Was able to get abit better view of the signal with the settings and steps below. To summarize I am going to agree/say it is a FSK (technically MSK/GMFSK) 100Kbs, 50kHz Shift.
It might be possible to manually determine bits, but it would be REALLY tough. Better off figuring out a way to demodulate it. (GRC? MATLAB? ) Too bad baudline does not have a demodulation tool. (Perhaps others know some tools for doing that.) The previous posts SETI picture somewhat looked like a constellation plot from a PSK demod, but I couldn't figure out how to do such a thing with my buadline. Just started playing with it tonight. More notes below.
Zoomed in more abit more:
Zoomed in as far as Baudline allowed, slightly after the repetitive pattern:
Region of interest Highlighted then adjusted input/color Aperture to make the signal "pop" more
Manually measuring baudrate of signal: (with time makers)
Duration of 10 likely bauds = .0001 (seconds), so 1/(.0001) x 10 = 100,000 ----So I think your correct about the source of the signal, and your information on it sounds correct.
From the images above I think it is still hard to say "FSK" (maybe the documentation was using that in generalities), but perhaps it is really MSK:Log in or register to see all links. Getting a measurement of shift between the high and low freqs was tough to do. I was finding around 50K (which makes the MSK a good match, and perhaps explains abit why the frequency transitions look so blurred.) All told this was a stretch to do in baudline. MSK is tough to look at and be certain, could be GMFSK I suppose, also it kinda looks BPSK abit... Perhaps someone else will figure out a more refined was to be sure (other than eye-balling it.)