Dave wrote:
likewise in transmission lines, forget photons,
use currents and voltages, you will never run into a case where photons are
necessary, or even useful, in transmission line problems.

Fields and waves *are* quantized photons. Radiation
from an antenna is a lot easier to understand as
a cloud of photon particles that escape rather than
the EM fields that break away like soap bubbles.
--
73, Cecil http://www.w5dxp.com