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The UKHA-ARCHIVE IS CEASING OPERATIONS 31 DEC 2024


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Re: Radio networking...



Brian,

Since it looks like you're doing this for a public body, you should
be aware that you need to keep within 100mW (20dBm) EIRP (effective
isotropic radiant power).

To reach 2km with a good signal level, you are very likely going to
break the UK maximum permited RF power levels unless you buy some
very fancy high gain aerials.

See:

http://www.cisco.com/warp/public/102/wlan/faq-hardware-us-calc.xls

For a good design reference.  (Don't forget to set the regulatory
domain to ETSI)

Other manufacturers may have slightly more sensitive radio kit than
Cisco to improve the range but I doubt if they'll be significantly
different.

Sorry to be a spoil sport.

Regards,

James

--- In ukha_d@xxxxxxx, "Brian G. Reynolds"
<brian.g.reynolds@n...> wrote:
> I have been asked to sort a wireless connection to a School just
under 2km away.
>
> I know some people a while back suggested various kit and supplier,
could someone enlighten me please?
>
> Not sure if a "Pringles" can will look too
professional......
>
> Thanks,
>
> B.



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