willay
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Registered: 10th Nov 02
Location: Roydon, Essex
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So I'm currently working my way towards linking up two properties within the same area using WIFI.
The two sites in question are approximately 720 meters (as the crow flies) apart, buildings are where I live and my friends farm. Using the help of a forklift (  ) I was able to get as high as one of the sheds on my friends farm and can clearly see the roof of my house. So That should be the line of sight sorted.
I'm going to be using a mix of linux boxes equipped with Alfa AWUS036H usb wireless adapters which are known for their power when using with the correct drivers and a couple of these badboys (hopefully)
Now naturally I'd like to spend as little as possible on gear until I can prove it works, I'm trying to get over a few problems such as access to the roofs of said buildings as both of the buildings have fragile roofs which I do not wish to walk on. One building has a pole mounted to the side already for a old weather station which I could access using the forklift but the other building will need a cherry picker or some masssssssssive balls.
I'm quite concerned about the whole line of sight theory, its easy enough to point the antennas in the 'rough' direction of the other but how exact do I need to be? and is there anything out there to aid me with lining them up? If I was to go through with the cherry picker idea I'd have limited access (rental) so going back up to move the dish 3 days after installation would be costly!
edit - I've also done a wireless survey using my tablet, I used the Wigle wireless app for my android to do this! Again roughly walking as the crow flies through the fields I was able to find around 13 AP's using various channels to broadcast their SSID, I plan to use a channel thats unused within that survey area to avoid as much interference as possible.
Any thoughts, questions on this would be appreciated.
[Edited on 30-03-2012 by willay]
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Sam
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Registered: 24th Dec 99
Location: West Midlands
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If you don't mind me asking, why can't your friend get his own broadband?
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willay
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Location: Roydon, Essex
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he has, infact he has 3 adsl connections on site, I have 3 adsl lines here too and access to two others.
However he gets 1.5mb sync and I get 6.5-7mb
But its not just about broadband.
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Sam
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OK. It certainly sounds like an interesting (if ambitious) project you've got here!
My only concern is that like anything that uses wireless transmissions, you are likely to come across issues with interference and signal strength, especially as your measurements equate to about just under half a mile in distance! 
Would it not be cheaper/easier to do this over ethernet and using repeaters of some sort?
Sorry I don't want to piss on your bonfire here, I've just not heard of anyone else successfully doing something on a scale like this before!
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willay
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Location: Roydon, Essex
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Interference is a issue, I've gone to the trouble of finding all the APs in the path so I can choose a different channel.
Links of bigger sizes exist and have worked using pringel cans - Total cost of the link would run into £300 for hardware (I've already got one alfa adapter) without the hire of a cherry picker.
Ethernet isn't a great option here as there is a road in the way, and I'm pretty sure once I crossed the road into the next field I'd hit the 100m mark and theres no power nearby for a repeater - not to mention I'd have to talk to land owners/foreigners
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Sam
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Foreigners
I assume him getting BT out to sort out his slow sync issues won't be any cheaper (or is he too far away from the cabinet)?
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willay
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Hes at the end of the line for the exchange, but anyway thats not fun, more fun to link two networks up using your own gear. WILLAYNET bruv
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John
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Registered: 30th Jun 03
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Laser?
If you could get up high when it was dark enough you could use a cheap red one to get it bang on.
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willay
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let me use your laser pen pls john
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Simon
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Registered: 24th Apr 03
Location: Oxfordshire
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Sure there was some guy on here couple years back trying to do something similar?
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pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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Could use a couple of Cisco 1200 aps and single direction annteni
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Nismo
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Registered: 12th Sep 02
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We use
http://www.wifigear.co.uk/ubiquiti-networks?gclid=COL7g8_ykK8CFQQMtAodKkT6zQ
Ubiquiti kit is very good and very cheap. The Nanostations are the best for value, 15km range for £93 quid.
you could use the Ubiquiti Bullet with your own ariels and over that distance wouldn't be a problem. £85 for an access point.
http://www.wifigear.co.uk/ubiquiti-bullet-m5-hp-5ghz-access-pointcpe
[Edited on 31-03-2012 by Nismo]
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Nismo
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Registered: 12th Sep 02
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Oh and we use this in lorry yards and industrial estates with lots of interference and we transmit megapixel cctv across them with no issues what so ever, the tools built into lock them out of other networks aswell.
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Russ
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Registered: 14th Mar 04
Location: Armchair
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Pringles tube, old school
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Ste
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Registered: 5th Mar 03
Location: Taif, Saudi Arabia
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I've got a 22dB omni directional antenna and it will pick out routers from over a mile away.
I would rather lose by a mile because i built my own car, than win by an inch because someone else built it for me.
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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Microwave rx and tx
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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Will only work if you have line of sight though
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willay
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Registered: 10th Nov 02
Location: Roydon, Essex
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quote:
Originally posted by Nismo
We use
http://www.wifigear.co.uk/ubiquiti-networks?gclid=COL7g8_ykK8CFQQMtAodKkT6zQ
Ubiquiti kit is very good and very cheap. The Nanostations are the best for value, 15km range for £93 quid.
you could use the Ubiquiti Bullet with your own ariels and over that distance wouldn't be a problem. £85 for an access point.
http://www.wifigear.co.uk/ubiquiti-bullet-m5-hp-5ghz-access-pointcpe
[Edited on 31-03-2012 by Nismo]
thanks alot thats some great products, might give them a call !
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