Radium wrote:

> ...
> Is it mathematically-possible to carry a modulator signal [in this
> case, a pure-sine-wave-tone] with a frequency of 20 KHz and an
> amplitude of 1-watt-per-meter-squared on a AM carrier signal whose

The 20 Khz is obviously NOT an audio tone, but exists as VLF, what you
are terming "modulation" is actually a mixing of carriers then ... and
the problem with your question ONLY BEGINS there!

JS