I have traditionally seen channel 6 as the most, and 1 as the best. And then there's a few idiots on like 4 and 7, making only 2 usable (although one time in a dorm with horrendous interference, I found something like 3 or 4 to be the only thing that was remotely usable, as it partially fit in between 1 and 6).
I hate this. I'm forced to use channel 9 because 1, 6, and 11 are completely saturated. One neighbour runs two access points on two separate channels with 40MHz bandwidth and another uses channel 4. My LAN speeds over Wireless N rarely go past 20mbps on most channels. I get 30mbps on channel 9.
Another AP popped up last week on channel 7. I think 802.11ac will be my saving grace. I keep putting more devices on my wired network every week.
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