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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>
>
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