Cecil Moore wrote:

Jim Kelley wrote:

Do you consider a dipole in free space to be
a "single source"? There is no reflector yet
there is plenty of interference.


If there is no reflector and no splitter to redirect a portion of the
ratiated energy, but an interference pattern still results, then there
must be more than a single source. It should be fairly obvious that
both parts of the antenna must be present in order to generate the
dipole-type interference pattern.


Just trying to understand - are you considering the two
sections of dipole to be two separate sources?

I think I know what you want me to say, but I need you to go first.
How many sources is a monopole? :-)

jk