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Subject: Cantenna


Author:
Colonel Angus
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Date Posted: 22:49:15 01/05/06 Thu
In reply to: Controlled Devices 's message, "Uncapping Cable Modems" on 04:58:22 01/05/06 Thu

A cantenna is a directional waveguide antenna for long-range Wi-Fi (compare hi-fi) used to increase the range of (or snoop on) a wireless network. Originally built using a Pringles potato chip can, a cantenna can be constructed quickly, easily, and inexpensively using readily obtained materials:

Four small nuts/bolts;
A short length of medium-gauge wire;
A tin can roughly 8 cm (3.66 inches) in diameter (the longer the better); and
An N-Female chassis mount connector, available at any electronic supply store.
An optimal design will use a tin can longer than a Pringles can. Instructions for constructing and connecting a cantenna can be found at Turnpoint.net.

While cantennas are useful for extending a local area network (LAN), the tiny design makes them ideal for mobile applications such as wardriving. The design of the cantenna is so simple that it is often the first antenna WiFi experimenters learn to build. Even the Secret Service has taken an interest in the cantenna.

http://www.cantenna.com/

http://www.turnpoint.net/wireless/cantennahowto.html
http://www.saunalahti.fi/elepal/antenna2.html
http://www.oreillynet.com/pub/wlg/448
http://www.binarywolf.com/249/

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Subject Author Date
Thuraya/GPS Maritime Active AntennaColonel Angus23:33:34 01/05/06 Thu


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