After I mounted an RX diversity module on my Nazgul Evoque V2, I needed to place the second antenna in the front of the drone so that I had a very good signal even on the way back.
It's usually put under the cam to have a good signal even when the drone is facing back, but I didn't have this problem since I have the other antenna in the tail of the drone. Mounting it on top instead greatly improves the return reception since it is completely free from the frame.
I printed it in PETG.
To be used with soft antennae since it goes directly inside the holes.