Wireless Internet over 3/4 Mile

may0man · 02-06-2005

I'm trying to share my high speed interent between my house, and the the barn on my ranch. These two buildings are about 3/4 mile apart with no direct line of sight. There are quite a few trees between them, but no buildings. Would there be any way to share a highspeed connection?

localhost · 02-06-2005

when you say no direct line of sight, do you mean that there are trees/hills in the way? or what is in the middle.

i would say in your situation it would be difficult to pull it off. you would need directional antennas on both ends and possibly some amplifiers.

that sounds tricky no matter what because even if you tried to bury a cable you would need repeaters between the two locations

RedSector · 02-06-2005

I'd say no with 2.4 GHz equipment. Mabey it would work with 5 GHz (802.11A) equipment. (I'm not sure though)

streaker69 · 02-06-2005

Your only real option with your situation would be to bury fibre. Cat5 ain't gonna cut it.

wrzwaldo · 02-06-2005

You could do it in a fiber pair. We did do a 4 mile shot at 900MHz with a couple of trees in question. But you won't get brodband speed with it.

NetEffects · 02-07-2005

I know of people that have done 1/2 mile. I have also seen discussions of over 1 mile. I did some testing with 8 dBi patch antennas that gave me pretty good signal around 1/2 mile. I would have gone for 14 dBi or higher if I would have installed it.
The one concern I have is your statement about trees. Line of site means you can clearly see the other point. The leaves will kill your signal dead if you try to shoot through them. Can you get above them, like a second story. It's amazing the change in views 8 feet can make.

Hey Mod, can we post links to outside forums? (example of 600meter 802.11b link)

Dutch · 02-07-2005

Quote:

Originally Posted by NetEffects

I know of people that have done 1/2 mile. I have also seen discussions of over 1 mile. I did some testing with 8 dBi patch antennas that gave me pretty good signal around 1/2 mile. I would have gone for 14 dBi or higher if I would have installed it.
The one concern I have is your statement about trees. Line of site means you can clearly see the other point. The leaves will kill your signal dead if you try to shoot through them. Can you get above them, like a second story. It's amazing the change in views 8 feet can make.

Hey Mod, can we post links to outside forums? (example of 600meter 802.11b link)

No matter what may0man does, no matter which a antennas he purchases, he won't get a link, and definitely not a stable link, when there isn't any line of sight. If he wants a link over that distance, he need not just LOS, but RF LOS.

As Thorn would say : Do the math... Calculate the link budget and the fresnel zone. Then decide what kind of antenna, mast, demolition of buildings, pruning of trees, etc that is necessary to ensure a clear fresnel zone.

As for posting a link to other sites.. No problem, as long as the link is relevant for the discussion in the thread.

Dutch

Starpoint · 02-07-2005

Quote:

Originally Posted by may0man

I'm trying to share my high speed interent between my house, and the the barn on my ranch. These two buildings are about 3/4 mile apart with no direct line of sight. There are quite a few trees between them, but no buildings. Would there be any way to share a highspeed connection?

I would contact a company called Transistion Networks.
We build a product for them that allows 10/100 cat5 to convert to fibre, then go for 1.9 miles then put a converter back and reverse it to cat5.

(we make alot of other things for them as well)

PS..you will still need to bury the fibre

NetEffects · 02-08-2005

Quote:

Originally Posted by Dutch

No matter what may0man does, no matter which a antennas he purchases, he won't get a link, and definitely not a stable link, when there isn't any line of sight. If he wants a link over that distance, he need not just LOS, but RF LOS.
Dutch

I ddn't mean to suggest it would work through trees, sorry if I added confusion. I was just thinking if there are trees, look for a spot that is higher than the trees. If your only path is through trees or buildings over that distance, forget it, it's over.
Doing the math is a critical step, as Dutch noted. But if you can afford it, before you actually buy all the material, start with the antennas and AP. Then set up a signal test to see if the math works out. It also helps with the one thing math wont tell you, any other signals and noise that might be present.

Here is a link to an example installation for point to point over a 600m distance.

http://www.dslreports.com/forum/remark,8554232

02-06-2005	#1 (permalink)
may0man Registered Member Join Date: Feb 2005 Posts: 1	Wireless Internet over 3/4 Mile I'm trying to share my high speed interent between my house, and the the barn on my ranch. These two buildings are about 3/4 mile apart with no direct line of sight. There are quite a few trees between them, but no buildings. Would there be any way to share a highspeed connection?

02-06-2005	#2 (permalink)
localhost I'm always at 127.0.0.1 Join Date: Mar 2004 Posts: 26	when you say no direct line of sight, do you mean that there are trees/hills in the way? or what is in the middle. i would say in your situation it would be difficult to pull it off. you would need directional antennas on both ends and possibly some amplifiers. that sounds tricky no matter what because even if you tried to bury a cable you would need repeaters between the two locations __________________ Secure-Wifi.net - personalized statistics and resources. http://secure-wifi.net/userstats/1.jpg

02-06-2005	#3 (permalink)
RedSector Registered Member Join Date: Nov 2004 Location: Illinois Posts: 673	I'd say no with 2.4 GHz equipment. Mabey it would work with 5 GHz (802.11A) equipment. (I'm not sure though) __________________ Get thine ass into the Church The Church of Wifi

02-06-2005	#4 (permalink)
streaker69 Psychic Amish Stumbler Join Date: Jul 2004 Location: Virginville, BlueBall, Bird In Hand, Intercourse, Paradise, PA Posts: 11,798	Your only real option with your situation would be to bury fibre. Cat5 ain't gonna cut it. __________________ "One of these days, I'm going to cut you to pieces." If you're offended by this post, please feel free to report it to one of the many helpful moderators of this forum. Thank you.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

02-06-2005	#5 (permalink)
wrzwaldo I amuse you? Join Date: Dec 2003 Posts: 9,127	You could do it in a fiber pair. We did do a 4 mile shot at 900MHz with a couple of trees in question. But you won't get brodband speed with it.

02-07-2005	#6 (permalink)
NetEffects Registered Member Join Date: Feb 2005 Location: Michigan Posts: 16	I know of people that have done 1/2 mile. I have also seen discussions of over 1 mile. I did some testing with 8 dBi patch antennas that gave me pretty good signal around 1/2 mile. I would have gone for 14 dBi or higher if I would have installed it. The one concern I have is your statement about trees. Line of site means you can clearly see the other point. The leaves will kill your signal dead if you try to shoot through them. Can you get above them, like a second story. It's amazing the change in views 8 feet can make. Hey Mod, can we post links to outside forums? (example of 600meter 802.11b link)