RadioBanter - View Single Post - Current in loading coil, EZNEC

November 4th 04, 08:25 PM

On Thu, 4 Nov 2004 14:03:59 -0600, (Richard
Harrison) wrote:

All of ON4UN`s loaded antennas have maximum current at their drivepoints
and they are resonant, so their feedpoint resistance coincides with
their radiation resistance in all the instances diagrammed in the
current distribution chart for short loaded verticals.

Hi Richard,

My point is that this does not follow. The drivepoint Z is NOT the
"radiation resistance" irrespective of loading transformation. You
can build a very small radiator, load it to resonance and it offers
extremely poor efficiency. Examples abound.

73's
Richard Clark, KB7QHC