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AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-lowcarrier frequency
Radium wrote:
... I am getting conflicting answers. Some say it's possible to modulate a carrier frequency at a frequency higher than the carrier frequency, others say it isn't. Who is right? Radium: Use simple logic, you can modulate a dc (0 Hz) with higher freq (voice), (hint, your telephone line is an example) right? However, when you get into RF--possible, usable, desirable are seperate and distinct things. Again, with simple logic, modulating a 30 CPS signal with limited voice freq (say 5K wide) is going to create a LOT of harmonics and mixed signals, ain't it? Suggesting a very wide band receiver would be needed to begin with ... in my humble opinion, and for various reasons, NO, it is NOT possible ... Regards, JS |
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