Hi Guys

My local supplier is selling these Radwin devices that apparantly can do 100mbps full duplex but the price tag is extremely expensive.

So have any of you achieved this with Mikrotik?

My Gut feeling is to use an RB800+daughterboard and then have 8x R-52H connected to 4x Dual polarised antennas to create 4x NStreme dual interfaces and then bond them all together.

Is this overkill?

What distance you need cover?

about 30km..

Two 5GHz 40MHz wide 802.11n links with OSPF load-balancing/failover would be much better than nstreme-dual link IMHO

Edit: Looking at their documentation I don't believe they can do 100Mbps full-duplex at 30km.

Same setup but without OSPF load-balancing. Just separate data flow with different gateways. I test on 10km and make stable ~ 190mbit on each direction with b-test. But I am not sure about 30km.

Would using separate gateways be better than bonding?

For 802.11n at this moment yes.