diff --git a/config b/config
index c4ab7d94..861b0624 100755
--- a/config
+++ b/config
@@ -324,6 +324,32 @@ if [ "$1" = "" ]; then
   		echo "Transmit beacon telemetry is ON"
 	fi
 
+	if [[ $(arecord -l | grep "USB Audio Device") ]] ; then
+	  echo "USB Sound Card detected"
+	  soundcard=1
+	else
+	  echo "No USB Sound Card detected"
+	  soundcard=0
+	fi  
+	
+	gpio -g mode 7 up
+	if [[ $(gpio -g read 7 | grep 0) ]] ; then
+	  echo "FM TXC is present"
+	  txc=1
+	else
+	  echo "FM TXC not present"
+	  txc=0
+	fi  
+	
+	timeout 1 rtl_test &> out.txt
+	if [[ $(grep "No supported" out.txt) ]] ; then
+	  echo "No RTL-SDR detected"
+	  rtl=0
+	else
+	  echo "RTL-SDR detected"
+	  rtl=1
+	fi
+
 	echo
 	echo -e "Current sim.cfg configuration file:"	
 #	echo