-> That's impressive! 

-> I have been promised a slightly damaged sattelite dish by one of the local
-> installers, apparently one edge has been slightly dented making it unsalable
-> for a new installation, but he's in no hurry to recover it from his boneyard so
-> i must be patient. In the mean time i have been considering a parabolic
-> reflector of simply bent sheet metal (or flyscreen).

If the "dish" isin't perfect you will loose a great deal of Gain for
the antenna. Althouhg for closer distances almost anything that will
reflect the signal in the direction wanted can work. I saw one project
using a Chineese Vegtable Spoon.

-> It certainly looks like almost anything will work with waveguide tubes. Perhaps
-> it is just my construction, but for all the effort involved it seems anyone can
-> stick a wire in any tin can and have it work about as well as my more carefully
-> engineered efforts. Perhaps there is a precision threshold i have yet to
-> breach. On the other hand i have not tried the stew can myself so have no idea

Actauly it is a very precision thing. The formulas for the Wave guide
antenna take into account all of the dimensions of the Can. The
placement of the Connector with the stub antenna is alos very inportant.
As is the length of the Stub antenna. Whose length varies a little
with the dimensions of the can and the length should be correct down
to 1/100th of an inch. As an example the dinension for the Anntenna for
the Nalleys can antenna was 1.21 Inches. One cuts a little long and fine
tunes with a small file using actual signal strength readings..

 Can size is quite important and the Nalley's can "Size" gives the
highest gain according to the info I found on the Internet. Do a Google
search for "WiFi Wave guide Antenna", Some have played with a Pringles
can and while they work they have the Lowest gain because the size is a
little small. But when you are out War Chalking they don't attract as
much attention :-)  :-)
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