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cpayne5 · 03-15-2010, 11:40 AM

It may be an interference issue.

From an earlier post, I said...
"Also note that 802.11n uses 2 channels (40MHz in total, for those keeping score at home), so if you live in a congested area, you may run into noise problems with neighboring 802.11b/g/n devices."

802.11 has 12 channels in the US. Of those 12, only 3 are non-overlapping at 20MHz channel widths (b/g). So, theoretically, if you see 4 SSIDs, there is interference on at least one channel (and with devices coming from the factory set to channel 6, they all may be using the same channel!). N uses 40MHz channel widths, so you do the math on how much noise there may be on the 2.4GHz spectrum if all your neighbors are using N too.

You can change the channel on which your device operates. Do a site survey, ie look at all the SSIDs visible from your device, and note their signal strength and channel number. Set your device to use an empty channel, or a channel with the lowest signal if a device is already operating on that channel.

03-15-2010, 11:40 AM	#18
cpayne5 Playmaker Join Date: Feb 2004 Posts: 3,807	Re: Wireless N+ It may be an interference issue. From an earlier post, I said... "Also note that 802.11n uses 2 channels (40MHz in total, for those keeping score at home), so if you live in a congested area, you may run into noise problems with neighboring 802.11b/g/n devices." 802.11 has 12 channels in the US. Of those 12, only 3 are non-overlapping at 20MHz channel widths (b/g). So, theoretically, if you see 4 SSIDs, there is interference on at least one channel (and with devices coming from the factory set to channel 6, they all may be using the same channel!). N uses 40MHz channel widths, so you do the math on how much noise there may be on the 2.4GHz spectrum if all your neighbors are using N too. You can change the channel on which your device operates. Do a site survey, ie look at all the SSIDs visible from your device, and note their signal strength and channel number. Set your device to use an empty channel, or a channel with the lowest signal if a device is already operating on that channel.