2.4Ghz 40Mhz 802.11n wifi and Apple Macbook

[bruns at 2mbit.com (Brielle Bruns)]

On 6/14/15 12:33 PM, Anurag Bhatia wrote:
> Hello everyone,
>
>
>
> I am running a TP Link TL-WR1043N which (as TP Link says is a) 802.11n
> router working on 2.4Ghz (no support for 5Ghz). I am running it with
> flashed OpenWRT.
>
>
>
> While using option to pick 40Mhz, I see my Mac only gets 20Mhz to use and
> speed is always 130Mbps. There's no other SSID nearby and I am sitting next
> to router for testing.
>
>
> This brings me to question - Has anyone successfully used 40Mhz with 2.4Ghz
> on 802.11n standard with Apple Macbook? I wonder if it's limitation on the
> chipset or something else.
>
>
>

Everything that I've seen/experienced says that Apple devices won't use 
40mhz channels with 2.4 due to the overlapping bands/lack of good 
separation between channels.

However, I'm not sure if this specifically applies to just the Airport 
APs like the Extreme, or to the laptops as well, as I use AE's at home, 
and the Unifi APs I do have in service all have 20mhz channels only set 
on them to avoid issues.


-- 
Brielle Bruns
The Summit Open Source Development Group
http://www.sosdg.org    /     http://www.ahbl.org