[XSCE] Large groups of XO-1 do not work with access points

James Cameron quozl at laptop.org
Thu Feb 6 23:55:06 EST 2014

On Thu, Feb 06, 2014 at 05:16:43PM -0500, Tim Moody wrote:
> James wrote:
> >How to deal with it in the field?  Make a scoring system for each
> >channel, 1, 6, and 11.
> http://wiki.laptop.org/go/Wifi_Connectivity says
> [edit]  Channel
> With 802.11b or 802.11g, use channel 1, 6 or 11 in the US or Canada.
> Use of any other channels will degrade your own wireless signal and
> that of others.
> Similarly, the mesh networking and adhoc network between XO laptops
> is restricted to work only on channels 1, 6 or 11.
> Are you affirming that no channel other than 1, 6, or 11 should be
> used and repudiating other advice to use 9?  (Haiti is not actually
> in the US or Canada.)

No, neither.

I was describing a classroom network design procedure, on the
assumption that channels 1, 6 and 11 would be the channels used by
designer, and reminding the designer that the scoring system should be
repeated for each channel.

If you choose to deploy with interfering channels for some reason,
then extend the procedure to each channel used, and extend the
procedure further to include a score for interfering devices on
adjacent channels.

This does raise the point that the procedure should already be
extended for unintentional interfering devices on channels 2, 3, 4 and
5, but that would make the procedure so difficult as to be unlikely to
be used.

James Cameron

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