Ustar have made a mistake regarding the standard German "star" antenna.
These two CAD images show the right-hand antenna position on this model. The first image shows the "star" antenna installed in its armoured tub, which is correct if the tank carries the Fu 8 radio in the hull (this model kit doesn't provide that radio).
If the tank carries the Fu 7 instead, the "star" antenna would not be present. Ustar provide a round photo-etch disc to seal off the tub. That is just wrong. There was no cover for the tub. The antenna stub, the rubber base, and the ceramic insulator would remain here even if the antenna was not in use. No cover was necessary because the "tub" had a rainwater drain.