I found this Freescale/UT paper online. The frequency ranges investigated fall into our area of interest for Blitzortung. It was written for smart grid data (Power Line Communication) OFDM systems, but I think that the noise types and spectra are in the band that we are looking at.
http://users.ece.utexas.edu/~bevans/papers/2013/PLCcyclic/cyclicPLCnoiseISPLC2013Draft.pdfThere are 3-d plots for a variety of noise culprits, captured with a Freescale PLC G3-OFDM modem.
It would be slick to run one of these plots during interference mode noise.
Greg