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- -- card: 76138 from stack: in
- -- bmap block id: 0
- -- flags: 4000
- -- background id: 4601
- -- name: #265
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- on openCard
- global group,rightone
- put 23 into group
- put "B" into rightone
- pass openCard
- end openCard
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- -- part contents for background part 20
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- Question #23
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- -- part contents for background part 1
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- 3BI-6.3 How does the proximity to the ground affect the radiation pattern of a horizontal dipole HF antenna?
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- If the antenna is too far from the ground, the pattern becomes unpredictable
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- If the antenna is less than one-half wavelength from the ground, reflected radio waves from the ground distort the radiation pattern of the antenna
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- A dipole antenna's radiation pattern is unaffected by its distance to the ground
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- -- part contents for background part 29
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- If the antenna is less than one-half wavelength from the ground, radiation off the ends of the wire is reduced