diff --git a/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/Kiss.java b/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/Kiss.java
index 1196ada..a231802 100644
--- a/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/Kiss.java
+++ b/codec2talkie/src/main/java/com/radio/codec2talkie/protocol/Kiss.java
@@ -172,6 +172,7 @@ public class Kiss implements Protocol {
         */
         String freq = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_FREQUENCY, "433775000");
         String freqTx = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_FREQUENCY_TX, "433775000");
+        if (_sharedPreferences.getBoolean(PreferenceKeys.KISS_EXTENSIONS_RADIO_SPLIT_FREQ, false)) freqTx = freq;
         String modType = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_MOD, "0");
         String bw = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_BANDWIDTH, "125000");
         String sf = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_SF, "7");
@@ -181,7 +182,7 @@ public class Kiss implements Protocol {
         byte crc = (byte)(_sharedPreferences.getBoolean(PreferenceKeys.KISS_EXTENSIONS_RADIO_CRC, true) ? 1 : 0);
         String fskBitRate = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_FSK_BIT_RATE, "4800");
         String fskFreqDev = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_FSK_FREQ_DEV, "1200");
-        String fskRxBw = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_FSK_FREQ_DEV, "9700");
+        String fskRxBw = _sharedPreferences.getString(PreferenceKeys.KISS_EXTENSIONS_RADIO_FSK_RX_BW, "9700");
 
         ByteBuffer rawBuffer  = ByteBuffer.allocate(KISS_RADIO_CONTROL_COMMAND_SIZE);
 
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 e8c2c45..f2bf3cf 100644
--- a/codec2talkie/src/main/java/com/radio/codec2talkie/settings/PreferenceKeys.java
+++ b/codec2talkie/src/main/java/com/radio/codec2talkie/settings/PreferenceKeys.java
@@ -48,6 +48,7 @@ public final class PreferenceKeys {
 
     public static String KISS_EXTENSIONS_ENABLED = "kiss_extensions_enable";
     public static String KISS_EXTENSIONS_RADIO_MOD = "kiss_extension_radio_mod";
+    public static String KISS_EXTENSIONS_RADIO_SPLIT_FREQ = "kiss_extension_radio_split_freq";
     public static String KISS_EXTENSIONS_RADIO_FREQUENCY = "kiss_extension_radio_frequency";
     public static String KISS_EXTENSIONS_RADIO_FREQUENCY_TX = "kiss_extension_radio_frequency_tx";
     public static String KISS_EXTENSIONS_RADIO_BANDWIDTH = "kiss_extension_radio_bandwidth";
diff --git a/codec2talkie/src/main/res/values/arrays.xml b/codec2talkie/src/main/res/values/arrays.xml
index e4cd5e7..358e655 100644
--- a/codec2talkie/src/main/res/values/arrays.xml
+++ b/codec2talkie/src/main/res/values/arrays.xml
@@ -275,7 +275,76 @@
         <item>/y</item>
     </string-array>
 
+    <string-array name="radio_mod_entries">
+        <item>LoRa</item>
+        <item>FSK</item>
+    </string-array>
+
+    <string-array name="radio_mod_values">
+        <item>0</item>
+        <item>1</item>
+    </string-array>
+
+    <string-array name="fsk_rx_bw_entries">
+        <item>4800</item>
+        <item>5800</item>
+        <item>7300</item>
+        <item>9700</item>
+        <item>11700</item>
+        <item>14600</item>
+        <item>19500</item>
+        <item>23400</item>
+        <item>29300</item>
+        <item>39000</item>
+        <item>46900</item>
+        <item>58600</item>
+        <item>78200</item>
+        <item>93800</item>
+        <item>117300</item>
+        <item>156200</item>
+        <item>187200</item>
+        <item>234300</item>
+        <item>312000</item>
+        <item>373000</item>
+        <item>467000</item>
+    </string-array>
+
+    <string-array name="fsk_rx_bw_values">
+        <item>4800</item>
+        <item>5800</item>
+        <item>7300</item>
+        <item>9700</item>
+        <item>11700</item>
+        <item>14600</item>
+        <item>19500</item>
+        <item>23400</item>
+        <item>29300</item>
+        <item>39000</item>
+        <item>46900</item>
+        <item>58600</item>
+        <item>78200</item>
+        <item>93800</item>
+        <item>117300</item>
+        <item>156200</item>
+        <item>187200</item>
+        <item>234300</item>
+        <item>312000</item>
+        <item>373000</item>
+        <item>467000</item>
+    </string-array>
+
     <string-array name="lora_power_entries">
+        <item>-9 dBm</item>
+        <item>-8 dBm</item>
+        <item>-7 dBm</item>
+        <item>-6 dBm</item>
+        <item>-5 dBm</item>
+        <item>-4 dBm</item>
+        <item>-3 dBm</item>
+        <item>-2 dBm</item>
+        <item>-1 dBm</item>
+        <item>0 dBm</item>
+        <item>1 dBm</item>
         <item>2 dBm</item>
         <item>3 dBm</item>
         <item>4 dBm</item>
@@ -300,6 +369,17 @@
     </string-array>
 
     <string-array name="lora_power_values">
+        <item>-9</item>
+        <item>-8</item>
+        <item>-7</item>
+        <item>-6</item>
+        <item>-5</item>
+        <item>-4</item>
+        <item>-3</item>
+        <item>-2</item>
+        <item>-1</item>
+        <item>0</item>
+        <item>1</item>
         <item>2</item>
         <item>3</item>
         <item>4</item>
diff --git a/codec2talkie/src/main/res/values/strings.xml b/codec2talkie/src/main/res/values/strings.xml
index b464838..3ada0c4 100644
--- a/codec2talkie/src/main/res/values/strings.xml
+++ b/codec2talkie/src/main/res/values/strings.xml
@@ -54,11 +54,24 @@
     <string name="kiss_extensions_enable_title">Enable extensions</string>
     <string name="kiss_extensions_enable_summary">Enable radio control and signal level reports</string>
 
+    <string name="kiss_extensions_radio_mod_title">Select radio modulation type</string>
+
     <string name="kiss_extensions_radio_control_title">Set radio parameters</string>
     <string name="kiss_extensions_radio_control_summary">Set frequency, bandwidth and other radio parameters</string>
 
+    <string name="kiss_extensions_radio_category_lora_title">Set LoRa modulation parameters</string>
+    <string name="kiss_extensions_radio_category_fsk_title">Set FSK modulation parameters</string>
+
+    <string name="kiss_extensions_radio_category_other_title">Modem control</string>
+
+    <string name="kiss_extension_radio_split_freq_title">Split frequency operation</string>
+    <string name="kiss_extension_radio_split_freq_summary">Use separate frequencies for RX and TX</string>
+
     <string name="kiss_extensions_radio_frequency_title">Frequency (Hz)</string>
-    <string name="kiss_extensions_radio_frequency_summary">Set radio frequency</string>
+    <string name="kiss_extensions_radio_frequency_summary">Set radio frequency for RX/TX or RX frequency when split operation is enabled</string>
+
+    <string name="kiss_extensions_radio_frequency_title_tx">Frequency TX (Hz)</string>
+    <string name="kiss_extensions_radio_frequency_summary_tx">Set transmit radio frequency</string>
 
     <string name="kiss_extensions_radio_bandwidth_title">Bandwidth (Hz)</string>
     <string name="kiss_extensions_radio_bandwidth_summary">Set radio bandwidth</string>
@@ -78,6 +91,14 @@
     <string name="kiss_extensions_radio_crc_title">Enable CRC check</string>
     <string name="kiss_extensions_radio_crc_summary">Enable packet CRC check</string>
 
+    <string name="kiss_extension_radio_fsk_bit_rate_title">Bit rate (600–300000bps)</string>
+    <string name="kiss_extension_radio_fsk_bit_rate_summary">Set bit rate</string>
+
+    <string name="kiss_extension_radio_fsk_freq_dev_title">Set freq deviation (600–200000Hz)</string>
+    <string name="kiss_extension_radio_fsk_freq_dev_summary">Set freq deviation</string>
+
+    <string name="kiss_extension_radio_fsk_rx_bw_title">Set receive bandwidth (Hz)</string>
+
     <string name="app_volume_ptt_title">Use volume keys for PTT</string>
     <string name="app_volume_ptt_summary">Volume up/down keys will be used for PTT</string>
 
diff --git a/codec2talkie/src/main/res/xml/preferences_radio.xml b/codec2talkie/src/main/res/xml/preferences_radio.xml
index 6ed138f..956fa42 100644
--- a/codec2talkie/src/main/res/xml/preferences_radio.xml
+++ b/codec2talkie/src/main/res/xml/preferences_radio.xml
@@ -13,14 +13,21 @@
             app:defaultValue="433775000">
         </EditTextPreference>
 
-        <ListPreference
-            app:key="kiss_extension_radio_bandwidth"
-            app:title="@string/kiss_extensions_radio_bandwidth_title"
-            app:entries="@array/lora_bandwidths"
-            app:entryValues="@array/lora_bandwidths"
-            app:defaultValue="125000"
-            app:summary="%s">
-        </ListPreference>
+        <SwitchPreference
+            app:key="kiss_extension_radio_split_freq"
+            app:title="@string/kiss_extension_radio_split_freq_title"
+            app:summary="@string/kiss_extension_radio_split_freq_summary"
+            app:defaultValue="false">
+        </SwitchPreference>
+
+        <EditTextPreference
+            app:key="kiss_extension_radio_frequency_tx"
+            app:title="@string/kiss_extensions_radio_frequency_title_tx"
+            app:useSimpleSummaryProvider="true"
+            app:summary="@string/kiss_extensions_radio_frequency_summary_tx"
+            app:dependency="kiss_extension_radio_split_freq"
+            app:defaultValue="433775000">
+        </EditTextPreference>
 
         <ListPreference
             app:key="kiss_extension_radio_power"
@@ -32,43 +39,104 @@
         </ListPreference>
 
         <ListPreference
-            app:key="kiss_extension_radio_sf"
-            app:title="@string/kiss_extensions_radio_sf_title"
+            app:key="kiss_extension_radio_mod"
+            app:title="@string/kiss_extensions_radio_mod_title"
+            app:entries="@array/radio_mod_entries"
+            app:entryValues="@array/radio_mod_values"
             app:summary="%s"
-            app:entries="@array/lora_spreading_factors"
-            app:entryValues="@array/lora_spreading_factors"
-            app:defaultValue="7">
+            app:defaultValue="0">
         </ListPreference>
 
-        <ListPreference
-            app:key="kiss_extension_radio_cr"
-            app:title="@string/kiss_extensions_radio_cr_title"
-            app:summary="%s"
-            app:entries="@array/lora_coding_rates"
-            app:entryValues="@array/lora_coding_rates"
-            app:defaultValue="6">
-        </ListPreference>
+        <PreferenceCategory
+            app:key="kiss_extensions_radio_category_lora"
+            app:title="@string/kiss_extensions_radio_category_lora_title">
 
-        <EditTextPreference
-            app:key="kiss_extension_radio_sync"
-            app:title="@string/kiss_extensions_radio_sync_title"
-            app:summary="@string/kiss_extensions_radio_sync_summary"
-            app:useSimpleSummaryProvider="true"
-            app:defaultValue="34">
-        </EditTextPreference>
+            <ListPreference
+                app:key="kiss_extension_radio_bandwidth"
+                app:title="@string/kiss_extensions_radio_bandwidth_title"
+                app:entries="@array/lora_bandwidths"
+                app:entryValues="@array/lora_bandwidths"
+                app:defaultValue="125000"
+                app:summary="%s">
+            </ListPreference>
 
-        <CheckBoxPreference
-            app:key="kiss_extension_radio_crc"
-            app:title="@string/kiss_extensions_radio_crc_title"
-            app:summary="@string/kiss_extensions_radio_crc_summary"
-            app:defaultValue="true">
-        </CheckBoxPreference>
+            <ListPreference
+                app:key="kiss_extension_radio_sf"
+                app:title="@string/kiss_extensions_radio_sf_title"
+                app:summary="%s"
+                app:entries="@array/lora_spreading_factors"
+                app:entryValues="@array/lora_spreading_factors"
+                app:defaultValue="7">
+            </ListPreference>
 
-        <Preference
-            app:key="kiss_extension_reboot"
-            app:title="@string/kiss_extension_reboot_title"
-            app:summary="@string/kiss_extension_reboot_summary">
-        </Preference>
+            <ListPreference
+                app:key="kiss_extension_radio_cr"
+                app:title="@string/kiss_extensions_radio_cr_title"
+                app:summary="%s"
+                app:entries="@array/lora_coding_rates"
+                app:entryValues="@array/lora_coding_rates"
+                app:defaultValue="6">
+            </ListPreference>
+
+            <EditTextPreference
+                app:key="kiss_extension_radio_sync"
+                app:title="@string/kiss_extensions_radio_sync_title"
+                app:summary="@string/kiss_extensions_radio_sync_summary"
+                app:useSimpleSummaryProvider="true"
+                app:defaultValue="34">
+            </EditTextPreference>
+
+            <CheckBoxPreference
+                app:key="kiss_extension_radio_crc"
+                app:title="@string/kiss_extensions_radio_crc_title"
+                app:summary="@string/kiss_extensions_radio_crc_summary"
+                app:defaultValue="true">
+            </CheckBoxPreference>
+
+        </PreferenceCategory>
+
+        <PreferenceCategory
+            app:key="kiss_extensions_radio_category_fsk"
+            app:title="@string/kiss_extensions_radio_category_fsk_title">
+
+            <EditTextPreference
+                app:key="kiss_extension_radio_fsk_bit_rate"
+                app:title="@string/kiss_extension_radio_fsk_bit_rate_title"
+                app:useSimpleSummaryProvider="true"
+                app:summary="@string/kiss_extension_radio_fsk_bit_rate_summary"
+                app:defaultValue="4800">
+            </EditTextPreference>
+
+            <EditTextPreference
+                app:key="kiss_extension_radio_fsk_freq_dev"
+                app:title="@string/kiss_extension_radio_fsk_freq_dev_title"
+                app:useSimpleSummaryProvider="true"
+                app:summary="@string/kiss_extension_radio_fsk_freq_dev_summary"
+                app:defaultValue="1200">
+            </EditTextPreference>
+
+            <ListPreference
+                app:key="kiss_extension_radio_fsk_rx_bw"
+                app:title="@string/kiss_extension_radio_fsk_rx_bw_title"
+                app:entries="@array/fsk_rx_bw_entries"
+                app:entryValues="@array/fsk_rx_bw_values"
+                app:summary="%s"
+                app:defaultValue="9700">
+            </ListPreference>
+
+        </PreferenceCategory>
+
+        <PreferenceCategory
+            app:key="kiss_extensions_radio_category_other"
+            app:title="@string/kiss_extensions_radio_category_other_title">
+
+            <Preference
+                app:key="kiss_extension_reboot"
+                app:title="@string/kiss_extension_reboot_title"
+                app:summary="@string/kiss_extension_reboot_summary">
+            </Preference>
+
+        </PreferenceCategory>
 
     </PreferenceCategory>
 </PreferenceScreen>
\ No newline at end of file