Has any one tried 3 of the cards using 5mhz channels and did it work. If not I will run more ethernet of the tower but I already have the rb600. Let me know what you think.
thanks

you're doing or link between MTs or MT to a laptop?

I currently have 1 6db omni and 31 clients which are also mikrotik with xr9 radios. I was going to replace the omni with 3 sectors but I like to keep things very simple so that's why I was wondering if the cards would interfere with each other in the same box more than in separate ones. thanks

yes, they will cause more interference in the same box.