diff --git a/htdocs/css/openwebrx.css b/htdocs/css/openwebrx.css
index cc758f55..96431535 100644
--- a/htdocs/css/openwebrx.css
+++ b/htdocs/css/openwebrx.css
@@ -1402,6 +1402,18 @@ img.openwebrx-mirror-img
     animation-iteration-count: infinite;
 }
 
+.openwebrx-squelch-auto .scanner {
+    display: none;
+}
+
+.openwebrx-squelch-auto.highlighted .scanner {
+    display: initial;
+}
+
+.openwebrx-squelch-auto.highlighted .squelch {
+    display: none;
+}
+
 .openwebrx-slider-button svg {
     position:relative;
     top: 1px;
diff --git a/htdocs/gfx/svg-defs.svg b/htdocs/gfx/svg-defs.svg
index 19451804..72bd8b7c 100644
--- a/htdocs/gfx/svg-defs.svg
+++ b/htdocs/gfx/svg-defs.svg
@@ -30,5 +30,6 @@
         <g id="left" fill="#fff" stroke="#fff" stroke-width="4.0"><path d="M 55,15 55,65 15,40 Z"/></g>
         <g id="right" fill="#fff" stroke="#fff" stroke-width="4.0"><path d="M 25,15 25,65 65,40 Z"/></g>
         <g id="spectrum" fill="#0000" stroke="#fff" stroke-width="7"><path d="M 9.7579071,55.000065 C 9.7579071,55.000065 15,10 25.288469,9.8661268 35,10 45,70 54.985123,70.170795 65,70 69.983185,25.030854 69.983185,25.030854"/><path d="m 0,40 80,0"/></g>
+        <g id="scanner-running"><g stroke="#fff" stroke-width="8"><path d="M5 40A35 35 0 0 1 26.606 7.664a35 35 0 0 1 38.143 7.587" fill="none"/><path d="m68.284 11.716 2.828 9.9-9.899-2.829z" fill="#fff"/></g><path d="m 27.185152,59.581257 0,-7.177735 q 0.966797,0.878907 2.285156,1.582032 1.347657,0.703125 2.841797,1.201172 1.494141,0.46875 2.988281,0.732421 1.494141,0.263672 2.753907,0.263672 4.394531,0 6.533203,-1.464843 2.167969,-1.464844 2.167969,-4.248047 0,-1.494141 -0.732422,-2.578125 -0.703125,-1.113282 -1.992188,-2.021485 -1.289062,-0.908203 -3.046875,-1.728515 -1.728515,-0.84961 -3.720703,-1.757813 -2.138672,-1.142578 -3.984375,-2.314453 -1.845703,-1.171875 -3.222656,-2.578125 -1.347656,-1.435547 -2.138672,-3.222656 -0.761719,-1.78711 -0.761719,-4.189453 0,-2.958985 1.31836,-5.126953 1.347656,-2.197266 3.515625,-3.603516 2.197265,-1.435547 4.980468,-2.109375 2.783203,-0.703125 5.683594,-0.703125 6.591797,0 9.609375,1.494141 l 0,6.884765 q -3.574219,-2.578125 -9.199219,-2.578125 -1.552734,0 -3.105468,0.292969 -1.523438,0.292969 -2.753907,0.966797 -1.201172,0.673828 -1.96289,1.728515 -0.761719,1.054688 -0.761719,2.548829 0,1.40625 0.585937,2.43164 0.585938,1.025391 1.699219,1.875 1.142578,0.84961 2.753906,1.669922 1.640625,0.791016 3.779297,1.728516 2.197266,1.142578 4.13086,2.402343 1.96289,1.259766 3.427734,2.783204 1.494141,1.523437 2.34375,3.398437 0.878906,1.845703 0.878906,4.21875 0,3.193359 -1.289062,5.390625 -1.289063,2.197266 -3.486328,3.574219 -2.167969,1.376953 -5.009766,1.992187 -2.841797,0.615235 -6.005859,0.615235 -1.054688,0 -2.607422,-0.175782 -1.523438,-0.146484 -3.134766,-0.46875 -1.611328,-0.292968 -3.046875,-0.732421 -1.435547,-0.439454 -2.314453,-0.996094 z" fill="#fff"/><g stroke="#fff" stroke-width="8"><path d="M75 40a35 35 0 0 1-21.606 32.336 35 35 0 0 1-38.143-7.587" fill="none"/><path d="m11.716 68.284-2.828-9.9 9.899 2.829z" fill="#fff"/></g></g>
     </defs>
 </svg>
diff --git a/htdocs/index.html b/htdocs/index.html
index d9b375af..77baa773 100644
--- a/htdocs/index.html
+++ b/htdocs/index.html
@@ -225,7 +225,8 @@
                         </div>
                         <div class="openwebrx-panel-line">
                             <div title="Auto-set squelch level (right-click for scanner)" class="openwebrx-squelch-auto openwebrx-button openwebrx-slider-button">
-                                <svg viewBox="0 0 80 80"><use xlink:href="static/gfx/svg-defs.svg#squelch"></use></svg>
+                                <svg class="squelch" viewBox="0 0 80 80"><use xlink:href="static/gfx/svg-defs.svg#squelch"></use></svg>
+                                <svg class="scanner" viewBox="0 0 80 80"><use xlink:href="static/gfx/svg-defs.svg#scanner-running"></use></svg>
                             </div>
                             <input title="Squelch" class="openwebrx-squelch-slider openwebrx-panel-slider" type="range" min="-150" max="0" value="-150" step="1">
                             <div title="Auto-adjust waterfall colors (right-click for continuous)" id="openwebrx-waterfall-colors-auto" class="openwebrx-button openwebrx-slider-button">
diff --git a/htdocs/openwebrx.js b/htdocs/openwebrx.js
index 21a991f3..6fb3a363 100644
--- a/htdocs/openwebrx.js
+++ b/htdocs/openwebrx.js
@@ -1722,7 +1722,9 @@ function toggleSpectrum() {
 }
 
 function stopScanner() {
-    $('.openwebrx-squelch-auto').css('animation-name', '');
+    var $scanButton = $('.openwebrx-squelch-auto');
+    $scanButton.css('animation-name', '');
+    $scanButton.removeClass('highlighted');
     scanner.stop();
 }
 
@@ -1731,6 +1733,11 @@ function toggleScanner() {
     var on = scanner.toggle();
 
     $scanButton.css('animation-name', on? 'openwebrx-scan-animation' : '');
+    if (on) {
+        $scanButton.addClass('highlighted');
+    } else {
+        $scanButton.removeClass('highlighted');
+    }
 }
 
 /*
diff --git a/inkscape files/openwebrx-scanner-running.svg b/inkscape files/openwebrx-scanner-running.svg
new file mode 100644
index 00000000..ba23c2cf
--- /dev/null
+++ b/inkscape files/openwebrx-scanner-running.svg	
@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="80"
+   height="80"
+   viewBox="0 0 80 80"
+   version="1.1"
+   id="svg8"
+   inkscape:version="0.91 r13725"
+   sodipodi:docname="openwebrx-scanner-running.svg">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#000000"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="8.7676686"
+     inkscape:cx="5.545361"
+     inkscape:cy="50.77501"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer1"
+     inkscape:document-rotation="0"
+     showgrid="true"
+     units="px"
+     inkscape:pagecheckerboard="true"
+     inkscape:snap-object-midpoints="true"
+     inkscape:window-width="2560"
+     inkscape:window-height="1377"
+     inkscape:window-x="-8"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1"
+     inkscape:snap-grids="true">
+    <inkscape:grid
+       type="xygrid"
+       id="grid971"
+       spacingx="5"
+       spacingy="5"
+       empspacing="2" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <g
+       id="g857"
+       style="stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none">
+      <path
+         style="fill:none;stroke:#ffffff;stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         id="path833"
+         sodipodi:type="arc"
+         sodipodi:cx="40"
+         sodipodi:cy="40"
+         sodipodi:rx="35"
+         sodipodi:ry="35"
+         sodipodi:start="3.1415927"
+         sodipodi:end="5.4977871"
+         sodipodi:arc-type="arc"
+         d="M 5,40 A 35,35 0 0 1 26.606079,7.6642167 35,35 0 0 1 64.748736,15.251262"
+         sodipodi:open="true" />
+      <path
+         style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:8;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         d="m 66.870239,13.130239 2.12132,6.363961 -6.363961,-2.12132 z"
+         id="path853"
+         sodipodi:nodetypes="cccc" />
+    </g>
+    <g
+       id="g857-5"
+       style="stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none"
+       transform="rotate(180,40,40)">
+      <path
+         style="fill:none;stroke:#ffffff;stroke-width:8;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         id="path833-3"
+         sodipodi:type="arc"
+         sodipodi:cx="40"
+         sodipodi:cy="40"
+         sodipodi:rx="35"
+         sodipodi:ry="35"
+         sodipodi:start="3.1415927"
+         sodipodi:end="5.4977871"
+         sodipodi:arc-type="arc"
+         sodipodi:open="true"
+         d="M 5,39.999998 A 35,35 0 0 1 26.60608,7.6642163 35,35 0 0 1 64.748736,15.251262" />
+      <path
+         style="fill:#ffffff;fill-opacity:1;stroke:#ffffff;stroke-width:8;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+         d="m 66.870239,13.130239 2.12132,6.363961 -6.363961,-2.12132 z"
+         id="path853-5"
+         sodipodi:nodetypes="cccc" />
+    </g>
+    <g
+       style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:60px;line-height:125%;font-family:'Yu Gothic UI';-inkscape-font-specification:'Yu Gothic UI, Bold';text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       id="text4147">
+      <path
+         d="m 27.185152,59.581257 0,-7.177735 q 0.966797,0.878907 2.285156,1.582032 1.347657,0.703125 2.841797,1.201172 1.494141,0.46875 2.988281,0.732421 1.494141,0.263672 2.753907,0.263672 4.394531,0 6.533203,-1.464843 2.167969,-1.464844 2.167969,-4.248047 0,-1.494141 -0.732422,-2.578125 -0.703125,-1.113282 -1.992188,-2.021485 -1.289062,-0.908203 -3.046875,-1.728515 -1.728515,-0.84961 -3.720703,-1.757813 -2.138672,-1.142578 -3.984375,-2.314453 -1.845703,-1.171875 -3.222656,-2.578125 -1.347656,-1.435547 -2.138672,-3.222656 -0.761719,-1.78711 -0.761719,-4.189453 0,-2.958985 1.31836,-5.126953 1.347656,-2.197266 3.515625,-3.603516 2.197265,-1.435547 4.980468,-2.109375 2.783203,-0.703125 5.683594,-0.703125 6.591797,0 9.609375,1.494141 l 0,6.884765 q -3.574219,-2.578125 -9.199219,-2.578125 -1.552734,0 -3.105468,0.292969 -1.523438,0.292969 -2.753907,0.966797 -1.201172,0.673828 -1.96289,1.728515 -0.761719,1.054688 -0.761719,2.548829 0,1.40625 0.585937,2.43164 0.585938,1.025391 1.699219,1.875 1.142578,0.84961 2.753906,1.669922 1.640625,0.791016 3.779297,1.728516 2.197266,1.142578 4.13086,2.402343 1.96289,1.259766 3.427734,2.783204 1.494141,1.523437 2.34375,3.398437 0.878906,1.845703 0.878906,4.21875 0,3.193359 -1.289062,5.390625 -1.289063,2.197266 -3.486328,3.574219 -2.167969,1.376953 -5.009766,1.992187 -2.841797,0.615235 -6.005859,0.615235 -1.054688,0 -2.607422,-0.175782 -1.523438,-0.146484 -3.134766,-0.46875 -1.611328,-0.292968 -3.046875,-0.732421 -1.435547,-0.439454 -2.314453,-0.996094 z"
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+         id="path4143" />
+    </g>
+  </g>
+</svg>