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Wireless Can-tenna

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techun said:
so this can send it a mile or two..or more?! man..why don't they make routers with their own cans on them? if u saw routers with ranges in feet..and then one in miles...it might draw someone's attention

They do ...... just not in your local PC store and the ranges are huge as well as the price you will have to pay for the product.
 
Clean_Baldy said:
Its more like using their bandwidth over their router, instead of mine :)
That's the definition of stealing. . .

That's like saying, "I already have a car, but I am going to use my neighbor's car without asking them instead of mine."
 
so what how much does a wall affect distance... like if i had to send a signal through 10 regular housewalls, some glass, little bit of steel, some piping.. i should still get a good signal about half a mile away?
 
If there is any more discussion of theft/illegal activities...this thread will be history, along with a vacation or two from these forums being handed out.

This will be the only warning regarding this.
 
man that is so sweet my friend about a mile away has no internet but a wireless router and he cant afford internet so i think i might build this and let him have some internet speed...
 
LutaWicasa said:
If there is any more discussion of theft/illegal activities...this thread will be history, along with a vacation or two from these forums being handed out.

This will be the only warning regarding this.

hmmm rather than Killing the thread that is informative and offers a walk through on how to build the thing, Why not just delete the offending posts? That way the law abiding users here don't miss out on something that adds to our community.
 
Yes i agree FarEast but there should be no discussion of theft/illegal activities here and he is right about that.

(with that said the best thing to do would be to edit the post and put a warning at the top of the thread in big red font.

i got Eobard to do this for my DvD back up sticky.

Come on guys lets keep it clean.


very cool thread!
 
Omg this is awesome!...Is there a certain disntance the hole needs to be away from the top and bottomn?
 
PLOBBY said:
Omg this is awesome!...Is there a certain disntance the hole needs to be away from the top and bottomn?
Yeah, needs to be a specific ratio between:
a) the 2.4GHz wave and the length of the can (and the diameter)
b) the 2.4GHz wave and the distance from the back of the can to the wire, and height of the wire.

Here's a bookmark dump from when we did the project... we actually broke it down to millimeters, and shaped our own can right to the 2.4GHz wave specs, as mentioned in the first link here:
http://www.saunalahti.fi/elepal/antenna2calc.php
http://www.turnpoint.net/wireless/cantennahowto.html
http://www.seattlewireless.net/index.cgi/BuildingYagiAntennas
http://www.andrewhakman.dhs.org/yagi/
http://www.wwc.edu/~frohro/Airport/Primestar/Primestar.html
http://www.wifi-shootout.com/

If you want a better signal, try using the satelite dish add-on, or using the ribbed pole (iirc it's called a 'driven element'?), which amplifies the signal.. real yagi's have them, and they help out the signal quite a bit.
 
su root said:
Yeah, needs to be a specific ratio between:
a) the 2.4GHz wave and the length of the can (and the diameter)
b) the 2.4GHz wave and the distance from the back of the can to the wire, and height of the wire.

Here's a bookmark dump from when we did the project... we actually broke it down to millimeters, and shaped our own can right to the 2.4GHz wave specs, as mentioned in the first link here:
http://www.saunalahti.fi/elepal/antenna2calc.php
http://www.turnpoint.net/wireless/cantennahowto.html
http://www.seattlewireless.net/index.cgi/BuildingYagiAntennas
http://www.andrewhakman.dhs.org/yagi/
http://www.wwc.edu/~frohro/Airport/Primestar/Primestar.html
http://www.wifi-shootout.com/

If you want a better signal, try using the satelite dish add-on, or using the ribbed pole (iirc it's called a 'driven element'?), which amplifies the signal.. real yagi's have them, and they help out the signal quite a bit.


thanks for the info.
 
su root .... great post...maybe we should get this one stickyed somewhere?
 
Hey guys. I was wondering if this is possible. Well i have this can and just found out it was cardboard on the inside thinking it was aluminum but the bottom of the can is only aluminum. Am i still able to use this? I mean a pringles container is cardboard too or whatever...Any help would be appreciated.
 
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Can't wait for the first cancer reports when people use two satelite dishes. *considers pile of them in garage, looks at neighbors house accross creek*

It feels.....warm....."Hey Mikey! Start getting files off of the network!"
*cooks to death in the way of 2.4 GHz networking signals*
 
Pro*Banshee said:
Can't wait for the first cancer reports when people use two satelite dishes. *considers pile of them in garage, looks at neighbors house accross creek*
Thanks to my brother, I have recently acquired this. I dont know exactly what I'm going to do with it just yet, but I want to do something with wireless ethernet. I just need to find a place to put it...

The scale is a little off on that, but the dish is roughly 12 feet in diameter. That should make aiming the signal a little easier. Of course my parents said they would disown me if I stuck it in their backyard.
 
So you want to go hunting?

*scans sky and looks for flock of birds, boots up laptop then starts to download mp3's*

but with that dish...I'm guessing 20 miles wouldnt be out of the question (thats transmitting). I think there's a practical limit to how much gain a dish can add though, right?
 
For maximum effectiveness, you would need some sort of dish or directional antenna on both ends. I really have no idea what I'm going to do with that dish. Since I don't have a place to put it (I live in an apartment!), there's no good way to use it for anything. What I am more interested in though, is getting 2 direct tv dishes or something like that, and using them. If I stick a little heatsink and fan on my router for cooling, I should be able to double the transmitter power without any serious problems, or so I understand. I think the default for most wireless routers is between 24 and 28 milliwatts. Not a whole heck of a lot of power. That, along with a dish at both ends should be plenty to get a signal the 9 or so miles to my friends house.

On the other hand, I have seen a 1 watt amplifier for 2.4ghz signals. It was only like $300 I think. That, along with some good antennas would send a signal a LONG way. Of course, then I would have a deal with the FCC... That might not be fun.
 
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