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Re: Wi-fi problems with channel 12



Ottavio Caruso <ottavio2006-usenet2012%yahoo.com@localhost> writes:

I'm dropping tech-net as this question belongs on -users so far, until
you can quote a spec and tell us what's wrong :-)

> At one of these locations, the most important for me, the chap who
> manages the router changed the AP channel from automatic to 12. Since
> then I can't connect to the router on Netbsd, but I have no problems
> when using Windows 7 (I haven't tried on Linux yet). I can see the AP,
> but the connection times out immediately.

You don't mention where you are, and if 12 is an authorized channel
there.  My memory is a bit fuzzy, but I believe that only 1-11 are
authorized in the US, and there's some notion of a device knowing where
it is.

> There are about 25 APs in the building so I can understand the
> neighbour wanting to use an unused channel and avoid interferences.

Keep in mind that the signals are wider than the channel widths.  One
bit of conventional wisdom is that (in the US, of the authorized
channels) is that 1,6,11 is the only set of 3 disjoint channels.

> Is this intended behaviour or are there any specific limitations with
> using some channels on Netbsd?

You can read the soruce code, but I would be surprised if this is
hardcoded in NetBSD.  I would think it more likely to be in the
firmware/ROM of the adaptor.

What country are you in?  In what country was the adaptor originally
marketed?  Is channel 12 authorized in either?

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