Radio Ethernet Modem Experiences

[Bruce Platt <Bruce () ei3 com>]

This is slightly off-topic.

I'm looking for some information on experiences which you may have with
Radio Ethernet repeaters.  I need to connect several small LANS in separate
buildings which are several thousand feet apart and the cost of installing
fiber is too great.

Data rates will be modest across the entire LAN, so I think I can fit in the
bandwidth limitations of some of the 908 Mhz Spread Spectrum devices, or
even the 2.4 Ghz 802.11b devices (wep!).

Using these as bridges seems like a decent way of accomplishing what I need.

Have any of you used these before?  I can think of some of the gotchas,
like:

1. Oops, another building is in the way, one more unit needed,
2. Signal degradation due to weather,
3. Co-ax length from external antenna to device,
4. Potential security concerns on WEP units, though the data is not greatly
sensitive, 
 ...

However, I can also see some war-driving type risks which I am not competent
to evaluate, though no dhcp servers will run, and all available LAN
addresses will be already occupied.

Since one doesn't know what one doesn't know, I am happy to learn from what
you have to offer.

Thanks and regards,

Bruce
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