[asdz]

have anyone try to do bonding? 5 x 10 Mbps = 50 Mbps over 1km

[notpushkin]

If you do directional antennas, and I'm not sure how far away you'd have to place them for signals not to interfere with each other. Nice idea tho.

[TickleSteve]

You would have to ensure each bonding-channel was on a separate RF-channel, otherwise instant collisions.

[zoobab]

If you can set different fixed channels on different transmitters, you could use Multipath-TCP routers to aggregate multiple routers:

https://github.com/Ysurac/openmptcprouter https://www.openmptcprouter.com/

I mentored the port of MPTCP to OpenWRT years ago, and OpenMPTCPRouter took some of this work in their port.