On Aug 15, 4:30*pm, "Philo" wrote:
"JIMMIE" wrote in message

...

I was talking with some guys this AM about building a quad antenna
using aluminum spreaders. I know that it at least the tips of the
spreaders would have to be made of insulating material such a
fiberglass but the consensus seemed to be that most of the spreaders
should be non-metalic. I was wondering if anyone here had built a quad
with almost all of the spreaders made of metal and what was the
results.

Jimmie

A few years ago, I had a Hygain 3-band quad with aluminum spreaders.

"Strategically placed" insulating rods divided the spreaders into
non-resonant, neutral segments.

Philo

I was thinking about a single band quad. I figured that on a single
band quad the length of the spreader would be either 1.414 or .707
(depending on how you see this) times the lenght of one side of the
quad. I dont think this would be close to being resonant.

Jimmie