What is the true curvature of the earth at that distance?
> -----Original Message-----
> From: karlnet-bounces@WISPNotes.com
[mailto:karlnet-bounces@WISPNotes.com]
> On Behalf Of Tony Morella
> Sent: Tuesday, May 13, 2003 2:10 PM
> To: 'Karlnet Mailing List'
> Subject: RE: [Karlnet] TC on 70km link?
>
> Lopes
>
> This is exactly what TurboCell will accomplish for you, it will fix
the
> timing issue. Please feel free to contact me off list for more info,
> more info can be found on our website.
>
> Sincerely, Tony Morella
> Demarc Technology Group, A Wireless Solution Provider
> Office: 908-996-7995 Cell: 908-246-9170 Fax: 908-847-0202
> http://www.demarctech.com
>
>
>
> > -----Original Message-----
> > From: karlnet-bounces@WISPNotes.com
> > [mailto:karlnet-bounces@WISPNotes.com] On Behalf Of Bruno
> > Lopes F. Cabral
> > Sent: Tuesday, May 13, 2003 1:27 PM
> > To: Karlnet@WISPNotes.com
> > Subject: [Karlnet] TC on 70km link?
> >
> >
> > Hi there
> >
> > this is my first post to this list, so please be gentle
> >
> > I dig all the list archives and didn't find any thread on
> > this subject. My question is how TC would behave on a 70km
> > link, because 802.11b has timing issues that limit it to
> > about 35km (*)
> >
> > Does any of you have a working long link like this one?
> >
> > My setup: two 1.5 meters solid parabolic 31dBi antennaes,
> > 105m high on one side, 660m on the other, about 70km
> > between the points. each orinoco card is connected to
> > a pigtail and directly to each antennae cable (no cable
> > long runs to loose signal)
> >
> > two 802.11b machines (running linux in ad-hoc mode
> > with orinoco cards) gave a poor throughput so I borrowed
> > two WP-II (PtP) and they gave a lot better throughput but
> > not perfect, yet, so my wonders in the use of Karlnet's TC.
> >
> > I plan to test this using two RG1x00 with Satelite firmwares
> > in PtP mode. I'm aware that the RG1x00 will have it's
> > bottleneck at 3Mb max (because of lack of processor power)
> > but I need to convince ppl here that it works before spend
> > several hundred dollars on AP1000 or WPBASE+ with 2 cards
> > (RG1x00 is cheap and easily found here in Brazil)
> >
> > Any thoughts on this would be highly apreciated
> >
> > Cheers
> > !3runoT
> >
> > (*) 802.11b expects that each sent packet receive its
> > "ack" within a certain time that, calculated based on
> > light speed, translates to about 35km. It's the "DTIME".
> > With a link longer than that, the transmitter will start
> > retransmitting packets which could collide with the previous
> > transmitted acks and so on until the link becames nearly unusable.
> >
> > _______________________________________________
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> > Karlnet@WISPNotes.com
> > http://lists.wispnotes.com/mailman/listinfo/ka> rlnet
> >
> >
>
>
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