On Fri, 20 Apr 2007 00:52:32 GMT, Owen Duffy wrote:

Roy Lewallen wrote in news:132fvs4qvp5je04
:

I believe there's at least one basic fallacy in your development.

The problem is that a directional antenna can't be made to take up zero
space. Let's consider a situation where we can have complete

Roy, the type of probe I was considering does take up space, and I
understand your point that therein lies a possible / likely explanation
for its behaviour.

I was thinking along the lines of the superposition occuring within the
directional antenna where segment currents would each be dependent on the
field from each of the sources (and to some extent field from other
segments of itself), and the antenna was where the superposition mainly
occurred. But you are correct that the antenna is of non zero size, and
the segments that I refer to are not all located at a point where the
field strength from each source is equal and opposite.

Hi Owen,

Why would you think that superposition fails for this?

73's
Richard Clark, KB7QHC