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18 March, 10:07

Suppose you are designing a device to transmit information without wires what part of the EM spectrum will your device use and why

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  1. 18 March, 10:17
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    My device will use either radio waves or light waves.

    Those are the only EM waves I'm equipped to generate.

    If I want to get elegant about it, I may use radio waves with

    frequencies around 14.1 MHz, because those can be received

    many thousands of miles away. I know how to build an effective

    antenna to radiate at that frequency, and as a licensed ham-radio

    operator, I can do it legally.
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