ISP may also want to put in an amplifier (cards are very low power, 32 mw)
to have radiated power maximum allowed by Japanese law. Also locate
amplifier at antenna to eliminate cable losses. Each doubling of power (3
dB) will increase distance by about 140%. More customers.
Line of sight means more than just "see". You want an elliptical clear zone
that at the half-way point (1 mile) is 30 feet in all directions (left right
up down). Maybe you locate your yagi on the roof of your building but keep
the antenna line as short as possible and use very low loss line (belden
9913 or better).
IP address must be routed to you as WaveLAN ISA cards do not bridge. ISP
should understand what this means.
You should be able to do everything for less than $2500 US.
-----Original Message-----
From: Frostine RHL <frost@hita.or.jp>
To: linux-net@vger.rutgers.edu <linux-net@vger.rutgers.edu>
Date: Saturday, September 26, 1998 11:59 PM
Subject: Re: WaveLAN application
>In "Re: WaveLAN application",
> ""Jim Flowers" <jflowers@ezo.net>" wrote:
>
>> Do you have line of sight to your ISP? Is your ISP agreeable to your
using
>> a T-1 worth of his bandwidth and adventuresome enough to add the
equipment
>> (not too expensive)? Not much point in doing it if these things are not
>> true.
>
>Yes, quite so!
>When I have introduced WaveLAN into my ISP, They are not familiar to
>radio modem and Nobody has known WaveLAN is supported on Linux.
>Then, they are interested in WaveLAN for an experiment.
>
>> It is actually quite easy. Distance is mostly a matter of antenna
>> selection. A lot depends on your environment (urban, suburban; hills or
>> level; flat reflective or rough trees, etc.) If you give me some
details,
>> I'll give you some pointers.
>
>The access point is on the hillside, I can watch for the building
>on the top of my house. So, I think it is nice environment.
>But I have no idea of the antenna gain.
>
>Thanks.
>
>--
>frostine
>-
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