Electrical Engineering - Re: AM radio: 20 KHz sine-wave modulator signal present on an astronomically-low frequency carrier

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Re: AM radio: 20 KHz sine-wave modulator signal present on an astronomically-low frequency carrier

Radium

2007-06-30, 8:25 pm

On Jun 30, 1:35 pm, j...@specsol.spam.sux.com wrote:

> For AM, percentage of modulation.

Huh?

Usually amplitude of any signal is determined by the power of the
signal. Power is usually measured in watts.

What SI unit is the amplitude of an AM modulator signal measured in?

BTW, I used W/M^2 is because W/M^2 is used on
http://www.glenbrook.k12.il.us/GBSS...und/u11l2b.html
which states that 1 X [10^-6] Watts-per-m^2 is about the loudness of a
"normal conversation" according to the above link.

I expected an audio-frequency modulator signal of 20 KHz on an AM
radio wave to be measured analogously.

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