Update beacon.py

Author: mgleason-bishopfox

beacon.py

@@ -32,7 +32,7 @@
     wireshark = WiresharkObserver()
     radio.add_observer(wireshark)
 
-CHANNEL = args.channel
+radio.set_channel(args.channel)
 
 print_notify("Sending the beacon request")
 radio.send(beacon_request(random.randint(0,255)))