-- card: 45107 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 2707
-- name: #164
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on openCard
  global group,rightone
  put 14 into group
  put "D" into rightone
  pass openCard
end openCard



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Question #164

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N4A04   Why should you ground all  antenna and rotator cables  when your amateur station is not in use?

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To lock the antenna system in one position.

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To avoid radio frequency interference.

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To save electricity.

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To protect the station and building from lightning damage

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Correct answer is D

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ARRL Handbook Chapter 37