Szczepan Bialek wrote:

" modern material on electromagnetics," is wrote by Heaviside"

Modern material on electromagnetics was written LONG after Heaviside died,
you babbling, ineducable idiot.

snip 100 year old quote

His "own course" is without the "electric particles". In Maxwell model were
such.
What "role electons play" in antennas (not in fields)?

The analysis of antennas is about the analysis of fields, you babbbling,
ineducable idiot.

If your were to read, and reread until you really understand it, any
MODERN material on electromagnetics, you would then know what role electons
play in electromagnetics and electromagnetic fields.

Yes, electrons are involved in electromagnetic fields, but no, electrons
do NOT jump off antenna elements.

Why are you incapable of getting a University level textbook, in any
language, on electromagnetics and reading it?