Good signal, no data

We have a problem with RB 532 and two atheros cards. There are three clients connected to one sector antenna. The signals are good (60 - 75), but there are some complaints that no data goes through. One ping out of 100.
What could be the problem.

  1. Intereference
  2. Bad antenna
  3. bad Cable
  4. humid in connector

Perhaps faulty cards. bad Ack Setting and etc.

hope it helps.

Is there a recommended ACK setting beside the default

I had this issue happen to me one time, and I thought it was a bad RB or cards… I switched out the cards and the problem was still there… On a suggestion from somone else on the boards, I /system reset the configuration and reprogramed it. Came right up and never had to do it again.

ack should be set to dynamic if it is longer than 2000 meter.