On Sun, 01 Feb 2004 15:24:27 -0700, ps wrote:

I have a photo of an antenna at the Long Marine Labs in Santa Cruz,
California. The view in the photo is to the n-n-west. I'm curious about
what looks like some sort of array of rectangular elements. Is this an
antenna, what type or frequency range? The length of the sides is about
1 meter. I can't post a binary on the newsgroup so the image is
temporarily at this url. http://www.cyberplasm.com/temp/ant_500.jpg

Looks like an array of broadband receiving loops. I would bet it's for
direction finding. The signals from the individual loop antennas are
electronically combined to produce a steerable antenna pattern.

You can buy similar antenna arrays from several commerical suppliers.

The loops look home made, from common plumbing parts, a mix of PVC and
copper pipe.


Jack K8ZOA