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Date:      Sat, 21 Mar 2009 20:27:44 +0700
From:      Outback Dingo <outbackdingo@gmail.com>
To:        Polytropon <freebsd@edvax.de>
Cc:        freebsd-questions@freebsd.org, Modulok <modulok@gmail.com>
Subject:   Re: Creating a 10km wireless bridge...pointers?
Message-ID:  <5635aa0d0903210627l723f6efdw9e91e8d4b4888305@mail.gmail.com>
In-Reply-To: <20090321141648.49c453af.freebsd@edvax.de>
References:  <64c038660903210543v1cebe63fr4424bebc58076e4a@mail.gmail.com> <20090321141648.49c453af.freebsd@edvax.de>

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Just take some advice from the owner of a WISP... and a FreeBSD user.

if your only trying to get connectivity a less then 500 USD this is easily
accomplished

buy a couple high end radios with built in antennas, Ubiquiti PowerStations
come to mind, place 1 at each end of the link
if line of sight is close to good, your done. Ive done numerous long
distance links, longest being 17km in extreme terrain

spend the money, have 0 headaches, itll even do PPPoE for the DSL link, if
you want to add a BSD box fine, but in this instance its really not needed.

On Sat, Mar 21, 2009 at 8:16 PM, Polytropon <freebsd@edvax.de> wrote:

> On Sat, 21 Mar 2009 06:43:01 -0600, Modulok <modulok@gmail.com> wrote:
> > Something
> > like:
> >
> > LAN<->BSDrouter<->modem<->Antenna<~~air~~>Antenna<->modem<->DSL
>
> Your BSD router would act as a gateway, eventually using
> functions like "IPDIVERT and DHCPd via RF". It would then
> serve as an AP, put in simple words. This should be achievable
> mostly by means of the base OS.
>
> For the RF transmission part, you will need antennas (yag=ED
> type ideally) with a good signal gain and narrow radiation.
> It's possible to build them, but I'm sure they're sold, too.
> Optionally, a power amplifier (PA) may be added on both
> ends to strengthen the signal if it's too low.
>
> In case you have something in the way that hinders a direct
> view from your desired AP to the client (e. g. a mountain),
> things get a bit more complicated, a repeater would be needed.
> But as long as you can see it, you can connect it. :-)
>
> Coming back to your suggestion, I'd express it as follows:
>
>                                    ~ > ~ >
>                                 V           V
>              +--------------+   |  < ~ < ~  |
>              | wireless NIC |---+           |
> DSL in        +--- ^ -- v ---+               |   +--------------+
> the wall--*-->| ethernet NIC |               +---| wireless NIC |
> at your       +--------------+                   +--------------+
> site        your FreeBSD "AP" box                  client's box
>
> * insert modem if needed
>
> I'm not sure why wou want to employ a modem on the client's
> site. If it's only about Internet access, it's usable via the
> WLAN component already. If you want to handle IP telephony and
> multiple clients... well, more complicated, the client's all in
> one modem / spliiter / router / DHCP server / firewall / whatnot
> would need to connect to the RF "bridge", I'm not sure if this
> is possible even if the modem offers WLAN antennas.
>
>
>
> > Tips? References? Advice?
>
> Sorry, no. :-) Just some basic thoughts from a radio amateur and
> FreeBSD user.
>
>
>
> --
> Polytropon
> >From Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...
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