Ok, fine. The frequency and size of the U channel are still needed.

Also, how are the U bolts fastening the bits together? I can think of
at least 2 ways to do it with what you've described. 1 - the U bolts
are pinning the element like a staple pins a wire, and 1 or 2 of them
could be used in that case. 2 - the elements are large enough diameter
and the U bolts small enough that the U bolts pass around the boom, and
through holes drilled in the elements. I suspect #2 is unlikely at UHF,
though.

Also what is the orientation of the channel to the elements?

tom
K0TAR

Xanax wrote:

The boom is 3 side square aluminium tubing as used in construction of
Aluminium doors and windows etc..

The elements are attached to the boom but U bolts that are fasened very very
tightly. It's up for about 6 months now and I check it every month and there
isn't any loose ness at all.

Cheers,
Xanax.
"Tom Ring" wrote in message
...

The answer would be probably, but you really need to give more information
such as

o frequency
o boom diameter and shape
o description of the clamp

Draw us a picture with words.

tom
K0TAR

Xanax wrote:


Hi all,
I have a uhf yagi uda antenna mounted on the roof I have all the element
(alu welding rods) clamped to a alu- boom except the active elements.
Does this effect the preformance of the antenna in that the reflector
and directors are all connected from an electric point of view?

Cheers,
Xanax.


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