On Wed, 21 Nov 2007 17:32:20 -0000, Art Greenberg
wrote:

On Tue, 20 Nov 2007 17:05:09 -0500, wrote:
Wrong. A Yagi by design is DC grounded. Boom and elements.

Improper generalization. Directors and reflectors, yes. Driven
element(s), not always. I have a tri-band amateur yagi that has a
floating driven element.

Some do float, but that would be rare. Assuming it floats the driven
element on a cell phone director is how long? It is barely a target.
If the structure around it is grounded (boom,mount ect.)then the
antenna is mostly protected in as much as you can actually protect it
from lightning.