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you don't improve the performance of any antenna by reducing the lateral and radial dimensions of the antenna. in addition, there's an instant increase in directivity of 3 dB. when any ground plane vertical is ground mounted. see logan and rockway 1997.

24 years ago....

"a comparison involving antenna measurements and performance predictions has sometimes revealed a 6-dBdiscrepancy between the ground-wave transmission measurements and the corresponding calculations. The source of this 6-dB discrepancy is attributable to an incorrect definition of the effective area of the receiving vertical monopie antenna. This erroneous definition is that the effective area of the vertical receiving monople is twice as large as that of a corresponding receiving dipole in free space. This report shows that the effective area of a monopole is one-half that of the corresponding dipole. It is this value of effective area that resolves the 6-dB discrepancy
between measurements and analysis."

Wolf was wrong.

<blockquote data-quote="freecell" data-source="post: 766872" data-attributes="member: 30">you don&#039;t improve the performance of any antenna by reducing the lateral and radial dimensions of the antenna. in addition, there&#039;s an instant increase in directivity of 3 dB. when any ground plane vertical is ground mounted. see logan and rockway 1997.24 years ago....&quot;a comparison involving antenna measurements and performance predictions has sometimes revealed a 6-dBdiscrepancy between the ground-wave transmission measurements and the corresponding calculations. The source of this 6-dB discrepancy is attributable to an incorrect definition of the effective area of the receiving vertical monopie antenna. This erroneous definition is that the effective area of the vertical receiving monople is twice as large as that of a corresponding receiving dipole in free space. This report shows that the effective area of a monopole is one-half that of the corresponding dipole. It is this value of effective area that resolves the 6-dB discrepancybetween measurements and analysis.&quot;Wolf was wrong.</blockquote>

[QUOTE="freecell, post: 766872, member: 30"] you don't improve the performance of any antenna by reducing the lateral and radial dimensions of the antenna. in addition, there's an instant increase in directivity of 3 dB. when any ground plane vertical is ground mounted. see logan and rockway 1997. 24 years ago.... "a comparison involving antenna measurements and performance predictions has sometimes revealed a 6-dBdiscrepancy between the ground-wave transmission measurements and the corresponding calculations. The source of this 6-dB discrepancy is attributable to an incorrect definition of the effective area of the receiving vertical monopie antenna. This erroneous definition is that the effective area of the vertical receiving monople is twice as large as that of a corresponding receiving dipole in free space. This report shows that the effective area of a monopole is one-half that of the corresponding dipole. It is this value of effective area that resolves the 6-dB discrepancy between measurements and analysis." Wolf was wrong. [/QUOTE]

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