hostap & channel bonding

Jason Straight jason at jeetkunedomaster.net
Sun Nov 17 08:57:41 EST 2002


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On Sunday 17 November 2002 08:44, Christian Zoffoli wrote:
> Jason Straight ha scritto:
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> > On Saturday 16 November 2002 09:41, Christian Zoffoli wrote:
> >>Jouni Malinen ha scritto:
> >> > On Wed, Nov 13, 2002 at 07:02:35PM +0100, Christian Zoffoli wrote:
> >> >>P.S. it seems impossible to change the bitrate on the ap side (forcing
> >> >>it to a lower bitrate 5.5,2,1) ...why ?
> >> >
> >> > Because it has not been implemented yet ;-).
> >>
> >>;-)
> >>
> >>now I'm waiting for filters (to reduce harmonic problems of adjacent
> >>channels) ...i plan to test a configuration with 3 channels in bonding
> >>within the end of the month.
> >>
> >>
> >>Regards,
> >>Christian
> >>
> >>
> >>_______________________________________________
> >>HostAP mailing list
> >>HostAP at shmoo.com
> >>http://lists.shmoo.com/mailman/listinfo/hostap
> >
> > I wouldn't think that would be the problem - how are you going to filter?
>
> after a session with a spectrum analizer hp 8592a i have found some
> unwanted armonics on the sides of the main spectrum. I plain to adopt 3
> band pass filters to attenuate interferences between channels (1-6-11 /
> 2-7-12 / 3-8-13).
>
>  > Is this a long link- outdoor?
>
> it will be ...
>
> > What kinds of antenna are you using?
>
> some andrew 26T-2400 ...and some professional antennas.
>
> Regards,
> Christian

It seems odd that interference between the 2 with a good spread would have 
problems, we have a lot of 802.11 traffic in our small 2 wireless ISP town. 
And are using 1,6,11 at our site even without a real problem, I assume since 
you know how to use an SA that you know what you are doing ;) but I was 
wondering if you need to move your antenna's farther apart (4ft or more), and 
have you tried polarization? Put one vertical and one horizontal?

I'm interested in what you turn up, I've actually been thinking about doing a 
link like that here. We have one 4mi PtP link that doesn't quite clear the 
fresnel zone all the way and with the loss of tree attenuation can only move 
5.5 over it and I'd love to setup another link to get the other 5.5.

You wouldn't happen to work for a WISP yourself?

- -- 
"Having no way as way, having no limitation as limitation."
Bruce Lee

PGP Keys: http://www.JeetKuneDoMaster.net/~junfan/pubkey.asc
Jason Straight <jason at JeetKuneDoMaster.net>
ICQ: 1796276
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