Hi. I think I might me missing something as regards adding external antennas to my X50-5G as I get much worse and unstable signal when I add them.

I have tried two types of antennas.

One is the nedis 5g/4g/3g Outdoor antenna. The other is a pair of Teltonika 5G mobile Antennas. Please see the attached photos.

Are these antennas not compatible?

Also, you see that X50-5G has two "RP-SMA Female" sockets. All the 5G antennas have "SMA Male" sockets. So the only way to connect a 5G antenna to the X50-5G is to get an adaptor (SMA Female on one side and RP-SMA Male on the other side). I managed to find such an adapter (please see the attached photo).

Question:

Why did Tp Link do this? Why they put RP-SMA Female sockets? Why didn't they put SMA FEMALE sockets on the router for connecting 5G antennas which come with SMA MALE sockets? (so there would be no need to use an adapter).

Am I missing something? The antennas that come with RP-SMA MALE sockets  (and connect to the X50-5G without the need of an adapter) are for wifi, not for 5G/Lte.

In any case, even if I use the adapter and I connect the external antennas, my signal is worse.

Is this a software or a hardware problem? Unless I am doing something wrong or using wrong antennas. 

Your kind assistance will be appreciated.