Arny Krueger wrote:


Suggestion. Send the signal through a 4 kHz BPF that is wide enough
to pass the sidebands but not wide enough to pass the 50 Hz or it's
harmonics.


That's an idea.

Yeah, a really good one.



You should then be able to analyze this BP signal to see
if it is AM or FM. If it is AM, the envelope will vary at 50 Hz. If
it is FM, the envelope will be constant.


Its a mixture. Now the fun begins. There is an envelope, quite clearly at 50
Hz.

Now we're getting somewhere!


However, if we limit it heavily to forcably eliminate the envelope, there
are still 4 sidebands left.

Interpretation?


Bob
--

"Things should be described as simply as possible, but no
simpler."

A. Einstein