That is really good info to know.  I will try to confirm this for myself, it may 
change our 
plans for the backbone hardware configuration. Thank you.

I am new to wireless, but not to radios.  Proper grounding and shielding can help with 
interference between radios.  One place that one often finds RF leaks is in the 
connectors of poorly made cables (including pigtails).

A true ground, like a copper pin driven into the ground, can work wonders.  Another 
good 
ground point is the steel beams that are the framework for a building.

I will check out the web sites that you gave.

Ray

On 8 Mar 2004 at 15:31, Michael Mee wrote:

> > [community networks / various configs]
> 
> Our research suggests that two (or more) radio cards on the same band (e.g.
> both 802.11b/g) will halve the throughput due to in box interference (yes,
> even on separate channels), so we've decided two use two separate boxes, one
> for backhaul and another for the AP. We may change this now that we're
> starting to use 802.11a for relays.
> 
> See one example of a Soekris based radio (AP or relay) at
> www.socalfreenet.org/standardap) and the comments at
> http://socalfreenet.org/book/view/65 for some discussion on the interference
> (including links to other newsgroups).
> 
> Fwiw, we're using m0n0wall http://m0n0.ch/wall as a solid simple distro.  It
> doesn't solve all problems, but it sure is easy to configure :-) and to save
> the config.  The big thing missing is a captive portal, so we run that back at
> the center of our network where the DSL connection comes in. We do local dhcp,
> dns caching routing at each access point and they all route back through the
> central gateway where our captive portal is (running RouterOS from
> www.mikrotik.com).
> 
> cheers, michael




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