Shark Fins on VW Passat: Identification Guide

Hi .

Apparently, there are different types of "shark fin" antennas available for the VW Passat 3C Variant.

"The 'big one' is mine: a radio with diversity antenna, and a business package including a phone."

The other one is a Passat that appears to be slightly older and had a navigation system.
As far as I know, my car's configuration already includes the antenna for navigation.

Are these simply different versions depending on the year of manufacture, or do they also have technical differences?

Thank you.
Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

Hi,

Does anyone know anything about this?

Could it be that only the shape has been changed?

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

Just as a side note, the Audi Q7 has a similar variant, or at least one that is very close.