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Old 02-20-2009, 10:03 PM
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Default Some dudes wifi antenna

USB WIRELESS WIFI HOTSPOTS Cantenna antenna 802.11g - eBay (item 390032393756 end time Mar-01-09 12:18:26 PST)

Does any one have experience with these home made antenna's? This fellow boasts and boasts. Wonder if that antenna truly does what he says..
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Old 02-20-2009, 10:18 PM
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Quote:
Originally Posted by jimyleg View Post
USB WIRELESS WIFI HOTSPOTS Cantenna antenna 802.11g - eBay (item 390032393756 end time Mar-01-09 12:18:26 PST)

Does any one have experience with these home made antenna's? This fellow boasts and boasts. Wonder if that antenna truly does what he says..
I always wanted to mess around with one of those. I just never had the need to pull in a distant signal. If I had the need or just wanted to try it, with the adapter included, I would give him the 71 beans just to be lazy and not have to make my own. From what I read the theory seems solid. Everything with a grain of salt though, Eh?
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Old 02-20-2009, 10:25 PM
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Originally Posted by davidmc36 View Post
I always wanted to mess around with one of those. I just never had the need to pull in a distant signal. If I had the need or just wanted to try it, with the adapter included, I would give him the 71 beans just to be lazy and not have to make my own. From what I read the theory seems solid. Everything with a grain of salt though, Eh?
Whats a grain of salt worth again? Same here, I'm pondering it over, just so I can give it a try. Feels like a funny reason to buy it though, I do a lot of driven and it would be sweet for the car.
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Old 02-20-2009, 11:06 PM
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These guys built the BlueSniper rifle and intercepted Bluetooth signals from over 1/2 mile away:

How To: Building a BlueSniper Rifle - Part 1 : Introduction
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Old 02-20-2009, 11:14 PM
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Originally Posted by eorange View Post
These guys built the BlueSniper rifle and intercepted Bluetooth signals from over 1/2 mile away:

How To: Building a BlueSniper Rifle - Part 1 : Introduction
WOW, thats just what I would want, having this HUGE looking rifle, aiming at people on the ground from a top a building. Then 10 min later having you told to put down the weapon at gunpoint
http://img.tomshardware.com/us/myima...hoot_small.jpg
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Old 02-20-2009, 11:15 PM
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The can type design for a WiFi antenna is used for professional installations all over. Make sure the connectors are few and tight and the run of cable is as short as possible. LMR-400 type cable at least. -Find on eBay-

www.freeantennas.com

Antennas 2.4GHz

This is what you want for laptops. Especially for generating pcap files..

The crapy thing about newer laptops is that card interface is express and not PCMCIA. Which means you use an older laptop with a type II interface or an expensive PCMCIA to express adapter. This things are stupid. I have no use for express once so ever.
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Last edited by poltergeisty; 02-20-2009 at 11:25 PM..
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Old 02-20-2009, 11:20 PM
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I made a cantenna and it worked pretty good. You could probably buy a better antenna, but you would pay a lot more than it's worth. If you're a piggybacker, like me, you might as well give it a shot. You really can't lose.

I needed more gain than the 8dbI that the Cantenna gave me, so I built a biquad wifi antenna mounted on a satelite dish. It spanks. Seriously. I get +24db* over the stock omni antenna, and more than 12dbi better than the cantenna.

I say try the cantenna first, if you need more gain, then try the dish.

To be fair, I have never tried a commercial directional wifi antenna. I have seen a few, but they're really pricey.


*Tested only with netstumbler.



If you really want to go lo-tek, give this a try. Just print the template, and glue it to some cardstock. I made one of these and picked up 6db using my stock antenna. Still love my dish though. I'm connecting at top speed from over a half mile away.

Last edited by AlmostHandy; 02-20-2009 at 11:24 PM..
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Old 02-20-2009, 11:27 PM
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Quote:
Originally Posted by poltergeisty View Post
The can type design for a WiFi antenna is used for professional installations all over. Make sure the connectors are few and tight and the run of cable is as short as possible. LMR-400 type cable at least. -Find on eBay-

www.freeantennas.com

Antennas 2.4GHz

This is what you want for laptops. Especially for generating pcap files..

The crapy thing about newer laptops is that card interface is express and not PCMCIA. Which means you use an older laptop with a type II interface or an expensive PCMCIA to express adapter. This things are stupid. I have no use for express once so ever.
What would be a good bid on that then? Looks pricey as a 396
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Old 02-20-2009, 11:31 PM
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Quote:
Originally Posted by AlmostHandy View Post


If you really want to go lo-tek, give this a try. Just print the template, and glue it to some cardstock. I made one of these and picked up 6db using my stock antenna. Still love my dish though. I'm connecting at top speed from over a half mile away.

Yep, made two for the router here. Did increase the packet flow and I guess the signal did get a boost comparing results with Netstumbler and the Intel software. Plan on making one big template instead of two. Don't use WiFi that much though, unless I go upstairs or outside, so for the most part remains off.

inSSIDer | MetaGeek
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Old 02-20-2009, 11:49 PM
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Originally Posted by poltergeisty View Post
Don't use WiFi that much though, unless I go upstairs or outside, so for the most part remains off.

inSSIDer | MetaGeek

Ahh See. It's more critical for me since I piggyback for my main connection.
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Old 02-21-2009, 12:01 AM
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Is it encrypted?








Quote:
Originally Posted by jimyleg View Post
What would be a good bid on that then? Looks pricey as a 396
That's waaay too pricey. You could buy a pro version.

..I would just build it.

Wireless Garden - Detail

How to build a tin can waveguide antenna Google works great...


I think all that guy did was put a USB WiFi card in a tin can. Ask for a pic of the inside...
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Last edited by poltergeisty; 02-21-2009 at 12:10 AM..
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Old 02-21-2009, 12:18 AM
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I'm going on vacation in April and need Wifi
I'm thinking of building or buying a nice directional one and scan with inSSIDer to find networks
Looking for spend a max of $30 or so, but it can't be a satellite dish or something huge lol
can anyone recommend anything that they've used that works really well?
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Old 02-21-2009, 07:20 AM
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Quote:
Originally Posted by poltergeisty View Post
The crapy thing about newer laptops is that card interface is express and not PCMCIA. Which means you use an older laptop with a type II interface or an expensive PCMCIA to express adapter. This things are stupid. I have no use for express once so ever.
Yeah, that kinda burns me that they took out a lot of things on newer laptops. The last full size laptop I bought had no comm port, (pretty common now) but it had PCMCIA and PCI Express. What the heck can you actually buy anywhere that goes in the express slot? I haven't done a search lately but when I first got it I couldn't find any products that actually fit in there.
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Old 02-21-2009, 10:11 AM
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Quote:
Originally Posted by jimyleg View Post
Does any one have experience with these home made antenna's? This fellow boasts and boasts. Wonder if that antenna truly does what he says..
To put this thread back on track:

I bought the exact same antenna from the same company as a present for my mother.

Works quite well and in a test against the internal wifi antenna on my laptop, I was impressed. I found a lot of wifi signals that I couldn't see with the internal antenna.

It also gave me the ability to reduce interference from same channel sources using the can's directivity.

As for my experience with the seller, no problems. I would deal with them again.
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Old 02-21-2009, 12:28 PM
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So what's in the can? Is it just a USB WiFi card or did they really wire it up like a real cantenna?
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Old 02-21-2009, 02:13 PM
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The can is simply a waveguide for whatever type of element is inside the can, usually a 1/4 wave vertical stub.
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Old 02-21-2009, 04:44 PM
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Quote:
Originally Posted by poltergeisty View Post
So what's in the can? Is it just a USB WiFi card or did they really wire it up like a real cantenna?
It's a USB wifi dongle with a small vertical antenna poking out the top of the dongle.

Kind of a neat idea. The cable loss is nil since it's USB right to the dongle and the antenna is attached directly to the dongle.
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Old 02-22-2009, 05:17 PM
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JEFA Tech Long Range WiFi to USB Adapter with Antenna Connector

I found this thing, which i'm gonna try with a larger Dlink antenna. If it doesn't do the trick i could by a 2.4 gig directional antenna and give that a shot.. We shall see..
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Old 02-22-2009, 05:27 PM
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also, i have a massive metal bowl that i will use i think... i can stick it right in the center and aim it.
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Old 02-22-2009, 07:00 PM
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Check out Amateurlogic.tv - they did a couple of episodes on building your own.
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