diff --git a/gui/preload-main.js b/gui/preload-main.js
index f3c78b27..f1e66f10 100644
--- a/gui/preload-main.js
+++ b/gui/preload-main.js
@@ -1,5 +1,5 @@
 const path = require('path');
-const {ipcRenderer} = require('electron');
+const {ipcRenderer, shell} = require('electron');
 const exec = require('child_process').spawn;
 const sock = require('./sock.js');
 const daemon = require('./daemon.js');
@@ -1076,6 +1076,11 @@ document.getElementById('hamlib_rigctld_stop').addEventListener('click', () => {
         sock.stopBeacon();
     });
 
+    // Explorer button clicked
+    document.getElementById("openExplorer").addEventListener("click", () => {
+        shell.openExternal('https://explorer.freedata.app/?myCall=' + document.getElementById("myCall").value);
+    });
+
     // startTNC button clicked
     document.getElementById("startTNC").addEventListener("click", () => {
 
diff --git a/gui/src/index.html b/gui/src/index.html
index 4c18ac78..f90043db 100644
--- a/gui/src/index.html
+++ b/gui/src/index.html
@@ -44,6 +44,7 @@
 				<button class="btn btn-sm btn-danger" id="stop_transmission_connection" type="button"> <i class="bi bi-x-octagon-fill" style="font-size: 1rem; color: white;"></i> STOP </button>
 			</div>
 			<div class="btn-toolbar" role="toolbar">
+				<button class="btn btn-sm btn-primary me-4  position-relative" id="openExplorer" type="button" data-bs-placement="bottom" data-bs-toggle="tooltip" data-bs-html="false" title="View explorer map"> <strong>Explorer</strong> <i class="bi bi-pin-map-fill" style="font-size: 1rem; color: white;"></i></button>
 				<button class="btn btn-sm btn-primary me-4  position-relative" id="openRFChat" type="button" data-bs-placement="bottom" data-bs-toggle="tooltip" data-bs-html="false" title="Open the HF chat module. This is currently just a test and not finished, yet!"> <strong>RF Chat</strong> <i class="bi bi-chat-left-text-fill" style="font-size: 1rem; color: white;"></i> <span class="position-absolute top-0 start-100 translate-middle badge rounded-pill bg-danger">.</span> </button> <span data-bs-placement="bottom" data-bs-toggle="tooltip" data-bs-html="false" title="View the received files. This is currently under development!">
            				<!--
 
@@ -1332,4 +1333,4 @@
 	</div>
 </body>
 
-</html>
\ No newline at end of file
+</html>