diff --git a/demo.sh b/demo.sh
index de318527..38aa9a74 100755
--- a/demo.sh
+++ b/demo.sh
@@ -15,8 +15,9 @@ if [[ ("$1" = "a" ) || (("$1" = "c") && ("$(($y %4))" = 3)) ]]; then
    	echo "Mode is continuous AFSK"
     	/home/pi/CubeSatSim/radioafsk afsk
 elif [[ ("$1" = "b" ) || (("$1" = "c") && ("$(($y %4))" = 1)) ]]; then
-   	echo "Mode is continuous BPSK"  
-    	/home/pi/CubeSatSim/radioafsk bpsk
+   	echo "Mode is continuous BPSK" 
+    sudo cpulimit -l 5 -P radioafsk &
+    /home/pi/CubeSatSim/radioafsk bpsk
 elif [[ ("$1" = "s" ) || (("$1" = "c") && ("$(($y %4))" = 2)) ]]; then
    	echo "Mode is continuous SSTV"  
     	while true; do sleep 5; done