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I have some AP 1100 and 1200 that shows 100% busy channel from 6 to 11 everytime.
Is there anybody with the same problem?
I tried to disconnect the radio alarms close to AP but there are still interferences.
Thanks in advance
The only way to be sure of what's happening is to get a Spectrum Analyser.
As stated before,get a spectrum analyzer. Turn off G and use B only and see if the percentage goes down.
If you do not have access to a real spectrum analyzer and/or one is too expensive, get a WiSpy from http://www.metageek.net/
They are cheap and give a good idea of channel usage, but are not a substitute for a full blown analyzer. To what it looks like: