to all wifi experts there
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URL: https://forums.webwiz.net/forum_posts.asp?TID=17339
Printed Date: 30 March 2026 at 9:50pm
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Topic: to all wifi experts there
Posted By: the boss
Subject: to all wifi experts there
Date Posted: 24 November 2005 at 2:45pm
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how can i calculate wifi coverage area based on the antenna dbi gains?? ------------- http://www.web2messenger.com/theboss"> 
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Replies:
Posted By: michael
Date Posted: 25 November 2005 at 10:54am
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This is very hard to calculate depending on obstacles you might have. Consider the heigth of the antenna, when having to reach a floor above and below it. The diagonal way through walls depends on the angle which in turn is dictated by the thickness of the wall and ceiling as well as the angle of "penetration" itself. Not counting other obstacles like furniture. Microwaves and other electric devices furthermmore decrease the field especially for b/g routers.
If you had a big warehouse though there might be a formula that could give you a ballpark number. I find it easier to load a wifi tester app on your pocket pc or smart phone, walk around the office and it records the strenght of field everywhere. ------------- http://baumannphoto.com" rel="nofollow - Blog | http://mpgtracker.com" rel="nofollow - MPG Tracker |
Posted By: dpyers
Date Posted: 25 November 2005 at 10:56pm
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Staples and computer stores sell wifi locators for about US $20. Most
of them have signal strength indicators. Bot ;ole Michael said, the
material between you and the antenna is the most important factor. I have a room in my house that has foil-backed insulation in the walls. signal strength on one side of the wall is Excellent. On the other side of the wall it's Very Poor. ------------- 
Lead me not into temptation... I know the short cut, follow me. |
Posted By: michael
Date Posted: 25 November 2005 at 11:18pm
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I tired a few routers and best luck I got so far with the D-Link MIMO Router. On normal G I get 54MBit/s at a different floor two rooms over. ------------- http://baumannphoto.com" rel="nofollow - Blog | http://mpgtracker.com" rel="nofollow - MPG Tracker |
Posted By: the boss
Date Posted: 26 November 2005 at 2:09pm
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well i need to cover an area of 2KM in open space and line of sight is available.. so obstacles are really not a matter. the minimum available rate should be 1Mpbs. it will be a point to multi-point network for sharing internet ------------- http://www.web2messenger.com/theboss">
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Posted By: michael
Date Posted: 26 November 2005 at 8:38pm
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I would get a set of directional antennas for that. ------------- http://baumannphoto.com" rel="nofollow - Blog | http://mpgtracker.com" rel="nofollow - MPG Tracker |
Posted By: the boss
Date Posted: 27 November 2005 at 3:03am
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yes but directionals are for use between point A to Point B.. not from one point to many !! ------------- http://www.web2messenger.com/theboss">
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Posted By: dpyers
Date Posted: 27 November 2005 at 12:20pm
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I think my netgear G+ router had a range of 800 meters. The DLink G+
stuff is supposed to be faster and have a little more range but even
with a repeater, I don't see it covering 2 square Km. You might have to
look at a higher-end router - like one of the Cisco wifi's.
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Lead me not into temptation... I know the short cut, follow me. |
Posted By: ub3rl337ch3ch
Date Posted: 27 November 2005 at 5:17pm
| or you could piggyback a few normal ones... |
Posted By: the boss
Date Posted: 29 November 2005 at 4:20am
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how abt 1W booster and lot of antenna.. my problem is that there is no electric power available so cant do the piggyback / adhoc setup ------------- http://www.web2messenger.com/theboss">
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Posted By: dpyers
Date Posted: 29 November 2005 at 5:16pm
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You might want to cjeck out the wifi forums at broadbandreports.com.
Lots of expertise there. But I've got a feeling you may need something
more than the typical SOHO router.
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Lead me not into temptation... I know the short cut, follow me. |
Posted By: the boss
Date Posted: 10 December 2005 at 9:35am
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yes we are looking into professional routers like corecess, paradyne, Avayna and proxim ------------- http://www.web2messenger.com/theboss">
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