bjs555 <aaa@bbb.com> wrote:
> I've done some more testing. I don't see any difference by using one
> can instead of two. That is, shortening the length to 6 inches. Easier
> to aim. Maybe there are differences on the order of a couple of dB
> that I don't see in my ramshackle setup.

That seems to be true for the USB dongle in a can as well.
Two cans gives marginally better gain, but it is also much more
directional. I thought that was good, but in use, the friend that I gave
it to found it too hard to keep pointed at the WAP (using a photo tripod),
and preferred a single larger diameter can.
http://www.rahul.net/dold/clarence/u...42-800x600.jpg

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Clarence A Dold - Hidden Valley (Lake County) CA USA 38.8,-122.5