Cecil Moore wrote:

Jim Kelley wrote:
The amplitude term is a contant. It does not vary with time.

Uh Jim, please look at this web page and tell me again
that the amplitude is constant and doesn't vary with time.

The amplitude term of an equation, and the one being plotted on an
antenna current plot, is a constant for any given position in a standing
wave. It's the peak amplitude of the time varying function. It's
really not a matter of opinion.

73, Jim AC6XG