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I've heard this before and wanted a professional opinion: When selecting channels for your AP, put it not one, but two channels away from other nearby access points. For example: If another access point is on channel 3, you want to use 1 or 5, not 2 or 4. The radio signal for a channel can overlap into the one before and after, causing radio intereference and thus, performance issues. I think I've seen this on cruise ships before, where they use channels 1,3,5,7, etc. Can anybody confirm this?