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Question about radio signals

  1. Jun 22, 2004 #1
    can AM radio waves pass through glass been than FM radio waves?

    please explain why/how and how this can be shown in an experiment

    thx :)
  2. jcsd
  3. Jul 6, 2004 #2

    Are we to assume similar frequency range and power output is employed so as to better examine any differences between the modulation schemes themselves, rather than other characteristics such as that of differing wavelengths?
    AM is generally employed on lower frequencies while FM is used with higher ones. Lower frequencies tend to reflect more than higher frequencies (X-ray verses radio wave ‘bouncing’ off ionosphere comes to mind).

    Did not cordless phones first use lower frequencies and AM modulation prior to being replaced with superior models, both in range and clarity, using higher frequencies coupled with FM ?
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