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When you talk about a vertical antenna and what the ground plane requirements of that antenna are, frequency is one of the most important differences between 160 meter low band DXing and 27 MHz. What you say about the dipole and it's height in terms of wavelength above ground is correct. What you are missing is that the article speaks about ground mounted low frequency vertical antennas very similar to AM broadcast stations that use that many radials to increase the radiation efficiency. With an elevated groundplane on 27 MHz the groundplane requirements are much less then around 1.8 MHz. Adding more then 4 radials will not make a noticeable difference on CB. Look into this further and you'll see the information I've provided is accurate.

[QUOTE="Shockwave, post: 204212, member: 10882"] When you talk about a vertical antenna and what the ground plane requirements of that antenna are, frequency is one of the most important differences between 160 meter low band DXing and 27 MHz. What you say about the dipole and it's height in terms of wavelength above ground is correct. What you are missing is that the article speaks about ground mounted low frequency vertical antennas very similar to AM broadcast stations that use that many radials to increase the radiation efficiency. With an elevated groundplane on 27 MHz the groundplane requirements are much less then around 1.8 MHz. Adding more then 4 radials will not make a noticeable difference on CB. Look into this further and you'll see the information I've provided is accurate. [/QUOTE]

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