.... Anything on SW...?

You mean, radio traffic to the embassy in DC? Probably.

I googled for "antenna Russian embassy" bub didn't see anything
exciting on the first page of hits. There was a link to a Bill Gertz
article that may be interesting.

"Russian merchant ships used in spying"
http://www.c4i.org/rmss.html

I see this is happening off the Pacific coast of Russia. If it were
near Norfolk, I might be able to hear something.

The sub is said to be 625 feet below the surface, way too far down for
the wet exit. Pressure at that depth is about 300 psi.