John Smith wrote:
art wrote:

There again maybe it is best that you be honest and say
you don't understand! Better that than join those who have
nothing to say about antennas!


Interesting, but you cannot argue with decibels, and the yagi is more
efficient that a dipole without reflector and director, at least at
capturing signal.

So the increase in reactive impedances radiation efficiency goes up?


However, while I can picture the reflector acting as a mirror (and to
some extent, this can be "proven", make the reflector a sheet and see
how much signal is radiated to the other side, away from the driven element.hat energy d it

Oh come on John, Llewellyn states the rear adds to forward radiation
and you come along with similar junk. A vector to the rear where there
is an detuned element which some how
over turns the idea of energy can't be created or destroyed ? I suppose
Roy will come up with some trash that because the reflector is reactive
it overcomes the vector that created it!



But, that darn director has always bothered me, I see it acting more as
a "magnifying glass to rf" than absorbing the signal and re-radiating it


Come on John if it is detuned from the frequency of use it can;'t be
reradiating everything
remember the hint I gave in the posting


to the de, or absorbing the signal and coupling it to the de via
magnetic or capactive means...
Oh John you have done it again if you are going to revolve
your position around coupling then losses will mount up
even more. It really isnt a puzzle unless you listen to
comments from experts who only read about Yagi's
and shut everything else out or are just looking for an
opportunity to snipe or emmulate snow code.

one more bit of a puzzle which gives me
visions of the ether (which some say is caused by evil spirits and/or
the drugs I did in college (I don't think the beer hurt anything!))

But, with his calculator in hand, I know cecil will take this head on...

I thought ether was something that did not posses its own energy
support
only a mediam for energy to pass thru, but we could change the
subject to that I suppose


JS