diff --git a/config b/config
index 36379864..324a5512 100755
--- a/config
+++ b/config
@@ -355,14 +355,14 @@ if [ "$1" = "" ]; then
 	  txc=0
 	fi  
 	
-	timeout 1 rtl_test &> out.txt
-	if [[ $(grep "No supported" out.txt) ]] ; then
+#	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
+#	  rtl=0
+#	else
+#	  echo "RTL-SDR detected"
+#	  rtl=1
+#	fi
 
 	echo
 	echo -e "Current sim.cfg configuration file:"	
diff --git a/groundstation/auto-tune.py b/groundstation/auto-tune.py
new file mode 100644
index 00000000..b7808902
--- /dev/null
+++ b/groundstation/auto-tune.py
@@ -0,0 +1,93 @@
+from rtlsdr import RtlSdr
+import numpy as np
+import matplotlib.pyplot as plt
+import sys
+
+if __name__ == "__main__":
+	graph = 'n'
+	center_frequency = 434.7e6
+	if (len(sys.argv)) > 0:
+#		print("There are arguments!")
+		center_frequency = float(sys.argv[1]) - 200e3
+		if (center_frequency == 0):
+			center_frequency = 434.7e6
+		if (len(sys.argv)) > 1:
+#			print("There are more arguments")
+			if (sys.argv[2] == 'g') or (sys.argv[2] == '-g'):
+				graph = 'y'  
+        
+	sampling_rate = 1024e3 # 250e3 # Hz
+	duration = 65536/sampling_rate # 1          # seconds
+	
+	try:	
+		sdr = RtlSdr()
+		
+		# configure device
+		sdr.sample_rate = sampling_rate # 250e3 # 2.4e6
+		#center_frequency = 434.8e6
+		sdr.center_freq = center_frequency
+		sdr.gain = 47
+		sdr.direct_sampling = False
+		
+		# signal = sdr.read_samples(64*1024) #256
+		signal = sdr.read_samples(duration*sampling_rate).real #256
+		
+	#	print(f"Center frequency is {center_frequency}")
+		
+		sdr.close()
+		
+		# Compute the FFT
+		fft_result = np.fft.fft(signal)
+		
+		# Calculate the frequencies corresponding to the FFT output
+		n = len(signal)
+		frequencies = np.fft.fftfreq(n, d=1/sampling_rate)
+		
+		# Take the absolute value for amplitude spectrum and consider only the positive frequencies
+		positive_frequencies_indices = np.where(frequencies >= 0)
+		positive_frequencies = frequencies[positive_frequencies_indices]
+		amplitude_spectrum = 2/n * np.abs(fft_result[positive_frequencies_indices]) # Normalize for amplitude
+		
+		if (graph == 'y'):
+		  # Plotting the results
+		  t = np.linspace(0, duration, int(sampling_rate * duration), endpoint=False)
+			
+		  plt.figure(figsize=(12, 6))
+		  
+		  plt.subplot(1, 2, 1)
+		  plt.plot(t, signal)
+		  plt.title('Time Domain Signal')
+		  plt.xlabel('Time (s)')
+		  plt.ylabel('Amplitude')
+		  
+		  plt.subplot(1, 2, 2)
+		  plt.stem(positive_frequencies, amplitude_spectrum, markerfmt=" ", basefmt="-b")
+		  plt.title('Frequency Domain (FFT)')
+		  plt.xlabel('Frequency (Hz)')
+		  plt.ylabel('Amplitude')
+		  plt.grid(True)
+		  
+		  plt.tight_layout()
+		  plt.show()
+		
+		# print(amplitude_spectrum)
+		x = amplitude_spectrum 
+		# print(x)
+		min_value = min(x)
+		max_value = max(x) * 100
+		
+		#freq_min = np.argmax(min_value)
+		# print(np.argmax(x))
+		# print(np.argmax(x)*(150e3 - 10e3)/(9770 - 709))
+		# print(sampling_rate)
+		# print(center_frequency)
+		
+		offset = (np.argmax(x)*(150e3 - 10e3)/(9770 - 709))
+		freq_max = center_frequency + offset + 2000
+	except: # if no RTL-SDR or in use, stop scanning with high max value and center frequency
+		max_value = 100
+		freq_max = center_frequency + 200e3 # should be 434900000
+		
+	print(f" {freq_max:.0f} {max_value:.0f}")
+
+	
diff --git a/groundstation/fctelem.sh b/groundstation/fctelem.sh
index 4beb88a3..0b4c92a3 100755
--- a/groundstation/fctelem.sh
+++ b/groundstation/fctelem.sh
@@ -80,8 +80,9 @@ else
     echo
 fi
 
+autotune=0
 
-frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=180 --title="FUNcube Telem Decoding" --text="Choose the frequency for FUNcube decoding:" --column="kHz" --column="Use" 434900 "CubeSatSim" Other "Choose another frequency")
+frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=220 --title="FUNcube Telem Decoding" --text="Choose the frequency for FUNcube decoding:" --column="kHz" --column="Use" 434900 "CubeSatSim" Auto-tune "CubeSatSim Auto-tune" Other "Choose another frequency")
 
 echo $frequency
 
@@ -96,6 +97,11 @@ if [ "$frequency" = "434900" ]; then
 
 	frequency=434900000
 
+elif [ "$frequency" = "Auto-tune" ]; then
+
+	frequency=434900000
+	autotune=1
+
 elif [ "$frequency" = "Other" ]; then
 
 	echo
@@ -110,6 +116,39 @@ elif [ "$frequency" = "Other" ]; then
 
 fi
 
+if [ "$autotune" = "1" ]; then
+  threshold=1
+  delay=5
+  retries=5
+
+  echo "Starting Auto-tune scanning"
+  echo "Scan will stop when confidence exceeds threshold value of" $threshold "or after" $retries "retries"
+  tries=0
+  confidence=0
+  delay=$((delay-2))  # subtract 2 second built in delay
+  while [ $tries -le $retries ] && [ "$confidence" -le "$threshold" ]; do
+
+    sleep $delay
+    source /home/pi/venv/bin/activate
+    python3 /home/pi/CubeSatSim/groundstation/auto-tune.py 434900000 n 2> null > /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    # echo "auto-tune.txt"
+    # cat /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    confidence=$(awk '{print $2}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune confidence:" $confidence
+    tries=$((tries+1))
+
+  done
+  
+  if [ "$confidence" -gt "$threshold" ]; then
+    frequency=$(awk '{print $1}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune frequency:" $frequency
+  else
+    echo "Auto tune failed, frequency unchanged"
+  fi
+
+sleep 5
+fi
+
 echo "Frequency is" $frequency
 echo
 echo "If your CubeSatSim is transmitting in FUNcube mode (mode 7) you should get some frames after 30 seconds"
diff --git a/groundstation/packet.sh b/groundstation/packet.sh
index 2213b052..c8fdef00 100755
--- a/groundstation/packet.sh
+++ b/groundstation/packet.sh
@@ -39,7 +39,9 @@ sudo /etc/init.d/alsa-utils start
 
 echo
 
-frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=360 --title="Packet Decoding with Direwolf" --text="Choose the frequency for packet decoding" --column="kHz" --column="Application" 144390 "APRS US 2m" 434900 "CubeSatSim" 144800 "APRS European 2m" 145175 "APRS Australian 2m" Other "Choose another frequency" 145825 "APRS on ISS" APRS "Test APRS decoding with CubeSatSim WAV file")
+autotune=0
+
+frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=400 --title="Packet Decoding with Direwolf" --text="Choose the frequency for packet decoding" --column="kHz" --column="Application" 144390 "APRS US 2m" 434900 "CubeSatSim" Auto-tune "CubeSatSim Auto-tune" 144800 "APRS European 2m" 145175 "APRS Australian 2m" Other "Choose another frequency" 145825 "APRS on ISS" APRS "Test APRS decoding with CubeSatSim WAV file")
 
 #echo $frequency
 
@@ -77,6 +79,11 @@ elif [ "$choice" = "2" ] || [ "$frequency" = "434900" ] ; then
   echo "If your CubeSatSim is transmitting in APRS mode (mode 1) then you should see packets."
   echo
 
+elif [ "$frequency" = "Auto-tune" ] ; then
+
+  frequency=434900000
+  autotune=1
+
 elif [ "$choice" = "3" ] || [ "$frequency" = "144800" ]; then
 
   frequency=144800000
@@ -157,7 +164,41 @@ echo
 
 #fi
 
-sleep 5
+#sleep 5
+
+if [ "$autotune" = "1" ]; then
+  threshold=1
+  delay=1
+  retries=30
+
+  echo "Starting Auto-tune scanning"
+  echo "Scan will stop when confidence exceeds threshold value of " $threshold " or after " $retries " retries"
+  tries=0
+  confidence=0
+  while [ $tries -le $retries ] && [ "$confidence" -le "$threshold" ]; do
+
+#    sleep $delay
+    source /home/pi/venv/bin/activate
+    python3 /home/pi/CubeSatSim/groundstation/auto-tune.py 434900000 n 2> null > /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    # echo "auto-tune.txt"
+    # cat /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    confidence=$(awk '{print $2}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune confidence: " $confidence
+    tries=$((tries+1))
+
+  done
+  
+  if [ "$confidence" -gt "$threshold" ]; then
+    frequency=$(awk '{print $1}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune frequency: " $frequency
+  else
+    echo "Auto tune failed, frequency unchanged"
+  fi
+  echo
+  echo "If your CubeSatSim is transmitting in APRS mode (mode 1) then you should see packets."
+  echo
+
+fi
 
 value=`aplay -l | grep "Loopback"`
 echo "$value" > /dev/null
diff --git a/groundstation/pacsat-run.sh b/groundstation/pacsat-run.sh
index d19b9dba..89e0252c 100755
--- a/groundstation/pacsat-run.sh
+++ b/groundstation/pacsat-run.sh
@@ -78,7 +78,7 @@ sudo killall -9 direwolf &>/dev/null
        
     fi  
     
-sudo killall -9 direwolf &>/dev/null
+# sudo killall -9 direwolf &>/dev/null
 
 sleep 10
 
diff --git a/groundstation/pacsat.sh b/groundstation/pacsat.sh
index 58c803c7..68f390c4 100755
--- a/groundstation/pacsat.sh
+++ b/groundstation/pacsat.sh
@@ -43,16 +43,19 @@ if [[ $(gpio -g read 7 | grep 0) ]] ; then
 else
   echo "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
+  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
+
+  sudo killall -9 rtl_test &>/dev/null
+  
+fi  
 
 FILE=/home/pi/CubeSatSim/battery_saver
 if [ -f "$FILE" ]; then
@@ -108,6 +111,12 @@ elif [ "$loopback" = "1" ] ; then
     unzip PacSatGround.zip -d PacSatGroundLoop
     sudo rm PacSatGround.zip
 
+    mkdir PacSatGroundLoop/spacecraft
+    mv PacSatGroundLoop/PacSatGround/spacecraft/PacSatSim.properties PacSatGroundLoop/spacecraft/PacSatSim.properties
+    mv PacSatGroundLoop/PacSatGround/stp.dat PacSatGroundLoop/stp.dat
+    mv PacSatGroundLoop/PacSatGround/seq.dat PacSatGroundLoop/seq.dat
+    mv PacSatGroundLoop/PacSatGround/PacSatGround.properties PacSatGroundLoop/PacSatGround.properties
+
     sudo sed -i 's/logfile_dir=\/home\/pi\/PacSatGround/logfile_dir=\/home\/pi\/PacSatGroundLoop/g' /home/pi/PacSatGroundLoop/PacSatGround.properties
 
     FILE=/home/pi/Desktop/PacsatGround/spacecraft/PacSatSim.properties
@@ -133,7 +142,7 @@ else
     cd
     sudo rm PacSatGround.zip &>/dev/null
     wget https://github.com/alanbjohnston/CubeSatSim/raw/refs/heads/master-b/spacecraft/PacSatGround_0.46o/PacSatGround.zip
-    unzip PacSatGround.zip -d PacSatGround
+    unzip PacSatGround.zip 
     sudo rm PacSatGround.zip
 
     FILE=/home/pi/Desktop/PacsatGround/spacecraft/PacSatSim.properties
@@ -307,6 +316,8 @@ else
 
 fi
 
+sudo killall -9 rtl_test &>/dev/null
+
 sleep 10
 
 #echo "Stopping Pacsatsim"
diff --git a/groundstation/sdr.sh b/groundstation/sdr.sh
index 54ddb7a3..11298cd9 100755
--- a/groundstation/sdr.sh
+++ b/groundstation/sdr.sh
@@ -59,7 +59,7 @@ sudo systemctl restart openwebrx
 
 sleep 10
 
-setsid chromium-browser --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 & 
 
 sleep 10
 
diff --git a/groundstation/sstv_decode_prompt.sh b/groundstation/sstv_decode_prompt.sh
index 07c4cf05..5a398622 100755
--- a/groundstation/sstv_decode_prompt.sh
+++ b/groundstation/sstv_decode_prompt.sh
@@ -39,7 +39,9 @@ sudo killall -9 rtl_fm &>/dev/null
 
 #echo "s" >> .mode
 
-frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=220 --title="SSTV Decoding using QSSTV" --text="Choose the frequency for SSTV decoding:" --column="kHz" --column="Use" 145800 "ISS" 434900 "CubeSatSim" Other "Choose another frequency" SSTV "Test SSTV decoding with WAV file")
+autotune=0
+
+frequency=$(zenity --timeout=10 --list 2>/dev/null --width=410 --height=270 --title="SSTV Decoding using QSSTV" --text="Choose the frequency for SSTV decoding:" --column="kHz" --column="Use" 145800 "ISS" 434900 "CubeSatSim" Auto-tune "CubeSatSim Auto-tune" Other "Choose another frequency" SSTV "Test SSTV decoding with WAV file")
 
 echo $frequency
 
@@ -75,6 +77,11 @@ echo
 echo "If your CubeSatSim is transmitting in SSTV mode (mode 4) you should get images."
 echo "Note: if you see and hear an SSTV signal but don't get any images, the CubeSatSim signal might have a frequency offset.  Try rebooting the CubeSatSim to fix."
 
+elif [ "$frequency" = "Auto-tune" ]; then
+
+frequency=434900000
+autotune=1
+
 elif [ "$choice" = "3" ] || [ "$frequency" = "Other" ]; then
 
 echo
@@ -120,14 +127,48 @@ echo
 
 echo -e "Auto decoding SSTV on $frequency Hz"
 
-sleep 2
+#sleep 2
 
 setsid qsstv &
 
-sleep 5
+#sleep 5
+
+if [ "$autotune" = "1" ]; then
+  threshold=1
+  delay=5
+  retries=5
+
+  echo "Starting Auto-tune scanning"
+  echo "Scan will stop when confidence exceeds threshold value of" $threshold "or after" $retries "retries"
+  tries=0
+  confidence=0
+  delay=$((delay-2))  # subtract 2 second built in delay
+  while [ $tries -le $retries ] && [ "$confidence" -le "$threshold" ]; do
+
+    sleep $delay
+    source /home/pi/venv/bin/activate
+    python3 /home/pi/CubeSatSim/groundstation/auto-tune.py 434900000 n 2> null > /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    # echo "auto-tune.txt"
+    # cat /home/pi/CubeSatSim/groundstation/auto-tune.txt
+    confidence=$(awk '{print $2}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune confidence:" $confidence
+    tries=$((tries+1))
+
+  done
+  
+  if [ "$confidence" -gt "$threshold" ]; then
+    frequency=$(awk '{print $1}' /home/pi/CubeSatSim/groundstation/auto-tune.txt)
+    echo "Auto tune frequency:" $frequency
+  else
+    echo "Auto tune failed, frequency unchanged"
+  fi
+  echo
+  echo "If your CubeSatSim is transmitting in SSTV mode (mode 4) you should get images."
+  echo
 
-#sudo systemctl restart cubesatsim
+fi
 
+#sudo systemctl restart cubesatsim
 
 value=`aplay -l | grep "Loopback"`
 echo "$value" > /dev/null
diff --git a/install b/install
index 964e13ed..1992de40 100755
--- a/install
+++ b/install
@@ -404,12 +404,21 @@ fi
 	sudo systemctl disable gpsd
 	sudo systemctl disable gpsd.socket
 
-if [ ! -d "/home/pi/WiringPi" ]; then
+#if [ ! -d "/home/pi/WiringPi" ]; then
+#	cd
+#	git clone https://github.com/alanbjohnston/WiringPi
+#	cd WiringPi
+#	./build debian
+#	sudo dpkg -i debian-template/wiringpi-2.61-1.deb
+#fi
+
+if [ ! -d "/home/pi/WiringPi3" ]; then
 	cd
-	git clone https://github.com/alanbjohnston/WiringPi
-	cd WiringPi
+	git clone https://github.com/WiringPi/WiringPi.git WiringPi3
+	cd WiringPi3
 	./build debian
-	sudo dpkg -i debian-template/wiringpi-2.61-1.deb
+	mv debian-template/wiringpi*.deb .
+	sudo apt install ./wiringpi*.deb
 fi
 
 cd
@@ -611,6 +620,7 @@ fi
 
 if [ ! -d "/home/pi/rpitx" ]; then
 
+	sudo apt install -y libraspberrypi-dev
 	cd
 	git clone https://github.com/alanbjohnston/rpitx.git
 	cd rpitx
diff --git a/pacsatsim.sh b/pacsatsim.sh
index 24350f6b..49213e18 100755
--- a/pacsatsim.sh
+++ b/pacsatsim.sh
@@ -50,14 +50,14 @@ else
   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
+#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
 
 value=`cat /home/pi/CubeSatSim/sim.cfg`
 echo "$value" > /dev/null