"E11" is one of the "Enigma" designations for a Spy numbers station -- this being the one for Polish spies it is speculated. See http//priyom.org/number-stations/english/e11.aspx for more details on this one.
And to answer your question "2,2,8, oblique, 0, 0" is what the audio of the station was during the time reported ....
--DXing from EITHER
-MI2 Michigan's "Thumb" or
-MI South Central Lower Michigan