I have a router with 2 Atheros cards (both in master mode). Signal
quality was very good (ath0: 62/94 and ath1: 70/94). But then I
decided to add one more and strange things happened. Signal of the
first card (ath0) left the same 62/94, but ath1 droped to 30/94. No
antenna was moved during installation. Are there any limitations in
the driver? Even changing channels quality remains bad :(
Where could be the problem?
P.P.S. Third card (ath2) quality also is bad 29/94 while distance is the
same as other cards distances.