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-- bmap block id: 0
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-- background id: 4601
-- name: #273
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  put 24 into group
  put "C" into rightone
  pass openCard
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Question #24

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3BI-8.4 What is the cause of power being reflected back down an antenna feed line?

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Operating an antenna at its resonant frequency

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Using more transmitter power than the antenna can handle 

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A difference between feed line impedance and antenna feed-point impedance

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Feeding the antenna with unbalanced feed line