2.4Ghz 40Mhz 802.11n wifi and Apple Macbook
Josh Reynolds
josh at spitwspots.com
Mon Jun 15 04:06:12 UTC 2015
40MHz on 2.4 is note widely supported, and for good reason - it sucks up the entire unlicensed 2.4GHz band (if you include the 802.12 mask).
On 5GHz, 20/40 are supported, and 80/160 in current and future versions of 802.11ac.
On Jun 14, 2015 7:56 PM, Alexander Maassen <outsider at scarynet.org> wrote:
>
> Shoot me if i'm wrong, but doesn't a mac prefer MIMO in order to work
> correctly?
>
> On Sun, June 14, 2015 8:42 pm, Brielle Bruns wrote:
> > 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
> >
>
>
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