[Intro] Piano: C - E- G - C (ostinato) Electronic: white noise, gradual filtering
| Strategy | Application | |----------|-------------| | Timeout prosigns | Use "BT" (pause, but more to come) or "AR" (end of message) | | Training | Simulate null periods with random idle gaps to desensitize | | Visual backup | Display timing histogram to differentiate null vs. end | | Protocol | After 2 seconds of null, send "QRL?" (is line busy?) | nullxiety morse code