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Old July 3rd 07, 09:08 AM posted to sci.electronics.basics,rec.radio.shortwave,rec.radio.amateur.antenna,alt.cellular.cingular
dil dil is offline
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First recorded activity by RadioBanter: Jul 2007
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Default AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-lowcarrier frequency

Ron Baker, Pluralitas! wrote:
"John Smith I" wrote in message
...
Radium wrote:


snip

Suppose you have a 1 MHz sine wave whose amplitude
is multiplied by a 0.1 MHz sine wave.
What would it look like on an oscilloscope?
What would it look like on a spectrum analyzer?

Then suppose you have a 1.1 MHz sine wave added
to a 0.9 MHz sine wave.
What would that look like on an oscilloscope?
What would that look like on a spectrum analyzer?