.4 mile (643m) wireless link

Post Reply
User avatar
ACalcutt
Vistumbler / TechIdiots Admin
Vistumbler / TechIdiots Admin
Posts: 1159
Joined: Sun Oct 21, 2007 6:50 pm
Location: Rutland, MA
Contact:

.4 mile (643m) wireless link

Post by ACalcutt » Mon Oct 27, 2008 7:48 pm

Hey everyone.

I am thinking about trying to create a wireless link between my house and a friends house (who does not have internet). It is about .4 miles away. We do not have line of site yet but i think with something tall on his end we could get it.

Does anyone have any suggestions? I have never done a long link like this....


Here is the google screenshots of this
roberts_wireless_path.jpg
roberts_wireless_path.jpg (205.56 KiB) Viewed 6257 times
roberts_wireless_terrain.jpg
roberts_wireless_terrain.jpg (83.31 KiB) Viewed 6251 times
I borrowed this directional antenna and aimed it in the general direction for a test.
ant.jpg
ant.jpg (141.1 KiB) Viewed 6251 times
We turned our DD-WRT power up to 150mW and tested the signal strength as far back as we could and the highest signal I got was ~72% in vistumbler (don't have netstumbler...so i'm not sure what that relates to it DB). We also drove down kenwood drive but we were unable to pick up the network.
roberts_wireless_endoflot.jpg
roberts_wireless_endoflot.jpg (52.07 KiB) Viewed 6249 times
Attachments
link.kml
(8.3 KiB) Downloaded 253 times
link.VS1
(5.75 KiB) Downloaded 196 times

Freebe
DIY Contributor
DIY Contributor
Posts: 91
Joined: Fri Oct 17, 2008 2:40 am

Re: .4 mile (643m) wireless link

Post by Freebe » Wed Oct 29, 2008 10:22 am

4Km :lol: Thats NO Distance
Take a Look at this
> http://www.channelpartner.de/2005/august/226583/

Sorry i had to make a No live link but it might be against the Board rules.

So as to your Question on ( I am thinking about trying to create a wireless link between my house and a friends house ) you might have to get rid of some of those Trees. ( could be a Problem )
Let me know how you get on, as i have been using the Alfa 500mw and that pulls OK. But i think you miget do better with a Wlan Dish (45cm )

User avatar
ACalcutt
Vistumbler / TechIdiots Admin
Vistumbler / TechIdiots Admin
Posts: 1159
Joined: Sun Oct 21, 2007 6:50 pm
Location: Rutland, MA
Contact:

Re: .4 mile (643m) wireless link

Post by ACalcutt » Wed Oct 29, 2008 10:51 am

I didn't think distance would be a problem since i've read about links of 22 miles and more.

getting rid of trees probably isn't an option since me or my friend do not own the property. I am also unable to go much higher on my end since it would be against the rules of my building.

What I think we are going to try is doing some type of high pole on my friends end (since he owns the property and can do that type of thing). If I could get line of sight i think it will be possible, but getting that will be the tricky part.

I was also reading about signal though trees. From what I read yesterday it said that each tree would be something like a 10db - 15db loss. So with the amount of trees in between I doubt I would ever get signal unless I can get the line of sight


ps. I am pretty sure you can post links on the forum without modifying them (I know I never specified a rule that links could be posted). If you can't let me know and I will try to change it

Freebe
DIY Contributor
DIY Contributor
Posts: 91
Joined: Fri Oct 17, 2008 2:40 am

Re: .4 mile (643m) wireless link

Post by Freebe » Wed Nov 26, 2008 2:34 pm

@ ACalcutt
Yes OK. i will put some links in if you say its OK, ( din't want to do this without the OK. )
I am about to try some tests next with an Old Sat Dish, will let you know how it goes.
PS. have a freind of mein with a chain saw ( just need the AD ) and a dark night. :-))

mysticvirgo67
Mad Poster / Moderator / Promoter
Mad Poster / Moderator / Promoter
Posts: 424
Joined: Sun Jun 28, 2009 4:52 pm

Re: .4 mile (643m) wireless link

Post by mysticvirgo67 » Sun Jun 28, 2009 6:13 pm

@ ACalcutt... IF you are running a highly directional Yagi , then I am not supprised that you did not detect it on Kenwood.

Trees may cause a small amount of loss if they are in the Frensel zone of the beam.. But if they are in direct path, sure there will be a significant loss. Also expect some loss of signal in heavy rains. Onkly half a mile is no problem.. Biggest hurdle is getting the to directionals pointed squarely at eachother and FIRMLY mounted.. even an inch or two of wind motion can cause a LARGE change in signal...
"People don't need restore. They just need recovery...and the occasional hard boot"
"The maximum acceleration of a PC is limited only by the amount of explosives used"

User avatar
ACalcutt
Vistumbler / TechIdiots Admin
Vistumbler / TechIdiots Admin
Posts: 1159
Joined: Sun Oct 21, 2007 6:50 pm
Location: Rutland, MA
Contact:

Re: .4 mile (643m) wireless link

Post by ACalcutt » Sun Jun 28, 2009 10:35 pm

I've been meaning to post an update to this.

The friend who wants me to do this dropped off some nice equipment for me to mess with last week. (3Com® 11a 54 Mbps Wireless LAN Outdoor Building-to-Building Bridge and 11b/g Access Point). Now I just need to figure out how to configure it properly ;-).
IMG_1145.png
IMG_1145.png (1.4 MiB) Viewed 5607 times
IMG_1147.png
IMG_1147.png (1.49 MiB) Viewed 5607 times
IMG_1149.png
IMG_1149.png (1.54 MiB) Viewed 5607 times

User avatar
ACalcutt
Vistumbler / TechIdiots Admin
Vistumbler / TechIdiots Admin
Posts: 1159
Joined: Sun Oct 21, 2007 6:50 pm
Location: Rutland, MA
Contact:

Re: .4 mile (643m) wireless link

Post by ACalcutt » Sun Jun 28, 2009 10:38 pm

@mysticvirgo67

Thanks for the tips. I have never done anything like this before, so any pointers you have are welcome.

mysticvirgo67
Mad Poster / Moderator / Promoter
Mad Poster / Moderator / Promoter
Posts: 424
Joined: Sun Jun 28, 2009 4:52 pm

Re: .4 mile (643m) wireless link

Post by mysticvirgo67 » Tue Jun 30, 2009 10:58 am

is easy really.. just rember to mind your "ip's" & q's LOL
"People don't need restore. They just need recovery...and the occasional hard boot"
"The maximum acceleration of a PC is limited only by the amount of explosives used"

mysticvirgo67
Mad Poster / Moderator / Promoter
Mad Poster / Moderator / Promoter
Posts: 424
Joined: Sun Jun 28, 2009 4:52 pm

Re: .4 mile (643m) wireless link

Post by mysticvirgo67 » Thu Jul 09, 2009 12:08 am

Ohh. go to www.wirelessforums.org or maybe .net .. I have consulted there.. a really sharp set of cookies...
"People don't need restore. They just need recovery...and the occasional hard boot"
"The maximum acceleration of a PC is limited only by the amount of explosives used"

khat10
Junior Member
Posts: 4
Joined: Sun Aug 02, 2009 8:17 pm

Re: .4 mile (643m) wireless link

Post by khat10 » Sun Aug 02, 2009 8:23 pm

Trees may cause a small amount of loss if they are in the Frensel zone of the beam.. But if they are in direct path, sure there will be a significant loss. Also expect some loss of signal in heavy rains. Onkly half a mile is no problem.. Biggest hurdle is getting the to directionals pointed squarely at each other and FIRMLY mounted.. even an inch or two of wind motion can cause a LARGE change in signal...

khat10
Junior Member
Posts: 4
Joined: Sun Aug 02, 2009 8:17 pm

Re: .4 mile (643m) wireless link

Post by khat10 » Sun Aug 02, 2009 8:24 pm

Trees may cause a small amount of loss if they are in the Frensel zone of the beam.. But if they are in direct path, sure there will be a significant loss. Also expect some loss of signal in heavy rains. Onkly half a mile is no problem.. Biggest hurdle is getting the to directionals pointed squarely at each other and FIRMLY mounted.. even an inch or two of wind motion can cause a LARGE change in signal...

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest