A Cantenna is a homemade antenna using a coffee can, or even a Pringles can. These are typically called “WaveGuide” antennae since they guide/focus the waves.
This section will be expanded once I take some time to complete it. In the meantime, there are some pictures available here: https://rodent.za.net/files/cantenna
Since MyWireless generally uses the same frequency as 802.11 kit, any 802.11 antenna design should suffice.
A lot of marvelous, yet highly experimental information about CanTennae is available at http://www.seattlewireless.net/index.cgi/DirectionalAntenna
This is what my Cantenna design was based off.
The best kind of antenna for MyWireless is a *directional* antenna, since it allows you to improve your return signal to the base station.
Cabling:
Cabling from your antenna is very important. You can calculate how much signall loss there is in the cable by using this calculator http://www.timesmicrowave.com/cgi-bin/calculate.pl
LMR195 seems to be used quite often, but over a 15m stretch of LMR195 you will lose 9db. LMR400 is more expensive, but over the same length will only lose 3dB