I hate to say it, but i also have the strong feeling that we are a little bit lost at the moment.
The morse code did never change and only gives the closest steller objects name in the same system away. The purrs resist everything, beside that change in this two videos. The Mayan Numbers seem to lead nowhere. The other noises are not complex enough to contain data.
In my opinion the only good leads we have are:
The Plague
New Plagues with unknown transmission methods appearing at about the same time as new unknown artifacts who emit strange clouds are never a good sign. But what could we do? Bringing more UAs in a System where the plague already broke out? What could we possibly learn from it? And why are the systems like Sleipnir - where dozens of tests have been done - not infected? I searched last evening in the system named in the galnet news for a while and also found no UA. (I had the theory that we maybe need to find and remove the UAs from those systems, to help them recovering.) Any other ideas?
The 2-Purr Videos
We have 2 videos where the purrs behave different then in dozens of other tests. In fact this is the ONLY case where the artifact is doing something different. We should find out why.
I think we should focus a bit more on this two theories again.
I agree that there could a significance in the 2 purr recordings, but to be honest there really isn't anything intelligible in the purrs themselves - certainly not in terms of 'encoded data'.
I've just been doing some exploring and have been reminded (again - the similarity was mentioned early in the last thread, before we knew about the morse) of how some of the UA sounds are similar to the DSS, even some of the higher warbles, which happen during the purrs, sound just like it.
What that means, I don't know - could just be coincidence. But it's location aware, and like our DSS, which takes longer to resolve its target the further away you are, might be too far from its actual target to be able to do something, well, 'extra'.
Based on that theory, we'd be looking for audio which gets shorter and longer based on location - assuming it's only one location it's looking for. The number of purrs could be a clue, but the change in the number of purrs was observed in the same system (but was it the same location in that system?).
It mightn't be external systems it was looking for, but specific locations within any suitable system. Problem with that theory is that the UA is very well-travelled now, with multiple recordings from multiple locations, and not much 'consistent variance' has been observed between them, except the Morse.
With regards to the plague - as I said last night, I really don't think it's plausible that it's the source of the outbreak - far too easy for UA carriers to spread the plague like wildfire - assuming the very presence of the UA was enough to spread it. Admittedly, there are coincidences between the plague systems, the phage idea, and the UA itself, but if a plague system was a key location to the UA, then I think FD would have programmed behaviour into it that would make it obvious we were getting warmer when it was released in that system.
There must be something about the UA itself and, most likely the sound it emits, that provides a keen observer with all the necessary information to figure out what to 'do' with it, if anything. Outside of community generated Galnet articles, the only other 'official' information about the UA is the trailer, the convoy chatter, and the UA itself.
My guess is that once the Morse was discovered, it was expected we'd figure it out from there, but we haven't.
We're missing something blindingly obvious here - and by obvious I don't mean hard-to-hear sounds - I think the next step is a logical one from the information we have - possibly with a bit of lateral thought (not great at that, sorry!).