I have a link of 11 kilometers and i can get a signal strength of -70 dBm, the interface are running and i can configurate with winbox a client radio from ap.
But i cant make a ping from ap or from client.
The link configuration is:
both cards tx power 26dBm
frequency 5820
nstreme with best fit
client antenna grid 29 dBi
ap antenna grid 26 dBi
Sorry i can fix the problem, was the hardware bad attachment