> On Tue, 3 Jun 1997, Geoff Blake wrote:
>
> > Just a dumb thought, has anybody thought of hooking the AUI (or UTP) port
> > of an ethernet card to "a radio" and used that for point-to-point links at
> > (say) 10 GHz? I would like to link my Linux box to that of g0pae at
> > ethernet speeds :-).
>
> It's not such a dumb thought. I have heard that some folks are doing just
> that on 10GHz. I have a 10GHz gunnplexor sitting on my shelf waiting, but
> I don't know the first thing about its electrical interface. The other
> problem I've heard about is the directionality of microwaves. It doesn't
> make for a very good LAN :-)
>
Here in the UK, as I am sure that you do in the US too, we use 10.6GHz
upwards for TVRO downlinks and LNB's with a noise figure of 0.7dB and
gains of 50-60 dB are commonplace and quite cheap as are old TVRO
receivers. I know folks are using them in ATV systems at 10GHz.
I believe that it is not too great a step to use this type of kit to
produce a point-to-point link, rather like UTP (10baseT) systems.
Currently, we use a hub/superhub system here in our part of the UK, where
local users connect at 1K2 to a local hub (on 2m). The local hub connects
to the superhub in the same way. In theory, all traffic goes via the hub,
and if necessary, the superhub, which is a regenerative repeater
operating in full duplex. tcp/ip protocols are used.
(again, sorry if this is not strictly within the Linux-hams charter -
although most connected systems are using various versions of Linux -
however, I believe that the dialogue may be of interest to others on the
mail-list.)
73 de Geoff
--
Geoff Blake ergyuf.mdyxuq@mekoprint.dk linux 2.0.29
Chelmsford terhi.victor@logonet.com i586
Intel create faster processors - Microsoft create slower processes