Thanks for the answer.
But, if I install the same type of antenna (i.e. MA-ANT-23); should the point the same direction?
because I have read on some forum posts that the antenna needs to aim in the same coverage area.
and another question. for the mesh deployment, can I choose one particular antenna to become the repeater/backbone to the gateway (i.e.MA-ANT-25) and another antenna (MA-ANT-23) as a wireless broadcast for the client?