Wireless Joint

Hello

Has anyone a WiFiX AD4M or QuPanel 5G/LTE MIMO 4x4 (4G/5G 4x4 MIMO) antenna? (they are the same)
https://thewirelesshaven.com/shop/antennas/cellul ... onnectors/

https://quwireless.com/product/QuPanel-5G-LTE-MIMO-4x4

I'm searching for photo of the inside of the antenna to see if it is well buit or not.
How about the performances?

I find the theoretical gain quite low at 3400-3800Mhz:




Thank you

Oh that doesn't look good at all