RE: 2.4Ghz 40Mhz 802.11n wifi and Apple Macbook

[Steve Mikulasik <Steve.Mikulasik () civeo com>]

Is this one of those requirements that gets ignored? I have seen plenty of 40Mhz SSIDs polluting spectrum in areas with 
lots of overlapping APs. 

Steve Mikulasik

-----Original Message-----
From: NANOG [mailto:nanog-bounces () nanog org] On Behalf Of Ricky Beam
Sent: Monday, June 15, 2015 2:58 PM
To: Brielle Bruns; Colton Conor
Cc: NANOG
Subject: Re: 2.4Ghz 40Mhz 802.11n wifi and Apple Macbook

On Mon, 15 Jun 2015 14:17:52 -0400, Colton Conor <colton.conor () gmail com>
wrote:
> So assuming you live in a decent sized house/lot, should you really 
> care about squatting all over the entire band? I mean sure I can see 
> my neighbors wifi signals...

*DING* There's your problem. It doesn't matter if you can link and pass traffic. If **ANY** other signal is detected in 
the extended channel, the AP is *REQUIRED* to cease operation @ 40MHz. This is why it is nearly impossible (outside a 
shielded lab) to get 40Mhz mode in the 2.4GHz band.  
SOMETHING is going to step on it -- neighbors, bluetooth, cordless phone, leaky microwave oven, baby monitor, RC toy, 
...