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Thread: Which goes further am or fm waves

  1. #1 Which goes further am or fm waves 
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    Well me and my friend were having a debate about the distance am and fm radio waves travel I say Fm travels further and am doesn't travel as far he said the exact opposite so can anyone reveal the answer?


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  3. #2  
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    The AM frequency band has a longer wavelength and skips off the ionosphere especially at night. Therefore it potentially has a longer range.
    http://www.cybercollege.com/frtv/frtv017.htm


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  4. #3  
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    Also, AM waves can curve along the ground by following the Earth's surface, which is slightly conductive. That's called surface wave propagation.

    FM waves just go in a straight line, and get absorbed by the atmosphere or fly off into space.
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