Roy Lewallen wrote:
A moment's thought would reveal one good reason not to reference phase
angles to "the source" -- NEC and EZNEC allow multiple sources, each
having a phase angle chosen by the user.

That's true, but the discussion so far has been about single
source systems. What is the phase reference when a single
source is used. You say it is not the same as the source
so exactly how much does it differ from the source default
of zero degrees? What does the reference default to if not
the phase of the source signal.

Is the reference phase a user selectable option? If so,
how do I select and change that reference phase without
changing the source phase?

I strongly suspect, based on my 20 years of user experience,
that the reference phase defaults to the source phase in a
single-source system. I personally have never set the
reference phase to anything except the single-source phase.
--
73, Cecil http://www.w5dxp.com