+                                'circle-radius': ['step', ['get', 'point_count'], 18, 10, 22, 50, 28, 200, 34],
+                                'circle-stroke-width': 1.5,
+                                'circle-stroke-color': 'rgba(245, 158, 11, 0.5)'
                             }}
                         />
                         <Layer
                             id="kiwisdr-cluster-count"
                             type="symbol"
                             filter={['has', 'point_count']}
-                            layout={{ 'text-field': '{point_count_abbreviated}', 'text-size': 12, 'text-allow-overlap': true }}
-                            paint={{ 'text-color': '#ffffff', 'text-halo-color': '#000000', 'text-halo-width': 1 }}
+                            layout={{ 'text-field': '{point_count_abbreviated}', 'text-size': 11, 'text-allow-overlap': true, 'text-font': ['Noto Sans Bold'] }}
+                            paint={{ 'text-color': '#f59e0b', 'text-halo-color': '#000000', 'text-halo-width': 1.5 }}
                         />
+                        {/* Individual tower icons */}
                         <Layer
                             id="kiwisdr-layer"
-                            type="circle"
+                            type="symbol"
                             filter={['!', ['has', 'point_count']]}
-                            paint={{
-                                'circle-color': '#f59e0b',
-                                'circle-radius': ['interpolate', ['linear'], ['zoom'], 2, 2, 8, 4, 14, 6],
-                                'circle-opacity': 0.9,
-                                'circle-stroke-width': 1,
-                                'circle-stroke-color': '#d97706'
+                            layout={{
+                                'icon-image': 'svgRadioTower',
+                                'icon-size': ['interpolate', ['linear'], ['zoom'], 2, 0.5, 8, 0.8, 14, 1.0],
+                                'icon-allow-overlap': true,
                             }}
                         />
                     </Source>
diff --git a/frontend/src/components/map/icons/AircraftIcons.ts b/frontend/src/components/map/icons/AircraftIcons.ts
index fccba06..7d47990 100644
--- a/frontend/src/components/map/icons/AircraftIcons.ts
+++ b/frontend/src/components/map/icons/AircraftIcons.ts
@@ -33,6 +33,7 @@ export const svgShipBlue = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg x
 export const svgShipWhite = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="18" height="36" viewBox="0 0 24 24" fill="none"><path d="M5 21 L5 8 L12 2 L19 8 L19 21 C19 23 5 23 5 21 Z" fill="white" stroke="#000" stroke-width="1"/><rect x="7" y="10" width="10" height="8" fill="#90cdf4" stroke="#000" stroke-width="1"/><circle cx="12" cy="14" r="2" fill="yellow" stroke="#000"/></svg>`)}`;
 export const svgCarrier = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 24 24" fill="orange" stroke="black"><polygon points="3,21 21,21 20,4 16,4 16,3 12,3 12,4 4,4" /><rect x="15" y="6" width="3" height="10" /></svg>`)}`;
 export const svgCctv = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="cyan" stroke-width="2"><path d="M16.75 12h3.632a1 1 0 0 1 .894 1.447l-2.034 4.069a1 1 0 0 1-.894.553H5.652a1 1 0 0 1-.894-.553L2.724 13.447A1 1 0 0 1 3.618 12h3.632M14 12V8a2 2 0 0 0-2-2h-4a2 2 0 0 0-2 2v4a4 4 0 1 0 8 0Z" /></svg>`)}`;
+export const svgRadioTower = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#f59e0b" stroke-width="1.5"><line x1="12" y1="10" x2="12" y2="23" stroke="#f59e0b" stroke-width="2"/><line x1="8" y1="23" x2="16" y2="23" stroke="#f59e0b" stroke-width="2" stroke-linecap="round"/><line x1="9" y1="16" x2="15" y2="16" stroke="#f59e0b" stroke-width="1.5" stroke-linecap="round"/><circle cx="12" cy="9" r="2" fill="#f59e0b" stroke="none"/><path d="M8 6a5.5 5.5 0 0 1 8 0" fill="none" stroke="#f59e0b" stroke-width="1.5" stroke-linecap="round"/><path d="M5.5 3.5a9 9 0 0 1 13 0" fill="none" stroke="#f59e0b" stroke-width="1.5" stroke-linecap="round" opacity="0.6"/></svg>`)}`;
 export const svgWarning = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="yellow" stroke="black"><path d="m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z" /><path d="M12 9v4" /><path d="M12 17h.01" /></svg>`)}`;
 export const svgThreat = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24" fill="#ffff00" stroke="#ff0000" stroke-width="2"><path d="m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z" /><path d="M12 9v4" /><path d="M12 17h.01" /></svg>`)}`;
 export const svgTriangleYellow = `data:image/svg+xml;utf8,${encodeURIComponent(`<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="#ffaa00" stroke="#000" stroke-width="1"><path d="M1 21h22L12 2 1 21z"/></svg>`)}`;