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.

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.

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
to the de, or absorbing the signal and coupling it to the de via
magnetic or capactive means... 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...

JS