[iBook] dual USB iBook wireless upgrade

[jay hill]

I pretty sure I've read that all 802.11n routers slow approx. 20-25% mixed
mode.  You get right at (or slightly over) 100 Mb/s in 802.11n mode when
using the 5 GHz band and 75-85 Mb/s in mixed 802.11/b/g/n mode.

If I recall correctly the speed drop is caused by mixed mode requiring use
of the old 2.4 GHz band.  At 5 GHz the N routers are able to transform 2
channels into a single big data pipe, but if implemented at the 2.4 GHz band
"channel bonding," as its called, interferes with bluetooth, which operates
in the same band.

Still 80Mb/s is pretty decent speed.


On 7/31/07, Malcolm Cornelius <malcolm at fireflyuk.net> wrote:
>
> > I have already ordered an original Airport card from ebay. I hadn't
> > heard
> > about the slow speed of the 802.11b slowing down the network for
> > everything
> > else. It is not as if it was daisy chained or anything. I will let
> > everyone
> > know when I get it set up.
>
> It used to be the case that if anything on the wireless network was
> talking b, the entire network ran at b speed, I seem to recall
> someone saying that some newer routers didn't work this way.
>
> --
> Best wishes
>
> Malcolm Cornelius - The Powerbook Fanatic
> http://www.pbfanatic.co.uk
>
>
>
>
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