Originally Posted by
Another_CFI
From CAP413 the definition of ROGER is "I have received all your last transmission".
There is no assumption of understanding. You could receive a message containing technical information, which you do not understand, but as long as you have received the message, even if it means that each word has to be spelled phonetically, then the response is ROGER.
An interesting ambiguity - WILCO is "I have received your message, understood and will comply", but in the current CAP 413 as you say ROGER is "I have received your message".
I can't think of any situation where I would use ROGER if I had not understood the message - even if at current iteration that's what CAP 413 says. Can you?
I'm sure at some point where I was learning "and I have understood" was in there, but I don't think I have any old manuals to check the point.
G