[MLB-WIRELESS] New world record for wifi link (125 Miles).

[Lee Moyle]

I have a 10' mesh, a 6' solid and a 5' solid available for use.
probably easier with the 2 solid dishes which are both prime focus and
easier to transport.
i think the 10' has about 35db gain or so
so the others about 30db and 28db at a guess
that should do it.
btw the ham record for victoria (digital) is only 143.5km on 2.4g
cheers Lee (node gxq /hrw)

----- Original Message ----- 
From: "Steven Haigh" <netwiz at crc.id.au>
To: <dwsmith at bigpond.net.au>
Cc: <melbwireless at wireless.org.au>
Sent: Friday, August 05, 2005 12:47 AM
Subject: Re: [MLB-WIRELESS] New world record for wifi link (125 Miles).


> I've been looking at the path loss calculations for this, and we're  
> going to need to improve by about 6-7db in RX...
> 
>  From the "radio link" software, it shows a -97db signal at the far  
> end. Even the Senao cards are -91db for 1Mbit. For this to work, we  
> will have to a) get more RX gain, and b) get even more RX gain.
> 
> If the link was dead on -91db RX, then we *might* be able to do it -  
> however there is ZERO margin for conditions.
> 
> Granted, the calcs were for 22db gain antennas, and 2db coax loss. we  
> could in theory gain 2db (less in reality) by strapping the equipment  
> directly to the back of the dishes being used...
> 
> Thoughts on getting those critical extra dbs'? :)
> 
> --
> Steven Haigh
> 
> Email: netwiz at crc.id.au
> Phone: (03) 9308 3238 - 0412 935 897
> 
> 
> 
> 
> On 05/08/2005, at 12:27 AM, David Smith wrote:
> 
> > I've been looking at paths around the state, and there are two  
> > longer paths, both running from Mt Baw Baw.
> >
> > The first is a 223 km path east from Mt Baw Baw to Bald Mount / Mt  
> > Kuark (where?).  Bald Mount is halfway between Orbost and Cann  
> > River, about 15 km north of the highway.  I don't know anything  
> > about Bald Mount - from the look of the map, it could be completely  
> > inaccessible.
> >
> > The second is a 230 km path southwest from Mt Baw Baw across the  
> > water to Mt Sabine in the Otways.  Mt Sabine is inland from Skenes  
> > Creek near Tanybryn.  It looks a bit more hospitable than Bald  
> > Mount and seems to have a fire lookout tower.  Surrounding trees  
> > are another question.
> >
> > In the same area is Mt Cowley (227 km LOS to Mt Baw Baw) where  
> > amateurs regularly set up for Field Days.  Again, I've never been  
> > there so have no idea of the suitability for microwave ops.
> >
> > I'm pretty sure that both ends of the Camels Hump to Mt Buffalo  
> > path are clear and (reasonably) readily accessible.  Don't know  
> > about the other sites though.  Should we stick to that path and  
> > keep the longer ones for the next attempt?  Or should we go for broke?
> >
> > With the pimples that we call mountains in this state, 230km looks  
> > to be about the longest LOS path possible.
> >
> > Regards,
> > Dave.
> >
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> >
> 
> 
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