Hi, I'm confused about the meaning of the term frequency used in electronics. I'm not sure if I understand what it means. For example: There a number of frequencies travel through a single cable television, at the end point does the de-multiplexer recognizes each signal by its voltages? E.g. Signal1 at some frequency producing different voltage depending on frequency. Another example is radio waves received by radio antenna, does each EM wave produce different voltage? I would like know the relation between frequency and voltage, so i can understand what frequency means in electronics.