Hi,
I have small community network powered by mikrotik software and PIV machines.
Network is located in a village with one WISP having 2 omni antennas, our network have 6 antennas.
I have problem with interference, and I think I shouldnt 
.
There is nothing else in the air. Is there some ‘secrets’ in deploying such networks?
wireless scan for 802.11, or used a spectrum analyzer.
As I said we are wireless community , we dont have expensive equipment for scanning the air, also I sad we are located in a small village so wireless scan shows besides our antennas 2 or 3 AP-s. So very little wireless AP-s are in 10KM radius.
Fot the time being we are using TP-Link and other “no name” PCI atheros cards, and various client equipment. Network is used for heavy file transfering. We have 6 stations on antenna, so number of clients is not the problem. We cannot get 4 Mbps per antenna 
.
So it’s not interference then. Search the wireless forum for possibilities. You can learn a lot from other user experience from this forum. I did. 