diff --git a/htdocs/map.js b/htdocs/map.js
index 089cc5b..5915eb7 100644
--- a/htdocs/map.js
+++ b/htdocs/map.js
@@ -32,7 +32,7 @@ $(function(){
     var retention_time = 2 * 60 * 60 * 1000;
     var strokeOpacity = 0.8;
     var fillOpacity = 0.35;
-    var callsign_url = null;
+    var callsign_service;
 
     var colorKeys = {};
     var colorScale = chroma.scale(['red', 'blue', 'green']).mode('hsl');
@@ -289,8 +289,8 @@ $(function(){
                         if ('map_position_retention_time' in config) {
                             retention_time = config.map_position_retention_time * 1000;
                         }
-                        if ('callsign_url' in config) {
-                            callsign_url = config['callsign_url'];
+                        if ('callsign_service' in config) {
+                            callsign_service = config['callsign_service'];
                         }
                     break;
                     case "update":
@@ -361,12 +361,17 @@ $(function(){
 
     var linkifySource = function(source) {
         var callsignString = sourceToString(source);
-        if (callsign_url == null || callsign_url === '')
-            return callsignString;
-        else
-            return '<a target="callsign_info" href="' +
-                callsign_url.replaceAll('{}', source.callsign) +
-                '">' + callsignString + '</a>';
+        switch (callsign_service) {
+            case "qrzcq":
+                return '<a target="callsign_info" href="https://www.qrzcq.com/call/' + source.callsign + '">' + callsignString + '</a>';
+            case "qrz":
+                return '<a target="callsign_info" href="https://www.qrz.com/db/' + source.callsign + '">' + callsignString + '</a>';
+            case 'aprsfi':
+                var callWithSsid = sourceToKey(source);
+                return '<a target="callsign_info" href="https://aprs.fi/info/a/' + callWithSsid + '">' + callsignString + '</a>';
+            default:
+                return callsignString;
+        }
     };
 
     var distanceKm = function(p1, p2) {
diff --git a/owrx/config/defaults.py b/owrx/config/defaults.py
index 203c257..077b72f 100644
--- a/owrx/config/defaults.py
+++ b/owrx/config/defaults.py
@@ -2,7 +2,7 @@ from owrx.property import PropertyLayer
 
 
 defaultConfig = PropertyLayer(
-    version=7,
+    version=8,
     max_clients=20,
     receiver_name="[Callsign]",
     receiver_location="Budapest, Hungary",
@@ -147,7 +147,6 @@ defaultConfig = PropertyLayer(
     squelch_auto_margin=10,
     google_maps_api_key="",
     map_position_retention_time=2 * 60 * 60,
-    callsign_url="https://www.qrzcq.com/call/{}",
     decoding_queue_workers=2,
     decoding_queue_length=10,
     wsjt_decoding_depth=3,
diff --git a/owrx/config/migration.py b/owrx/config/migration.py
index ec0068b..5c97eee 100644
--- a/owrx/config/migration.py
+++ b/owrx/config/migration.py
@@ -111,8 +111,21 @@ class ConfigMigratorVersion6(ConfigMigrator):
         config["version"] = 7
 
 
+class ConfigMigratorVersion7(ConfigMigrator):
+    def migrate(self, config):
+        if "callsign_url" in config:
+            if "qrzcq.com" in config["callsign_url"]:
+                config["callsign_service"] = "qrzcq"
+            elif "qrz.com" in config["callsign_url"]:
+                config["callsign_service"] = "qrz"
+            else:
+                logger.warning("unable to migrate callsign_url! please check settings!")
+            del config["callsign_url"]
+        config["version"] = 8
+
+
 class Migrator(object):
-    currentVersion = 7
+    currentVersion = 8
     migrators = {
         1: ConfigMigratorVersion1(),
         2: ConfigMigratorVersion2(),
@@ -120,6 +133,7 @@ class Migrator(object):
         4: ConfigMigratorVersion4(),
         5: ConfigMigratorVersion5(),
         6: ConfigMigratorVersion6(),
+        7: ConfigMigratorVersion7(),
     }
 
     @staticmethod
diff --git a/owrx/connection.py b/owrx/connection.py
index dfb526c..ba900d6 100644
--- a/owrx/connection.py
+++ b/owrx/connection.py
@@ -456,7 +456,7 @@ class MapConnection(OpenWebRxClient):
             "google_maps_api_key",
             "receiver_gps",
             "map_position_retention_time",
-            "callsign_url",
+            "callsign_service",
             "receiver_name",
         )
         filtered_config.wire(self.write_config)
diff --git a/owrx/controllers/settings/general.py b/owrx/controllers/settings/general.py
index 7958368..08dd0eb 100644
--- a/owrx/controllers/settings/general.py
+++ b/owrx/controllers/settings/general.py
@@ -168,12 +168,17 @@ class GeneralSettingsController(SettingsFormController):
                     infotext="Specifies how log markers / grids will remain visible on the map",
                     append="s",
                 ),
-                TextInput(
-                    "callsign_url",
-                    "Callsign database URL",
-                    infotext="Specifies callsign lookup URL, such as QRZ.COM "
-                    + "or QRZCQ.COM. Place curly brackers ({}) where callsign "
-                    + "is supposed to be.",
+                DropdownInput(
+                    "callsign_service",
+                    "Callsign database service",
+                    infotext="Allows users to navigate to an external callsign database service by clicking on "
+                    + "callsigns",
+                    options=[
+                        Option(None, "disabled"),
+                        Option("qrzcq", "qrzcq.com"),
+                        Option("qrz", "qrz.com"),
+                        Option("aprsfi", "aprs.fi"),
+                    ],
                 ),
             ),
         ]