Now I finally did, pls. see attached image, originally from Alkali (thanks and credits..), with pasted lengths in cm. There are only minor differences in comparison with those from Poland -> I guess we can take it as a fact now, Freya EGONs on Stoppelruebe were about to be put on a wooden tower.Did you take some measurements?
A couple of news from Pegasus site (not anything revolutionary, just some new finds):
The undeground part of a water station was discovered nearby garrison. As a complement, the pumping station and a well were found 900m away in the woods, and also 80m (!) below the garrison level. Quite a challenge for water pumps. Pictures attached.