Geographical locations of Luftwaffe signals intelligence intercept outstation locations in the west of Europe, in the middle of 1941. from IF-181 p.28a of [1]
Own work
This file was derived from: Luftwaffe signals organisation in the west, middle of 1940.svg
Derived from;

[2]Information from:

Scope creep
Goran tek-en, following request by Scope creep