Hey @onno
A customer asked me a question...
If they have an AP374 and a 4x4 D608 ANT, can two be connected to 2.4GHz and two be connected to 5GHz? For 2x2 2.4GHz and 2x2 5GHz using a single D608? They would only be doing this for test purposes. The final solution being all $ connected to 5GHz and a separate ANT for the 2x2 2.4GHz.
Looking at the makeup of the 4x4 D608 ANT, I said I would not recommend it but I would verify with you guys if it could be done or not.