Archived from groups: alt.internet.wireless (
More info?)
The Hat wrote:
> thanks for your input:
>
> ok, were talking in rural spain, there is n o line of sight from roof to
> roof, i am not there at the moment, so cant confirm if there is literally
> a
> mountain in the way, but have the feeling that there probably is. if you
> imagine a big windy canyon, with 2 buildings 3 miles apart.......
>
> regarding the law, not really sure if there is a power limit, but i guess
> i dont wanna interfere with peoples radios, tv's or mobile phones, etc.
Most of Europe is subject to ETSI regulations, and that gives you a
maximum power of 100mW EIRP, in other words not just the card
power but the aerial again as well (and cable losses). 3 miles is quite
possible within those limits, but only line of sight.
>
> repeaters / reflectors are a bit of a no go really, and i dont have long /
> lat info.
>
> will try and get a little more information about the landscape,
>
> thanks,
>
> Kev
>
>
> "DS" <t.h.i.s.n.t.h.a.t@a.d.e.l.p.h.i.a..n.e.t> wrote in message
> news:Xns94EB90C411C17idispcom@216.65.98.77...
>> "The Hat" <beavis@mistral.co.uk> wrote in
>> news:hVNpc.147$eP6.1@newsfe1-gui.server.ntli.net:
>>
>> > Hi,
>> >
>> > I need to connect 2 or more buildings for the purpose of internet
>> > connection sharing and file exchange. they are within 3 miles of each
>> > other. snag is, they are in the mountains, and there is no line of
>> > sight.
>> >
>> > is this a possibility using wireless products ? at a sensible price ?
>> >
>> > Many Thanks,
>> > Kev
>> >
>> >
>>
>> SOMETIMES, with high-gain directioanl antenna's, for short range, you can
>> do it, most times not.
>>
>> You don't provide enough information to get a good answer. You say
>> there's no line-of-sight, but is that from the ground level at both ends
>> ? From roof to roof ? What we used to do is have a tiny camera on a 20
>> foot mast so we could see what the antenna would actually 'see'.
>>
>> If you have lat and long for the location's, you could do a prop study.
>>
>> Wow!!!! I'm really glad you asked this question.....I did a quick search
>> and found a free rf prop study software. It appears to run on top of M$
>> Mappoint, now if the author.........
>>
>>
http://www.cplus.org/rmw/english1.html , I can't believe this is free...
>>
>>
>> Regards,
>>
>> DS
>>
>>