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![]() For some reason, your Edimax clients don't want to join your Cisco/Linksys E2000 using 40MHz channels even though your E2000 is configured for it.Ĩ02.11n talks of 40MHz operation in terms of two traditional 20MHz channels used together. My best guess is that you're hitting an interoperability bug. However, I'm not aware of any vendors that actually set or honor the 40MHz intolerant bit at this time. For instance, a laptop with an 802.11n adaptor and a Bluetooth adaptor might signal this when it's using a 2.4GHz 802.11n AP that is 40MHz-capable. The IEEE 802.11n spec has a provision for 802.11n devices to signal that they are "40MHz intolerant", to try to get 40MHz-capable 802.11n gear in their area to limit themselves to 20MHz channels. But reviewing the specs of your Cisco/Linksys E2000 and those Edimax products, it seems like they should all support 40MHz operation in 2.4GHz. I know there are some products that refuse to do 40MHz channels in 2.4GHz because that takes up too much of the 2.4GHz ISM band's space, leaving no room for other uses of the band, such as Bluetooth (including your Wii Remotes). The fact that you're seeing a 144mbps signaling rate indicates that you've got the 2x2 and short GI right, but you're only using 20MHz channels instead of 40MHz. 2x2, or 2T2R), 40MHz channels, and a short (400ns) guard interval (short GI). ![]() To get 802.11n's 300mbps signaling rate, you have to do two spatial streams (a.k.a. ![]()
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