Double-post, sorry - bit a change of topic from my previous post...
I've said it a few times - we have the known Morse and, from that, there's mystery enough in and off itself:
Why Morse? No idea - but we understand it, and that could be the simple reason; our equivalent of the anthropomorphic principle in-game.
Why is it not proper dits and dahs? My answer - because it's not a computer able to generate tones - it's generating the only way it knows how.
Why the nearest body? The only likely answer I have is because it expects someone to be listening who's interested, or who doesn't already know. It's unlikely to expect that audience to be in another system, though, because it's broadcasting with RF, which only travels at light speed. If it were using subspace to send the Morse, then we wouldn't 'hear' it in the first place.
Why use human designations? Unknown - unless it's actually human, or based on something human, or has 'stolen' access to our galaxy dataset. Higher level argument: perhaps it intended 'audience' doesn't know the human designations, and this is their 'tool' for doing so - but why then transmit in human-readable Morse and not some other language/format? So, actually, perhaps the point of the Morse broadcast is actually to make it clear to nearby agents that it is aware of its surroundings and that it's more than space flotsam.
There's so many angles here, and these, I think, are where our chances of solving this riddle lay.
Keep up the good work, all, though - one or some or all of us has or will make the next idea for the next breakthrough
