diff --git a/config b/config
index b5917680..5c3ca9eb 100755
--- a/config
+++ b/config
@@ -1424,7 +1424,7 @@ elif [ "$1" = "-g" ]; then
 	
 	if [ "$rset" = "y" ] || [ "$rset" = "yes" ]  ; then
 
-		echo "Resetting and shutting down."
+		echo "Resetting"
 
 		echo "AMSAT 0 0 0 no 3 434.9 435 no 0 0" > /home/pi/CubeSatSim/sim.cfg
 	
@@ -1442,6 +1442,8 @@ elif [ "$1" = "-g" ]; then
 
 		sudo rm /home/pi/CubeSatSim/failure_mode.txt > /dev/null 2>&1
 
+		sudo rm /home/pi/CubeSatSim/transmit_dtmf > /dev/null 2>&1
+
 		sudo systemctl stop cubesatsim
 		sudo systemctl stop transmit
 		sudo systemctl stop command
@@ -1451,11 +1453,25 @@ elif [ "$1" = "-g" ]; then
 		sudo journalctl --rotate
 		sudo journalctl --vacuum-time=1s
 
-		rm -rf ~/.config/chromium/Singleton*
+		rm -rf ~/.config/chromium/Singleton* > /dev/null 2>&1
 
 		cat /dev/null > ~/.bash_history && history -c
 
-		sudo shutdown now
+		sudo systemctl stop pacsatsim &>/dev/null
+		sudo rm -r /home/pi/PacSat > /dev/null 2>&1
+
+		sudo rm -r /home/pi/PacSatGround > /dev/null 2>&1
+
+		sudo rm -r /home/pi/PacSatGroundLoop > /dev/null 2>&1
+
+		if [ "$noreboot" = "0" ] ; then 
+			echo "Shutting down."
+			sudo shutdown now
+		else
+			echo
+			echo "Shutdown or reboot to complete the operation."
+			echo
+		fi
 	
 #		reboot=1
 	else
@@ -1812,16 +1828,23 @@ elif [ "$1" = "-G" ]; then
 
 	reboot=1
 	sudo echo "p" > /home/pi/CubeSatSim/.mode	
-#	if [ "$1" == "f" ] || [ "$1" == "b" ]  || [ "$1" == "e" ] ; then
-#		FILE=/home/pi/CubeSatSim/battery_saver
-#		if [ -f "$FILE" ]; then
-#			restart=1
-#		else 
-#			reboot=1
-#		fi	
-#	else
-#		restart=1
-#	fi	
+
+	value=`cat /home/pi/CubeSatSim/sim.cfg`
+	echo "$value" > /dev/null
+	set -- $value
+	
+	if [ "${7}" != "434.9" ] && [ "${7}" != "434.900" ] ; then
+		echo "The default transmit frequency of 434.9 MHz is NOT set."
+		echo
+		echo "Do you want to change the transmit frequency (for example to 434.9 MHz)?"
+
+		read input
+		echo
+
+		if [ "$input" = "y" ] || [ "$input" = "yes" ]  ; then
+			/home/pi/CubeSatSim/config -F n
+		fi
+	fi
 
 elif [ "$1" = "-I" ]; then
 
@@ -1855,18 +1878,6 @@ elif [ "$1" = "-I" ]; then
 		fi
 	fi
 
-
-#	if [ "$1" == "f" ] || [ "$1" == "b" ]  || [ "$1" == "e" ] ; then
-#		FILE=/home/pi/CubeSatSim/battery_saver
-#		if [ -f "$FILE" ]; then
-#			restart=1
-#		else 
-#			reboot=1
-#		fi	
-#	else
-#		restart=1
-#	fi	
-
 elif [ "$1" = "-k" ]; then
 
 	echo
diff --git a/groundstation/aprs-cubesatsim.sh b/groundstation/aprs-cubesatsim.sh
index f71a70e3..dfc30e03 100755
--- a/groundstation/aprs-cubesatsim.sh
+++ b/groundstation/aprs-cubesatsim.sh
@@ -9,6 +9,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_fm &>/dev/null
 
 sudo killall -9 direwolf &>/dev/null
diff --git a/groundstation/aprs.sh b/groundstation/aprs.sh
index 427c36cb..358d8bf6 100755
--- a/groundstation/aprs.sh
+++ b/groundstation/aprs.sh
@@ -9,6 +9,8 @@ sudo systemctl stop rtl_tcp &>/dev/null
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 sdrpp &>/dev/null
 
 sudo killall -9 rtl_fm &>/dev/null
diff --git a/groundstation/autostart/chromium.desktop b/groundstation/autostart/chromium.desktop
index 5fd6bef0..f6e74ffd 100644
--- a/groundstation/autostart/chromium.desktop
+++ b/groundstation/autostart/chromium.desktop
@@ -1,5 +1,5 @@
 
 [Desktop Entry]
 Type=Application
-Name=Chromium with WebSDR
-Exec=chromium-browser --check-for-update-interval=1 --simulate-critical-update  --noerrdialogs --disable-infobars --app=http://localhost:8073
+Name=Browser with WebSDR
+Exec=x-www-browser http://localhost:8073/
diff --git a/groundstation/chromium.desktop.autostart b/groundstation/chromium.desktop.autostart
index da2a350e..76d785f9 100644
--- a/groundstation/chromium.desktop.autostart
+++ b/groundstation/chromium.desktop.autostart
@@ -1,4 +1,4 @@
 [Desktop Entry]
 Type=Application
 Name=Chromium with WebSDR
-Exec=chromium-browser --check-for-update-interval=1 --simulate-critical-update --noerrdialogs --disable-infobars http://127.0.0.1:8073
+Exec=x-www-browser http://127.0.0.1:8073
diff --git a/groundstation/cubicsdr-packet.sh b/groundstation/cubicsdr-packet.sh
index c5f0a1e8..a14fa706 100755
--- a/groundstation/cubicsdr-packet.sh
+++ b/groundstation/cubicsdr-packet.sh
@@ -8,6 +8,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_fm &>/dev/null
 
 sudo killall -9 direwolf &>/dev/null
diff --git a/groundstation/cubicsdr.sh b/groundstation/cubicsdr.sh
index 3b125dc6..0db3a88e 100755
--- a/groundstation/cubicsdr.sh
+++ b/groundstation/cubicsdr.sh
@@ -17,6 +17,8 @@ sudo systemctl stop rtl_tcp &>/dev/null
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 sdrpp &>/dev/null
 
 sudo killall -9 rtl_fm &>/dev/null
diff --git a/groundstation/fctelem.sh b/groundstation/fctelem.sh
index 0b4c92a3..b61b9a4e 100755
--- a/groundstation/fctelem.sh
+++ b/groundstation/fctelem.sh
@@ -5,7 +5,7 @@ echo "Script to run FUNcube CubeSatSim Telemetry"
 
 echo 
 
-echo "The Chromium browser will load in a few seconds with fctelem."
+echo "The browser will load in a few seconds with fctelem."
 
 echo "You can also use another web browser if you are on the same network as your Pi."
 
@@ -34,6 +34,8 @@ sudo killall -9 python3 &>/dev/null
 
 #pkill -o chromium &>/dev/null
 
+#pkill -o firefox &>/dev/null
+
 #sudo killall -9 rtl_tcp &>/dev/null
 
 #sudo killall -9 CubicSDR &>/dev/null
@@ -174,7 +176,8 @@ cp /home/pi/CubeSatSim/sstv/sstv_image_1_320_x_256.jpg ./image_file.jpeg
 
 python3 -m http.server 8002 &
 
-setsid chromium-browser --check-for-update-interval=1 --simulate-critical-update  --noerrdialogs --disable-infobars http://127.0.0.1:8002 &>/dev/null & 
+#setsid chromium-browser --check-for-update-interval=1 --simulate-critical-update  --noerrdialogs --disable-infobars http://127.0.0.1:8002 &>/dev/null & 
+setsid x-www-browser http://127.0.0.1:8002/
 
 cd /home/pi/fctelem
 
diff --git a/groundstation/fox.sh b/groundstation/fox.sh
index 27050f9a..0065548e 100755
--- a/groundstation/fox.sh
+++ b/groundstation/fox.sh
@@ -11,6 +11,8 @@ sudo systemctl stop rtl_tcp &>/dev/null
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 sdrpp &>/dev/null
 
 sudo killall -9 rtl_tcp &>/dev/null
diff --git a/groundstation/packet.sh b/groundstation/packet.sh
index c8fdef00..627d04da 100755
--- a/groundstation/packet.sh
+++ b/groundstation/packet.sh
@@ -12,6 +12,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_fm &>/dev/null
 
 sudo killall -9 sdrpp &>/dev/null
diff --git a/groundstation/pacsat.sh b/groundstation/pacsat.sh
index 85db5762..e61d3fc1 100755
--- a/groundstation/pacsat.sh
+++ b/groundstation/pacsat.sh
@@ -36,6 +36,15 @@ else
   soundcard=0
 fi  
 
+gpio -g mode 12 up
+  if [[ $(gpio -g read 12 | grep 0) ]] ; then
+  echo "LPF is present"
+  lpf=1
+else
+  echo "LPF not present"
+  lpf=0
+fi  
+
 gpio -g mode 7 up
 if [[ $(gpio -g read 7 | grep 0) ]] ; then
   echo "TXC is present"
@@ -44,7 +53,7 @@ else
   echo "TXC not present"
   txc=0
 
-  timeout 1 rtl_test &> out.txt
+  timeout 1 timeout 1 rtl_test &> out.txt
   if [[ $(grep "No supported" out.txt) ]] ; then
     echo "No RTL-SDR detected"
     rtl=0
@@ -155,6 +164,7 @@ set -- $value
 callsign="$1"
 txfrequency="$7e3"
 rxfrequency="$8e3"
+frequency="$8e6"
 
 echo -n "Callsign is "
 echo $callsign
@@ -186,6 +196,8 @@ sudo systemctl stop rtl_tcp >/dev/null 2>&1
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_fm &>/dev/null
 
 #sudo killall -9 direwolf &>/dev/null
@@ -211,6 +223,20 @@ sudo killall -9 zenity &>/dev/null
 
 sudo usermod -a -G gpio pi
 
+if [ "$lpf" = "0" ] && [ "$txc" = "0" ] ; then
+  loopback=1
+
+  value=`aplay -l | grep "Loopback"`
+  echo "$value" > /dev/null
+  set -- $value
+  
+  #rtl_fm -M fm -f 144.39M -s 48k | aplay -D hw:${2:0:1},0,0 -r 48000 -t raw -f S16_LE -c 1
+  rtl_fm -M fm -f $frequency -s 48k | tee >(aplay -D hw:${2:0:1},0,0 -r 48000 -t raw -f S16_LE -c 1) | aplay -r 48000 -t raw -f S16_LE -c 1
+  
+  rtl_fm -M fm -f $frequency -s 48k | aplay -D hw:${2:0:1},0,0 -r 48000 -t raw -f S16_LE -c 1 &
+
+fi
+
 if [ "$loopback" = "1" ] ; then
 
   echo "Using Audio Loopback"
diff --git a/groundstation/rtl-tcp-d.sh b/groundstation/rtl-tcp-d.sh
index b19539b7..2bda312a 100755
--- a/groundstation/rtl-tcp-d.sh
+++ b/groundstation/rtl-tcp-d.sh
@@ -23,6 +23,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 java &>/dev/null
 
 sudo killall -9 rtl_fm &>/dev/null
diff --git a/groundstation/rtl-tcp.sh b/groundstation/rtl-tcp.sh
index 3d49d11d..3260b865 100755
--- a/groundstation/rtl-tcp.sh
+++ b/groundstation/rtl-tcp.sh
@@ -29,6 +29,8 @@ sleep 2
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo systemctl stop rtl_tcp &>/dev/null
 
 sudo killall -9 sdrpp &>/dev/null
diff --git a/groundstation/sdr.sh b/groundstation/sdr.sh
index 11298cd9..b4c5504c 100755
--- a/groundstation/sdr.sh
+++ b/groundstation/sdr.sh
@@ -5,7 +5,7 @@ echo "Script to run Web SDR for ARISS Radio Pi"
 
 echo 
 
-echo "The Chromium browser will load in a few seconds with OpenWebRX."
+echo "The browser will load in a few seconds with OpenWebRX."
 
 echo "You can also use another web browser if you are on the same network as your Pi."
 
@@ -32,6 +32,8 @@ sudo killall -9 rtl_fm &>/dev/null
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_tcp &>/dev/null
 
 sudo killall -9 CubicSDR &>/dev/null
@@ -59,7 +61,8 @@ sudo systemctl restart openwebrx
 
 sleep 10
 
-setsid chromium-browser --password-store=basic --check-for-update-interval=1 --simulate-critical-update  --noerrdialogs --disable-infobars --app=http://localhost:8073 &>/dev/null & 
+#setsid chromium-browser --password-store=basic --check-for-update-interval=1 --simulate-critical-update  --noerrdialogs --disable-infobars --app=http://localhost:8073 &>/dev/null & 
+setsid x-www-browser http://localhost:8073/
 
 sleep 10
 
diff --git a/groundstation/sdrpp.sh b/groundstation/sdrpp.sh
index 2dd97fd1..e8f83e3e 100755
--- a/groundstation/sdrpp.sh
+++ b/groundstation/sdrpp.sh
@@ -15,6 +15,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_fm &>/dev/null
 
 sudo killall -9 direwolf &>/dev/null
diff --git a/groundstation/sstv_decode.sh b/groundstation/sstv_decode.sh
index b539d2b0..7c3f64aa 100755
--- a/groundstation/sstv_decode.sh
+++ b/groundstation/sstv_decode.sh
@@ -15,6 +15,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_tcp &>/dev/null
 
 sudo killall -9 java &>/dev/null
diff --git a/groundstation/sstv_decode_iss.sh b/groundstation/sstv_decode_iss.sh
index c72ee286..46e64498 100755
--- a/groundstation/sstv_decode_iss.sh
+++ b/groundstation/sstv_decode_iss.sh
@@ -21,6 +21,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 qsstv &>/dev/null
 
 sudo killall -9 rtl_tcp &>/dev/null
diff --git a/groundstation/sstv_decode_prompt.sh b/groundstation/sstv_decode_prompt.sh
index 5a398622..79c794c2 100755
--- a/groundstation/sstv_decode_prompt.sh
+++ b/groundstation/sstv_decode_prompt.sh
@@ -22,6 +22,8 @@ sudo systemctl stop rtl_tcp  &>/dev/null
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 rtl_tcp &>/dev/null
 
 sudo killall -9 java &>/dev/null
diff --git a/groundstation/sstv_decode_sim.sh b/groundstation/sstv_decode_sim.sh
index 3b72c7a4..f4451d30 100755
--- a/groundstation/sstv_decode_sim.sh
+++ b/groundstation/sstv_decode_sim.sh
@@ -21,6 +21,8 @@ sudo systemctl stop rtl_tcp
 
 pkill -o chromium &>/dev/null
 
+pkill -o firefox &>/dev/null
+
 sudo killall -9 qsstv &>/dev/null
 
 sudo killall -9 rtl_tcp &>/dev/null