Tom Ring wrote:
art wrote:

When one looks at a.radiating array pattern one can see that the yagi
is very inefficient. Does anybody know of the relative volume
Art


Art

Yagis, when made of almost anything but something like nichrome wire,
are very efficient. Aluminum element yagis run in the high 90's of
percent efficiency when properly designed.

Hmmmmm I would question your logic on that figure. since I am not aware
of the normal ratio between actual resistance versus radiation
resistance which would point to
the manufacture of radiation energy relative to the total energy input
however my question relates to the efficient radiation to the
requirement at hand
Art




tom
K0TAR