I swear that this is the last time I'm writing this
Omni and cm9 is duyin' on stormy weather!
Prism doesn't have that problem!
So, try using sector or panel antennas if you use cm9.
It's just the problem with the omni antenna design. You can't do anything about it, it's the way it is.
Let me guess
You want (for small amount of money I assume) to have 360 degrees good signal, 100+ client and to work superb and without problems?
IN YOUR DREAMS!
I drink like a pirate and smoke like a hippie...