Hi!
Just a comment in regards the types of sternantenna that were used and the head-configuration:
There were at least two six-pole configurations in use: the conical form generally seen as a styrene kit piece in some Dragon kits and also as nicely done in the Tasca 1/35 Pz.II L "Luchs" kits using a PE part and a conical form - and seen in some photos of later-war vehicles -, and the "flat" form as seen in that pic posted by Melchior from panzerbaer.de/... So, that pic showing that flat head configuration is actually of a "good" configuration, and not one which is "just not bend into right form" (sic)!
The flat configuration is particularly well-documented mounted on ex-Italian AB 41 and AB 43 armored cars in German service - and portrayed in the Italeri and Tamiya kits of same as being folded down at the end of its "stab" or rod base. I would post a war-time pic or 2 of these rigs as deployed here, save that I don't know how to post images these threads! So, if you Google the Italian AB 41 and / or AB 43 and look thru the available real photos, you can easily find examples showing the flat 6-pole head in "action"!
Both the conical and flat configurations utilized 6 rays attached to a central disk base in a manner which allowed the rays to be folded down in a bundle for packing in a metal, leather or cloth sleeve. Most of the PE pieces I've seen of these heads have a simple etched disk with extended flat rays which instructions say to bend upward at ca 45 degrees... There probably is no really good way to "trough" these flat rays to better represent their real nature, and the disk or central bits don't appear to show any real detail corresponding to what appears in some photos... I think adding a small hex-disk of thin styrene on top on the center to cover over the connection of rays to hub could help add dimension and at least imply the attachment of the rays to same- but that's just my opine! (and what I've done with a couple of these on builds). The PE bits are much closer to scale than are any styrene kit bits, so far as the slim profile of the rays is concerned.
Cheers!
Bob