"I have received all of the last transmission". R was called Roger in the radio alphabets or spelling alphabets in use with the invention of the radio (before being replaced with Romeo). Roger does not mean or imply both "received" and "I will comply." That distinction goes to the contraction wilco (from, "will comply"), which is only if intended to say "received and will comply". The phrase "Roger Wilco" is incorrect, as it is redundant with respect to the intent to say "received".