Receiving an AM Signal - How Radio Works | HowStuffWorks
How Radio Works. by Marshall Brain. Receiving an AM Signal. Prev NEXT . Here's a real world example. When you tune your car's AM radio to a station -- for example, 680 on the AM dial -- the transmitter's sine wave is transmitting at 680,000 hertz (the sine wave repeats 680,000 times per second). The DJ's voice is modulated onto that carrier ...
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