Knight <petelarosa@comcast.net> hath wroth:

>What's happening? I thought everything came out great! but the
>BiQuad I just built
>doesn't seem to show any increase in signal strength while using
>Netstumbler!
> I can't see where I went wrong can you?
>http://img.villagephotos.com/p/2003-...728(Large).JPG
>I don't have a piece of wire down in the center stub but I don't think
>that matters do you?
>
>How can the center pin be connected to one side of the element
>and the other side of the element be connected to the board? Seems
>like a short to me.

Yep. Your construction in the photo is totally wrong. It won't work
as shown. The ground ends of the quad elements must be soldered
directly to the ground sleeve of the coax connector, or to short coax
extension. In addition, that looks like a BNC or F connector, which
is a different problem. The center conductor is far too long, the
connector is lossy at 2.4GHz, and it might be a bit flimsy. You'll
find that most construction articles demand an "N" connector or coax
cable extension.

I scribbled a detailed rant on the subject at:
<http://groups.google.com/group/alt.internet.wireless/msg/63d3438fe861bbaa>
It should give a list of biquad construction articles that work, along
with a list of one's similar to yours that will not work.

My favorite are the ones that do not use any connector, such as:
<http://martybugs.net/wireless/biquad/>

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558