I've had problems with TC links under 15db SNR.
One end always seems to die out and requires a power cycle. This is
AP-1000 -> RG-1000. ISP-Base -> SR-4100 (satellite)
-bob
----- Original Message -----
From: "Bernd Vetter" <bvetter@colonia-independencia.net>
To: "'Karlnet Mailing List'" <karlnet@WISPNotes.com>
Sent: Tuesday, May 13, 2003 2:16 PM
Subject: RE: [Karlnet] TC on 70km link?
> Hi,
>
> the Horizon correction is 72m, the 0,6 freznel zone radius is 28m, and the
> path loss is 136,91 db @ 70km.
> With the orinoco card, at the given distance, @11mbps/-82db RX
sensitivity,
> you will get 0,69 db of fade margin, using 24dbi grids, and 1,5 db misc
> cable/connector loss on each side, which is way too low. If timing isn't
an
> issue at this distance, you'll have to use amps, to get a reliable
> connection.
> With your 31 dbi dish antennas you'll get 14,69 db at this distance with
the
> above misc loss. This should work.
> Hope, it'll help.
>
> Saludos
> Bernardo
>
>
> > -----Original Message-----
> > From: karlnet-bounces@WISPNotes.com
> > [mailto:karlnet-bounces@WISPNotes.com] On Behalf Of Bruno
> > Lopes F. Cabral
> > Sent: Tuesday, May 13, 2003 2:58 PM
> > To: Karlnet Mailing List
> > Subject: Re: [Karlnet] TC on 70km link?
> >
> >
> > Hi there
> >
> > 1 meter down each 6 km, I was told
> >
> > Cheers
> > !3runo
> >
> > > What is the true curvature of the earth at that distance?
> >
> > > > > My setup: two 1.5 meters solid parabolic 31dBi antennaes, 105m
> > > > > high on one side, 660m on the other, about 70km between the
> > > > > points.
> > _______________________________________________
> > Karlnet mailing list
> > Karlnet@WISPNotes.com
> > http://lists.wispnotes.com/mailman/listinfo/ka> rlnet
> >
> >
>
>
>
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