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## Main Question or Discussion Point

Hello. I am trying to teach myself some information about radio engineering. I keep getting stuck on the concept of carrier waves. I understand their uses and what they look like, but I do not understand what causes them or why they are needed. Any clarification or analogies would help. I only have 1 year of calculus so far, so try to keep and formulas to single integrals if possible :]

Thank you very much in advance!

Thank you very much in advance!