FX-4CR - Replaced audio setings for the FX-4CR to use the new audio script approach.

overlay/opt/emcomm-tools/conf/radios.d/audio/bg2fx-fx4cr.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+#
+# Author  : Gaston Gonzalez
+# Date    : 13 October 2025
+# Purpose : Audio settings specific to the FX-4CR
+#
+# Preconditions
+# 1. Supported audio interface is connected and properly detected
+#
+# Postconditions
+# 1. ALSA settings set on ET audio device
+
+usage() {
+  echo "usage: $(basename $0) <ET audio card> <ET device name>"
+}
+
+if [[ $# -ne 2 ]]; then
+  usage
+  exit 1
+fi
+
+AUDIO_CARD=$1
+ET_DEVICE_NAME=$2
+
+# Unmute the PCM and set the volume to 21% to get the full output power. This value is
+# dependent on the settings defined for the FX-4CR in the et-radio notes. 
+amixer -q -c ${AUDIO_CARD} sset 'PCM' 31% unmute
+
+# Set "L/R Capture" to 55%. Adjust if you can't decode received audio.
+amixer -q -c ${AUDIO_CARD} sset 'Mic' 67% unmute
+
+# Disable Auto Gain Control
+amixer -q -c ${AUDIO_CARD} sset 'Auto Gain Control' mute
+
+et-log "Applied amixer settings for audio card ${AUDIO_CARD} on device ${ET_DEVICE_NAME}"