-- card: 52554 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 7720
-- name: #171
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on openCard
  global group,rightone
  put 18 into group
  put "D" into rightone
  pass openCard
end openCard



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Question #18

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4BD-4.4 Why is an RF attenuator desirable in a receiver used for direction finding?

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It narrows the bandwidth of the received signal

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It eliminates the effects of isotropic radiation

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It reduces loss of received signals caused by antenna pattern nulls

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It prevents receiver overload from extremely strong signals

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Correct answer is D