Communication is a two-way street. When it is only one way, you are asking for trouble. That’s true with people, and it also happens with radio-controlled models! Your control signal from the transmitter to the receiver is one side of the conversation. The other is the telemetry signal coming back from the receiver to the transmitter giving you vital information. That can help you avoid a crash, and in the unfortunate circumstance where you do have a problem, it can help you sort out what it was.
This article goes into great detail into some recent testing that we did with receivers, utilising telemetry to sort out the issues.
RC Jim 