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?
--
73, Cecil http://www.w5dxp.com