| How To Listen |
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| • | Need to convert
electromagnetic (radio) waves |
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| in recordable or
audible signals. |
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| • | Sample the
E-Field or the H-Field and drive an |
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| audio amplifier
or a computer’s sound card |
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| • | Superheterodyne
receiver |
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| • | Big antennas not
needed for receive only |
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| applications |
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