diff --git a/codec2talkie/build.gradle b/codec2talkie/build.gradle
index cf39395..c46ddff 100644
--- a/codec2talkie/build.gradle
+++ b/codec2talkie/build.gradle
@@ -10,8 +10,8 @@ android {
         applicationId "com.radio.codec2talkie"
         minSdkVersion 23
         targetSdkVersion 30
-        versionCode 163
-        versionName "1.63"
+        versionCode 164
+        versionName "1.64"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
diff --git a/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/AprsIs.java b/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/AprsIs.java
index a4934c3..9228ca3 100644
--- a/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/AprsIs.java
+++ b/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/AprsIs.java
@@ -61,6 +61,7 @@ public class AprsIs implements Protocol, Runnable {
     private String _ssid;
     private int _filterRadius;
     private String _filter;
+    private int _defaultPort;
 
     private final ByteBuffer _fromAprsIsQueue;
     private final ByteBuffer _toAprsIsQueue;
@@ -96,6 +97,7 @@ public class AprsIs implements Protocol, Runnable {
         _filterRadius = Integer.parseInt(sharedPreferences.getString(PreferenceKeys.APRS_IS_RADIUS, "10"));
         _filter = sharedPreferences.getString(PreferenceKeys.APRS_IS_FILTER, "");
         _isLoopbackTransport = SettingsWrapper.isLoopbackTransport(sharedPreferences);
+        _defaultPort = Integer.parseInt(sharedPreferences.getString(PreferenceKeys.APRS_IS_TCPIP_SERVER_PORT, "14580"));
 
         Log.i(TAG, "AprsIs RX gate: " + _isTxGateEnabled + ", TX gate: " + _isTxGateEnabled + ", server: " + _server);
 
@@ -329,7 +331,7 @@ public class AprsIs implements Protocol, Runnable {
     private TcpIp runConnect() {
         Socket socket = new Socket();
         try {
-            socket.connect(new InetSocketAddress(_server, APRSIS_DEFAULT_PORT));
+            socket.connect(new InetSocketAddress(_server, _defaultPort));
             TcpIp tcpIp = new TcpIp(socket, "aprsis");
             String loginCmd = getLoginCommand();
             Log.i(TAG, "Login command " + loginCmd);
diff --git a/codec2talkie/src/main/java/com/radio/codec2talkie/settings/PreferenceKeys.java b/codec2talkie/src/main/java/com/radio/codec2talkie/settings/PreferenceKeys.java
index 5e0312d..57e4ab2 100644
--- a/codec2talkie/src/main/java/com/radio/codec2talkie/settings/PreferenceKeys.java
+++ b/codec2talkie/src/main/java/com/radio/codec2talkie/settings/PreferenceKeys.java
@@ -101,6 +101,7 @@ public final class PreferenceKeys {
     public static String APRS_IS_ENABLE="aprs_is_enable";
     public static String APRS_IS_CODE = "aprs_is_code";
     public static String APRS_IS_TCPIP_SERVER = "aprs_is_tcpip_server";
+    public static String APRS_IS_TCPIP_SERVER_PORT = "aprs_is_tcpip_server_port";
     public static String APRS_IS_ENABLE_RX_GATE = "aprs_is_enable_rx_gate";
     public static String APRS_IS_ENABLE_TX_GATE = "aprs_is_enable_tx_gate";
     public static String APRS_IS_ENABLE_SELF = "aprs_is_enable_self";
diff --git a/codec2talkie/src/main/java/com/radio/codec2talkie/settings/SettingsActivity.java b/codec2talkie/src/main/java/com/radio/codec2talkie/settings/SettingsActivity.java
index 4063f05..2f80adc 100644
--- a/codec2talkie/src/main/java/com/radio/codec2talkie/settings/SettingsActivity.java
+++ b/codec2talkie/src/main/java/com/radio/codec2talkie/settings/SettingsActivity.java
@@ -38,7 +38,8 @@ public class SettingsActivity extends AppCompatActivity
             "ports_tcp_ip_retry_count",
             "ports_tcp_ip_retry_delay",
             "ports_sound_modem_preamble",
-            "ports_sound_modem_ptt_off_delay_ms"
+            "ports_sound_modem_ptt_off_delay_ms",
+            "aprs_is_tcpip_server_port"
     };
 
     private static final String[] _signedDecimalSettings = {
diff --git a/codec2talkie/src/main/res/values/strings.xml b/codec2talkie/src/main/res/values/strings.xml
index 5bcaca3..b464838 100644
--- a/codec2talkie/src/main/res/values/strings.xml
+++ b/codec2talkie/src/main/res/values/strings.xml
@@ -338,7 +338,9 @@
     <string name="aprs_is_settings_title">Internet APRS-IS</string>
     <string name="aprs_is_settings_summary">Configure internet APRS-IS server connectivity</string>
     <string name="aprs_is_tcpip_server_title">Server</string>
-    <string name="aprs_is_tcpip_server_summary">APRS-IS TCP server (port 14580) to connect</string>
+    <string name="aprs_is_tcpip_server_summary">APRS-IS TCP server to connect</string>
+    <string name="aprs_is_tcpip_server_port_title">Server port</string>
+    <string name="aprs_is_tcpip_server_port_summary">APRS-IS TCP server port to use</string>
     <string name="aprs_is_enable_rx_gate_title">Enable APRS-IS RX gate</string>
     <string name="aprs_is_enable_tx_gate_title">Enable APRS-IS TX gate</string>
     <string name="aprs_is_enable_rx_gate_summary">Radio packets will be forwarded to APRS-IS</string>
diff --git a/codec2talkie/src/main/res/xml/preferences_aprs_is.xml b/codec2talkie/src/main/res/xml/preferences_aprs_is.xml
index 5dffe4e..d6131eb 100644
--- a/codec2talkie/src/main/res/xml/preferences_aprs_is.xml
+++ b/codec2talkie/src/main/res/xml/preferences_aprs_is.xml
@@ -18,6 +18,13 @@
             app:defaultValue="euro.aprs2.net">
         </EditTextPreference>
 
+        <EditTextPreference
+            app:key="aprs_is_tcpip_server_port"
+            app:title="@string/aprs_is_tcpip_server_port_title"
+            app:summary="@string/aprs_is_tcpip_server_port_summary"
+            app:defaultValue="14580">
+        </EditTextPreference>
+
         <SwitchPreference
             app:key="aprs_is_enable_rx_gate"
             app:title="@string/aprs_is_enable_rx_gate_title"