I know that the wavelength specs (1/4?) determine the length of the "probe" (wire or tubing soldered to inside of the connector) and the distance that is positioned from the rear of the can. It is not clear to me, however, how/if the size of the can effects performance.
When choosing can size, is bigger better? One design uses a heater/air conditioner duct "funnel" attached to the can to increase gain. Would starting with a larger diameter can and eliminating the funnel be a better design?
Of course, maximum gain, given the limitations of the project (no high-tech evaluation test equipment), is the goal. I want to know how can size effects gain.
Another question is about the coax. I know that in order to put this antenna on the roof, I'll need 20 feet, or so, of coax. "Pigtail" (small diameter stuff) isn't sufficient for this task, I know, so the beefy RG-8-type stuff ( *not* RG-8; I just don't remember the 2-plus GHz spec, right now...) is required.
Am I dreaming? Is it possible to capture a signal and run it 20 feet and still have sufficient signal to make it worth my while?
And a basic question about his whole process: Is there a better way to capture a remote WI-Fi signal than to use an external antenna and run it down a coax and plug it into my wireless card in my PowerBook? Another option would be a bridge (which would convert it to wired medium), yes?
Looking for feedback, constructive criticism, and alternative ideas.
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