[Vo]:Modulation, do you agree?

2007-09-13 Thread John Berry
Got a simple question, how densely can you modulate an AM signal?
(forgetting any issues of high Q reducing ability to read the fresh power
from the built up energy in the tuned tank, Digital wouldn't have that issue
I guess)

Can each half wave be of a different amplitude than the one before?

Could you have one peak be high amplitude with the next trough be low
amplitude, the next peak slightly lower than the last the next through
slightly higher than the last basically creating a separate wave. (so you
basically have offset or bias modulation not amplitude modulation or to put
it another way 2 frequencies superimposed on the same transmitter, say 2 mhz
and 10khz currents in the same antenna)

If an increase over half a wave didn't lead to an increase of reception then
it wouldn't occur at all, it can't know that while the current peak is
higher in amplitude the coming trough is going to be lower in amplitude not
higher as with amplitude modulation.

If anyone wants to give a straightforward answer I'll be interested, please
no algebra.

Thanks.


Re: [Vo]:Modulation, do you agree?

2007-09-13 Thread R.C.Macaulay

John Berry wrote..
If anyone wants to give a straightforward answer I'll be interested, please no 
algebra.

Howdy John,
There cannot be such a thing as a straightforward answer to your question 
regarding density of modulation. That would be like asking Hillary for a 
straight answer. Modulation by definition is  bent, perhaps not to the degree 
of Hillary...

 http://www.youtube.com/watch?v=3ff_AXVlo9U

Look over the Utube vid and ask your question in another way.

Richard