Ian White GM3SEK wrote:
However, any valid explanation of practical loading coils must predict
zero phase shift for the boundary condition where the coil displays no
other properties except pure inductance.

Translation: A model must accommodate conditions that
are impossible to achieve in reality. I'm sorry, Ian,
but that is pathological thinking not uncommon on this
newsgroup.

A software model that blows up when R=0 is perfectly
acceptable in the real world. It is a software bug,
not a statement on reality.
--
73, Cecil http://www.w5dxp.com