We share a comms tower that sometimes is used for police and emergency services radio. This is happening now and a lot of our wireless clients are being disconnected despite good signal strength in the wireless tables. Normally these links stay up for weeks.
Although they are transmitting on 400MHz they are pushing out several watts from antennas close to our main omni.
Does this sound like an interference problem and what could we do to reduce it?
Our 5.8GHz equipment is unaffected BTW
Assuming you need to be as close as you are to the other antennas (even a few cms could make a difference) how about changing the omni for something directional with a good front to back ratio?
I’m told that the main source of interference is classified! 
It is a military area and there are big security issues at the moment. Apparently the source it is not installed on our tower either.
Anyway they are keeping us informed about when it might happen again. 
Trisc
Possibly a radar…and you cant do a thing about it 
A switch to band C with DFS and radar detect might cure it but obviously that’s a big change!
Might be worth putting up an RB500 with CM9 card or one of the new OSBridge 5GHz APs to see if it’s immune. At least then you’d have a fall back position if the problem gets worse.
I’ve been having similar problems too and got a friend to have a look with his spectrum analyser. We found… my network and no interfearance although I notice more problems during the day than at night I found the problem has been slightly helped by swapping one radio for another (PM if you want details)
Hmm…there’s PM on this board?
I’ve lost your email address in a recent hard drive failure, can you send it to me?
Cheers.