Δαφνη Ευτυχια Αρθουρος

You are exactly right about the listening stage. For me, the 'dah-dah-di-di-di' sounds exactly the same as a '7' looks. At my best time, the mind was not at all involved in the decoding; the sounds flowed right from the ear to the hand holding the pencil, and while the hand was transcribing the traffic, I was free to think of other things -- including listening to completely different networks on other radios.