Cecil Moore wrote:

[snip]

Steady-state DC is incapable of generating coherent photons from an
antenna.

Cecil,

Have you ever heard of a laser diode? You may well use one every day.
Billions of them are made every year for CD players and many other gadgets.

DC goes in; coherent photons come out.

This item is actually a transducer in which electromagnetic fields in a
conductor are converted to electromagnetic fields in space.

Hmmmm, sounds a lot like the function of an antenna.

73,
Gene
W4SZ