Creating a 10km wireless bridge...pointers?

[Wojciech Puchar]

>>
>> 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.

Do not use builtin cards for such links unless you like to keep computer 
outside.

long RF cables=LARGE signal loss.

There are LOT of external radiobridges that are designed to be placed 
outside so it's connected to antenna almost directly.