Hi Nick,
Understand what you mean. There is an excellent British post war intel report on the Luftwaffe Funkaufklärings Dienst. It took ages to read it, as I had to try and figure out what each operational, technical and unit term would be in German.
Well the background for my question was, that I am on the hunt for an Abschnitt Flugmelde Zentrale in the Kristiansand area, which had scramble authority and intercept control facilities, but even with tremendous help from Norwegian colleges it remains un-located.
For an in depth explanation please see:
http://www.gyges.dk/luftwaffe_ln%20norway.htm
bregds
SES