|taramanju2000 on Nov 23, 2006 at 4:36:57 AM (# 14)|
sir , i am a hardware and network engineer. but ihave a problem with wireless internet and network.so i want to know how to set wireless internet . ihave a dlink router524 and i have bsnl broad connection. so ple, tell me how to set
this by digramme. and how to set router.
pivert on Nov 24, 2006 at 2:16:14 AM (# 15)
Interesting discussion, perhaps these guys have suitable equipment and can help you with us-related regulations. I found a wi-fi extender that goes up to 7km but that might be overkill, perhaps you can setup business as a small isp :-) hth.
MHenke on Nov 27, 2006 at 5:26:22 AM (# 16)
Maybe a bit belated, but I want to add that Ethernet cable length limitations have primarily to do with signal propagation time, frame size and collision detection, not with signal strength.
You can't glue together an Ethernet segment (collision domain) of arbitrary length with some repeaters. It will fail, even with excellent signal strength.
suznorris on Nov 29, 2006 at 3:34:33 PM (# 17)
Hi! This is my first time here, but I definitely need any advice or input I can get from people who know about this stuff!!! I moved to a rural, heavily wooded area last Spring. Love the place, but the only negative when I moved here was the fact that high speed internet was not going to be an option.....and believe me....I called EVERYONE! I was sure cable would be a possibility, as my boyfriend lives a mile and a half down the road and has it, but there aren't many homes out here, so they don't have any plans in the near future to come my way! After I called the cable company relentlessly, phone companies, dish network.....the only option that I found was Hughes Broadband, which was pretty expensive, so I decided that I could live with dial up until something better comes along.......worth it to be in my "dream home"! Well, to make a long story a little longer (thanks for bearing with me!!!), I currently drive an hour to the city to get to work everyday....sucks, but again.......worth it to be here! However, I have been offered a job with a company in the city that will allow me to work from home......yay!!! I figured I would simply get the Hughes satellite installed and things would be golden. I had the installation scheduled, but then postponed it because I came across a local company - Hoosier Broadband - that offered wireless internet in my area and claimed to be better and faster than the satellite option.....called and set up an installation. They are not having luck getting a signal from my roof (with a very steep pitch!) to the closest tower, of about 3 miles away, due to the woods......so the other tower they think we should be good with is about 7-8 miles away. There is a bit of a break in the trees and looks like we are going to have to put in at least a 40-50 ft. pole to attach their gear to. They seem to think that if we can get the pole high enough to clear the trees, we should be good. I am waiting for a call back from the owner of the company....so far, the only people who have been here are the installers.......and, nothing against them....fairly young couple, and he is afraid to get up on the roof......they should have sent someone else out with him....it was their second trip and they knew what the roof was like. I am getting a little apprehensive........I want to believe this can work and really need it to work for my job.......any input from anyone??? I am getting nervous, as I really need something going before the first of the year and I feel like I am going to run out time! Are there any other options? I was going to give the Cingular Network card a whirl and see if that does me any good....I get a decent cell signal, but not always great. Is that enough information for you knowledgeable people to run with!!?? I really do appreciate any help that is out there.......I feel like an idiot trying to research this......no one I talk to knows all that much about it!! Thanks in advance......and thanks for hanging on through my long saga!!!
BikeRepairman on Nov 30, 2006 at 6:07:14 AM (# 18)
40-50Ft is rather a height to put only one antenna in.
6miles is what we did with a LOS connection (Line Of Sight).
Once the antenna is above the trees, every visible tower should/can be connected to.
Wireless signals have troubles getting through things. every object the signal has to travel through causes loss. Since there are nog much other houses around, 'bouncing' is not an option. We also tried that with mixed succes.
It also depnds on what type antenna you use, amplification of the antenna and output power of the accessopint.
I would go for an 23dB, 3Ft di-pole antenna with an opening angle of 15 degrees and an accesspoint with the max allowed power output.
If 200mW is the maximum output allowed, the 23dB antenna will amplify the signal further to ~1.533W, which gives approx. 100mW/degree.
(A 'pin' antenna has to divide the output signal over 360 degrees. A regular outside pin(19dB), would give 3.5mW/degree.)
suznorris on Nov 30, 2006 at 6:43:09 AM (# 19)
Hey......thanks for the response!!! I really appreciate your advice........you definitely sound like you know your stuff!! I am a little technology-challenged, so much of the information is like a foreign language to me! However, I will print out and check with the wireless company and see what happens! Thanks again!!!
BikeRepairman on Nov 30, 2006 at 11:13:53 PM (# 20)
I did some checking and would like to add a little.
1st. ...every visible tower... should read: ...every visible tower you can see when climbing up your antenna...
2nd. it was done with linksys WAP11 (802.11b) accesspoints.
That person got effective 120Kbyte/s up-/download over 8.5km/5.6mi with an accesspoint speed of 2Mbs.
3rd. to get a constant signal, put the speed in the accesspoint to a fixed setting. Better to keep it low than high.
If the data packets are faulty the accesspoint tends to switch to a lower speed, needs to handshake again, and asks for a retransfer of the lost/faulty packet. If some data packets come in good, it switches back to a higher speed (again with handshaking and a retransfer of the last packet.