added rpitx restart

afsk/main.c

@@ -219,6 +219,9 @@ int main(int argc, char * argv[]) {
 	    
     }
   }
+	
+  FILE * rpitx_restart = popen("sudo systemctl restart rpitx", "r");
+  fclose(rpitx_restart);
 
   // Open configuration file with callsign and reset count	
   FILE * config_file = fopen("/home/pi/CubeSatSim/sim.cfg", "r");