| Forum Home | ||||
| Press F1 | ||||
| Thread ID: 55706 | 2005-03-17 11:20:00 | Long-distance Wireless LAN (2km) with Linksys WRT54G | Chilling_Silence (9) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 335128 | 2005-03-17 11:20:00 | Greetings, I have a friend who lives 1.78KM away from myself (GPS told us so ;)). Im lookin to setup a Wireless link between myself and him using a Linksys WRT54G and some form of Booster Antennae. The ground is mostly flat the whole way, although there are a few trees and two-story buildings in the way. Is it likely to be possible to do this feat? We are basically going to be sharing a lot of files over the coming months and would like to try and get something setup so we dont have to use the internet for everything. Pitfalls? Things to look out for? Advice? Line-of-site is out of the question, unless I stick a 5m antennae into the air from the roof of my house. Regards Chill. |
Chilling_Silence (9) | ||
| 335129 | 2005-03-17 11:53:00 | I should add that Im looking to the sveasoft.com firmware upgrade. If Im using this, will we even need a Booster antennae, with the power increase it provides? Chill. |
Chilling_Silence (9) | ||
| 335130 | 2005-03-17 12:15:00 | Hopefully the sveasoft upgrade will be what you need. Linksys also release their code if you want to have ago yourself, also I have heard there are plenty of linux upgrades too. What are you going to use as your antenna. If going for cheap, build your own cantenna (www.wb8erj.com) |
Rob99 (151) | ||
| 335131 | 2005-03-17 19:54:00 | Was debating if I needed to use a booster antenna or not!? Id seen cantenna.com and it seems interesting enough, but do I need anything more if Im going to be using the sveasoft upgrade and end up maxing the power :D What sorta speeds am I likely to acheive with/without it? Cheers Chill. |
Chilling_Silence (9) | ||
| 335132 | 2005-03-17 23:51:00 | Good luck Chill, but with WiFi frequencies there is no propagation from reflection from the ionosphere etc, it relies on "line of sight". Think of it as a light beam, it has similar properties of travel. It requires line of sight or a big mirror or mirrors (which you get locally with reflections of walls etc, but not over that distance so well) You really need one of these (en.wikipedia.org) |
godfather (25) | ||
| 335133 | 2005-03-18 00:15:00 | Chill, have a look at this; www.pbs.org I have been thinking about the same sort of thing & started a thread about it, some months ago (I can't find it now - but its there somewhere). I have a small hill between my place & my sons; he's about 800m away. Someone suggested a mirror mounted on a haybarn, which has line of sight to both places. But from memory the suggestion was to laser it, so the signal found its mark. It would be a fun project, must try it one day. |
jcr1 (893) | ||
| 335134 | 2005-03-18 01:25:00 | I should add that Im looking to the sveasoft.com firmware upgrade. If Im using this, will we even need a Booster antennae, with the power increase it provides? Chill. Chill, I'm currently doing this and have been through most of the things you are querying. 1) No Line of Sight almost always == No Link 2) Yes you will need external antennae. However you don't need to buy them. My mate and I are using cantennas that we made out of two catfood cans which work relatively well. This is over 700m - although we borrowed some proper Parabolic antennas to test and 3) Speed. We get 3-5mb over our link. It tends to vary, and alignment is very important although we borrowed some proper Parabolic antennas to test and that made it more like 4-7 stable. This is generally enough for us to stream video from my Linux server to his XBOX running XMBC, (although we had to bump up buffering) 4) Sveasoft Firmware or HyperWRT firmware are a must. I recommend Satori Turbo (if you don't have it/can't find it PM me) or Alchemy RC6 (the newest one Talisman is due out soon) but you have to pay for (again PM me for any more details) Ash |
Ash M (46) | ||
| 335135 | 2005-03-18 10:57:00 | I would start with the basic setup, if you need more power go for the firmware upgrade 10 or 20 US I think. Before you spend a couple of hundred on a booster you would want to trial one first(just in case it dosent work). But reading the firmware update information looks as there is a huge power increase avaliable. | Rob99 (151) | ||
| 335136 | 2005-03-18 15:14:00 | 10x as much power IIRC | Chilling_Silence (9) | ||
| 335137 | 2005-03-18 22:55:00 | But of course the difference in effect is logarithmic. 10dB might give a bit over 2 times the range. But it still won't go through obstructions. And it's probably small enough that you won't get any useful diffraction. I forget what frequencies were used for tropo scatter, but that used reasonable powers too. What you need is a high powered industrial laser. Aim it in the line of sight required, and after some time you will have an unobstructed line of sight. Replace it with the radio stuff and bingo.;) |
Graham L (2) | ||
| 1 2 | |||||