Amateur mode 3596 kHz - FSK?

[alleycat]

I'm seeing several frequencies in the 80 meter band with nearly 2 kHz-wide bursts that appear to be some sort of FSK (although none of the sources I'm familiar with, such as SigIdWiki, seem to identify an FSK variant with this wide a bandwidth). Audio clip at https://www.lutins.org/temp/radio/3596.mp3 with waterfall as depicted below. Any ideas? Thanks!

[CoryD81]

Link to audio not working. Waterfall pics are also a huge help if you're able to get any.

[alleycat]

After over 6 months without a reply I deleted the audio file. I had originally included a waterfall image in my post; that too got deleted.

[Josh]

I show a few CIS fsk modes with a 2kc shift;
CIS_98.8_2000, 98.8 baud
CIS_100_2000, 100 baud, listed as REA4 Russian AF HQ Moscow
Both listed shifts might be the same modem running different encryption and/or framing, dunno.

Next closest shift in wcode hf table;
BAUDOT F7B, 1550 shift, 250 baud, listed as UKR (Ukraine) FSK encrypted via T207 modem