On Tue, 8 Jul 2003, Gerard J. Cerchio wrote:

> Jennifer Donnelly at Cal Com Systems assures me that
> this cell installation will not affect our 802.11b network at
> all.  Some of our transceivers will be within 50 feet of the
> cellular array.

For what it is worth; at those distances, the European GSM masts in the
1800Mhz frequencies do cause the receivers of most cards to blank out due
to overload when used with for example a simple omni. This is visible as
short burst of no receiption and a very sudden low noise with little
signal.

At www.wirelessleiden.net we are currently experimenting with wave guide
antenna's which have a much narrower range around the 2.2Ghz when we are
deploying near a GSM mast:

The whave guide:
        http://www.wirelessleiden.nl/wcl/cgi-bin/moin.cgi/NodeRijnVliet

In the from the two sector GSM antennas, to the back/right the WiFi
antenna:
        
http://webfolder.wleiden.webweaving.org/Rijn%20en%20Vliet%20-%20July%202003/Rijn%20en%20Vliet%20-%20July%202003-Pages/Image18.html

We're not quite done testing/deploying here - so we are not quite sure yet
if this solves the problems.

Dw


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