put APRS changes from dev into this branch for merge

rpitx.py

@@ -55,7 +55,13 @@ if __name__ == "__main__":
 			if (('a' == sys.argv[1]) or ('afsk' in sys.argv[1])):
 				print("AFSK") 
 				while True:
-					time.sleep(5)
+					try:
+						f = open("ready")
+						os.system("gen_packets -o telem.wav t.txt -r 48000 > /dev/null 2>&1 && cat telem.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3 > /dev/null 2>&1")
+						os.system("rm ready")
+						time.sleep(0.5)
+					except:		  
+						time.sleep(0.5)
 			elif (('s' == sys.argv[1]) or ('sstv' in sys.argv[1])):
 				print("SSTV")
 				try: