Hi!
I’ve some links with routeros with a mix of PC and RB…
For example i have a link:
1 side:
PC P4 DC 512Mb ram
Atheros R52H
3Mt cable RF400
22db 5Ghz Flat Panel
Nstreme enable
Distance about 3Km
signal -70db !!!
2 side:
RB532
Atheros R52H
3Mt cable RF400
22db 5Ghz Flat Panel
Nstreme enable
Distance about 3Km
signal -70db
…my problem is that my maximum toughtput is 8,3mb/10mb (UDP protocol, both direction)
I wish I could arrive at least at 20… (better more!) 
any suggest??
Your signal level is low for that distance. You should be closer to -56 on both sides. Try different channels. If that doesn’t help, your antennas are not aligned properly.
Also, check the CCQ values. They should be 100/100 on both sides.
Travis
in fact i have another link with same places… same side1 and side2, the only difference are that in this link i have 2 gregorian 24db antennas and nstreme no enable… i have this value:
simply better…
so do i have to change in my first link the 2 flat panel antenna?
(p.s. in 2nd link Ntreme is disabled..)