Long range Line of sight networking

hi
well i got a problem that i need a wireless long range solution of trendnet and i think a lot on what kind of solution will work after much think i decide to deploy a Tew-430APB its a indoor access point and connecting a 24DBI OUTDOOR antenna oohhh i forgot to tell that the distance is 4.85km clear line of soght (LOS) can any body tell me that how much speed i can get acctually my applications are critical and i need a high bandwitdh of 12-18 MBPS and i can`t afford expancive product and i know thare are many cool item are avaliable in market like smart bridge so dont try to tell me on outdoor bridges so i need a help guys just tell me will my link works if so than how much speed i can get thanks.

 

you want 12-18 mbps over 5km?

how much is "expensive" cuz it's gonna be

 

5km might be a stretch, but you can google 'cantenna' and check this out.

There's even a review on a commercial model here on NotebookReview.com.

 

WiMax 30 mile point to point 15 miles to mobile target.

 

You beat me to it!

I've been wanting to make one of these since I read about it. I think it would be overkill transmitting from the house to the garage only 20 feet away. Fun but overkill...

 

well acctually my range is 1700$ but as i ask you before that if i use indoor access point then would my link will establish and i told you before that i wish to use trendnet why dont you people go to there site www.trendnet.com model #tew-430apb ok

 

I didn't think that people in Abu Dhabi knew what the word "expensive" was
Okay, seriously .. that distance is easily doable by using a yagi type of antenna at both ends (transmit and receive) together with standard wireless adapters and access points IF you have a *CLEAR* line of sight over that distance. In fact if you do have CLEAR los, you may only need the yagi on one end.

 

Though I'm sure some Access Points will work better than others, we're talking mostly about antenna's here. As long as the access point has a detachable/replacable antenna, as it appears that one does, it should work as well as any other (in theory).

 

well let me tell you some link that i have deploy smartbridge airHaul Nexus over 34.5km and i get a speed about 20MBps on PTP mode point to point using a 24dbi antenna it cost me around 8000$ its a good thing to deploy but i am asking only that what if i use indoor access point with 500mw AMP on 24dbi antenna how much speed i can get this is a simple question acctually i am using a indoor access point for the frist time let me tell you that there are 70 PC .Bulding A Has 40 pcs & building B has 30 pcs and they all use a gaming so i was hoping to get answer that how much speed will i get and how much signal quality i get thanks

 

I honestly cannot comment on speed because I have never done this before, though I have wanted to. Anyway, as for cost, I know you can use satellite dishes for long distance LOS. I have a whole big pdf on the subject if you would like...
Also, from what I understand, if set-up right, and not too far for the equipment, there should be no speed lost. It would probably be good to use like 802.11n or double 802.11G or something so that if speed is lost, the proportion that will be lost is less...(not too sure if I explained it well) look at it like this, if you loose half your speed w/ 802.11G you have 24 Mbps, and if you loose half w/ 108 Mbps, you have 54.
As for the antenna, I reccomend a yagi type or a parobolic grid, although I think the yagi may be better. (I think that the yagi needs you to be more precise when aiming the antennas, but you get less of your signal beeing lost. And vice versa on the parabolic dish.)
Also, there's tons other factors you need to take into account, like the topography of the terrain, curvature of the earth, and lots of math you need to do. That pdf I have explains this a lot better than I can off the top of my head.

Also, even though you may be getting the full 54 Mbps for example, it may not actually be running that fast. This would be because bridges and repeaters function at half duplex, not full duplex like a switch or a router. However, I am not too sure on this for wireless. I am just learning about duplexing and such in my IT class now.
Anyway, what the half duplexing means, is that, the bandwidth must be split up among the computers accessing the "media" at the time.

Anyway, don't pay too much attention to that last part about duplexing because I'm not too clear on the subject.

Also, you will need either two wireless bridges on each end, or two wireless AP's at each end that can be switched onto wireless repeater or bridge mode. A good wireless AP that will accomplish this quite well is the Linksys WAP54G. (I have mine set-up on wireless repeater mode now) Anyway, it would be more efficient to have it set-up as a wireless bridge, one at each end, then a switch hooked up on each bridge to branch off to the other computers. However, if the computers at each end need to be connected via wireless, then it would probably be fine to set one AP in plain ole' wireless AP mode, then the other at the other end in wireless repeater mode.


As for your particular AP, it looks like it should work, but you would have to go into the firmware settings and look around youself. The reason I reccomended the linksys AP, is because there is all kinds of 3rd party firmware for it that lets you do some pretty sweet things to it, like boost the output power and such.

Overall, I do feel that it is feasible to get full strength (or close to it) signal at 5 km. I've just never had the long distance LOS to test it out, the closest I got was a VERY ****py coke-can cantenna that gave me full strength at a quater mile.

Lol, sorry to kind of jump around so much...

 

well thanks for such a cool informations guys well the good news is that i deply a network yesterday using a Trendnet TEW-430APB with a repotec outdoor AMP 500mw using a LMR-400 cable on 24DBi grid Antenna each side and i get a 40% signal and 75% link quality and my speed is 12 to 18 MBPS i am very happy guys that my link work using a indoor Access Point ohhhh i forgot to tell that my amp TX output rate is 30dbm and access point Tx output rate is 15dbm.

 

That's awesome. I've always wanted to set-up a long distance wifi link like that, but never have had the reason or LOS to do so, lol.
When I was reading your last post, I was thinking "...whoa...amplified to 500mw....FCC might have a problem w/ that, lol" But then I realized your in Abu Dahbi...

 

fcc are a big suckers in whole world you know that but tha main thing is that i have deploy the link and i am gitting very low latancy about 50MS and by the way thanks for the information guys and now i am planing to deploy a 75Km link in Pakistan (Lahore) to (Guhrawala) and i am planing to install smart bridges thay can span upto 80 km on repeter mode thats means 1 pair can go upto 40 km

 

I'd reconsider the choice of access points, too:

Also consider that repeater mode has less than half the troughput and more than twice the latency. Good Luck...

 

jeg har problemer i network