diff --git a/overlay/etc/udev/rules.d/89-et-xiegu-x6100.rules b/overlay/etc/udev/rules.d/89-et-xiegu-x6100.rules
new file mode 100644
index 0000000..319f137
--- /dev/null
+++ b/overlay/etc/udev/rules.d/89-et-xiegu-x6100.rules
@@ -0,0 +1,26 @@
+# Author   : Gaston Gonzalez
+# Date     : 5 October 2025
+# Purpose  : udev rules for the Xiegu X6100
+#
+# Preconditions:
+# 1. Xiegu X6100 connected via USB cable
+#
+# Postconditions:
+# 1. /dev/et-cat created
+# 2. rigctld is started
+# 3. /dev/et-audio created
+
+SUBSYSTEM=="tty", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="55d2", ENV{ET_DEVICE}=="", \
+    PROGRAM="/opt/emcomm-tools/sbin/udev-tester.sh xiegu-x6100", \
+    ACTION=="add", \
+    ENV{ET_DEVICE}="X6100", ENV{ET_SUBDEVICE}="CAT", GROUP="dialout", MODE="0660", SYMLINK+="et-cat", \
+    RUN+="/usr/bin/systemctl start rigctld"
+
+# This soundcard will collide with the DigiRig, so we need to ensure that this 
+# rule is ordered before it and that we guard the match with the PROGRAM check.
+SUBSYSTEM=="sound", ATTRS{idVendor}=="0d8c", ATTRS{idProduct}=="0012", \
+    PROGRAM="/opt/emcomm-tools/sbin/udev-tester.sh xiegu-x6100", \
+    ACTION=="add", \
+    ENV{ET_DEVICE}="X6100", \
+    ATTR{id}="ET_AUDIO", \
+    ENV{ET_SUBDEVICE}="AUDIO", GROUP="audio", MODE="0660", SYMLINK+="et-audio"
diff --git a/overlay/opt/emcomm-tools/bin/et-audio b/overlay/opt/emcomm-tools/bin/et-audio
index b7a4e05..4aa9062 100755
--- a/overlay/opt/emcomm-tools/bin/et-audio
+++ b/overlay/opt/emcomm-tools/bin/et-audio
@@ -2,7 +2,7 @@
 #
 # Author  : Gaston Gonzalez
 # Date    : 31 October 2024
-# Updated : 26 September 2025
+# Updated : 5 October 2025
 # Purpose : Configures ET audio device with sane defaults
 #
 # Preconditions
@@ -112,6 +112,18 @@ update-config () {
 
            et-log "Applied amixer settings for ${ET_DEVICE_NAME}"
 	   ;;
+         "X6100")
+           # Unmute Speaker a set volume. Adjust if remote station can't decode you.
+           amixer -q -c ${AUDIO_CARD} sset Speaker Playback Switch 42% unmute
+           # Unmute Mic
+           amixer -q -c ${AUDIO_CARD} sset Mic Playback Switch 52% unmute
+           # Set "L/R Capture" to 19. Adjust if you can't decode received audio. 
+           amixer -q -c ${AUDIO_CARD} sset Mic Capture Switch 31% unmute
+           # Disable Auto Gain Control
+           amixer -q -c ${AUDIO_CARD} sset 'Auto Gain Control' mute
+
+           et-log "Applied amixer settings for ${ET_DEVICE_NAME}"
+         ;;
          *)
            et-log "No ALSA configuration specified for this ET_DEVICE."
          ;;
diff --git a/overlay/opt/emcomm-tools/conf/radios.d/xiegu-x6100.json b/overlay/opt/emcomm-tools/conf/radios.d/xiegu-x6100.json
new file mode 100644
index 0000000..a90ee06
--- /dev/null
+++ b/overlay/opt/emcomm-tools/conf/radios.d/xiegu-x6100.json
@@ -0,0 +1,18 @@
+{
+  "id": "xiegu-x6100",
+  "vendor": "Xiegu",
+  "model": "X6100",
+  "rigctrl": {
+    "id": "3087",
+    "baud": "19200",
+    "conf": "data_bits=8,stop_bits=1",
+    "ptt": "RIG"
+  },
+  "notes": [
+    "Plug USB-C cable into the DEV port",
+    "Set mode to U-DIG"
+  ],
+  "fieldNotes": [
+    "Tested with firmware version: 1.1.6 (2023/03/07)"
+  ]
+}
diff --git a/overlay/opt/emcomm-tools/sbin/udev-tester.sh b/overlay/opt/emcomm-tools/sbin/udev-tester.sh
index 02fb7f9..5959aab 100755
--- a/overlay/opt/emcomm-tools/sbin/udev-tester.sh
+++ b/overlay/opt/emcomm-tools/sbin/udev-tester.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # Author  : Gaston Gonzalez
 # Date    : 11 October 2024
-# Updated : 13 September 2025
+# Updated : 5 October 2025
 # Purpose : Perform tests that can be used by the udev subsystem to aid
 #           in rule development. This is intended to by used with the PROGRAM
 #           directive inside of a udev rule.
@@ -13,6 +13,20 @@
 ET_HOME=/opt/emcomm-tools
 ACTIVE_RADIO="${ET_HOME}/conf/radios.d/active-radio.json"
 
+# Exit with a 0 exit status if, and only if, the currently selected radio is
+# a Xiegu X6100 
+test_xiegu_x6100() {
+  if [[ -L "${ET_HOME}/conf/radios.d/active-radio.json" ]]; then
+    ID=$(cat "${ET_HOME}/conf/radios.d/active-radio.json" | jq -r .id)
+
+    if [[ "$ID" == "xiegu-x6100" ]]; then
+      exit 0
+    fi
+  fi
+  
+  exit 1
+}
+
 # Exit with a 0 exit status if, and only if, the currently selected radio is
 # a Yaesu FTX-1.
 test_yaesu_ftx1() {
@@ -101,6 +115,9 @@ if [ $# -ne 1 ]; then
 fi
 
 case $1 in
+  xiegu-x6100)
+    test_xiegu_x6100
+  ;;
   yaesu-ftx1)
     test_yaesu_ftx1
   ;;
@@ -112,6 +129,7 @@ case $1 in
   ;;
   digirig-mobile)
     test_digirig_mobile
+  ;;
 esac
 
 exit 1