On Sep 6, 2:53 pm, Jeff Liebermann <je...@cruzio.com> wrote:
> Knight <petelar...@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/63d3438fe861...>
> 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 je...@cruzio.com
> 150 Felker St #D http://www.LearnByDestroying.com
> Santa Cruz CA 95060http://802.11junk.com
> Skype: JeffLiebermann AE6KS 831-336-2558

http://www.lazygranch.com/images/wifi/wifi_bq_1.jpg
http://www.lazygranch.com/images/wifi/wifi_bq_2.jpg

Not the greatest looking construction, but it works. Loops are the
same length as the diamond.