Hi RodM,
I cannot answer any of your questions, but this may ad to solving some of the puzzle:
Names and callsigns for Luftwaffe JK and JD control centers (Gefechtsstände):
http://www.gyges.dk/Luftwaffe%20comm...facilities.htm
you will see some blanks. I would be grateful if you, based on your material, could help fill these.
Operational brevity code used for radio traffic by Luftwaffe nightfighters and control centers:
http://www.gyges.dk/Operational%20brevity%20code.htm
Command and control arrangement for II JK spring 1945:
http://www.gyges.dk/II%20JK%20spring%201945.htm
bregds
SES
www.gyges.dk