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Exam CWNA-108 topic 1 question 8 discussion

Actual exam question from CWNP's CWNA-108
Question #: 8
Topic #: 1
[All CWNA-108 Questions]

What statement about the beamwidth of an RF antenna is true?

  • A. Horizontal and vertical beamwidth are calculated at the points where the main lobe decreases power by 3 dB.
  • B. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
  • C. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
  • D. Vertical beamwidth is displayed (in degrees) on the antenna's Azimuth chart.
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Suggested Answer: A 🗳️
by Dat1992 at Aug. 31, 2023, 4 p.m.

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brendaribon
4 months, 4 weeks ago
Selected Answer: A
A. CHAPTER 4 - PAGE 151 (Official Study Guide) "Antenna beamwidth is calculated horizontally and vertically where the signal drops by 3 dB."
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Dat1992
8 months, 2 weeks ago
Selected Answer: A
A is correct. 7. Beamwidth is measured at the points where the main lobe decreases in power by 3 dB. The horizontal beamwidth is typically shown on the Azimuth chart and the vertical beamwidth is shown on the Elevation chart. When the gain of an antenna increases, the beamwidth decreases. When the beamwidth increases, the gain decreases.
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